@Override
// @wjw_note: 删除此server下的所有zookeeper上的数据!
public void UnRegisterScheduleServer(ScheduleServer server) throws Exception {
// 1. 删除server
String zkPath = this.pathServer;
if (this.getZooKeeper().exists(zkPath, false) != null) {
ZKTools.deleteTree(this.getZooKeeper(), zkPath + "/" + server.getUuid());
}
// 2. 删除task
zkPath = this.pathTask;
if (this.getZooKeeper().exists(zkPath, false) == null) {
return;
}
List<String> children = this.getZooKeeper().getChildren(zkPath, false);
if (null == children || children.size() == 0) {
return;
}
for (int i = 0; i < children.size(); i++) {
String taskName = children.get(i);
String taskPath = zkPath + "/" + taskName + "/" + server.getUuid();
if (this.getZooKeeper().exists(taskPath, false) != null) {
ZKTools.deleteTree(this.getZooKeeper(), taskPath);
}
}
}
void someTask() {
try {
server.Open(this);
} catch (Throwable t) {
Log.e("TestWebServer", t.getMessage());
}
}
public void onDestroy() {
try {
server.Close();
} catch (Throwable t) {
Log.e("TestWebServer", t.getMessage());
}
super.onDestroy();
Log.d("TestWebServer", "onDestroy");
}
@Override
// @wjw_note: 在Zookeeper上注册ScheduleServer
public void registerScheduleServer(ScheduleServer server) throws Exception {
if (server.isRegisted() == true) {
throw new Exception(server.getUuid() + " 被重复注册");
}
String realPath = null;
// 此处必须增加UUID作为唯一性保障
StringBuilder id = new StringBuilder();
id.append(server.getIp())
.append("$")
.append(UUID.randomUUID().toString().replaceAll("-", "").toUpperCase());
String zkServerPath = pathServer + "/" + id.toString() + "$";
realPath =
this.getZooKeeper()
.create(zkServerPath, null, this.zkManager.getAcl(), CreateMode.PERSISTENT_SEQUENTIAL);
server.setUuid(realPath.substring(realPath.lastIndexOf("/") + 1));
Timestamp heartBeatTime = new Timestamp(getSystemTime());
server.setHeartBeatTime(heartBeatTime);
String valueString = this.gson.toJson(server);
this.getZooKeeper().setData(realPath, valueString.getBytes(), -1);
server.setRegisted(true);
}
public void startServer() {
scheduleServer.startBooting();
scheduleServer.readSystemConfigFile();
scheduleServer.init();
scheduleServer.initializeContext();
scheduleServer.initializeListeners();
scheduleServer.createSystemObject();
}
public void stopServer() {
scheduleServer.realeaseProcesses();
scheduleServer.destroy();
scheduleServer.destroySystemObjects();
scheduleServer.destroyListener();
scheduleServer.destroyContext();
scheduleServer.shutdown();
}
/**
* x发送心跳信息
*
* @param server
* @throws Exception
*/
@Override
public boolean refreshScheduleServer(ScheduleServer server) throws Exception {
Timestamp heartBeatTime = new Timestamp(this.getSystemTime());
String zkPath = this.pathServer + "/" + server.getUuid();
if (this.getZooKeeper().exists(zkPath, false) == null) {
// 数据可能被清除，先清除内存数据后，重新注册数据
server.setRegisted(false);
return false;
}
Timestamp oldHeartBeatTime = server.getHeartBeatTime();
server.setHeartBeatTime(heartBeatTime);
server.setVersion(server.getVersion() + 1);
String valueString = this.gson.toJson(server);
try {
this.getZooKeeper().setData(zkPath, valueString.getBytes(), -1);
} catch (Exception e) {
// 恢复上次的心跳时间
server.setHeartBeatTime(oldHeartBeatTime);
server.setVersion(server.getVersion() - 1);
throw e;
}
return true;
}
