[DSIP-35][Alert] Refactor the alert thread model (#15932)

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-aliyunVoice/src/main/java/org/apache/dolphinscheduler/plugin/alert/voice/VoiceAlertChannel.java

@@ -40,7 +40,7 @@ public final class VoiceAlertChannel implements AlertChannel {
 
         Map<String, String> paramsMap = info.getAlertParams();
         if (null == paramsMap) {
-            return new AlertResult("false", "aliyun-voice params is null");
+            return new AlertResult(false, "aliyun-voice params is null");
         }
         VoiceParam voiceParam = buildVoiceParam(paramsMap);
         return new VoiceSender(voiceParam).send();

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-aliyunVoice/src/main/java/org/apache/dolphinscheduler/plugin/alert/voice/VoiceSender.java

@@ -46,7 +46,7 @@ public final class VoiceSender {
 
     public AlertResult send() {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
         try {
             Client client = createClient(voiceParam.getConnection());
             SingleCallByTtsRequest singleCallByTtsRequest = new SingleCallByTtsRequest()
@@ -61,7 +61,7 @@ public final class VoiceSender {
             }
             SingleCallByTtsResponseBody body = response.getBody();
             if (body.code.equalsIgnoreCase("ok")) {
-                alertResult.setStatus("true");
+                alertResult.setSuccess(true);
                 alertResult.setMessage(body.getCallId());
             } else {
                 alertResult.setMessage(body.getMessage());

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-aliyunVoice/src/test/java/VoiceSenderTest.java

@@ -46,7 +46,7 @@ class VoiceSenderTest {
         VoiceSender weChatSender = new VoiceSender(voiceParam);
 
         AlertResult alertResult = weChatSender.send();
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-api/src/main/java/org/apache/dolphinscheduler/alert/api/AlertChannel.java

@@ -35,6 +35,6 @@ public interface AlertChannel {
     AlertResult process(AlertInfo info);
 
     default @NonNull AlertResult closeAlert(AlertInfo info) {
-        return new AlertResult("true", "no need to close alert");
+        return new AlertResult(true, "no need to close alert");
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-api/src/main/java/org/apache/dolphinscheduler/alert/api/AlertData.java

@@ -53,14 +53,6 @@ public class AlertData {
      */
     private String log;
 
-    /**
-     * 0 do not send warning;
-     * 1 send if process success;
-     * 2 send if process failed;
-     * 3 send if process ends, whatever the result;
-     */
-    private int warnType;
-
     /**
      * AlertType#code
      */

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-api/src/main/java/org/apache/dolphinscheduler/alert/api/AlertResult.java

@@ -33,15 +33,19 @@ import lombok.NoArgsConstructor;
 @NoArgsConstructor
 public class AlertResult {
 
-    /**
+    private boolean success;
-     * todo: use enum
-     * false or true
-     */
-    private String status;
 
     /**
      * alert result message, each plugin can have its own message
      */
     private String message;
 
+    public static AlertResult success() {
+        return new AlertResult(true, null);
+    }
+
+    public static AlertResult fail(String message) {
+        return new AlertResult(false, message);
+    }
+
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-dingtalk/src/main/java/org/apache/dolphinscheduler/plugin/alert/dingtalk/DingTalkAlertChannel.java

@@ -31,7 +31,7 @@ public final class DingTalkAlertChannel implements AlertChannel {
         AlertData alertData = alertInfo.getAlertData();
         Map<String, String> paramsMap = alertInfo.getAlertParams();
         if (null == paramsMap) {
-            return new AlertResult("false", "ding talk params is null");
+            return new AlertResult(false, "ding talk params is null");
         }
         return new DingTalkSender(paramsMap).sendDingTalkMsg(alertData.getTitle(), alertData.getContent());
     }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-dingtalk/src/main/java/org/apache/dolphinscheduler/plugin/alert/dingtalk/DingTalkSender.java

@@ -126,7 +126,7 @@ public final class DingTalkSender {
 
     private AlertResult checkSendDingTalkSendMsgResult(String result) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
 
         if (null == result) {
             alertResult.setMessage("send ding talk msg error");
@@ -140,7 +140,7 @@ public final class DingTalkSender {
             return alertResult;
         }
         if (sendMsgResponse.errcode == 0) {
-            alertResult.setStatus("true");
+            alertResult.setSuccess(true);
             alertResult.setMessage("send ding talk msg success");
             return alertResult;
         }
@@ -164,7 +164,7 @@ public final class DingTalkSender {
         } catch (Exception e) {
             log.info("send ding talk alert msg  exception : {}", e.getMessage());
             alertResult = new AlertResult();
-            alertResult.setStatus("false");
+            alertResult.setSuccess(false);
             alertResult.setMessage("send ding talk alert fail.");
         }
         return alertResult;

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-dingtalk/src/test/java/org/apache/dolphinscheduler/plugin/alert/dingtalk/DingTalkSenderTest.java

@@ -52,7 +52,7 @@ public class DingTalkSenderTest {
         dingTalkConfig.put(DingTalkParamsConstants.NAME_DING_TALK_PROXY_ENABLE, "true");
         dingTalkSender = new DingTalkSender(dingTalkConfig);
         AlertResult alertResult = dingTalkSender.sendDingTalkMsg("title", "content test");
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertEquals(false, alertResult.isSuccess());
     }
 
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-email/src/main/java/org/apache/dolphinscheduler/plugin/alert/email/EmailAlertChannel.java

@@ -35,24 +35,20 @@ public final class EmailAlertChannel implements AlertChannel {
         AlertData alert = info.getAlertData();
         Map<String, String> paramsMap = info.getAlertParams();
         if (null == paramsMap) {
-            return new AlertResult("false", "mail params is null");
+            return new AlertResult(false, "mail params is null");
         }
         MailSender mailSender = new MailSender(paramsMap);
         AlertResult alertResult = mailSender.sendMails(alert.getTitle(), alert.getContent());
 
-        boolean flag;
-
         if (alertResult == null) {
             alertResult = new AlertResult();
-            alertResult.setStatus("false");
+            alertResult.setSuccess(false);
             alertResult.setMessage("alert send error.");
             log.info("alert send error : {}", alertResult.getMessage());
             return alertResult;
         }
 
-        flag = Boolean.parseBoolean(String.valueOf(alertResult.getStatus()));
+        if (alertResult.isSuccess()) {
-
-        if (flag) {
             log.info("alert send success");
             alertResult.setMessage("email send success.");
         } else {

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-email/src/main/java/org/apache/dolphinscheduler/plugin/alert/email/MailSender.java

@@ -154,7 +154,7 @@ public final class MailSender {
      */
     public AlertResult sendMails(List<String> receivers, List<String> receiverCcs, String title, String content) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
 
         // if there is no receivers && no receiversCc, no need to process
         if (CollectionUtils.isEmpty(receivers) && CollectionUtils.isEmpty(receiverCcs)) {
@@ -201,7 +201,7 @@ public final class MailSender {
 
                 attachment(title, content, partContent);
 
-                alertResult.setStatus("true");
+                alertResult.setSuccess(true);
                 return alertResult;
             } catch (Exception e) {
                 handleException(alertResult, e);
@@ -380,7 +380,7 @@ public final class MailSender {
         email.setDebug(true);
         email.send();
 
-        alertResult.setStatus("true");
+        alertResult.setSuccess(true);
 
         return alertResult;
     }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-email/src/test/java/org/apache/dolphinscheduler/plugin/alert/email/EmailAlertChannelTest.java

@@ -66,7 +66,7 @@ public class EmailAlertChannelTest {
         alertInfo.setAlertParams(paramsMap);
         AlertResult alertResult = emailAlertChannel.process(alertInfo);
         Assertions.assertNotNull(alertResult);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     public String getEmailAlertParams() {

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-email/src/test/java/org/apache/dolphinscheduler/plugin/alert/email/MailUtilsTest.java

@@ -77,7 +77,7 @@ public class MailUtilsTest {
         AlertResult alertResult = mailSender.sendMails(
                 "Mysql Exception",
                 content);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
@@ -107,7 +107,7 @@ public class MailUtilsTest {
         emailConfig.put(MailParamsConstants.NAME_MAIL_PASSWD, "passwd");
         mailSender = new MailSender(emailConfig);
         AlertResult alertResult = mailSender.sendMails(title, content);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     public String list2String() {
@@ -142,24 +142,24 @@ public class MailUtilsTest {
         emailConfig.put(AlertConstants.NAME_SHOW_TYPE, ShowType.TABLE.getDescp());
         mailSender = new MailSender(emailConfig);
         AlertResult alertResult = mailSender.sendMails(title, content);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
-    public void testAttachmentFile() throws Exception {
+    public void testAttachmentFile() {
         String content = list2String();
         emailConfig.put(AlertConstants.NAME_SHOW_TYPE, ShowType.ATTACHMENT.getDescp());
         mailSender = new MailSender(emailConfig);
         AlertResult alertResult = mailSender.sendMails("gaojing", content);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
-    public void testTableAttachmentFile() throws Exception {
+    public void testTableAttachmentFile() {
         String content = list2String();
         emailConfig.put(AlertConstants.NAME_SHOW_TYPE, ShowType.TABLE_ATTACHMENT.getDescp());
         mailSender = new MailSender(emailConfig);
         AlertResult alertResult = mailSender.sendMails("gaojing", content);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-feishu/src/main/java/org/apache/dolphinscheduler/plugin/alert/feishu/FeiShuAlertChannel.java

@@ -31,7 +31,7 @@ public final class FeiShuAlertChannel implements AlertChannel {
         AlertData alertData = alertInfo.getAlertData();
         Map<String, String> paramsMap = alertInfo.getAlertParams();
         if (null == paramsMap) {
-            return new AlertResult("false", "fei shu params is null");
+            return new AlertResult(false, "fei shu params is null");
         }
         return new FeiShuSender(paramsMap).sendFeiShuMsg(alertData);
     }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-feishu/src/main/java/org/apache/dolphinscheduler/plugin/alert/feishu/FeiShuSender.java

@@ -80,7 +80,7 @@ public final class FeiShuSender {
 
     public static AlertResult checkSendFeiShuSendMsgResult(String result) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
 
         if (org.apache.commons.lang3.StringUtils.isBlank(result)) {
             alertResult.setMessage("send fei shu msg error");
@@ -95,7 +95,7 @@ public final class FeiShuSender {
             return alertResult;
         }
         if (sendMsgResponse.statusCode == 0) {
-            alertResult.setStatus("true");
+            alertResult.setSuccess(true);
             alertResult.setMessage("send fei shu msg success");
             return alertResult;
         }
@@ -136,7 +136,7 @@ public final class FeiShuSender {
         } catch (Exception e) {
             log.info("send fei shu alert msg  exception : {}", e.getMessage());
             alertResult = new AlertResult();
-            alertResult.setStatus("false");
+            alertResult.setSuccess(false);
             alertResult.setMessage("send fei shu alert fail.");
         }
         return alertResult;

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-feishu/src/test/java/org/apache/dolphinscheduler/plugin/alert/feishu/FeiShuSenderTest.java

@@ -43,7 +43,7 @@ public class FeiShuSenderTest {
         alertData.setContent("feishu test content");
         FeiShuSender feiShuSender = new FeiShuSender(feiShuConfig);
         AlertResult alertResult = feiShuSender.sendFeiShuMsg(alertData);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
@@ -87,12 +87,12 @@ public class FeiShuSenderTest {
 
         FeiShuSender feiShuSender = new FeiShuSender(feiShuConfig);
         AlertResult alertResult = feiShuSender.checkSendFeiShuSendMsgResult("");
-        Assertions.assertFalse(Boolean.valueOf(alertResult.getStatus()));
+        Assertions.assertFalse(alertResult.isSuccess());
         AlertResult alertResult2 = feiShuSender.checkSendFeiShuSendMsgResult("123");
         Assertions.assertEquals("send fei shu msg fail", alertResult2.getMessage());
 
         String response = "{\"StatusCode\":\"0\",\"extra\":\"extra\",\"StatusMessage\":\"StatusMessage\"}";
         AlertResult alertResult3 = feiShuSender.checkSendFeiShuSendMsgResult(response);
-        Assertions.assertTrue(Boolean.valueOf(alertResult3.getStatus()));
+        Assertions.assertTrue(alertResult3.isSuccess());
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-http/src/main/java/org/apache/dolphinscheduler/plugin/alert/http/HttpAlertChannel.java

@@ -31,7 +31,7 @@ public final class HttpAlertChannel implements AlertChannel {
         AlertData alertData = alertInfo.getAlertData();
         Map<String, String> paramsMap = alertInfo.getAlertParams();
         if (null == paramsMap) {
-            return new AlertResult("false", "http params is null");
+            return new AlertResult(false, "http params is null");
         }
 
         return new HttpSender(paramsMap).send(alertData.getContent());

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-http/src/main/java/org/apache/dolphinscheduler/plugin/alert/http/HttpSender.java

@@ -92,18 +92,18 @@ public final class HttpSender {
         }
 
         if (httpRequest == null) {
-            alertResult.setStatus("false");
+            alertResult.setSuccess(false);
             alertResult.setMessage("Request types are not supported");
             return alertResult;
         }
 
         try {
             String resp = this.getResponseString(httpRequest);
-            alertResult.setStatus("true");
+            alertResult.setSuccess(true);
             alertResult.setMessage(resp);
         } catch (Exception e) {
             log.error("send http alert msg  exception : {}", e.getMessage());
-            alertResult.setStatus("false");
+            alertResult.setSuccess(false);
             alertResult.setMessage(
                     String.format("Send http request alert failed: %s", e.getMessage()));
         }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-http/src/test/java/org/apache/dolphinscheduler/plugin/alert/http/HttpAlertChannelTest.java

@@ -62,9 +62,9 @@ public class HttpAlertChannelTest {
 
         // HttpSender(paramsMap).send(alertData.getContent()); already test in HttpSenderTest.sendTest. so we can mock
         // it
-        doReturn(new AlertResult("true", "success")).when(alertChannel).process(any());
+        doReturn(new AlertResult(true, "success")).when(alertChannel).process(any());
         AlertResult alertResult = alertChannel.process(alertInfo);
-        Assertions.assertEquals("true", alertResult.getStatus());
+        Assertions.assertTrue(alertResult.isSuccess());
     }
 
     /**

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-http/src/test/java/org/apache/dolphinscheduler/plugin/alert/http/HttpSenderTest.java

@@ -46,7 +46,7 @@ public class HttpSenderTest {
         HttpSender httpSender = spy(new HttpSender(paramsMap));
         doReturn("success").when(httpSender).getResponseString(any());
         AlertResult alertResult = httpSender.send("Fault tolerance warning");
-        Assertions.assertEquals("true", alertResult.getStatus());
+        Assertions.assertTrue(alertResult.isSuccess());
         Assertions.assertTrue(httpSender.getRequestUrl().contains(url));
         Assertions.assertTrue(httpSender.getRequestUrl().contains(contentField));
     }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-pagerduty/src/main/java/org/apache/dolphinscheduler/plugin/alert/pagerduty/PagerDutyAlertChannel.java

@@ -30,8 +30,8 @@ public final class PagerDutyAlertChannel implements AlertChannel {
     public AlertResult process(AlertInfo alertInfo) {
         AlertData alertData = alertInfo.getAlertData();
         Map<String, String> alertParams = alertInfo.getAlertParams();
-        if (alertParams == null || alertParams.size() == 0) {
+        if (alertParams == null || alertParams.isEmpty()) {
-            return new AlertResult("false", "PagerDuty alert params is empty");
+            return new AlertResult(false, "PagerDuty alert params is empty");
         }
 
         return new PagerDutySender(alertParams).sendPagerDutyAlter(alertData.getTitle(), alertData.getContent());

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-pagerduty/src/main/java/org/apache/dolphinscheduler/plugin/alert/pagerduty/PagerDutySender.java

@@ -53,7 +53,7 @@ public final class PagerDutySender {
 
     public AlertResult sendPagerDutyAlter(String title, String content) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
         alertResult.setMessage("send pager duty alert fail.");
 
         try {
@@ -83,7 +83,7 @@ public final class PagerDutySender {
             String responseContent = EntityUtils.toString(entity, StandardCharsets.UTF_8);
             try {
                 if (statusCode == HttpStatus.SC_OK || statusCode == HttpStatus.SC_ACCEPTED) {
-                    alertResult.setStatus("true");
+                    alertResult.setSuccess(true);
                     alertResult.setMessage("send pager duty alert success");
                 } else {
                     alertResult.setMessage(

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-pagerduty/src/test/java/org/apache/dolphinscheduler/plugin/alert/pagerduty/PagerDutySenderTest.java

@@ -39,6 +39,6 @@ public class PagerDutySenderTest {
     public void testSend() {
         PagerDutySender pagerDutySender = new PagerDutySender(pagerDutyConfig);
         AlertResult alertResult = pagerDutySender.sendPagerDutyAlter("pagerduty test title", "pagerduty test content");
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-prometheus/src/main/java/org/apache/dolphinscheduler/plugin/alert/prometheus/PrometheusAlertChannel.java

@@ -31,7 +31,7 @@ public final class PrometheusAlertChannel implements AlertChannel {
         AlertData alertData = info.getAlertData();
         Map<String, String> paramsMap = info.getAlertParams();
         if (null == paramsMap) {
-            return new AlertResult("false", "prometheus alert manager params is null");
+            return new AlertResult(false, "prometheus alert manager params is null");
         }
         return new PrometheusAlertSender(paramsMap).sendMessage(alertData);
 

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-prometheus/src/main/java/org/apache/dolphinscheduler/plugin/alert/prometheus/PrometheusAlertSender.java

@@ -23,6 +23,7 @@ import org.apache.dolphinscheduler.alert.api.HttpServiceRetryStrategy;
 import org.apache.dolphinscheduler.common.utils.JSONUtils;
 
 import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.exception.ExceptionUtils;
 import org.apache.http.HttpEntity;
 import org.apache.http.HttpStatus;
 import org.apache.http.client.methods.CloseableHttpResponse;
@@ -64,11 +65,10 @@ public class PrometheusAlertSender {
             String resp = sendMsg(alertData);
             return checkSendAlertManageMsgResult(resp);
         } catch (Exception e) {
-            String errorMsg = String.format("send prometheus alert manager alert error, exception: %s", e.getMessage());
+            log.error("Send prometheus alert manager alert error", e);
-            log.error(errorMsg);
             alertResult = new AlertResult();
-            alertResult.setStatus("false");
+            alertResult.setSuccess(false);
-            alertResult.setMessage(errorMsg);
+            alertResult.setMessage(ExceptionUtils.getMessage(e));
         }
         return alertResult;
     }
@@ -106,10 +106,10 @@ public class PrometheusAlertSender {
 
     public AlertResult checkSendAlertManageMsgResult(String resp) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
 
         if (Objects.equals(resp, PrometheusAlertConstants.ALERT_SUCCESS)) {
-            alertResult.setStatus("true");
+            alertResult.setSuccess(true);
             alertResult.setMessage("prometheus alert manager send success");
             return alertResult;
         }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-prometheus/src/test/java/org/apache/dolphinscheduler/plugin/alert/prometheus/PrometheusAlertSenderTest.java

