add embeded zookeeper for test

escheduler-common/src/test/java/cn/escheduler/common/zk/StandaloneZKServerForTest.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 cn.escheduler.common.zk;
+
+import java.io.File;
+import java.util.Properties;
+
+import cn.escheduler.common.thread.ThreadPoolExecutors;
+import org.apache.zookeeper.server.ServerConfig;
+import org.apache.zookeeper.server.ZooKeeperServerMain;
+import org.apache.zookeeper.server.quorum.QuorumPeerConfig;
+import org.junit.Before;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+/**
+ * just for test
+ */
+public class StandaloneZKServerForTest {
+
+    private static final Logger logger = LoggerFactory.getLogger(StandaloneZKServerForTest.class);
+
+    private static volatile ZooKeeperServerMain zkServer = null;
+
+
+    @Before
+    public void before() {
+        logger.info("standalone zookeeper server for test service start ");
+
+        ThreadPoolExecutors.getInstance().execute(new Runnable() {
+            @Override
+            public void run() {
+
+                //delete zk data dir ?
+                File zkFile = new File(System.getProperty("java.io.tmpdir"), "zookeeper");
+//                if(zkFile.exists()){
+//                    zkFile.delete();
+//                }
+                startStandaloneServer("2000", zkFile.getAbsolutePath(), "2181", "10", "5");
+            }
+        });
+
+    }
+
+
+    /**
+     * start zk server
+     * @param tickTime  zookeeper ticktime
+     * @param dataDir zookeeper data dir
+     * @param clientPort zookeeper client port
+     * @param initLimit zookeeper init limit
+     * @param syncLimit zookeeper sync limit
+     */
+    private void startStandaloneServer(String tickTime, String dataDir, String clientPort, String initLimit, String syncLimit) {
+        Properties props = new Properties();
+        props.setProperty("tickTime", tickTime);
+        props.setProperty("dataDir", dataDir);
+        props.setProperty("clientPort", clientPort);
+        props.setProperty("initLimit", initLimit);
+        props.setProperty("syncLimit", syncLimit);
+
+        QuorumPeerConfig quorumConfig = new QuorumPeerConfig();
+        try {
+            quorumConfig.parseProperties(props);
+
+            if(zkServer == null ){
+
+                synchronized (StandaloneZKServerForTest.class){
+                    if(zkServer == null ){
+                        zkServer = new ZooKeeperServerMain();
+                        final ServerConfig config = new ServerConfig();
+                        config.readFrom(quorumConfig);
+                        zkServer.runFromConfig(config);
+                    }
+                }
+
+            }
+
+        } catch (Exception e) {
+            logger.error("start standalone server fail！", e);
+        }
+    }
+
+
+}