code smell

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

@@ -22,6 +22,10 @@ package org.apache.dolphinscheduler.plugin.alert.script;
  */
 public class OSUtils {
 
+    public OSUtils() {
+        throw new UnsupportedOperationException("Construct OSUtils");
+    }
+
     public static Boolean isWindows() {
         return System.getProperty("os.name").startsWith("Windows");
     }

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

@@ -17,10 +17,8 @@
 
 package org.apache.dolphinscheduler.plugin.alert.script;
 
-import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.InputStreamReader;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -41,25 +39,21 @@ public class ProcessUtils {
     public static Integer executeScript(String... cmd) {
 
         int exitCode = -1;
+
         ProcessBuilder processBuilder = new ProcessBuilder(cmd);
         try {
             Process process = processBuilder.start();
-
             InputStream in = process.getErrorStream();
-            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(in));
-            StringBuilder result = new StringBuilder();
 
-            StreamGobbler inputStreamGobbler =
-                    new StreamGobbler(process.getInputStream());
-            StreamGobbler errorStreamGobbler =
-                    new StreamGobbler(process.getErrorStream());
+            StreamGobbler inputStreamGobbler = new StreamGobbler(process.getInputStream());
+            StreamGobbler errorStreamGobbler = new StreamGobbler(process.getErrorStream());
 
             inputStreamGobbler.start();
             errorStreamGobbler.start();
             return process.waitFor();
-
         } catch (IOException | InterruptedException e) {
-            logger.error("execute alert script error", e.getMessage());
+            logger.error("execute alert script error {}", e.getMessage());
+            Thread.currentThread().interrupt();
         }
 
         return exitCode;

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

@@ -67,6 +67,7 @@ public class ScriptSender {
             return alertResult;
         }
         alertResult.setMessage("send script alert msg error,exitCode is " + exitCode);
+        logger.info("send script alert msg error,exitCode is {}", exitCode);
         return alertResult;
     }
 

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

@@ -38,6 +38,7 @@ public class StreamGobbler extends Thread {
         this.inputStream = inputStream;
     }
 
+    @Override
     public void run() {
         InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
         BufferedReader inputBufferReader = new BufferedReader(inputStreamReader);
@@ -50,10 +51,10 @@ public class StreamGobbler extends Thread {
                 output.append(System.getProperty("line.separator"));
             }
             if (output.length() > 0) {
-                logger.info(output.toString());
+                logger.info("out put msg is{}",output.toString());
             }
         } catch (IOException e) {
-            logger.error("I/O error occurs %S", e.getMessage());
+            logger.error("I/O error occurs {}", e.getMessage());
         }
     }
 

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

@@ -31,7 +31,6 @@ import org.junit.Test;
  */
 public class ScriptAlertChannelFactoryTest {
 
-
     @Test
     public void testGetParams() {
         ScriptAlertChannelFactory scriptAlertChannelFactory = new ScriptAlertChannelFactory();