@@ -55,17 +55,17 @@ public class PrometheusAlertSenderTest {
                 "    }]");
         PrometheusAlertSender sender = new PrometheusAlertSender(config);
         AlertResult result = sender.sendMessage(alertData);
-        Assertions.assertEquals("false", result.getStatus());
+        Assertions.assertFalse(result.isSuccess());
     }
 
     @Test
     public void testCheckSendAlertManageMsgResult() {
         PrometheusAlertSender prometheusAlertSender = new PrometheusAlertSender(config);
         AlertResult alertResult1 = prometheusAlertSender.checkSendAlertManageMsgResult("");
-        Assertions.assertFalse(Boolean.parseBoolean(alertResult1.getStatus()));
+        Assertions.assertFalse(alertResult1.isSuccess());
         Assertions.assertEquals("prometheus alert manager send fail, resp is ", alertResult1.getMessage());
         AlertResult alertResult2 = prometheusAlertSender.checkSendAlertManageMsgResult("alert success");
-        Assertions.assertTrue(Boolean.parseBoolean(alertResult2.getStatus()));
+        Assertions.assertTrue(alertResult2.isSuccess());
         Assertions.assertEquals("prometheus alert manager send success", alertResult2.getMessage());
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-script/src/main/java/org/apache/dolphinscheduler/plugin/alert/script/ScriptAlertChannel.java

@@ -33,7 +33,7 @@ public final class ScriptAlertChannel implements AlertChannel {
         AlertData alertData = alertinfo.getAlertData();
         Map<String, String> paramsMap = alertinfo.getAlertParams();
         if (MapUtils.isEmpty(paramsMap)) {
-            return new AlertResult("false", "script params is empty");
+            return new AlertResult(false, "script params is empty");
         }
         return new ScriptSender(paramsMap).sendScriptAlert(alertData.getTitle(), alertData.getContent());
     }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-script/src/main/java/org/apache/dolphinscheduler/plugin/alert/script/ScriptSender.java

@@ -56,7 +56,7 @@ public final class ScriptSender {
         }
         // If it is another type of alarm script can be added here, such as python
 
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
         log.error("script type error: {}", scriptType);
         alertResult.setMessage("script type error : " + scriptType);
         return alertResult;
@@ -64,7 +64,7 @@ public final class ScriptSender {
 
     private AlertResult executeShellScript(String title, String content) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
         if (Boolean.TRUE.equals(OSUtils.isWindows())) {
             alertResult.setMessage("shell script not support windows os");
             return alertResult;
@@ -111,7 +111,7 @@ public final class ScriptSender {
         int exitCode = ProcessUtils.executeScript(cmd);
 
         if (exitCode == 0) {
-            alertResult.setStatus("true");
+            alertResult.setSuccess(true);
             alertResult.setMessage("send script alert msg success");
             return alertResult;
         }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-script/src/test/java/org/apache/dolphinscheduler/plugin/alert/script/ScriptSenderTest.java

@@ -17,6 +17,8 @@
 
 package org.apache.dolphinscheduler.plugin.alert.script;
 
+import static org.junit.jupiter.api.Assertions.assertFalse;
+
 import org.apache.dolphinscheduler.alert.api.AlertResult;
 
 import java.util.HashMap;
@@ -48,9 +50,9 @@ public class ScriptSenderTest {
         ScriptSender scriptSender = new ScriptSender(scriptConfig);
         AlertResult alertResult;
         alertResult = scriptSender.sendScriptAlert("test title Kris", "test content");
-        Assertions.assertEquals("true", alertResult.getStatus());
+        Assertions.assertTrue(alertResult.isSuccess());
         alertResult = scriptSender.sendScriptAlert("error msg title", "test content");
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
@@ -58,7 +60,7 @@ public class ScriptSenderTest {
         scriptConfig.put(ScriptParamsConstants.NAME_SCRIPT_USER_PARAMS, "' ; calc.exe ; '");
         ScriptSender scriptSender = new ScriptSender(scriptConfig);
         AlertResult alertResult = scriptSender.sendScriptAlert("test title Kris", "test content");
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
@@ -67,7 +69,7 @@ public class ScriptSenderTest {
         ScriptSender scriptSender = new ScriptSender(scriptConfig);
         AlertResult alertResult;
         alertResult = scriptSender.sendScriptAlert("test user params NPE", "test content");
-        Assertions.assertEquals("true", alertResult.getStatus());
+        Assertions.assertTrue(alertResult.isSuccess());
     }
 
     @Test
@@ -76,7 +78,7 @@ public class ScriptSenderTest {
         ScriptSender scriptSender = new ScriptSender(scriptConfig);
         AlertResult alertResult;
         alertResult = scriptSender.sendScriptAlert("test path NPE", "test content");
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
@@ -85,7 +87,7 @@ public class ScriptSenderTest {
         ScriptSender scriptSender = new ScriptSender(scriptConfig);
         AlertResult alertResult;
         alertResult = scriptSender.sendScriptAlert("test path NPE", "test content");
-        Assertions.assertEquals("false", alertResult.getStatus());
+        assertFalse(alertResult.isSuccess());
         Assertions.assertTrue(alertResult.getMessage().contains("shell script is invalid, only support .sh file"));
     }
 
@@ -95,7 +97,7 @@ public class ScriptSenderTest {
         ScriptSender scriptSender = new ScriptSender(scriptConfig);
         AlertResult alertResult;
         alertResult = scriptSender.sendScriptAlert("test type is error", "test content");
-        Assertions.assertEquals("false", alertResult.getStatus());
+        assertFalse(alertResult.isSuccess());
     }
 
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-slack/src/main/java/org/apache/dolphinscheduler/plugin/alert/slack/SlackAlertChannel.java

@@ -30,11 +30,11 @@ public final class SlackAlertChannel implements AlertChannel {
     public AlertResult process(AlertInfo alertInfo) {
         AlertData alertData = alertInfo.getAlertData();
         Map<String, String> alertParams = alertInfo.getAlertParams();
-        if (alertParams == null || alertParams.size() == 0) {
+        if (alertParams == null || alertParams.isEmpty()) {
-            return new AlertResult("false", "Slack alert params is empty");
+            return new AlertResult(false, "Slack alert params is empty");
         }
         SlackSender slackSender = new SlackSender(alertParams);
         String response = slackSender.sendMessage(alertData.getTitle(), alertData.getContent());
-        return new AlertResult("ok".equals(response) ? "true" : "false", response);
+        return new AlertResult("ok".equals(response), response);
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-telegram/src/main/java/org/apache/dolphinscheduler/plugin/alert/telegram/TelegramAlertChannel.java

@@ -30,7 +30,7 @@ public final class TelegramAlertChannel implements AlertChannel {
     public AlertResult process(AlertInfo info) {
         Map<String, String> alertParams = info.getAlertParams();
         if (alertParams == null || alertParams.isEmpty()) {
-            return new AlertResult("false", "Telegram alert params is empty");
+            return AlertResult.fail("Telegram alert params is empty");
         }
         AlertData data = info.getAlertData();
         return new TelegramSender(alertParams).sendMessage(data);

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-telegram/src/main/java/org/apache/dolphinscheduler/plugin/alert/telegram/TelegramSender.java

@@ -105,7 +105,7 @@ public final class TelegramSender {
         } catch (Exception e) {
             log.warn("send telegram alert msg exception : {}", e.getMessage());
             result = new AlertResult();
-            result.setStatus("false");
+            result.setSuccess(false);
             result.setMessage(String.format("send telegram alert fail. %s", e.getMessage()));
         }
         return result;
@@ -113,7 +113,7 @@ public final class TelegramSender {
 
     private AlertResult parseRespToResult(String resp) {
         AlertResult result = new AlertResult();
-        result.setStatus("false");
+        result.setSuccess(false);
         if (null == resp || resp.isEmpty()) {
             result.setMessage("send telegram msg error. telegram server resp is empty");
             return result;
@@ -127,7 +127,7 @@ public final class TelegramSender {
             result.setMessage(String.format("send telegram alert fail. telegram server error_code: %d, description: %s",
                     response.errorCode, response.description));
         } else {
-            result.setStatus("true");
+            result.setSuccess(true);
             result.setMessage("send telegram msg success.");
         }
         return result;

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-telegram/src/test/java/org/apache/dolphinscheduler/plugin/alert/telegram/TelegramSenderTest.java

@@ -52,7 +52,7 @@ public class TelegramSenderTest {
                 TelegramParamsConstants.NAME_TELEGRAM_BOT_TOKEN, "XXXXXXX");
         TelegramSender telegramSender = new TelegramSender(telegramConfig);
         AlertResult result = telegramSender.sendMessage(alertData);
-        Assertions.assertEquals("false", result.getStatus());
+        Assertions.assertFalse(result.isSuccess());
 
     }
 
@@ -65,7 +65,7 @@ public class TelegramSenderTest {
                 TelegramParamsConstants.NAME_TELEGRAM_CHAT_ID, "-XXXXXXX");
         TelegramSender telegramSender = new TelegramSender(telegramConfig);
         AlertResult result = telegramSender.sendMessage(alertData);
-        Assertions.assertEquals("false", result.getStatus());
+        Assertions.assertFalse(result.isSuccess());
     }
 
     @Test
@@ -75,7 +75,7 @@ public class TelegramSenderTest {
         alertData.setContent("telegram test content");
         TelegramSender telegramSender = new TelegramSender(telegramConfig);
         AlertResult result = telegramSender.sendMessage(alertData);
-        Assertions.assertEquals("false", result.getStatus());
+        Assertions.assertFalse(result.isSuccess());
 
     }
 
@@ -89,7 +89,7 @@ public class TelegramSenderTest {
                 TelegramParamsConstants.NAME_TELEGRAM_PARSE_MODE, TelegramAlertConstants.PARSE_MODE_MARKDOWN);
         TelegramSender telegramSender = new TelegramSender(telegramConfig);
         AlertResult result = telegramSender.sendMessage(alertData);
-        Assertions.assertEquals("false", result.getStatus());
+        Assertions.assertFalse(result.isSuccess());
 
     }
 
@@ -102,7 +102,7 @@ public class TelegramSenderTest {
                 TelegramParamsConstants.NAME_TELEGRAM_PARSE_MODE, TelegramAlertConstants.PARSE_MODE_HTML);
         TelegramSender telegramSender = new TelegramSender(telegramConfig);
         AlertResult result = telegramSender.sendMessage(alertData);
-        Assertions.assertEquals("false", result.getStatus());
+        Assertions.assertFalse(result.isSuccess());
 
     }
 

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-webexteams/src/main/java/org/apache/dolphinscheduler/plugin/alert/webexteams/WebexTeamsAlertChannel.java

@@ -33,7 +33,7 @@ public final class WebexTeamsAlertChannel implements AlertChannel {
         AlertData alertData = alertInfo.getAlertData();
         Map<String, String> alertParams = alertInfo.getAlertParams();
         if (MapUtils.isEmpty(alertParams)) {
-            return new AlertResult("false", "WebexTeams alert params is empty");
+            return new AlertResult(false, "WebexTeams alert params is empty");
         }
 
         return new WebexTeamsSender(alertParams).sendWebexTeamsAlter(alertData);

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-webexteams/src/main/java/org/apache/dolphinscheduler/plugin/alert/webexteams/WebexTeamsSender.java

@@ -67,7 +67,7 @@ public final class WebexTeamsSender {
 
     public AlertResult sendWebexTeamsAlter(AlertData alertData) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus("false");
+        alertResult.setSuccess(false);
         alertResult.setMessage("send webex teams alert fail.");
 
         try {
@@ -93,7 +93,7 @@ public final class WebexTeamsSender {
             String responseContent = EntityUtils.toString(entity, StandardCharsets.UTF_8);
             try {
                 if (statusCode == HttpStatus.SC_OK) {
-                    alertResult.setStatus("true");
+                    alertResult.setSuccess(true);
                     alertResult.setMessage("send webex teams alert success");
                 } else {
                     alertResult.setMessage(String.format(

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-webexteams/src/test/java/org/apache/dolphinscheduler/plugin/alert/webexteams/WebexTeamsSenderTest.java

@@ -85,6 +85,6 @@ public class WebexTeamsSenderTest {
     public void testSend() {
         WebexTeamsSender webexTeamsSender = new WebexTeamsSender(webexTeamsConfig);
         AlertResult alertResult = webexTeamsSender.sendWebexTeamsAlter(alertData);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-wechat/src/main/java/org/apache/dolphinscheduler/plugin/alert/wechat/WeChatAlertChannel.java

@@ -31,7 +31,7 @@ public final class WeChatAlertChannel implements AlertChannel {
         AlertData alertData = info.getAlertData();
         Map<String, String> paramsMap = info.getAlertParams();
         if (null == paramsMap) {
-            return new AlertResult("false", "we chat params is null");
+            return new AlertResult(false, "we chat params is null");
         }
         return new WeChatSender(paramsMap).sendEnterpriseWeChat(alertData.getTitle(), alertData.getContent());
 

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-wechat/src/main/java/org/apache/dolphinscheduler/plugin/alert/wechat/WeChatSender.java

@@ -54,7 +54,6 @@ import lombok.extern.slf4j.Slf4j;
 public final class WeChatSender {
 
     private static final String MUST_NOT_NULL = " must not null";
-    private static final String ALERT_STATUS = "false";
     private static final String AGENT_ID_REG_EXP = "{agentId}";
     private static final String MSG_REG_EXP = "{msg}";
     private static final String USER_REG_EXP = "{toUser}";
@@ -178,7 +177,7 @@ public final class WeChatSender {
 
     private static AlertResult checkWeChatSendMsgResult(String result) {
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus(ALERT_STATUS);
+        alertResult.setSuccess(false);
 
         if (null == result) {
             alertResult.setMessage("we chat send fail");
@@ -192,11 +191,11 @@ public final class WeChatSender {
             return alertResult;
         }
         if (sendMsgResponse.errcode == 0) {
-            alertResult.setStatus("true");
+            alertResult.setSuccess(true);
             alertResult.setMessage("we chat alert send success");
             return alertResult;
         }
-        alertResult.setStatus(ALERT_STATUS);
+        alertResult.setSuccess(false);
         alertResult.setMessage(sendMsgResponse.getErrmsg());
         return alertResult;
     }
@@ -212,7 +211,7 @@ public final class WeChatSender {
         if (null == weChatToken) {
             alertResult = new AlertResult();
             alertResult.setMessage("send we chat alert fail,get weChat token error");
-            alertResult.setStatus(ALERT_STATUS);
+            alertResult.setSuccess(false);
             return alertResult;
         }
         String enterpriseWeChatPushUrlReplace = "";
@@ -239,7 +238,7 @@ public final class WeChatSender {
             log.info("send we chat alert msg  exception : {}", e.getMessage());
             alertResult = new AlertResult();
             alertResult.setMessage("send we chat alert fail");
-            alertResult.setStatus(ALERT_STATUS);
+            alertResult.setSuccess(false);
         }
         return alertResult;
     }

dolphinscheduler-alert/dolphinscheduler-alert-plugins/dolphinscheduler-alert-wechat/src/test/java/org/apache/dolphinscheduler/plugin/alert/wechat/WeChatSenderTest.java

@@ -71,7 +71,7 @@ public class WeChatSenderTest {
         WeChatSender weChatSender = new WeChatSender(weChatConfig);
 
         AlertResult alertResult = weChatSender.sendEnterpriseWeChat("test", content);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
     @Test
@@ -79,7 +79,7 @@ public class WeChatSenderTest {
         weChatConfig.put(AlertConstants.NAME_SHOW_TYPE, ShowType.TEXT.getDescp());
         WeChatSender weChatSender = new WeChatSender(weChatConfig);
         AlertResult alertResult = weChatSender.sendEnterpriseWeChat("test", content);
-        Assertions.assertEquals("false", alertResult.getStatus());
+        Assertions.assertFalse(alertResult.isSuccess());
     }
 
 }

dolphinscheduler-alert/dolphinscheduler-alert-server/pom.xml

@@ -66,6 +66,12 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-kubernetes-client-config</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/AlertServer.java

@@ -18,11 +18,7 @@
 package org.apache.dolphinscheduler.alert;
 
 import org.apache.dolphinscheduler.alert.metrics.AlertServerMetrics;
-import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
-import org.apache.dolphinscheduler.alert.registry.AlertRegistryClient;
-import org.apache.dolphinscheduler.alert.rpc.AlertRpcServer;
 import org.apache.dolphinscheduler.alert.service.AlertBootstrapService;
-import org.apache.dolphinscheduler.alert.service.ListenerEventPostService;
 import org.apache.dolphinscheduler.common.CommonConfiguration;
 import org.apache.dolphinscheduler.common.constants.Constants;
 import org.apache.dolphinscheduler.common.lifecycle.ServerLifeCycleManager;
@@ -50,14 +46,6 @@ public class AlertServer {
 
     @Autowired
     private AlertBootstrapService alertBootstrapService;
-    @Autowired
-    private ListenerEventPostService listenerEventPostService;
-    @Autowired
-    private AlertRpcServer alertRpcServer;
-    @Autowired
-    private AlertPluginManager alertPluginManager;
-    @Autowired
-    private AlertRegistryClient alertRegistryClient;
 
     public static void main(String[] args) {
         AlertServerMetrics.registerUncachedException(DefaultUncaughtExceptionHandler::getUncaughtExceptionCount);
@@ -68,27 +56,14 @@ public class AlertServer {
 
     @PostConstruct
     public void run() {
-        log.info("Alert server is staring ...");
+        log.info("AlertServer is staring ...");
-        alertPluginManager.start();
-        alertRegistryClient.start();
         alertBootstrapService.start();
-        listenerEventPostService.start();
+        log.info("AlertServer is started ...");
-        alertRpcServer.start();
-        log.info("Alert server is started ...");
     }
 
     @PreDestroy
     public void close() {
-        destroy("alert server destroy");
+        String cause = "AlertServer destroy";
-    }
-
-    /**
-     * gracefully stop
-     *
-     * @param cause stop cause
-     */
-    public void destroy(String cause) {
-
         try {
             // set stop signal is true
             // execute only once
@@ -96,19 +71,14 @@ public class AlertServer {
                 log.warn("AlterServer is already stopped");
                 return;
             }
-            log.info("Alert server is stopping, cause: {}", cause);
+            log.info("AlertServer is stopping, cause: {}", cause);
-            try (
+            alertBootstrapService.close();
-                    AlertRpcServer closedAlertRpcServer = alertRpcServer;
-                    AlertBootstrapService closedAlertBootstrapService = alertBootstrapService;
-                    ListenerEventPostService closedListenerEventPostService = listenerEventPostService;
-                    AlertRegistryClient closedAlertRegistryClient = alertRegistryClient) {
-                // close resource
-            }
             // thread sleep 3 seconds for thread quietly stop
             ThreadUtils.sleep(Constants.SERVER_CLOSE_WAIT_TIME.toMillis());
-            log.info("Alter server stopped, cause: {}", cause);
+            log.info("AlertServer stopped, cause: {}", cause);
         } catch (Exception e) {
-            log.error("Alert server stop failed, cause: {}", cause, e);
+            log.error("AlertServer stop failed, cause: {}", cause, e);
         }
     }
+
 }

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/config/AlertConfig.java

@@ -43,6 +43,8 @@ public final class AlertConfig implements Validator {
 
     private Duration maxHeartbeatInterval = Duration.ofSeconds(60);
 
+    private int senderParallelism = 100;
+
     private String alertServerAddress;
 
     @Override
@@ -58,6 +60,10 @@ public final class AlertConfig implements Validator {
             errors.rejectValue("max-heartbeat-interval", null, "should be a valid duration");
         }
 
+        if (senderParallelism <= 0) {
+            errors.rejectValue("sender-parallelism", null, "should be a positive number");
+        }
+
         if (StringUtils.isEmpty(alertServerAddress)) {
             alertConfig.setAlertServerAddress(NetUtils.getAddr(alertConfig.getPort()));
         }

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/metrics/AlertServerMetrics.java

@@ -45,6 +45,12 @@ public class AlertServerMetrics {
                 .register(Metrics.globalRegistry);
     }
 
+    public void registerSendingAlertGauge(final Supplier<Number> supplier) {
+        Gauge.builder("ds.alert.sending", supplier)
+                .description("Number of sending alert")
+                .register(Metrics.globalRegistry);
+    }
+
     public static void registerUncachedException(final Supplier<Number> supplier) {
         Gauge.builder("ds.alert.uncached.exception", supplier)
                 .description("number of uncached exception")

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/plugin/AlertPluginManager.java

@@ -36,8 +36,8 @@ import lombok.extern.slf4j.Slf4j;
 
 import org.springframework.stereotype.Component;
 
-@Component
 @Slf4j
+@Component
 public final class AlertPluginManager {
 
     private final PluginDao pluginDao;

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/registry/AlertHeartbeatTask.java

@@ -18,6 +18,7 @@
 package org.apache.dolphinscheduler.alert.registry;
 
 import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.alert.service.AlertHAServer;
 import org.apache.dolphinscheduler.common.enums.ServerStatus;
 import org.apache.dolphinscheduler.common.model.AlertServerHeartBeat;
 import org.apache.dolphinscheduler.common.model.BaseHeartBeatTask;
@@ -42,12 +43,15 @@ public class AlertHeartbeatTask extends BaseHeartBeatTask<AlertServerHeartBeat>
     private final RegistryClient registryClient;
 
     private final MetricsProvider metricsProvider;
+
+    private final AlertHAServer alertHAServer;
     private final String heartBeatPath;
     private final long startupTime;
 
     public AlertHeartbeatTask(AlertConfig alertConfig,
                               MetricsProvider metricsProvider,
-                              RegistryClient registryClient) {
+                              RegistryClient registryClient,
+                              AlertHAServer alertHAServer) {
         super("AlertHeartbeatTask", alertConfig.getMaxHeartbeatInterval().toMillis());
         this.startupTime = System.currentTimeMillis();
         this.alertConfig = alertConfig;
@@ -55,6 +59,7 @@ public class AlertHeartbeatTask extends BaseHeartBeatTask<AlertServerHeartBeat>
         this.registryClient = registryClient;
         this.heartBeatPath =
                 RegistryNodeType.ALERT_SERVER.getRegistryPath() + "/" + alertConfig.getAlertServerAddress();
+        this.alertHAServer = alertHAServer;
         this.processId = OSUtils.getProcessID();
     }
 
@@ -70,6 +75,7 @@ public class AlertHeartbeatTask extends BaseHeartBeatTask<AlertServerHeartBeat>
                 .memoryUsage(systemMetrics.getSystemMemoryUsedPercentage())
                 .jvmMemoryUsage(systemMetrics.getJvmMemoryUsedPercentage())
                 .serverStatus(ServerStatus.NORMAL)
+                .isActive(alertHAServer.isActive())
                 .host(NetUtils.getHost())
                 .port(alertConfig.getPort())
                 .build();

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/registry/AlertRegistryClient.java

@@ -18,9 +18,9 @@
 package org.apache.dolphinscheduler.alert.registry;
 
 import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.alert.service.AlertHAServer;
 import org.apache.dolphinscheduler.meter.metrics.MetricsProvider;
 import org.apache.dolphinscheduler.registry.api.RegistryClient;
-import org.apache.dolphinscheduler.registry.api.enums.RegistryNodeType;
 
 import lombok.extern.slf4j.Slf4j;
 
@@ -42,10 +42,12 @@ public class AlertRegistryClient implements AutoCloseable {
 
     private AlertHeartbeatTask alertHeartbeatTask;
 
+    @Autowired
+    private AlertHAServer alertHAServer;
+
     public void start() {
         log.info("AlertRegistryClient starting...");
-        registryClient.getLock(RegistryNodeType.ALERT_LOCK.getRegistryPath());
+        alertHeartbeatTask = new AlertHeartbeatTask(alertConfig, metricsProvider, registryClient, alertHAServer);
-        alertHeartbeatTask = new AlertHeartbeatTask(alertConfig, metricsProvider, registryClient);
         alertHeartbeatTask.start();
         // start heartbeat task
         log.info("AlertRegistryClient started...");
@@ -55,7 +57,6 @@ public class AlertRegistryClient implements AutoCloseable {
     public void close() {
         log.info("AlertRegistryClient closing...");
         alertHeartbeatTask.shutdown();
-        registryClient.releaseLock(RegistryNodeType.ALERT_LOCK.getRegistryPath());
         log.info("AlertRegistryClient closed...");
     }
 

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/rpc/AlertOperatorImpl.java

@@ -16,7 +16,7 @@
  */
 package org.apache.dolphinscheduler.alert.rpc;
 
-import org.apache.dolphinscheduler.alert.service.AlertBootstrapService;
+import org.apache.dolphinscheduler.alert.service.AlertSender;
 import org.apache.dolphinscheduler.extract.alert.IAlertOperator;
 import org.apache.dolphinscheduler.extract.alert.request.AlertSendRequest;
 import org.apache.dolphinscheduler.extract.alert.request.AlertSendResponse;
@@ -32,16 +32,15 @@ import org.springframework.stereotype.Service;
 public class AlertOperatorImpl implements IAlertOperator {
 
     @Autowired
-    private AlertBootstrapService alertBootstrapService;
+    private AlertSender alertSender;
 
     @Override
     public AlertSendResponse sendAlert(AlertSendRequest alertSendRequest) {
         log.info("Received AlertSendRequest : {}", alertSendRequest);
-        AlertSendResponse alertSendResponse = alertBootstrapService.syncHandler(
+        AlertSendResponse alertSendResponse = alertSender.syncHandler(
                 alertSendRequest.getGroupId(),
                 alertSendRequest.getTitle(),
-                alertSendRequest.getContent(),
+                alertSendRequest.getContent());
-                alertSendRequest.getWarnType());
         log.info("Handle AlertSendRequest finish: {}", alertSendResponse);
         return alertSendResponse;
     }
@@ -49,7 +48,7 @@ public class AlertOperatorImpl implements IAlertOperator {
     @Override
     public AlertSendResponse sendTestAlert(AlertTestSendRequest alertSendRequest) {
         log.info("Received AlertTestSendRequest : {}", alertSendRequest);
-        AlertSendResponse alertSendResponse = alertBootstrapService.syncTestSend(
+        AlertSendResponse alertSendResponse = alertSender.syncTestSend(
                 alertSendRequest.getPluginDefineId(),
                 alertSendRequest.getPluginInstanceParams());
         log.info("Handle AlertTestSendRequest finish: {}", alertSendResponse);

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AbstractEventFetcher.java

@@ -0,0 +1,100 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.common.thread.BaseDaemonThread;
+
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public abstract class AbstractEventFetcher<T> extends BaseDaemonThread implements EventFetcher<T> {
+
+    protected static final int FETCH_SIZE = 100;
+
+    protected static final long FETCH_INTERVAL = 5_000;
+
+    protected final AlertHAServer alertHAServer;
+
+    private final EventPendingQueue<T> eventPendingQueue;
+
+    private final AtomicBoolean runningFlag = new AtomicBoolean(false);
+
+    private Integer eventOffset;
+
+    protected AbstractEventFetcher(String fetcherName,
+                                   AlertHAServer alertHAServer,
+                                   EventPendingQueue<T> eventPendingQueue) {
+        super(fetcherName);
+        this.alertHAServer = alertHAServer;
+        this.eventPendingQueue = eventPendingQueue;
+        this.eventOffset = -1;
+    }
+
+    @Override
+    public synchronized void start() {
+        if (!runningFlag.compareAndSet(false, true)) {
+            throw new IllegalArgumentException("AlertEventFetcher is already started");
+        }
+        log.info("AlertEventFetcher starting...");
+        super.start();
+        log.info("AlertEventFetcher started...");
+    }
+
+    @Override
+    public void run() {
+        while (runningFlag.get()) {
+            try {
+                if (!alertHAServer.isActive()) {
+                    log.debug("The current node is not active, will not loop Alert");
+                    Thread.sleep(FETCH_INTERVAL);
+                    continue;
+                }
+                List<T> pendingEvents = fetchPendingEvent(eventOffset);
+                if (CollectionUtils.isEmpty(pendingEvents)) {
+                    log.debug("No pending events found");
+                    Thread.sleep(FETCH_INTERVAL);
+                    continue;
+                }
+                for (T alert : pendingEvents) {
+                    eventPendingQueue.put(alert);
+                }
+                eventOffset = Math.max(eventOffset,
+                        pendingEvents.stream().map(this::getEventOffset).max(Integer::compareTo).get());
+            } catch (InterruptedException interruptedException) {
+                Thread.currentThread().interrupt();
+            } catch (Exception ex) {
+                log.error("AlertEventFetcher error", ex);
+            }
+        }
+    }
+
+    protected abstract int getEventOffset(T event);
+
+    @Override
+    public void shutdown() {
+        if (!runningFlag.compareAndSet(true, false)) {
+            log.warn("The AlertEventFetcher is not started");
+        }
+    }
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AbstractEventLoop.java

@@ -0,0 +1,101 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.common.thread.BaseDaemonThread;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public abstract class AbstractEventLoop<T> extends BaseDaemonThread implements EventLoop<T> {
+
+    private final EventPendingQueue<T> eventPendingQueue;
+
+    private final AtomicInteger handlingEventCount;
+
+    private final int eventHandleWorkerNum;
+
+    private final ThreadPoolExecutor threadPoolExecutor;
+
+    private final AtomicBoolean runningFlag = new AtomicBoolean(false);
+
+    protected AbstractEventLoop(String name,
+                                ThreadPoolExecutor threadPoolExecutor,
+                                EventPendingQueue<T> eventPendingQueue) {
+        super(name);
+        this.handlingEventCount = new AtomicInteger(0);
+        this.eventHandleWorkerNum = threadPoolExecutor.getMaximumPoolSize();
+        this.threadPoolExecutor = threadPoolExecutor;
+        this.eventPendingQueue = eventPendingQueue;
+    }
+
+    @Override
+    public synchronized void start() {
+        if (!runningFlag.compareAndSet(false, true)) {
+            throw new IllegalArgumentException(getClass().getName() + " is already started");
+        }
+        log.info("{} starting...", getClass().getName());
+        super.start();
+        log.info("{} started...", getClass().getName());
+    }
+
+    @Override
+    public void run() {
+        while (runningFlag.get()) {
+            try {
+                if (handlingEventCount.get() >= eventHandleWorkerNum) {
+                    log.debug("There is no idle event worker, waiting for a while...");
+                    Thread.sleep(1000);
+                    continue;
+                }
+                T pendingEvent = eventPendingQueue.take();
+                handlingEventCount.incrementAndGet();
+                CompletableFuture.runAsync(() -> handleEvent(pendingEvent), threadPoolExecutor)
+                        .whenComplete((aVoid, throwable) -> {
+                            if (throwable != null) {
+                                log.error("Handle event: {} error", pendingEvent, throwable);
+                            }
+                            handlingEventCount.decrementAndGet();
+                        });
+            } catch (InterruptedException interruptedException) {
+                Thread.currentThread().interrupt();
+                log.error("Loop event thread has been interrupted...");
+                break;
+            } catch (Exception ex) {
+                log.error("Loop event error", ex);
+            }
+        }
+    }
+
+    @Override
+    public int getHandlingEventCount() {
+        return handlingEventCount.get();
+    }
+
+    @Override
+    public void shutdown() {
+        if (!runningFlag.compareAndSet(true, false)) {
+            log.warn(getClass().getName() + " is not started");
+        }
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AbstractEventPendingQueue.java

@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import java.util.concurrent.LinkedBlockingQueue;
+
+public abstract class AbstractEventPendingQueue<T> implements EventPendingQueue<T> {
+
+    private final LinkedBlockingQueue<T> pendingAlertQueue;
+
+    private final int capacity;
+
+    protected AbstractEventPendingQueue(int capacity) {
+        this.capacity = capacity;
+        this.pendingAlertQueue = new LinkedBlockingQueue<>(capacity);
+    }
+
+    @Override
+    public void put(T alert) throws InterruptedException {
+        pendingAlertQueue.put(alert);
+    }
+
+    @Override
+    public T take() throws InterruptedException {
+        return pendingAlertQueue.take();
+    }
+
+    @Override
+    public int size() {
+        return pendingAlertQueue.size();
+    }
+
+    @Override
+    public int capacity() {
+        return capacity;
+    }
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AbstractEventSender.java

@@ -0,0 +1,191 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import org.apache.dolphinscheduler.alert.api.AlertChannel;
+import org.apache.dolphinscheduler.alert.api.AlertConstants;
+import org.apache.dolphinscheduler.alert.api.AlertData;
+import org.apache.dolphinscheduler.alert.api.AlertInfo;
+import org.apache.dolphinscheduler.alert.api.AlertResult;
+import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
+import org.apache.dolphinscheduler.common.enums.AlertStatus;
+import org.apache.dolphinscheduler.common.enums.AlertType;
+import org.apache.dolphinscheduler.common.utils.JSONUtils;
+import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
+import org.apache.dolphinscheduler.dao.entity.AlertSendStatus;
+import org.apache.dolphinscheduler.extract.alert.request.AlertSendResponse;
+import org.apache.dolphinscheduler.spi.params.PluginParamsTransfer;
+
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.exception.ExceptionUtils;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
+
+import lombok.extern.slf4j.Slf4j;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Lists;
+
+@Slf4j
+public abstract class AbstractEventSender<T> implements EventSender<T> {
+
+    protected final AlertPluginManager alertPluginManager;
+
+    private final long sendEventTimeout;
+
+    protected AbstractEventSender(AlertPluginManager alertPluginManager, long sendEventTimeout) {
+        this.alertPluginManager = alertPluginManager;
+        this.sendEventTimeout = sendEventTimeout;
+    }
+
+    @Override
+    public void sendEvent(T event) {
+        List<AlertPluginInstance> alertPluginInstanceList = getAlertPluginInstanceList(event);
+        if (CollectionUtils.isEmpty(alertPluginInstanceList)) {
+            onError(event, "No bind plugin instance found");
+            return;
+        }
+        AlertData alertData = getAlertData(event);
+        List<AlertSendStatus> alertSendStatuses = new ArrayList<>();
+        for (AlertPluginInstance instance : alertPluginInstanceList) {
+            AlertResult alertResult = doSendEvent(instance, alertData);
+            AlertStatus alertStatus =
+                    alertResult.isSuccess() ? AlertStatus.EXECUTION_SUCCESS : AlertStatus.EXECUTION_FAILURE;
+            AlertSendStatus alertSendStatus = AlertSendStatus.builder()
+                    .alertId(getEventId(event))
+                    .alertPluginInstanceId(instance.getId())
+                    .sendStatus(alertStatus)
+                    .log(JSONUtils.toJsonString(alertResult))
+                    .createTime(new Date())
+                    .build();
+            alertSendStatuses.add(alertSendStatus);
+        }
+        long failureCount = alertSendStatuses.stream()
+                .map(alertSendStatus -> alertSendStatus.getSendStatus() == AlertStatus.EXECUTION_FAILURE)
+                .count();
+        long successCount = alertSendStatuses.stream()
+                .map(alertSendStatus -> alertSendStatus.getSendStatus() == AlertStatus.EXECUTION_SUCCESS)
+                .count();
+        if (successCount == 0) {
+            onError(event, JSONUtils.toJsonString(alertSendStatuses));
+        } else {
+            if (failureCount > 0) {
+                onPartialSuccess(event, JSONUtils.toJsonString(alertSendStatuses));
+            } else {
+                onSuccess(event, JSONUtils.toJsonString(alertSendStatuses));
+            }
+        }
+    }
+
+    public abstract List<AlertPluginInstance> getAlertPluginInstanceList(T event);
+
+    public abstract AlertData getAlertData(T event);
+
+    public abstract Integer getEventId(T event);
+
+    public abstract void onError(T event, String log);
+
+    public abstract void onPartialSuccess(T event, String log);
+
+    public abstract void onSuccess(T event, String log);
+
+    @Override
+    public AlertResult doSendEvent(AlertPluginInstance instance, AlertData alertData) {
+        int pluginDefineId = instance.getPluginDefineId();
+        Optional<AlertChannel> alertChannelOptional = alertPluginManager.getAlertChannel(pluginDefineId);
+        if (!alertChannelOptional.isPresent()) {
+            return AlertResult.fail("Cannot find the alertPlugin: " + pluginDefineId);
+        }
+        AlertChannel alertChannel = alertChannelOptional.get();
+
+        AlertInfo alertInfo = AlertInfo.builder()
+                .alertData(alertData)
+                .alertParams(PluginParamsTransfer.getPluginParamsMap(instance.getPluginInstanceParams()))
+                .alertPluginInstanceId(instance.getId())
+                .build();
+        try {
+            AlertResult alertResult;
+            if (sendEventTimeout <= 0) {
+                if (alertData.getAlertType() == AlertType.CLOSE_ALERT.getCode()) {
+                    alertResult = alertChannel.closeAlert(alertInfo);
+                } else {
+                    alertResult = alertChannel.process(alertInfo);
+                }
+            } else {
+                CompletableFuture<AlertResult> future;
+                if (alertData.getAlertType() == AlertType.CLOSE_ALERT.getCode()) {
+                    future = CompletableFuture.supplyAsync(() -> alertChannel.closeAlert(alertInfo));
+                } else {
+                    future = CompletableFuture.supplyAsync(() -> alertChannel.process(alertInfo));
+                }
+                alertResult = future.get(sendEventTimeout, TimeUnit.MILLISECONDS);
+            }
+            checkNotNull(alertResult, "AlertResult cannot be null");
+            return alertResult;
+        } catch (InterruptedException interruptedException) {
+            Thread.currentThread().interrupt();
+            return AlertResult.fail(ExceptionUtils.getMessage(interruptedException));
+        } catch (Exception e) {
+            log.error("Send alert data {} failed", alertData, e);
+            return AlertResult.fail(ExceptionUtils.getMessage(e));
+        }
+    }
+
+    @Override
+    public AlertSendResponse syncTestSend(int pluginDefineId, String pluginInstanceParams) {
+
+        Optional<AlertChannel> alertChannelOptional = alertPluginManager.getAlertChannel(pluginDefineId);
+        if (!alertChannelOptional.isPresent()) {
+            AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
+                    AlertSendResponse.AlertSendResponseResult.fail("Cannot find the alertPlugin: " + pluginDefineId);
+            return AlertSendResponse.fail(Lists.newArrayList(alertSendResponseResult));
+        }
+        AlertData alertData = AlertData.builder()
+                .title(AlertConstants.TEST_TITLE)
+                .content(AlertConstants.TEST_CONTENT)
+                .build();
+
+        AlertInfo alertInfo = AlertInfo.builder()
+                .alertData(alertData)
+                .alertParams(PluginParamsTransfer.getPluginParamsMap(pluginInstanceParams))
+                .build();
+
+        try {
+            AlertResult alertResult = alertChannelOptional.get().process(alertInfo);
+            Preconditions.checkNotNull(alertResult, "AlertResult cannot be null");
+            if (alertResult.isSuccess()) {
+                return AlertSendResponse
+                        .success(Lists.newArrayList(AlertSendResponse.AlertSendResponseResult.success()));
+            }
+            return AlertSendResponse.fail(
+                    Lists.newArrayList(AlertSendResponse.AlertSendResponseResult.fail(alertResult.getMessage())));
+        } catch (Exception e) {
+            log.error("Test send alert error", e);
+            return new AlertSendResponse(false,
+                    Lists.newArrayList(AlertSendResponse.AlertSendResponseResult.fail(ExceptionUtils.getMessage(e))));
+        }
+
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AlertBootstrapService.java

@@ -17,350 +17,84 @@
 
 package org.apache.dolphinscheduler.alert.service;
 
-import org.apache.dolphinscheduler.alert.api.AlertChannel;
-import org.apache.dolphinscheduler.alert.api.AlertConstants;
-import org.apache.dolphinscheduler.alert.api.AlertData;
-import org.apache.dolphinscheduler.alert.api.AlertInfo;
-import org.apache.dolphinscheduler.alert.api.AlertResult;
-import org.apache.dolphinscheduler.alert.config.AlertConfig;
-import org.apache.dolphinscheduler.alert.metrics.AlertServerMetrics;
 import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
-import org.apache.dolphinscheduler.common.constants.Constants;
+import org.apache.dolphinscheduler.alert.registry.AlertRegistryClient;
-import org.apache.dolphinscheduler.common.enums.AlertStatus;
+import org.apache.dolphinscheduler.alert.rpc.AlertRpcServer;
-import org.apache.dolphinscheduler.common.enums.AlertType;
-import org.apache.dolphinscheduler.common.enums.WarningType;
-import org.apache.dolphinscheduler.common.lifecycle.ServerLifeCycleManager;
-import org.apache.dolphinscheduler.common.thread.BaseDaemonThread;
-import org.apache.dolphinscheduler.common.thread.ThreadUtils;
-import org.apache.dolphinscheduler.common.utils.JSONUtils;
-import org.apache.dolphinscheduler.dao.AlertDao;
-import org.apache.dolphinscheduler.dao.entity.Alert;
-import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
-import org.apache.dolphinscheduler.dao.entity.AlertSendStatus;
-import org.apache.dolphinscheduler.extract.alert.request.AlertSendResponse;
-import org.apache.dolphinscheduler.spi.params.PluginParamsTransfer;
-
-import org.apache.commons.collections4.CollectionUtils;
-import org.apache.commons.collections4.MapUtils;
-
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.TimeUnit;
-
-import javax.annotation.Nullable;
 
 import lombok.extern.slf4j.Slf4j;
 
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
-import com.google.common.collect.Lists;
-
-@Service
-@Slf4j
-public final class AlertBootstrapService extends BaseDaemonThread implements AutoCloseable {
-
-    @Autowired
-    private AlertDao alertDao;
-    @Autowired
-    private AlertPluginManager alertPluginManager;
-    @Autowired
-    private AlertConfig alertConfig;
-
-    public AlertBootstrapService() {
-        super("AlertBootstrapService");
-    }
-
-    @Override
-    public void run() {
-        log.info("Alert sender thread started");
-        while (!ServerLifeCycleManager.isStopped()) {
-            try {
-                List<Alert> alerts = alertDao.listPendingAlerts();
-                if (CollectionUtils.isEmpty(alerts)) {
-                    log.debug("There is not waiting alerts");
-                    continue;
-                }
-                AlertServerMetrics.registerPendingAlertGauge(alerts::size);
-                this.send(alerts);
-            } catch (Exception e) {
-                log.error("Alert sender thread meet an exception", e);
-            } finally {
-                ThreadUtils.sleep(Constants.SLEEP_TIME_MILLIS * 5L);
-            }
-        }
-        log.info("Alert sender thread stopped");
-    }
-
-    public void send(List<Alert> alerts) {
-        for (Alert alert : alerts) {
-            // get alert group from alert
-            int alertId = alert.getId();
-            int alertGroupId = Optional.ofNullable(alert.getAlertGroupId()).orElse(0);
-            List<AlertPluginInstance> alertInstanceList = alertDao.listInstanceByAlertGroupId(alertGroupId);
-            if (CollectionUtils.isEmpty(alertInstanceList)) {
-                log.error("send alert msg fail,no bind plugin instance.");
-                List<AlertResult> alertResults = Lists.newArrayList(new AlertResult("false",
-                        "no bind plugin instance"));
-                alertDao.updateAlert(AlertStatus.EXECUTION_FAILURE, JSONUtils.toJsonString(alertResults), alertId);
-                continue;
-            }
-            AlertData alertData = AlertData.builder()
-                    .id(alertId)
-                    .content(alert.getContent())
-                    .log(alert.getLog())
-                    .title(alert.getTitle())
-                    .warnType(alert.getWarningType().getCode())
-                    .alertType(alert.getAlertType().getCode())
-                    .build();
-
-            int sendSuccessCount = 0;
-            List<AlertSendStatus> alertSendStatuses = new ArrayList<>();
-            List<AlertResult> alertResults = new ArrayList<>();
-            for (AlertPluginInstance instance : alertInstanceList) {
-                AlertResult alertResult = this.alertResultHandler(instance, alertData);
-                if (alertResult != null) {
-                    AlertStatus sendStatus = Boolean.parseBoolean(alertResult.getStatus())
-                            ? AlertStatus.EXECUTION_SUCCESS
-                            : AlertStatus.EXECUTION_FAILURE;
-                    AlertSendStatus alertSendStatus = AlertSendStatus.builder()
-                            .alertId(alertId)
-                            .alertPluginInstanceId(instance.getId())
-                            .sendStatus(sendStatus)
-                            .log(JSONUtils.toJsonString(alertResult))
-                            .createTime(new Date())
-                            .build();
-                    alertSendStatuses.add(alertSendStatus);
-                    if (AlertStatus.EXECUTION_SUCCESS.equals(sendStatus)) {
-                        sendSuccessCount++;
-                        AlertServerMetrics.incAlertSuccessCount();
-                    } else {
-                        AlertServerMetrics.incAlertFailCount();
-                    }
-                    alertResults.add(alertResult);
-                }
-            }
-            AlertStatus alertStatus = AlertStatus.EXECUTION_SUCCESS;
-            if (sendSuccessCount == 0) {
-                alertStatus = AlertStatus.EXECUTION_FAILURE;
-            } else if (sendSuccessCount < alertInstanceList.size()) {
-                alertStatus = AlertStatus.EXECUTION_PARTIAL_SUCCESS;
-            }
-            // we update the alert first to avoid duplicate key in alertSendStatus
-            // this may loss the alertSendStatus if the server restart
-            // todo: use transaction to update these two table
-            alertDao.updateAlert(alertStatus, JSONUtils.toJsonString(alertResults), alertId);
-            alertDao.insertAlertSendStatus(alertSendStatuses);
-        }
-    }
-
 /**
-     * sync send alert handler
+ * The bootstrap service for alert server. it will start all the necessary component for alert server.
-     *
-     * @param alertGroupId alertGroupId
-     * @param title        title
-     * @param content      content
-     * @return AlertSendResponseCommand
  */
-    public AlertSendResponse syncHandler(int alertGroupId, String title, String content, int warnType) {
+@Slf4j
-        List<AlertPluginInstance> alertInstanceList = alertDao.listInstanceByAlertGroupId(alertGroupId);
+@Service
-        AlertData alertData = AlertData.builder()
+public final class AlertBootstrapService implements AutoCloseable {
-                .content(content)
-                .title(title)
-                .warnType(warnType)
-                .build();
-
-        boolean sendResponseStatus = true;
-        List<AlertSendResponse.AlertSendResponseResult> sendResponseResults = new ArrayList<>();
-
-        if (CollectionUtils.isEmpty(alertInstanceList)) {
-            AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
-                    new AlertSendResponse.AlertSendResponseResult();
-            String message = String.format("Alert GroupId %s send error : not found alert instance", alertGroupId);
-            alertSendResponseResult.setSuccess(false);
-            alertSendResponseResult.setMessage(message);
-            sendResponseResults.add(alertSendResponseResult);
-            log.error("Alert GroupId {} send error : not found alert instance", alertGroupId);
-            return new AlertSendResponse(false, sendResponseResults);
-        }
-
-        for (AlertPluginInstance instance : alertInstanceList) {
-            AlertResult alertResult = this.alertResultHandler(instance, alertData);
-            if (alertResult != null) {
-                AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
-                        new AlertSendResponse.AlertSendResponseResult(
-                                Boolean.parseBoolean(alertResult.getStatus()),
-                                alertResult.getMessage());
-                sendResponseStatus = sendResponseStatus && alertSendResponseResult.isSuccess();
-                sendResponseResults.add(alertSendResponseResult);
-            }
-        }
-
-        return new AlertSendResponse(sendResponseStatus, sendResponseResults);
-    }
-
-    /**
-     * alert result handler
-     *
-     * @param instance  instance
-     * @param alertData alertData
-     * @return AlertResult
-     */
-    private @Nullable AlertResult alertResultHandler(AlertPluginInstance instance, AlertData alertData) {
-        String pluginInstanceName = instance.getInstanceName();
-        int pluginDefineId = instance.getPluginDefineId();
-        Optional<AlertChannel> alertChannelOptional = alertPluginManager.getAlertChannel(instance.getPluginDefineId());
-        if (!alertChannelOptional.isPresent()) {
-            String message = String.format("Alert Plugin %s send error: the channel doesn't exist, pluginDefineId: %s",
-                    pluginInstanceName,
-                    pluginDefineId);
-            log.error("Alert Plugin {} send error : not found plugin {}", pluginInstanceName, pluginDefineId);
-            return new AlertResult("false", message);
-        }
-        AlertChannel alertChannel = alertChannelOptional.get();
 
-        Map<String, String> paramsMap = JSONUtils.toMap(instance.getPluginInstanceParams());
+    private final AlertRpcServer alertRpcServer;
-        String instanceWarnType = WarningType.ALL.getDescp();
 
-        if (MapUtils.isNotEmpty(paramsMap)) {
+    private final AlertRegistryClient alertRegistryClient;
-            instanceWarnType = paramsMap.getOrDefault(AlertConstants.NAME_WARNING_TYPE, WarningType.ALL.getDescp());
-        }
 
-        WarningType warningType = WarningType.of(instanceWarnType);
+    private final AlertPluginManager alertPluginManager;
 
-        if (warningType == null) {
+    private final AlertHAServer alertHAServer;
-            String message = String.format("Alert Plugin %s send error : plugin warnType is null", pluginInstanceName);
-            log.error("Alert Plugin {} send error : plugin warnType is null", pluginInstanceName);
-            return new AlertResult("false", message);
-        }
-
-        boolean sendWarning = false;
-        switch (warningType) {
-            case ALL:
-                sendWarning = true;
-                break;
-            case SUCCESS:
-                if (alertData.getWarnType() == WarningType.SUCCESS.getCode()) {
-                    sendWarning = true;
-                }
-                break;
-            case FAILURE:
-                if (alertData.getWarnType() == WarningType.FAILURE.getCode()) {
-                    sendWarning = true;
-                }
-                break;
-            default:
-        }
 
-        if (!sendWarning) {
+    private final AlertEventFetcher alertEventFetcher;
-            String message = String.format(
-                    "Alert Plugin %s send ignore warning type not match: plugin warning type is %s, alert data warning type is %s",
-                    pluginInstanceName, warningType.getCode(), alertData.getWarnType());
-            log.info(
-                    "Alert Plugin {} send ignore warning type not match: plugin warning type is {}, alert data warning type is {}",
-                    pluginInstanceName, warningType.getCode(), alertData.getWarnType());
-            return new AlertResult("false", message);
-        }
 
-        AlertInfo alertInfo = AlertInfo.builder()
+    private final AlertEventLoop alertEventLoop;
-                .alertData(alertData)
-                .alertParams(paramsMap)
-                .alertPluginInstanceId(instance.getId())
-                .build();
-        int waitTimeout = alertConfig.getWaitTimeout();
-        try {
-            AlertResult alertResult;
-            if (waitTimeout <= 0) {
-                if (alertData.getAlertType() == AlertType.CLOSE_ALERT.getCode()) {
-                    alertResult = alertChannel.closeAlert(alertInfo);
-                } else {
-                    alertResult = alertChannel.process(alertInfo);
-                }
-            } else {
-                CompletableFuture<AlertResult> future;
-                if (alertData.getAlertType() == AlertType.CLOSE_ALERT.getCode()) {
-                    future = CompletableFuture.supplyAsync(() -> alertChannel.closeAlert(alertInfo));
-                } else {
-                    future = CompletableFuture.supplyAsync(() -> alertChannel.process(alertInfo));
-                }
-                alertResult = future.get(waitTimeout, TimeUnit.MILLISECONDS);
-            }
-            if (alertResult == null) {
-                throw new RuntimeException("Alert result cannot be null");
-            }
-            return alertResult;
-        } catch (InterruptedException e) {
-            log.error("send alert error alert data id :{},", alertData.getId(), e);
-            Thread.currentThread().interrupt();
-            return new AlertResult("false", e.getMessage());
-        } catch (Exception e) {
-            log.error("send alert error alert data id :{},", alertData.getId(), e);
-            return new AlertResult("false", e.getMessage());
-        }
-    }
 
-    public AlertSendResponse syncTestSend(int pluginDefineId, String pluginInstanceParams) {
+    private final ListenerEventLoop listenerEventLoop;
 
-        boolean sendResponseStatus = true;
+    private final ListenerEventFetcher listenerEventFetcher;
-        List<AlertSendResponse.AlertSendResponseResult> sendResponseResults = new ArrayList<>();
 
-        Optional<AlertChannel> alertChannelOptional = alertPluginManager.getAlertChannel(pluginDefineId);
+    public AlertBootstrapService(AlertRpcServer alertRpcServer,
-        if (!alertChannelOptional.isPresent()) {
+                                 AlertRegistryClient alertRegistryClient,
-            String message = String.format("Test send alert error: the channel doesn't exist, pluginDefineId: %s",
+                                 AlertPluginManager alertPluginManager,
-                    pluginDefineId);
+                                 AlertHAServer alertHAServer,
-            AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
+                                 AlertEventFetcher alertEventFetcher,
-                    new AlertSendResponse.AlertSendResponseResult();
+                                 AlertEventLoop alertEventLoop,
-            alertSendResponseResult.setSuccess(false);
+                                 ListenerEventLoop listenerEventLoop,
-            alertSendResponseResult.setMessage(message);
+                                 ListenerEventFetcher listenerEventFetcher) {
-            sendResponseResults.add(alertSendResponseResult);
+        this.alertRpcServer = alertRpcServer;
-            log.error("Test send alert error : not found plugin {}", pluginDefineId);
+        this.alertRegistryClient = alertRegistryClient;
-            return new AlertSendResponse(false, sendResponseResults);
+        this.alertPluginManager = alertPluginManager;
+        this.alertHAServer = alertHAServer;
+        this.alertEventFetcher = alertEventFetcher;
+        this.alertEventLoop = alertEventLoop;
+        this.listenerEventLoop = listenerEventLoop;
+        this.listenerEventFetcher = listenerEventFetcher;
     }
-        AlertChannel alertChannel = alertChannelOptional.get();
 
-        Map<String, String> paramsMap = PluginParamsTransfer.getPluginParamsMap(pluginInstanceParams);
+    public void start() {
+        log.info("AlertBootstrapService starting...");
+        alertPluginManager.start();
+        alertRpcServer.start();
+        alertRegistryClient.start();
+        alertHAServer.start();
 
-        AlertData alertData = AlertData.builder()
+        listenerEventFetcher.start();
-                .title(AlertConstants.TEST_TITLE)
+        alertEventFetcher.start();
-                .content(AlertConstants.TEST_CONTENT)
-                .warnType(WarningType.ALL.getCode())
-                .build();
 
-        AlertInfo alertInfo = AlertInfo.builder()
+        listenerEventLoop.start();
-                .alertData(alertData)
+        alertEventLoop.start();
-                .alertParams(paramsMap)
+        log.info("AlertBootstrapService started...");
-                .build();
-
-        try {
-            AlertResult alertResult = alertChannel.process(alertInfo);
-            if (alertResult != null) {
-                AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
-                        new AlertSendResponse.AlertSendResponseResult(
-                                Boolean.parseBoolean(alertResult.getStatus()),
-                                alertResult.getMessage());
-                sendResponseStatus = alertSendResponseResult.isSuccess();
-                sendResponseResults.add(alertSendResponseResult);
-            }
-        } catch (Exception e) {
-            log.error("Test send alert error", e);
-            AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
-                    new AlertSendResponse.AlertSendResponseResult();
-            alertSendResponseResult.setSuccess(false);
-            alertSendResponseResult.setMessage(e.getMessage());
-            sendResponseResults.add(alertSendResponseResult);
-            return new AlertSendResponse(false, sendResponseResults);
-        }
-
-        return new AlertSendResponse(sendResponseStatus, sendResponseResults);
     }
 
     @Override
     public void close() {
-        log.info("Closed AlertBootstrapService...");
+        log.info("AlertBootstrapService stopping...");
-    }
+        try (
+                AlertRpcServer closedAlertRpcServer = alertRpcServer;
+                AlertRegistryClient closedAlertRegistryClient = alertRegistryClient) {
+            // close resource
+            listenerEventFetcher.shutdown();
+            alertEventFetcher.shutdown();
 
+            listenerEventLoop.shutdown();
+            alertEventLoop.shutdown();
+            alertHAServer.shutdown();
+        }
+        log.info("AlertBootstrapService stopped...");
+    }
 }

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AlertEventFetcher.java

@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.dao.AlertDao;
+import org.apache.dolphinscheduler.dao.entity.Alert;
+
+import java.util.List;
+
+import lombok.extern.slf4j.Slf4j;
+
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class AlertEventFetcher extends AbstractEventFetcher<Alert> {
+
+    private final AlertDao alertDao;
+
+    public AlertEventFetcher(AlertHAServer alertHAServer,
+                             AlertDao alertDao,
+                             AlertEventPendingQueue alertEventPendingQueue) {
+        super("AlertEventFetcher", alertHAServer, alertEventPendingQueue);
+        this.alertDao = alertDao;
+    }
+
+    @Override
+    public List<Alert> fetchPendingEvent(int eventOffset) {
+        return alertDao.listPendingAlerts(eventOffset);
+    }
+
+    @Override
+    protected int getEventOffset(Alert event) {
+        return event.getId();
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AlertEventLoop.java

@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.alert.metrics.AlertServerMetrics;
+import org.apache.dolphinscheduler.dao.entity.Alert;
+
+import lombok.extern.slf4j.Slf4j;
+
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class AlertEventLoop extends AbstractEventLoop<Alert> {
+
+    private final AlertSender alertSender;
+
+    public AlertEventLoop(AlertEventPendingQueue alertEventPendingQueue,
+                          AlertSenderThreadPoolFactory alertSenderThreadPoolFactory,
+                          AlertSender alertSender) {
+        super("AlertEventLoop", alertSenderThreadPoolFactory.getThreadPool(), alertEventPendingQueue);
+        this.alertSender = alertSender;
+        AlertServerMetrics.registerPendingAlertGauge(this::getHandlingEventCount);
+    }
+
+    @Override
+    public void handleEvent(Alert event) {
+        alertSender.sendEvent(event);
+    }
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AlertEventPendingQueue.java

@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.alert.metrics.AlertServerMetrics;
+import org.apache.dolphinscheduler.dao.entity.Alert;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class AlertEventPendingQueue extends AbstractEventPendingQueue<Alert> {
+
+    public AlertEventPendingQueue(AlertConfig alertConfig) {
+        super(alertConfig.getSenderParallelism() * 3 + 1);
+        AlertServerMetrics.registerPendingAlertGauge(this::size);
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AlertHAServer.java

@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.registry.api.Registry;
+import org.apache.dolphinscheduler.registry.api.enums.RegistryNodeType;
+import org.apache.dolphinscheduler.registry.api.ha.AbstractHAServer;
+
+import lombok.extern.slf4j.Slf4j;
+
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class AlertHAServer extends AbstractHAServer {
+
+    public AlertHAServer(Registry registry) {
+        super(registry, RegistryNodeType.ALERT_LOCK.getRegistryPath());
+    }
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AlertSender.java

@@ -0,0 +1,131 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.alert.api.AlertData;
+import org.apache.dolphinscheduler.alert.api.AlertResult;
+import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
+import org.apache.dolphinscheduler.common.enums.AlertStatus;
+import org.apache.dolphinscheduler.dao.AlertDao;
+import org.apache.dolphinscheduler.dao.entity.Alert;
+import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
+import org.apache.dolphinscheduler.extract.alert.request.AlertSendResponse;
+
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import lombok.extern.slf4j.Slf4j;
+
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class AlertSender extends AbstractEventSender<Alert> {
+
+    private final AlertDao alertDao;
+
+    public AlertSender(AlertDao alertDao,
+                       AlertPluginManager alertPluginManager,
+                       AlertConfig alertConfig) {
+        super(alertPluginManager, alertConfig.getWaitTimeout());
+        this.alertDao = alertDao;
+    }
+
+    /**
+     * sync send alert handler
+     *
+     * @param alertGroupId alertGroupId
+     * @param title        title
+     * @param content      content
+     * @return AlertSendResponseCommand
+     */
+    public AlertSendResponse syncHandler(int alertGroupId, String title, String content) {
+        List<AlertPluginInstance> alertInstanceList = alertDao.listInstanceByAlertGroupId(alertGroupId);
+        AlertData alertData = AlertData.builder()
+                .content(content)
+                .title(title)
+                .build();
+
+        boolean sendResponseStatus = true;
+        List<AlertSendResponse.AlertSendResponseResult> sendResponseResults = new ArrayList<>();
+
+        if (CollectionUtils.isEmpty(alertInstanceList)) {
+            AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
+                    new AlertSendResponse.AlertSendResponseResult();
+            String message = String.format("Alert GroupId %s send error : not found alert instance", alertGroupId);
+            alertSendResponseResult.setSuccess(false);
+            alertSendResponseResult.setMessage(message);
+            sendResponseResults.add(alertSendResponseResult);
+            log.error("Alert GroupId {} send error : not found alert instance", alertGroupId);
+            return new AlertSendResponse(false, sendResponseResults);
+        }
+
+        for (AlertPluginInstance instance : alertInstanceList) {
+            AlertResult alertResult = doSendEvent(instance, alertData);
+            if (alertResult != null) {
+                AlertSendResponse.AlertSendResponseResult alertSendResponseResult =
+                        new AlertSendResponse.AlertSendResponseResult(
+                                alertResult.isSuccess(),
+                                alertResult.getMessage());
+                sendResponseStatus = sendResponseStatus && alertSendResponseResult.isSuccess();
+                sendResponseResults.add(alertSendResponseResult);
+            }
+        }
+
+        return new AlertSendResponse(sendResponseStatus, sendResponseResults);
+    }
+
+    @Override
+    public List<AlertPluginInstance> getAlertPluginInstanceList(Alert event) {
+        return alertDao.listInstanceByAlertGroupId(event.getAlertGroupId());
+    }
+
+    @Override
+    public AlertData getAlertData(Alert event) {
+        return AlertData.builder()
+                .id(event.getId())
+                .content(event.getContent())
+                .log(event.getLog())
+                .title(event.getTitle())
+                .alertType(event.getAlertType().getCode())
+                .build();
+    }
+
+    @Override
+    public Integer getEventId(Alert event) {
+        return event.getId();
+    }
+
+    @Override
+    public void onError(Alert event, String log) {
+        alertDao.updateAlert(AlertStatus.EXECUTION_FAILURE, log, event.getId());
+    }
+
+    @Override
+    public void onPartialSuccess(Alert event, String log) {
+        alertDao.updateAlert(AlertStatus.EXECUTION_PARTIAL_SUCCESS, log, event.getId());
+    }
+
+    @Override
+    public void onSuccess(Alert event, String log) {
+        alertDao.updateAlert(AlertStatus.EXECUTION_SUCCESS, log, event.getId());
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/AlertSenderThreadPoolFactory.java

@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.common.thread.ThreadUtils;
+
+import java.util.concurrent.ThreadPoolExecutor;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class AlertSenderThreadPoolFactory {
+
+    private final ThreadPoolExecutor threadPool;
+
+    public AlertSenderThreadPoolFactory(AlertConfig alertConfig) {
+        this.threadPool = ThreadUtils.newDaemonFixedThreadExecutor("AlertSenderThread",
+                alertConfig.getSenderParallelism());
+    }
+
+    public ThreadPoolExecutor getThreadPool() {
+        return threadPool;
+    }
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/EventFetcher.java

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import java.util.List;
+
+/**
+ * The interface responsible for fetching events.
+ *
+ * @param <T> the type of event
+ */
+public interface EventFetcher<T> {
+
+    void start();
+
+    List<T> fetchPendingEvent(int eventOffset);
+
+    void shutdown();
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/EventLoop.java

@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+/**
+ * The interface responsible for consuming event from upstream, e.g {@link EventPendingQueue}.
+ *
+ * @param <T> the type of event
+ */
+public interface EventLoop<T> {
+
+    /**
+     * Start the event loop, once the event loop is started, it will keep consuming event from upstream.
+     */
+    void start();
+
+    /**
+     * Handle the given event.
+     */
+    void handleEvent(T event);
+
+    /**
+     * Get the count of handling event.
+     */
+    int getHandlingEventCount();
+
+    /**
+     * Shutdown the event loop, once the event loop is shutdown, it will stop consuming event from upstream.
+     */
+    void shutdown();
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/EventPendingQueue.java

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+/**
+ * The interface responsible for managing pending events.
+ *
+ * @param <T> the type of event
+ */
+public interface EventPendingQueue<T> {
+
+    void put(T alert) throws InterruptedException;
+
+    T take() throws InterruptedException;
+
+    int size();
+
+    int capacity();
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/EventSender.java

@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.alert.api.AlertData;
+import org.apache.dolphinscheduler.alert.api.AlertResult;
+import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
+import org.apache.dolphinscheduler.extract.alert.request.AlertSendResponse;
+
+public interface EventSender<T> {
+
+    void sendEvent(T event);
+
+    AlertResult doSendEvent(AlertPluginInstance instance, AlertData alertData);
+
+    AlertSendResponse syncTestSend(int pluginDefineId, String pluginInstanceParams);
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/ListenerEventFetcher.java

@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
+import org.apache.dolphinscheduler.dao.repository.ListenerEventDao;
+
+import java.util.List;
+
+import lombok.extern.slf4j.Slf4j;
+
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class ListenerEventFetcher extends AbstractEventFetcher<ListenerEvent> {
+
+    private final ListenerEventDao listenerEventDao;
+
+    protected ListenerEventFetcher(AlertHAServer alertHAServer,
+                                   ListenerEventDao listenerEventDao,
+                                   ListenerEventPendingQueue listenerEventPendingQueue) {
+        super("ListenerEventFetcher", alertHAServer, listenerEventPendingQueue);
+        this.listenerEventDao = listenerEventDao;
+    }
+
+    @Override
+    protected int getEventOffset(ListenerEvent event) {
+        return event.getId();
+    }
+
+    @Override
+    public List<ListenerEvent> fetchPendingEvent(int eventOffset) {
+        return listenerEventDao.listingPendingEvents(eventOffset, FETCH_SIZE);
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/ListenerEventLoop.java

@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class ListenerEventLoop extends AbstractEventLoop<ListenerEvent> {
+
+    private final ListenerEventSender listenerEventSender;
+
+    protected ListenerEventLoop(AlertSenderThreadPoolFactory alertSenderThreadPoolFactory,
+                                ListenerEventSender listenerEventSender,
+                                ListenerEventPendingQueue listenerEventPendingQueue) {
+        super("ListenerEventLoop", alertSenderThreadPoolFactory.getThreadPool(), listenerEventPendingQueue);
+        this.listenerEventSender = listenerEventSender;
+    }
+
+    @Override
+    public void handleEvent(ListenerEvent event) {
+        listenerEventSender.sendEvent(event);
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/ListenerEventPendingQueue.java

@@ -0,0 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class ListenerEventPendingQueue extends AbstractEventPendingQueue<ListenerEvent> {
+
+    public ListenerEventPendingQueue(AlertConfig alertConfig) {
+        super(alertConfig.getSenderParallelism() * 3 + 1);
+    }
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/ListenerEventPostService.java

@@ -1,262 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.dolphinscheduler.alert.service;
-
-import org.apache.dolphinscheduler.alert.api.AlertChannel;
-import org.apache.dolphinscheduler.alert.api.AlertData;
-import org.apache.dolphinscheduler.alert.api.AlertInfo;
-import org.apache.dolphinscheduler.alert.api.AlertResult;
-import org.apache.dolphinscheduler.alert.config.AlertConfig;
-import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
-import org.apache.dolphinscheduler.common.constants.Constants;
-import org.apache.dolphinscheduler.common.enums.AlertStatus;
-import org.apache.dolphinscheduler.common.enums.AlertType;
-import org.apache.dolphinscheduler.common.enums.WarningType;
-import org.apache.dolphinscheduler.common.lifecycle.ServerLifeCycleManager;
-import org.apache.dolphinscheduler.common.thread.BaseDaemonThread;
-import org.apache.dolphinscheduler.common.thread.ThreadUtils;
-import org.apache.dolphinscheduler.common.utils.JSONUtils;
-import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
-import org.apache.dolphinscheduler.dao.entity.AlertSendStatus;
-import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.AbstractListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.ProcessDefinitionCreatedListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.ProcessDefinitionDeletedListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.ProcessDefinitionUpdatedListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.ProcessEndListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.ProcessFailListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.ProcessStartListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.ServerDownListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.TaskEndListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.TaskFailListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.event.TaskStartListenerEvent;
-import org.apache.dolphinscheduler.dao.mapper.AlertPluginInstanceMapper;
-import org.apache.dolphinscheduler.dao.mapper.ListenerEventMapper;
-
-import org.apache.commons.collections4.CollectionUtils;
-import org.apache.curator.shaded.com.google.common.collect.Lists;
-
-import java.util.ArrayList;
-import java.util.Date;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.TimeUnit;
-
-import javax.annotation.Nullable;
-
-import lombok.extern.slf4j.Slf4j;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.stereotype.Service;
-
-@Service
-@Slf4j
-public final class ListenerEventPostService extends BaseDaemonThread implements AutoCloseable {
-
-    @Value("${alert.query_alert_threshold:100}")
-    private Integer QUERY_ALERT_THRESHOLD;
-    @Autowired
-    private ListenerEventMapper listenerEventMapper;
-    @Autowired
-    private AlertPluginInstanceMapper alertPluginInstanceMapper;
-    @Autowired
-    private AlertPluginManager alertPluginManager;
-    @Autowired
-    private AlertConfig alertConfig;
-
-    public ListenerEventPostService() {
-        super("ListenerEventPostService");
-    }
-
-    @Override
-    public void run() {
-        log.info("listener event post thread started");
-        while (!ServerLifeCycleManager.isStopped()) {
-            try {
-                List<ListenerEvent> listenerEvents = listenerEventMapper
-                        .listingListenerEventByStatus(AlertStatus.WAIT_EXECUTION, QUERY_ALERT_THRESHOLD);
-                if (CollectionUtils.isEmpty(listenerEvents)) {
-                    log.debug("There is no waiting listener events");
-                    continue;
-                }
-                this.send(listenerEvents);
-            } catch (Exception e) {
-                log.error("listener event post thread meet an exception", e);
-            } finally {
-                ThreadUtils.sleep(Constants.SLEEP_TIME_MILLIS * 5L);
-            }
-        }
-        log.info("listener event post thread stopped");
-    }
-
-    public void send(List<ListenerEvent> listenerEvents) {
-        for (ListenerEvent listenerEvent : listenerEvents) {
-            int eventId = listenerEvent.getId();
-            List<AlertPluginInstance> globalAlertInstanceList =
-                    alertPluginInstanceMapper.queryAllGlobalAlertPluginInstanceList();
-            if (CollectionUtils.isEmpty(globalAlertInstanceList)) {
-                log.error("post listener event fail,no bind global plugin instance.");
-                listenerEventMapper.updateListenerEvent(eventId, AlertStatus.EXECUTION_FAILURE,
-                        "no bind plugin instance", new Date());
-                continue;
-            }
-            AbstractListenerEvent event = generateEventFromContent(listenerEvent);
-            if (event == null) {
-                log.error("parse listener event to abstract listener event fail.ed {}", listenerEvent.getContent());
-                listenerEventMapper.updateListenerEvent(eventId, AlertStatus.EXECUTION_FAILURE,
-                        "parse listener event to abstract listener event failed", new Date());
-                continue;
-            }
-            List<AbstractListenerEvent> events = Lists.newArrayList(event);
-            AlertData alertData = AlertData.builder()
-                    .id(eventId)
-                    .content(JSONUtils.toJsonString(events))
-                    .log(listenerEvent.getLog())
-                    .title(event.getTitle())
-                    .warnType(WarningType.GLOBAL.getCode())
-                    .alertType(event.getEventType().getCode())
-                    .build();
-
-            int sendSuccessCount = 0;
-            List<AlertSendStatus> failedPostResults = new ArrayList<>();
-            for (AlertPluginInstance instance : globalAlertInstanceList) {
-                AlertResult alertResult = this.alertResultHandler(instance, alertData);
-                if (alertResult != null) {
-                    AlertStatus sendStatus = Boolean.parseBoolean(alertResult.getStatus())
-                            ? AlertStatus.EXECUTION_SUCCESS
-                            : AlertStatus.EXECUTION_FAILURE;
-                    if (AlertStatus.EXECUTION_SUCCESS.equals(sendStatus)) {
-                        sendSuccessCount++;
-                    } else {
-                        AlertSendStatus alertSendStatus = AlertSendStatus.builder()
-                                .alertId(eventId)
-                                .alertPluginInstanceId(instance.getId())
-                                .sendStatus(sendStatus)
-                                .log(JSONUtils.toJsonString(alertResult))
-                                .createTime(new Date())
-                                .build();
-                        failedPostResults.add(alertSendStatus);
-                    }
-                }
-            }
-            if (sendSuccessCount == globalAlertInstanceList.size()) {
-                listenerEventMapper.deleteById(eventId);
-            } else {
-                AlertStatus alertStatus =
-                        sendSuccessCount == 0 ? AlertStatus.EXECUTION_FAILURE : AlertStatus.EXECUTION_PARTIAL_SUCCESS;
-                listenerEventMapper.updateListenerEvent(eventId, alertStatus, JSONUtils.toJsonString(failedPostResults),
-                        new Date());
-            }
-        }
-    }
-
-    /**
-     * alert result handler
-     *
-     * @param instance  instance
-     * @param alertData alertData
-     * @return AlertResult
-     */
-    private @Nullable AlertResult alertResultHandler(AlertPluginInstance instance, AlertData alertData) {
-        String pluginInstanceName = instance.getInstanceName();
-        int pluginDefineId = instance.getPluginDefineId();
-        Optional<AlertChannel> alertChannelOptional = alertPluginManager.getAlertChannel(instance.getPluginDefineId());
-        if (!alertChannelOptional.isPresent()) {
-            String message =
-                    String.format("Global Alert Plugin %s send error: the channel doesn't exist, pluginDefineId: %s",
-                            pluginInstanceName,
-                            pluginDefineId);
-            log.error("Global Alert Plugin {} send error : not found plugin {}", pluginInstanceName, pluginDefineId);
-            return new AlertResult("false", message);
-        }
-        AlertChannel alertChannel = alertChannelOptional.get();
-
-        Map<String, String> paramsMap = JSONUtils.toMap(instance.getPluginInstanceParams());
-
-        AlertInfo alertInfo = AlertInfo.builder()
-                .alertData(alertData)
-                .alertParams(paramsMap)
-                .alertPluginInstanceId(instance.getId())
-                .build();
-        int waitTimeout = alertConfig.getWaitTimeout();
-        try {
-            AlertResult alertResult;
-            if (waitTimeout <= 0) {
-                if (alertData.getAlertType() == AlertType.CLOSE_ALERT.getCode()) {
-                    alertResult = alertChannel.closeAlert(alertInfo);
-                } else {
-                    alertResult = alertChannel.process(alertInfo);
-                }
-            } else {
-                CompletableFuture<AlertResult> future;
-                if (alertData.getAlertType() == AlertType.CLOSE_ALERT.getCode()) {
-                    future = CompletableFuture.supplyAsync(() -> alertChannel.closeAlert(alertInfo));
-                } else {
-                    future = CompletableFuture.supplyAsync(() -> alertChannel.process(alertInfo));
-                }
-                alertResult = future.get(waitTimeout, TimeUnit.MILLISECONDS);
-            }
-            if (alertResult == null) {
-                throw new RuntimeException("Alert result cannot be null");
-            }
-            return alertResult;
-        } catch (InterruptedException e) {
-            log.error("post listener event error alert data id :{},", alertData.getId(), e);
-            Thread.currentThread().interrupt();
-            return new AlertResult("false", e.getMessage());
-        } catch (Exception e) {
-            log.error("post listener event error alert data id :{},", alertData.getId(), e);
-            return new AlertResult("false", e.getMessage());
-        }
-    }
-
-    private AbstractListenerEvent generateEventFromContent(ListenerEvent listenerEvent) {
-        String content = listenerEvent.getContent();
-        switch (listenerEvent.getEventType()) {
-            case SERVER_DOWN:
-                return JSONUtils.parseObject(content, ServerDownListenerEvent.class);
-            case PROCESS_DEFINITION_CREATED:
-                return JSONUtils.parseObject(content, ProcessDefinitionCreatedListenerEvent.class);
-            case PROCESS_DEFINITION_UPDATED:
-                return JSONUtils.parseObject(content, ProcessDefinitionUpdatedListenerEvent.class);
-            case PROCESS_DEFINITION_DELETED:
-                return JSONUtils.parseObject(content, ProcessDefinitionDeletedListenerEvent.class);
-            case PROCESS_START:
-                return JSONUtils.parseObject(content, ProcessStartListenerEvent.class);
-            case PROCESS_END:
-                return JSONUtils.parseObject(content, ProcessEndListenerEvent.class);
-            case PROCESS_FAIL:
-                return JSONUtils.parseObject(content, ProcessFailListenerEvent.class);
-            case TASK_START:
-                return JSONUtils.parseObject(content, TaskStartListenerEvent.class);
-            case TASK_END:
-                return JSONUtils.parseObject(content, TaskEndListenerEvent.class);
-            case TASK_FAIL:
-                return JSONUtils.parseObject(content, TaskFailListenerEvent.class);
-            default:
-                return null;
-        }
-    }
-    @Override
-    public void close() {
-        log.info("Closed ListenerEventPostService...");
-    }
-}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/java/org/apache/dolphinscheduler/alert/service/ListenerEventSender.java

@@ -0,0 +1,146 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import org.apache.dolphinscheduler.alert.api.AlertData;
+import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
+import org.apache.dolphinscheduler.common.enums.AlertStatus;
+import org.apache.dolphinscheduler.common.utils.JSONUtils;
+import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
+import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.AbstractListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.ProcessDefinitionCreatedListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.ProcessDefinitionDeletedListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.ProcessDefinitionUpdatedListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.ProcessEndListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.ProcessFailListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.ProcessStartListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.ServerDownListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.TaskEndListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.TaskFailListenerEvent;
+import org.apache.dolphinscheduler.dao.entity.event.TaskStartListenerEvent;
+import org.apache.dolphinscheduler.dao.mapper.AlertPluginInstanceMapper;
+import org.apache.dolphinscheduler.dao.repository.ListenerEventDao;
+
+import org.apache.curator.shaded.com.google.common.collect.Lists;
+
+import java.util.Date;
+import java.util.List;
+
+import lombok.extern.slf4j.Slf4j;
+
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Component
+public class ListenerEventSender extends AbstractEventSender<ListenerEvent> {
+
+    private final ListenerEventDao listenerEventDao;
+
+    private final AlertPluginInstanceMapper alertPluginInstanceMapper;
+
+    public ListenerEventSender(ListenerEventDao listenerEventDao,
+                               AlertPluginInstanceMapper alertPluginInstanceMapper,
+                               AlertPluginManager alertPluginManager,
+                               AlertConfig alertConfig) {
+        super(alertPluginManager, alertConfig.getWaitTimeout());
+        this.listenerEventDao = listenerEventDao;
+        this.alertPluginInstanceMapper = alertPluginInstanceMapper;
+    }
+
+    private AbstractListenerEvent generateEventFromContent(ListenerEvent listenerEvent) {
+        String content = listenerEvent.getContent();
+        AbstractListenerEvent event = null;
+        switch (listenerEvent.getEventType()) {
+            case SERVER_DOWN:
+                event = JSONUtils.parseObject(content, ServerDownListenerEvent.class);
+                break;
+            case PROCESS_DEFINITION_CREATED:
+                event = JSONUtils.parseObject(content, ProcessDefinitionCreatedListenerEvent.class);
+                break;
+            case PROCESS_DEFINITION_UPDATED:
+                event = JSONUtils.parseObject(content, ProcessDefinitionUpdatedListenerEvent.class);
+                break;
+            case PROCESS_DEFINITION_DELETED:
+                event = JSONUtils.parseObject(content, ProcessDefinitionDeletedListenerEvent.class);
+                break;
+            case PROCESS_START:
+                event = JSONUtils.parseObject(content, ProcessStartListenerEvent.class);
+                break;
+            case PROCESS_END:
+                event = JSONUtils.parseObject(content, ProcessEndListenerEvent.class);
+                break;
+            case PROCESS_FAIL:
+                event = JSONUtils.parseObject(content, ProcessFailListenerEvent.class);
+                break;
+            case TASK_START:
+                event = JSONUtils.parseObject(content, TaskStartListenerEvent.class);
+                break;
+            case TASK_END:
+                event = JSONUtils.parseObject(content, TaskEndListenerEvent.class);
+                break;
+            case TASK_FAIL:
+                event = JSONUtils.parseObject(content, TaskFailListenerEvent.class);
+                break;
+            default:
+                throw new IllegalArgumentException("Unsupported event type: " + listenerEvent.getEventType());
+        }
+        if (event == null) {
+            throw new IllegalArgumentException("Failed to parse event from content: " + content);
+        }
+        return event;
+    }
+
+    @Override
+    public List<AlertPluginInstance> getAlertPluginInstanceList(ListenerEvent event) {
+        return alertPluginInstanceMapper.queryAllGlobalAlertPluginInstanceList();
+    }
+
+    @Override
+    public AlertData getAlertData(ListenerEvent listenerEvent) {
+        AbstractListenerEvent event = generateEventFromContent(listenerEvent);
+        return AlertData.builder()
+                .id(listenerEvent.getId())
+                .content(JSONUtils.toJsonString(Lists.newArrayList(event)))
+                .log(listenerEvent.getLog())
+                .title(event.getTitle())
+                .alertType(event.getEventType().getCode())
+                .build();
+    }
+
+    @Override
+    public Integer getEventId(ListenerEvent event) {
+        return event.getId();
+    }
+
+    @Override
+    public void onError(ListenerEvent event, String log) {
+        listenerEventDao.updateListenerEvent(event.getId(), AlertStatus.EXECUTION_FAILURE, log, new Date());
+    }
+
+    @Override
+    public void onPartialSuccess(ListenerEvent event, String log) {
+        listenerEventDao.updateListenerEvent(event.getId(), AlertStatus.EXECUTION_PARTIAL_SUCCESS, log, new Date());
+    }
+
+    @Override
+    public void onSuccess(ListenerEvent event, String log) {
+        listenerEventDao.updateListenerEvent(event.getId(), AlertStatus.EXECUTION_FAILURE, log, new Date());
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/main/resources/application.yaml

@@ -73,7 +73,8 @@ alert:
   # Define value is (0 = infinite), and alert server would be waiting alert result.
   wait-timeout: 0
   max-heartbeat-interval: 60s
-  query_alert_threshold: 100
+  # The maximum number of alerts that can be processed in parallel
+  sender-parallelism: 100
 
 registry:
   type: zookeeper

dolphinscheduler-alert/dolphinscheduler-alert-server/src/test/java/org/apache/dolphinscheduler/alert/config/AlertConfigTest.java

@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.config;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import java.time.Duration;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@AutoConfigureMockMvc
+@SpringBootTest(classes = AlertConfig.class)
+class AlertConfigTest {
+
+    @Autowired
+    private AlertConfig alertConfig;
+
+    @Test
+    void testValidate() {
+        assertThat(alertConfig.getWaitTimeout()).isEqualTo(10);
+        assertThat(alertConfig.getMaxHeartbeatInterval()).isEqualTo(Duration.ofSeconds(59));
+        assertThat(alertConfig.getSenderParallelism()).isEqualTo(101);
+    }
+
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/test/java/org/apache/dolphinscheduler/alert/runner/AlertSenderTest.java

@@ -24,15 +24,13 @@ import org.apache.dolphinscheduler.alert.api.AlertChannel;
 import org.apache.dolphinscheduler.alert.api.AlertResult;
 import org.apache.dolphinscheduler.alert.config.AlertConfig;
 import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
-import org.apache.dolphinscheduler.alert.service.AlertBootstrapService;
+import org.apache.dolphinscheduler.alert.service.AlertSender;
 import org.apache.dolphinscheduler.common.enums.WarningType;
 import org.apache.dolphinscheduler.common.utils.JSONUtils;
 import org.apache.dolphinscheduler.dao.AlertDao;
 import org.apache.dolphinscheduler.dao.PluginDao;
 import org.apache.dolphinscheduler.dao.entity.Alert;
 import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
-import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
-import org.apache.dolphinscheduler.dao.entity.PluginDefine;
 import org.apache.dolphinscheduler.extract.alert.request.AlertSendResponse;
 import org.apache.dolphinscheduler.spi.params.PluginParamsTransfer;
 
@@ -42,19 +40,20 @@ import java.util.Map;
 import java.util.Optional;
 
 import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.MockedStatic;
 import org.mockito.Mockito;
-import org.mockito.MockitoAnnotations;
+import org.mockito.junit.jupiter.MockitoExtension;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class AlertBootstrapServiceTest {
+@ExtendWith(MockitoExtension.class)
+class AlertSenderTest {
 
-    private static final Logger logger = LoggerFactory.getLogger(AlertBootstrapServiceTest.class);
+    private static final Logger logger = LoggerFactory.getLogger(AlertSenderTest.class);
 
     @Mock
     private AlertDao alertDao;
@@ -66,7 +65,7 @@ public class AlertBootstrapServiceTest {
     private AlertConfig alertConfig;
 
     @InjectMocks
-    private AlertBootstrapService alertBootstrapService;
+    private AlertSender alertSender;
 
     private static final String PLUGIN_INSTANCE_PARAMS =
             "{\"User\":\"xx\",\"receivers\":\"xx\",\"sender\":\"xx\",\"smtpSslTrust\":\"*\",\"enableSmtpAuth\":\"true\",\"receiverCcs\":null,\"showType\":\"table\",\"starttlsEnable\":\"false\",\"serverPort\":\"25\",\"serverHost\":\"xx\",\"Password\":\"xx\",\"sslEnable\":\"false\"}";
@@ -74,25 +73,17 @@ public class AlertBootstrapServiceTest {
     private static final String PLUGIN_INSTANCE_NAME = "alert-instance-mail";
     private static final String TITLE = "alert mail test TITLE";
     private static final String CONTENT = "alert mail test CONTENT";
-    private static final List<ListenerEvent> EVENTS = new ArrayList<>();
 
     private static final int PLUGIN_DEFINE_ID = 1;
 
     private static final int ALERT_GROUP_ID = 1;
 
-    @BeforeEach
-    public void before() {
-        MockitoAnnotations.initMocks(this);
-    }
-
     @Test
-    public void testSyncHandler() {
+    void testSyncHandler() {
         // 1.alert instance does not exist
         when(alertDao.listInstanceByAlertGroupId(ALERT_GROUP_ID)).thenReturn(null);
-        when(alertConfig.getWaitTimeout()).thenReturn(0);
 
-        AlertSendResponse alertSendResponse =
+        AlertSendResponse alertSendResponse = alertSender.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT);
-                alertBootstrapService.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT, WarningType.ALL.getCode());
         Assertions.assertFalse(alertSendResponse.isSuccess());
         alertSendResponse.getResResults().forEach(result -> logger
                 .info("alert send response result, status:{}, message:{}", result.isSuccess(), result.getMessage()));
@@ -108,12 +99,7 @@ public class AlertBootstrapServiceTest {
         alertInstanceList.add(alertPluginInstance);
         when(alertDao.listInstanceByAlertGroupId(1)).thenReturn(alertInstanceList);
 
-        String pluginName = "alert-plugin-mail";
+        alertSendResponse = alertSender.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT);
-        PluginDefine pluginDefine = new PluginDefine(pluginName, "1", null);
-        when(pluginDao.getPluginDefineById(pluginDefineId)).thenReturn(pluginDefine);
-
-        alertSendResponse =
-                alertBootstrapService.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT, WarningType.ALL.getCode());
         Assertions.assertFalse(alertSendResponse.isSuccess());
         alertSendResponse.getResResults().forEach(result -> logger
                 .info("alert send response result, status:{}, message:{}", result.isSuccess(), result.getMessage()));
@@ -122,37 +108,32 @@ public class AlertBootstrapServiceTest {
         AlertChannel alertChannelMock = mock(AlertChannel.class);
         when(alertChannelMock.process(Mockito.any())).thenReturn(null);
         when(alertPluginManager.getAlertChannel(1)).thenReturn(Optional.of(alertChannelMock));
-        when(alertConfig.getWaitTimeout()).thenReturn(0);
 
-        alertSendResponse =
+        alertSendResponse = alertSender.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT);
-                alertBootstrapService.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT, WarningType.ALL.getCode());
         Assertions.assertFalse(alertSendResponse.isSuccess());
         alertSendResponse.getResResults().forEach(result -> logger
                 .info("alert send response result, status:{}, message:{}", result.isSuccess(), result.getMessage()));
 
         // 4.abnormal information inside the alert plug-in code
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus(String.valueOf(false));
+        alertResult.setSuccess(false);
         alertResult.setMessage("Abnormal information inside the alert plug-in code");
         when(alertChannelMock.process(Mockito.any())).thenReturn(alertResult);
         when(alertPluginManager.getAlertChannel(1)).thenReturn(Optional.of(alertChannelMock));
 
-        alertSendResponse =
+        alertSendResponse = alertSender.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT);
-                alertBootstrapService.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT, WarningType.ALL.getCode());
         Assertions.assertFalse(alertSendResponse.isSuccess());
         alertSendResponse.getResResults().forEach(result -> logger
                 .info("alert send response result, status:{}, message:{}", result.isSuccess(), result.getMessage()));
 
         // 5.alert plugin send success
         alertResult = new AlertResult();
-        alertResult.setStatus(String.valueOf(true));
+        alertResult.setSuccess(true);
         alertResult.setMessage(String.format("Alert Plugin %s send success", pluginInstanceName));
         when(alertChannelMock.process(Mockito.any())).thenReturn(alertResult);
         when(alertPluginManager.getAlertChannel(1)).thenReturn(Optional.of(alertChannelMock));
-        when(alertConfig.getWaitTimeout()).thenReturn(5000);
 
-        alertSendResponse =
+        alertSendResponse = alertSender.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT);
-                alertBootstrapService.syncHandler(ALERT_GROUP_ID, TITLE, CONTENT, WarningType.ALL.getCode());
         Assertions.assertTrue(alertSendResponse.isSuccess());
         alertSendResponse.getResResults().forEach(result -> logger
                 .info("alert send response result, status:{}, message:{}", result.isSuccess(), result.getMessage()));
@@ -160,17 +141,13 @@ public class AlertBootstrapServiceTest {
     }
 
     @Test
-    public void testRun() {
+    void testRun() {
-        List<Alert> alertList = new ArrayList<>();
         Alert alert = new Alert();
         alert.setId(1);
         alert.setAlertGroupId(ALERT_GROUP_ID);
         alert.setTitle(TITLE);
         alert.setContent(CONTENT);
         alert.setWarningType(WarningType.FAILURE);
-        alertList.add(alert);
-
-        // alertSenderService = new AlertSenderService();
 
         int pluginDefineId = 1;
         String pluginInstanceParams = "alert-instance-mail-params";
@@ -181,25 +158,18 @@ public class AlertBootstrapServiceTest {
         alertInstanceList.add(alertPluginInstance);
         when(alertDao.listInstanceByAlertGroupId(ALERT_GROUP_ID)).thenReturn(alertInstanceList);
 
-        String pluginName = "alert-plugin-mail";
-        PluginDefine pluginDefine = new PluginDefine(pluginName, "1", null);
-        when(pluginDao.getPluginDefineById(pluginDefineId)).thenReturn(pluginDefine);
-
         AlertResult alertResult = new AlertResult();
-        alertResult.setStatus(String.valueOf(true));
+        alertResult.setSuccess(true);
         alertResult.setMessage(String.format("Alert Plugin %s send success", pluginInstanceName));
-        AlertChannel alertChannelMock = mock(AlertChannel.class);
+        Assertions.assertTrue(alertResult.isSuccess());
-        when(alertChannelMock.process(Mockito.any())).thenReturn(alertResult);
-        when(alertPluginManager.getAlertChannel(1)).thenReturn(Optional.of(alertChannelMock));
-        Assertions.assertTrue(Boolean.parseBoolean(alertResult.getStatus()));
         when(alertDao.listInstanceByAlertGroupId(1)).thenReturn(new ArrayList<>());
-        alertBootstrapService.send(alertList);
+        alertSender.sendEvent(alert);
     }
 
     @Test
-    public void testSendAlert() {
+    void testSendAlert() {
         AlertResult sendResult = new AlertResult();
-        sendResult.setStatus(String.valueOf(true));
+        sendResult.setSuccess(true);
         sendResult.setMessage(String.format("Alert Plugin %s send success", PLUGIN_INSTANCE_NAME));
         AlertChannel alertChannelMock = mock(AlertChannel.class);
         when(alertChannelMock.process(Mockito.any())).thenReturn(sendResult);
@@ -209,6 +179,6 @@ public class AlertBootstrapServiceTest {
                 Mockito.mockStatic(PluginParamsTransfer.class);
         pluginParamsTransferMockedStatic.when(() -> PluginParamsTransfer.getPluginParamsMap(PLUGIN_INSTANCE_PARAMS))
                 .thenReturn(paramsMap);
-        alertBootstrapService.syncTestSend(PLUGIN_DEFINE_ID, PLUGIN_INSTANCE_PARAMS);
+        alertSender.syncTestSend(PLUGIN_DEFINE_ID, PLUGIN_INSTANCE_PARAMS);
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-server/src/test/java/org/apache/dolphinscheduler/alert/runner/ListenerEventSenderTest.java

@@ -24,7 +24,7 @@ import org.apache.dolphinscheduler.alert.api.AlertChannel;
 import org.apache.dolphinscheduler.alert.api.AlertResult;
 import org.apache.dolphinscheduler.alert.config.AlertConfig;
 import org.apache.dolphinscheduler.alert.plugin.AlertPluginManager;
-import org.apache.dolphinscheduler.alert.service.ListenerEventPostService;
+import org.apache.dolphinscheduler.alert.service.ListenerEventSender;
 import org.apache.dolphinscheduler.common.enums.AlertPluginInstanceType;
 import org.apache.dolphinscheduler.common.enums.AlertStatus;
 import org.apache.dolphinscheduler.common.enums.ListenerEventType;
@@ -33,7 +33,7 @@ import org.apache.dolphinscheduler.dao.entity.AlertPluginInstance;
 import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
 import org.apache.dolphinscheduler.dao.entity.event.ServerDownListenerEvent;
 import org.apache.dolphinscheduler.dao.mapper.AlertPluginInstanceMapper;
-import org.apache.dolphinscheduler.dao.mapper.ListenerEventMapper;
+import org.apache.dolphinscheduler.dao.repository.ListenerEventDao;
 
 import org.apache.commons.codec.digest.DigestUtils;
 
@@ -43,39 +43,32 @@ import java.util.List;
 import java.util.Optional;
 
 import org.junit.jupiter.api.Assertions;
-import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.Mockito;
-import org.mockito.MockitoAnnotations;
+import org.mockito.junit.jupiter.MockitoExtension;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
-public class ListenerEventPostServiceTest {
+@ExtendWith(MockitoExtension.class)
-
+class ListenerEventSenderTest {
-    private static final Logger logger = LoggerFactory.getLogger(ListenerEventPostServiceTest.class);
 
     @Mock
-    private ListenerEventMapper listenerEventMapper;
+    private ListenerEventDao listenerEventDao;
+
     @Mock
     private AlertPluginInstanceMapper alertPluginInstanceMapper;
     @Mock
     private AlertPluginManager alertPluginManager;
+
     @Mock
     private AlertConfig alertConfig;
 
     @InjectMocks
-    private ListenerEventPostService listenerEventPostService;
+    private ListenerEventSender listenerEventSender;
-
-    @BeforeEach
-    public void before() {
-        MockitoAnnotations.initMocks(this);
-    }
 
     @Test
-    public void testSendServerDownEventSuccess() {
+    void testSendServerDownEventSuccess() {
-        List<ListenerEvent> events = new ArrayList<>();
         ServerDownListenerEvent serverDownListenerEvent = new ServerDownListenerEvent();
         serverDownListenerEvent.setEventTime(new Date());
         serverDownListenerEvent.setType("WORKER");
@@ -88,7 +81,6 @@ public class ListenerEventPostServiceTest {
         successEvent.setEventType(ListenerEventType.SERVER_DOWN);
         successEvent.setCreateTime(new Date());
         successEvent.setUpdateTime(new Date());
-        events.add(successEvent);
 
         int pluginDefineId = 1;
         String pluginInstanceParams =
@@ -103,19 +95,17 @@ public class ListenerEventPostServiceTest {
         when(alertPluginInstanceMapper.queryAllGlobalAlertPluginInstanceList()).thenReturn(alertInstanceList);
 
         AlertResult sendResult = new AlertResult();
-        sendResult.setStatus(String.valueOf(true));
+        sendResult.setSuccess(true);
         sendResult.setMessage(String.format("Alert Plugin %s send success", pluginInstanceName));
         AlertChannel alertChannelMock = mock(AlertChannel.class);
         when(alertChannelMock.process(Mockito.any())).thenReturn(sendResult);
         when(alertPluginManager.getAlertChannel(1)).thenReturn(Optional.of(alertChannelMock));
-        Assertions.assertTrue(Boolean.parseBoolean(sendResult.getStatus()));
+        Assertions.assertTrue(sendResult.isSuccess());
-        when(listenerEventMapper.deleteById(1)).thenReturn(1);
+        listenerEventSender.sendEvent(successEvent);
-        listenerEventPostService.send(events);
     }
 
     @Test
-    public void testSendServerDownEventFailed() {
+    void testSendServerDownEventFailed() {
-        List<ListenerEvent> events = new ArrayList<>();
         ServerDownListenerEvent serverDownListenerEvent = new ServerDownListenerEvent();
         serverDownListenerEvent.setEventTime(new Date());
         serverDownListenerEvent.setType("WORKER");
@@ -128,7 +118,6 @@ public class ListenerEventPostServiceTest {
         successEvent.setEventType(ListenerEventType.SERVER_DOWN);
         successEvent.setCreateTime(new Date());
         successEvent.setUpdateTime(new Date());
-        events.add(successEvent);
 
         int pluginDefineId = 1;
         String pluginInstanceParams =
@@ -143,12 +132,12 @@ public class ListenerEventPostServiceTest {
         when(alertPluginInstanceMapper.queryAllGlobalAlertPluginInstanceList()).thenReturn(alertInstanceList);
 
         AlertResult sendResult = new AlertResult();
-        sendResult.setStatus(String.valueOf(false));
+        sendResult.setSuccess(false);
         sendResult.setMessage(String.format("Alert Plugin %s send failed", pluginInstanceName));
         AlertChannel alertChannelMock = mock(AlertChannel.class);
         when(alertChannelMock.process(Mockito.any())).thenReturn(sendResult);
         when(alertPluginManager.getAlertChannel(1)).thenReturn(Optional.of(alertChannelMock));
-        Assertions.assertFalse(Boolean.parseBoolean(sendResult.getStatus()));
+        Assertions.assertFalse(sendResult.isSuccess());
-        listenerEventPostService.send(events);
+        listenerEventSender.sendEvent(successEvent);
     }
 }

dolphinscheduler-alert/dolphinscheduler-alert-server/src/test/java/org/apache/dolphinscheduler/alert/service/AlertEventPendingQueueTest.java

@@ -0,0 +1,94 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.awaitility.Awaitility.await;
+import static org.junit.jupiter.api.Assertions.assertThrowsExactly;
+
+import org.apache.dolphinscheduler.alert.config.AlertConfig;
+import org.apache.dolphinscheduler.dao.entity.Alert;
+
+import java.time.Duration;
+import java.util.concurrent.CompletableFuture;
+
+import lombok.SneakyThrows;
+
+import org.awaitility.core.ConditionTimeoutException;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+class AlertEventPendingQueueTest {
+
+    private AlertEventPendingQueue alertEventPendingQueue;
+
+    private static final int QUEUE_SIZE = 10;
+
+    @BeforeEach
+    public void before() {
+        AlertConfig alertConfig = new AlertConfig();
+        alertConfig.setSenderParallelism(QUEUE_SIZE);
+        this.alertEventPendingQueue = new AlertEventPendingQueue(alertConfig);
+    }
+
+    @SneakyThrows
+    @Test
+    void put() {
+        for (int i = 0; i < alertEventPendingQueue.capacity(); i++) {
+            alertEventPendingQueue.put(new Alert());
+        }
+
+        CompletableFuture<Void> completableFuture = CompletableFuture.runAsync(() -> {
+            try {
+                alertEventPendingQueue.put(new Alert());
+                System.out.println(alertEventPendingQueue.size());
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            }
+        });
+        assertThrowsExactly(ConditionTimeoutException.class,
+                () -> await()
+                        .timeout(Duration.ofSeconds(2))
+                        .until(completableFuture::isDone));
+
+    }
+
+    @Test
+    void take() {
+        CompletableFuture<Void> completableFuture = CompletableFuture.runAsync(() -> {
+            try {
+                alertEventPendingQueue.take();
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            }
+        });
+        assertThrowsExactly(ConditionTimeoutException.class,
+                () -> await()
+                        .timeout(Duration.ofSeconds(2))
+                        .until(completableFuture::isDone));
+    }
+
+    @SneakyThrows
+    @Test
+    void size() {
+        for (int i = 0; i < alertEventPendingQueue.capacity(); i++) {
+            alertEventPendingQueue.put(new Alert());
+            assertThat(alertEventPendingQueue.size()).isEqualTo(i + 1);
+        }
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/test/java/org/apache/dolphinscheduler/alert/service/AlertSenderThreadPoolFactoryTest.java

@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.alert.service;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.apache.dolphinscheduler.alert.config.AlertConfig;
+
+import java.util.concurrent.ThreadPoolExecutor;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+@ExtendWith(MockitoExtension.class)
+class AlertSenderThreadPoolFactoryTest {
+
+    private final AlertConfig alertConfig = new AlertConfig();
+
+    private final AlertSenderThreadPoolFactory alertSenderThreadPoolFactory =
+            new AlertSenderThreadPoolFactory(alertConfig);
+
+    @Test
+    void getThreadPool() {
+        ThreadPoolExecutor threadPool = alertSenderThreadPoolFactory.getThreadPool();
+        assertThat(threadPool.getCorePoolSize()).isEqualTo(alertConfig.getSenderParallelism());
+        assertThat(threadPool.getMaximumPoolSize()).isEqualTo(alertConfig.getSenderParallelism());
+    }
+}

dolphinscheduler-alert/dolphinscheduler-alert-server/src/test/resources/application.yaml

@@ -0,0 +1,107 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+spring:
+  profiles:
+    active: postgresql
+  jackson:
+    time-zone: UTC
+    date-format: "yyyy-MM-dd HH:mm:ss"
+  banner:
+    charset: UTF-8
+  datasource:
+    driver-class-name: org.postgresql.Driver
+    url: jdbc:postgresql://127.0.0.1:5432/dolphinscheduler
+    username: root
+    password: root
+    hikari:
+      connection-test-query: select 1
+      pool-name: DolphinScheduler
+
+# Mybatis-plus configuration, you don't need to change it
+mybatis-plus:
+  mapper-locations: classpath:org/apache/dolphinscheduler/dao/mapper/*Mapper.xml
+  type-aliases-package: org.apache.dolphinscheduler.dao.entity
+  configuration:
+    cache-enabled: false
+    call-setters-on-nulls: true
+    map-underscore-to-camel-case: true
+    jdbc-type-for-null: NULL
+  global-config:
+    db-config:
+      id-type: auto
+    banner: false
+
+server:
+  port: 50053
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: health,metrics,prometheus
+  endpoint:
+    health:
+      enabled: true
+      show-details: always
+  health:
+    db:
+      enabled: true
+    defaults:
+      enabled: false
+  metrics:
+    tags:
+      application: ${spring.application.name}
+
+alert:
+  port: 50052
+  # Mark each alert of alert server if late after x milliseconds as failed.
+  # Define value is (0 = infinite), and alert server would be waiting alert result.
+  wait-timeout: 10
+  max-heartbeat-interval: 59s
+  # The maximum number of alerts that can be processed in parallel
+  sender-parallelism: 101
+
+registry:
+  type: zookeeper
+  zookeeper:
+    namespace: dolphinscheduler
+    connect-string: localhost:2181
+    retry-policy:
+      base-sleep-time: 60ms
+      max-sleep: 300ms
+      max-retries: 5
+    session-timeout: 30s
+    connection-timeout: 9s
+    block-until-connected: 600ms
+    digest: ~
+
+metrics:
+  enabled: true
+
+# Override by profile
+
+---
+spring:
+  config:
+    activate:
+      on-profile: mysql
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://127.0.0.1:3306/dolphinscheduler
+    username: root
+    password: root

dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/enums/ServerStatus.java

@@ -20,6 +20,6 @@ package org.apache.dolphinscheduler.common.enums;
 public enum ServerStatus {
 
     NORMAL,
-    BUSY
+    BUSY,
 
 }

dolphinscheduler-common/src/main/java/org/apache/dolphinscheduler/common/model/AlertServerHeartBeat.java

@@ -24,4 +24,9 @@ import lombok.experimental.SuperBuilder;
 @NoArgsConstructor
 public class AlertServerHeartBeat extends BaseHeartBeat implements HeartBeat {
 
+    /**
+     * If the alert server is active or standby
+     */
+    private boolean isActive;
+
 }

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/AlertDao.java

@@ -63,8 +63,7 @@ import com.google.common.collect.Lists;
 @Slf4j
 public class AlertDao {
 
-    @Value("${alert.query_alert_threshold:100}")
+    private static final Integer QUERY_ALERT_THRESHOLD = 100;
-    private Integer QUERY_ALERT_THRESHOLD;
 
     @Value("${alert.alarm-suppression.crash:60}")
     private Integer crashAlarmSuppression;
@@ -271,10 +270,11 @@ public class AlertDao {
     }
 
     /**
-     * List alerts that are pending for execution
+     * List pending alerts which id > minAlertId and status = {@link AlertStatus#WAIT_EXECUTION} order by id asc.
      */
-    public List<Alert> listPendingAlerts() {
+    public List<Alert> listPendingAlerts(int minAlertId) {
-        return alertMapper.listingAlertByStatus(AlertStatus.WAIT_EXECUTION.getCode(), QUERY_ALERT_THRESHOLD);
+        return alertMapper.listingAlertByStatus(minAlertId, AlertStatus.WAIT_EXECUTION.getCode(),
+                QUERY_ALERT_THRESHOLD);
     }
 
     public List<Alert> listAlerts(int processInstanceId) {
@@ -283,15 +283,6 @@ public class AlertDao {
         return alertMapper.selectList(wrapper);
     }
 
-    /**
-     * for test
-     *
-     * @return AlertMapper
-     */
-    public AlertMapper getAlertMapper() {
-        return alertMapper;
-    }
-
     /**
      * list all alert plugin instance by alert group id
      *

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/mapper/AlertMapper.java

@@ -34,9 +34,10 @@ import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 public interface AlertMapper extends BaseMapper<Alert> {
 
     /**
-     * Query the alert by alertStatus and return limit with default sort.
+     * Query the alert which id > minAlertId and status = alertStatus order by id asc.
      */
-    List<Alert> listingAlertByStatus(@Param("alertStatus") int alertStatus, @Param("limit") int limit);
+    List<Alert> listingAlertByStatus(@Param("minAlertId") int minAlertId, @Param("alertStatus") int alertStatus,
+                                     @Param("limit") int limit);
 
     /**
      * Insert server crash alert

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/mapper/ListenerEventMapper.java

@@ -34,7 +34,8 @@ public interface ListenerEventMapper extends BaseMapper<ListenerEvent> {
     void insertServerDownEvent(@Param("event") ListenerEvent event,
                                @Param("crashAlarmSuppressionStartTime") Date crashAlarmSuppressionStartTime);
 
-    List<ListenerEvent> listingListenerEventByStatus(@Param("postStatus") AlertStatus postStatus,
+    List<ListenerEvent> listingListenerEventByStatus(@Param("minId") int minId,
+                                                     @Param("postStatus") int postStatus,
                                                      @Param("limit") int limit);
 
     void updateListenerEvent(@Param("eventId") int eventId, @Param("postStatus") AlertStatus postStatus,

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/repository/ListenerEventDao.java

@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.dao.repository;
+
+import org.apache.dolphinscheduler.common.enums.AlertStatus;
+import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
+
+import java.util.Date;
+import java.util.List;
+
+public interface ListenerEventDao extends IDao<ListenerEvent> {
+
+    List<ListenerEvent> listingPendingEvents(int minId, int limit);
+
+    void updateListenerEvent(int eventId, AlertStatus alertStatus, String message, Date date);
+}

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/repository/impl/ListenerEventDaoImpl.java

@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.dao.repository.impl;
+
+import org.apache.dolphinscheduler.common.enums.AlertStatus;
+import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
+import org.apache.dolphinscheduler.dao.mapper.ListenerEventMapper;
+import org.apache.dolphinscheduler.dao.repository.BaseDao;
+import org.apache.dolphinscheduler.dao.repository.ListenerEventDao;
+
+import java.util.Date;
+import java.util.List;
+
+import lombok.NonNull;
+import lombok.extern.slf4j.Slf4j;
+
+import org.springframework.stereotype.Repository;
+
+@Slf4j
+@Repository
+public class ListenerEventDaoImpl extends BaseDao<ListenerEvent, ListenerEventMapper> implements ListenerEventDao {
+
+    public ListenerEventDaoImpl(@NonNull ListenerEventMapper listenerEventMapper) {
+        super(listenerEventMapper);
+    }
+
+    @Override
+    public List<ListenerEvent> listingPendingEvents(int minId, int limit) {
+        return mybatisMapper.listingListenerEventByStatus(minId, AlertStatus.WAIT_EXECUTION.getCode(), limit);
+    }
+
+    @Override
+    public void updateListenerEvent(int eventId, AlertStatus alertStatus, String message, Date date) {
+        mybatisMapper.updateListenerEvent(eventId, alertStatus, message, date);
+    }
+}

dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/AlertMapper.xml

@@ -55,7 +55,9 @@
         select
         <include refid="baseSql"/>
         from t_ds_alert
-        where alert_status = #{alertStatus}
+        where id > #{minAlertId}
+        and alert_status = #{alertStatus}
+        order by id asc
         limit #{limit}
     </select>
 

dolphinscheduler-dao/src/main/resources/org/apache/dolphinscheduler/dao/mapper/ListenerEventMapper.xml

@@ -60,7 +60,8 @@
         select
         <include refid="baseSql"/>
         from t_ds_listener_event
-        where post_status = #{postStatus.code}
+        where id > #{minId} and post_status = #{postStatus}
+        order by id asc
         limit #{limit}
     </select>
 </mapper>

dolphinscheduler-dao/src/test/java/org/apache/dolphinscheduler/dao/mapper/ListenerEventMapperTest.java

@@ -81,7 +81,7 @@ public class ListenerEventMapperTest extends BaseDaoTest {
         ListenerEvent event2 = generateServerDownListenerEvent("192.168.x.2");
         listenerEventMapper.batchInsert(Lists.newArrayList(event1, event2));
         List<ListenerEvent> listenerEvents =
-                listenerEventMapper.listingListenerEventByStatus(AlertStatus.WAIT_EXECUTION, 50);
+                listenerEventMapper.listingListenerEventByStatus(-1, AlertStatus.WAIT_EXECUTION.getCode(), 50);
         Assertions.assertEquals(listenerEvents.size(), 2);
     }
 
@@ -111,8 +111,10 @@ public class ListenerEventMapperTest extends BaseDaoTest {
         ListenerEvent actualAlert = listenerEventMapper.selectById(event.getId());
         Assertions.assertNull(actualAlert);
     }
+
     /**
      * create server down event
+     *
      * @param host worker host
      * @return listener event
      */

dolphinscheduler-dao/src/test/java/org/apache/dolphinscheduler/dao/repository/impl/AlertDaoTest.java

@@ -18,37 +18,23 @@
 package org.apache.dolphinscheduler.dao.repository.impl;
 
 import org.apache.dolphinscheduler.common.enums.AlertStatus;
-import org.apache.dolphinscheduler.common.enums.ProfileType;
 import org.apache.dolphinscheduler.dao.AlertDao;
-import org.apache.dolphinscheduler.dao.DaoConfiguration;
+import org.apache.dolphinscheduler.dao.BaseDaoTest;
 import org.apache.dolphinscheduler.dao.entity.Alert;
 
 import java.util.List;
 
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.extension.ExtendWith;
-import org.mockito.junit.jupiter.MockitoExtension;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.annotation.Rollback;
-import org.springframework.test.context.ActiveProfiles;
-import org.springframework.transaction.annotation.Transactional;
 
-@ActiveProfiles(ProfileType.H2)
+class AlertDaoTest extends BaseDaoTest {
-@ExtendWith(MockitoExtension.class)
-@SpringBootApplication(scanBasePackageClasses = DaoConfiguration.class)
-@SpringBootTest(classes = DaoConfiguration.class)
-@Transactional
-@Rollback
-public class AlertDaoTest {
 
     @Autowired
     private AlertDao alertDao;
 
     @Test
-    public void testAlertDao() {
+    void testAlertDao() {
         Alert alert = new Alert();
         alert.setTitle("Mysql Exception");
         alert.setContent("[\"alarm time：2018-02-05\", \"service name：MYSQL_ALTER\", \"alarm name：MYSQL_ALTER_DUMP\", "
@@ -57,25 +43,25 @@ public class AlertDaoTest {
         alert.setAlertStatus(AlertStatus.WAIT_EXECUTION);
         alertDao.addAlert(alert);
 
-        List<Alert> alerts = alertDao.listPendingAlerts();
+        List<Alert> alerts = alertDao.listPendingAlerts(-1);
         Assertions.assertNotNull(alerts);
         Assertions.assertNotEquals(0, alerts.size());
     }
 
     @Test
-    public void testAddAlertSendStatus() {
+    void testAddAlertSendStatus() {
         int insertCount = alertDao.addAlertSendStatus(AlertStatus.EXECUTION_SUCCESS, "success", 1, 1);
         Assertions.assertEquals(1, insertCount);
     }
 
     @Test
-    public void testSendServerStoppedAlert() {
+    void testSendServerStoppedAlert() {
         int alertGroupId = 1;
         String host = "127.0.0.998165432";
         String serverType = "Master";
         alertDao.sendServerStoppedAlert(alertGroupId, host, serverType);
         alertDao.sendServerStoppedAlert(alertGroupId, host, serverType);
-        long count = alertDao.listPendingAlerts()
+        long count = alertDao.listPendingAlerts(-1)
                 .stream()
                 .filter(alert -> alert.getContent().contains(host))
                 .count();

dolphinscheduler-dao/src/test/java/org/apache/dolphinscheduler/dao/repository/impl/ListenerEventDaoImplTest.java

@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.dao.repository.impl;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import org.apache.dolphinscheduler.common.enums.AlertStatus;
+import org.apache.dolphinscheduler.common.enums.ListenerEventType;
+import org.apache.dolphinscheduler.dao.BaseDaoTest;
+import org.apache.dolphinscheduler.dao.entity.ListenerEvent;
+import org.apache.dolphinscheduler.dao.repository.ListenerEventDao;
+
+import java.util.Date;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+
+class ListenerEventDaoImplTest extends BaseDaoTest {
+
+    @Autowired
+    private ListenerEventDao listenerEventDao;
+
+    @Test
+    void listingPendingEvents() {
+        int minId = -1;
+        int limit = 10;
+        assertThat(listenerEventDao.listingPendingEvents(minId, limit)).isEmpty();
+
+        ListenerEvent listenerEvent = ListenerEvent.builder()
+                .eventType(ListenerEventType.SERVER_DOWN)
+                .sign("test")
+                .createTime(new Date())
+                .updateTime(new Date())
+                .postStatus(AlertStatus.WAIT_EXECUTION)
+                .build();
+        listenerEventDao.insert(listenerEvent);
+
+        listenerEvent = ListenerEvent.builder()
+                .eventType(ListenerEventType.SERVER_DOWN)
+                .sign("test")
+                .createTime(new Date())
+                .updateTime(new Date())
+                .postStatus(AlertStatus.EXECUTION_SUCCESS)
+                .build();
+        listenerEventDao.insert(listenerEvent);
+
+        assertThat(listenerEventDao.listingPendingEvents(minId, limit)).hasSize(1);
+    }
+
+    @Test
+    void updateListenerEvent() {
+        ListenerEvent listenerEvent = ListenerEvent.builder()
+                .eventType(ListenerEventType.SERVER_DOWN)
+                .sign("test")
+                .createTime(new Date())
+                .updateTime(new Date())
+                .postStatus(AlertStatus.WAIT_EXECUTION)
+                .build();
+        listenerEventDao.insert(listenerEvent);
+        listenerEventDao.updateListenerEvent(listenerEvent.getId(), AlertStatus.EXECUTION_SUCCESS, "test", new Date());
+        assertThat(listenerEventDao.queryById(listenerEvent.getId()).getPostStatus())
+                .isEqualTo(AlertStatus.EXECUTION_SUCCESS);
+    }
+}

dolphinscheduler-extract/dolphinscheduler-extract-alert/src/main/java/org/apache/dolphinscheduler/extract/alert/request/AlertSendResponse.java

@@ -37,6 +37,14 @@ public class AlertSendResponse {
 
     private List<AlertSendResponseResult> resResults;
 
+    public static AlertSendResponse success(List<AlertSendResponseResult> resResults) {
+        return new AlertSendResponse(true, resResults);
+    }
+
+    public static AlertSendResponse fail(List<AlertSendResponseResult> resResults) {
+        return new AlertSendResponse(false, resResults);
+    }
+
     @Data
     @NoArgsConstructor
     @AllArgsConstructor
@@ -46,6 +54,14 @@ public class AlertSendResponse {
 
         private String message;
 
+        public static AlertSendResponseResult success() {
+            return new AlertSendResponseResult(true, null);
+        }
+
+        public static AlertSendResponseResult fail(String message) {
+            return new AlertSendResponseResult(false, message);
+        }
+
     }
 
 }

dolphinscheduler-registry/dolphinscheduler-registry-api/src/main/java/org/apache/dolphinscheduler/registry/api/Registry.java

@@ -58,7 +58,6 @@ public interface Registry extends Closeable {
     String get(String key);
 
     /**
-     *
      * @param key
      * @param value
      * @param deleteOnDisconnect if true, when the connection state is disconnected, the key will be deleted
@@ -67,6 +66,7 @@ public interface Registry extends Closeable {
 
     /**
      * This function will delete the keys whose prefix is {@param key}
+     *
      * @param key the prefix of deleted key
      * @throws if the key not exists, there is a registryException
      */
@@ -90,6 +90,11 @@ public interface Registry extends Closeable {
      */
     boolean acquireLock(String key);
 
+    /**
+     * Acquire the lock of the prefix {@param key}, if acquire in the given timeout return true, else return false.
+     */
+    boolean acquireLock(String key, long timeout);
+
     /**
      * Release the lock of the prefix {@param key}
      */

dolphinscheduler-registry/dolphinscheduler-registry-api/src/main/java/org/apache/dolphinscheduler/registry/api/ha/AbstractHAServer.java

@@ -0,0 +1,105 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.registry.api.ha;
+
+import org.apache.dolphinscheduler.common.thread.ThreadUtils;
+import org.apache.dolphinscheduler.registry.api.Event;
+import org.apache.dolphinscheduler.registry.api.Registry;
+
+import java.util.List;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.TimeUnit;
+
+import lombok.extern.slf4j.Slf4j;
+
+import com.google.common.collect.Lists;
+
+@Slf4j
+public abstract class AbstractHAServer implements HAServer {
+
+    private final Registry registry;
+
+    private final String serverPath;
+
+    private ServerStatus serverStatus;
+
+    private final List<ServerStatusChangeListener> serverStatusChangeListeners;
+
+    public AbstractHAServer(Registry registry, String serverPath) {
+        this.registry = registry;
+        this.serverPath = serverPath;
+        this.serverStatus = ServerStatus.STAND_BY;
+        this.serverStatusChangeListeners = Lists.newArrayList(new DefaultServerStatusChangeListener());
+    }
+
+    @Override
+    public void start() {
+        registry.subscribe(serverPath, event -> {
+            if (Event.Type.REMOVE.equals(event.type())) {
+                if (isActive() && !participateElection()) {
+                    statusChange(ServerStatus.STAND_BY);
+                }
+            }
+        });
+        ScheduledExecutorService electionSelectionThread =
+                ThreadUtils.newSingleDaemonScheduledExecutorService("election-selection-thread");
+        electionSelectionThread.schedule(() -> {
+            if (isActive()) {
+                return;
+            }
+            if (participateElection()) {
+                statusChange(ServerStatus.ACTIVE);
+            }
+        }, 10, TimeUnit.SECONDS);
+    }
+
+    @Override
+    public boolean isActive() {
+        return ServerStatus.ACTIVE.equals(getServerStatus());
+    }
+
+    @Override
+    public boolean participateElection() {
+        return registry.acquireLock(serverPath, 3_000);
+    }
+
+    @Override
+    public void addServerStatusChangeListener(ServerStatusChangeListener listener) {
+        serverStatusChangeListeners.add(listener);
+    }
+
+    @Override
+    public ServerStatus getServerStatus() {
+        return serverStatus;
+    }
+
+    @Override
+    public void shutdown() {
+        if (isActive()) {
+            registry.releaseLock(serverPath);
+        }
+    }
+
+    private void statusChange(ServerStatus targetStatus) {
+        synchronized (this) {
+            ServerStatus originStatus = serverStatus;
+            serverStatus = targetStatus;
+            serverStatusChangeListeners.forEach(listener -> listener.change(originStatus, serverStatus));
+        }
+    }
+}

dolphinscheduler-registry/dolphinscheduler-registry-api/src/main/java/org/apache/dolphinscheduler/registry/api/ha/AbstractServerStatusChangeListener.java

@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.registry.api.ha;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public abstract class AbstractServerStatusChangeListener implements ServerStatusChangeListener {
+
+    @Override
+    public void change(HAServer.ServerStatus originStatus, HAServer.ServerStatus currentStatus) {
+        log.info("The status change from {} to {}.", originStatus, currentStatus);
+        if (originStatus == HAServer.ServerStatus.ACTIVE) {
+            if (currentStatus == HAServer.ServerStatus.STAND_BY) {
+                changeToStandBy();
+            }
+        } else if (originStatus == HAServer.ServerStatus.STAND_BY) {
+            if (currentStatus == HAServer.ServerStatus.ACTIVE) {
+                changeToActive();
+            }
+        }
+    }
+
+    public abstract void changeToActive();
+
+    public abstract void changeToStandBy();
+}

dolphinscheduler-registry/dolphinscheduler-registry-api/src/main/java/org/apache/dolphinscheduler/registry/api/ha/DefaultServerStatusChangeListener.java

@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.registry.api.ha;
+
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class DefaultServerStatusChangeListener extends AbstractServerStatusChangeListener {
+
+    @Override
+    public void changeToActive() {
+        log.info("The status is active now.");
+    }
+
+    @Override
+    public void changeToStandBy() {
+        log.info("The status is standby now.");
+    }
+}

dolphinscheduler-registry/dolphinscheduler-registry-api/src/main/java/org/apache/dolphinscheduler/registry/api/ha/HAServer.java

@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.registry.api.ha;
+
+/**
+ * Interface for HA server, used to select a active server from multiple servers.
+ * In HA mode, there are multiple servers, only one server is active, others are standby.
+ */
+public interface HAServer {
+
+    /**
+     * Start the server.
+     */
+    void start();
+
+    /**
+     * Judge whether the server is active.
+     *
+     * @return true if the current server is active.
+     */
+    boolean isActive();
+
+    /**
+     * Participate in the election of active server, this method will block until the server is active.
+     */
+    boolean participateElection();
+
+    /**
+     * Add a listener to listen to the status change of the server.
+     *
+     * @param listener listener to add.
+     */
+    void addServerStatusChangeListener(ServerStatusChangeListener listener);
+
+    /**
+     * Get the status of the server.
+     *
+     * @return the status of the server.
+     */
+    ServerStatus getServerStatus();
+
+    /**
+     * Shutdown the server, release resources.
+     */
+    void shutdown();
+
+    enum ServerStatus {
+        ACTIVE,
+        STAND_BY,
+        ;
+    }
+
+}

dolphinscheduler-registry/dolphinscheduler-registry-api/src/main/java/org/apache/dolphinscheduler/registry/api/ha/ServerStatusChangeListener.java

@@ -0,0 +1,24 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.dolphinscheduler.registry.api.ha;
+
+public interface ServerStatusChangeListener {
+
+    void change(HAServer.ServerStatus originStatus, HAServer.ServerStatus currentStatus);
+
+}

dolphinscheduler-registry/dolphinscheduler-registry-plugins/dolphinscheduler-registry-etcd/src/main/java/org/apache/dolphinscheduler/plugin/registry/etcd/EtcdRegistry.java

@@ -34,6 +34,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
 import java.util.stream.Collectors;
 
 import javax.net.ssl.SSLException;
@@ -311,6 +313,35 @@ public class EtcdRegistry implements Registry {
         }
     }
 
+    @Override
+    public boolean acquireLock(String key, long timeout) {
+        Lock lockClient = client.getLockClient();
+        Lease leaseClient = client.getLeaseClient();
+        // get the lock with a lease
+        try {
+            long leaseId = leaseClient.grant(TIME_TO_LIVE_SECONDS).get().getID();
+            // keep the lease
+            lockClient.lock(byteSequence(key), leaseId).get(timeout, TimeUnit.MICROSECONDS);
+            client.getLeaseClient().keepAlive(leaseId, Observers.observer(response -> {
+            }));
+
+            // save the leaseId for release Lock
+            if (null == threadLocalLockMap.get()) {
+                threadLocalLockMap.set(new HashMap<>());
+            }
+            threadLocalLockMap.get().put(key, leaseId);
+            return true;
+        } catch (TimeoutException timeoutException) {
+            log.debug("Acquire lock: {} in {}/ms timeout", key, timeout);
+            return false;
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new RegistryException("etcd get lock error", e);
+        } catch (ExecutionException e) {
+            throw new RegistryException("etcd get lock error, lockKey: " + key, e);
+        }
+    }
+
     /**
      * release the lock by revoking the leaseId
      */

dolphinscheduler-registry/dolphinscheduler-registry-plugins/dolphinscheduler-registry-etcd/src/test/java/org/apache/dolphinscheduler/plugin/registry/etcd/EtcdKeepAliveLeaseManagerTest.java

@@ -36,6 +36,7 @@ class EtcdKeepAliveLeaseManagerTest {
     static Client client;
 
     static EtcdKeepAliveLeaseManager etcdKeepAliveLeaseManager;
+
     @BeforeAll
     public static void before() throws Exception {
         server = EtcdClusterExtension.builder()
@@ -65,8 +66,9 @@ class EtcdKeepAliveLeaseManagerTest {
 
     @AfterAll
     public static void after() throws IOException {
-        try (EtcdCluster closeServer = server.cluster()) {
+        try (
-            client.close();
+                EtcdCluster closeServer = server.cluster();
+                Client closedClient = client) {
         }
     }
 }

dolphinscheduler-registry/dolphinscheduler-registry-plugins/dolphinscheduler-registry-jdbc/src/main/java/org/apache/dolphinscheduler/plugin/registry/jdbc/JdbcRegistry.java

@@ -179,6 +179,17 @@ public class JdbcRegistry implements Registry {
         }
     }
 
+    @Override
+    public boolean acquireLock(String key, long timeout) {
+        try {
+            return registryLockManager.acquireLock(key, timeout);
+        } catch (RegistryException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new RegistryException(String.format("Acquire lock: %s error", key), e);
+        }
+    }
+
     @Override
     public boolean releaseLock(String key) {
         registryLockManager.releaseLock(key);

dolphinscheduler-registry/dolphinscheduler-registry-plugins/dolphinscheduler-registry-jdbc/src/main/java/org/apache/dolphinscheduler/plugin/registry/jdbc/task/RegistryLockManager.java

@@ -83,6 +83,30 @@ public class RegistryLockManager implements AutoCloseable {
         });
     }
 
+    /**
+     * Acquire the lock, if cannot get the lock will await.
+     */
+    public boolean acquireLock(String lockKey, long timeout) throws RegistryException {
+        long startTime = System.currentTimeMillis();
+        while (System.currentTimeMillis() - startTime < timeout) {
+            try {
+                if (lockHoldMap.containsKey(lockKey)) {
+                    return true;
+                }
+                JdbcRegistryLock jdbcRegistryLock = jdbcOperator.tryToAcquireLock(lockKey);
+                if (jdbcRegistryLock != null) {
+                    lockHoldMap.put(lockKey, jdbcRegistryLock);
+                    return true;
+                }
+            } catch (SQLException e) {
+                throw new RegistryException("Acquire the lock: " + lockKey + " error", e);
+            }
+            log.debug("Acquire the lock {} failed try again", lockKey);
+            ThreadUtils.sleep(JdbcRegistryConstant.LOCK_ACQUIRE_INTERVAL);
+        }
+        return false;
+    }
+
     public void releaseLock(String lockKey) {
         JdbcRegistryLock jdbcRegistryLock = lockHoldMap.get(lockKey);
         if (jdbcRegistryLock != null) {

dolphinscheduler-registry/dolphinscheduler-registry-plugins/dolphinscheduler-registry-zookeeper/src/main/java/org/apache/dolphinscheduler/plugin/registry/zookeeper/ZookeeperRegistry.java

@@ -217,11 +217,41 @@ public final class ZookeeperRegistry implements Registry {
     public boolean acquireLock(String key) {
         InterProcessMutex interProcessMutex = new InterProcessMutex(client, key);
         try {
+            if (interProcessMutex.isAcquiredInThisProcess()) {
+                return true;
+            }
+            Map<String, InterProcessMutex> processMutexMap = threadLocalLockMap.get();
+            if (null == processMutexMap) {
+                processMutexMap = new HashMap<>();
+                threadLocalLockMap.set(processMutexMap);
+            }
             interProcessMutex.acquire();
-            if (null == threadLocalLockMap.get()) {
+            processMutexMap.put(key, interProcessMutex);
-                threadLocalLockMap.set(new HashMap<>(3));
+            return true;
+        } catch (Exception e) {
+            try {
+                interProcessMutex.release();
+                throw new RegistryException(String.format("zookeeper get lock: %s error", key), e);
+            } catch (Exception exception) {
+                throw new RegistryException(String.format("zookeeper get lock: %s error", key), e);
+            }
         }
-            threadLocalLockMap.get().put(key, interProcessMutex);
+    }
+
+    @Override
+    public boolean acquireLock(String key, long timeout) {
+        InterProcessMutex interProcessMutex = new InterProcessMutex(client, key);
+        try {
+            if (interProcessMutex.isAcquiredInThisProcess()) {
+                return true;
+            }
+            Map<String, InterProcessMutex> processMutexMap = threadLocalLockMap.get();
+            if (null == processMutexMap) {
+                processMutexMap = new HashMap<>();
+                threadLocalLockMap.set(processMutexMap);
+            }
+            interProcessMutex.acquire(timeout, MILLISECONDS);
+            processMutexMap.put(key, interProcessMutex);
             return true;
         } catch (Exception e) {
             try {
@@ -235,13 +265,17 @@ public final class ZookeeperRegistry implements Registry {
 
     @Override
     public boolean releaseLock(String key) {
-        if (null == threadLocalLockMap.get().get(key)) {
+        Map<String, InterProcessMutex> processMutexMap = threadLocalLockMap.get();
+        if (processMutexMap == null) {
+            return true;
+        }
+        if (null == processMutexMap.get(key)) {
             return false;
         }
         try {
-            threadLocalLockMap.get().get(key).release();
+            processMutexMap.get(key).release();
-            threadLocalLockMap.get().remove(key);
+            processMutexMap.remove(key);
-            if (threadLocalLockMap.get().isEmpty()) {
+            if (processMutexMap.isEmpty()) {
                 threadLocalLockMap.remove();
             }
         } catch (Exception e) {

dolphinscheduler-standalone-server/src/main/resources/application.yaml

@@ -232,7 +232,8 @@ alert:
   # Define value is (0 = infinite), and alert server would be waiting alert result.
   wait-timeout: 0
   max-heartbeat-interval: 60s
-  query_alert_threshold: 100
+  # The maximum number of alerts that can be processed in parallel
+  sender-parallelism: 5
 
 api:
   audit-enable: false