com.alibaba.nacos.naming.cluster.ServerStatusManager Maven / Gradle / Ivy
/*
* Copyright 1999-2018 Alibaba Group Holding Ltd.
*
* Licensed 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 com.alibaba.nacos.naming.cluster;
import com.alibaba.nacos.naming.consistency.ConsistencyService;
import com.alibaba.nacos.naming.misc.GlobalExecutor;
import com.alibaba.nacos.naming.misc.SwitchDomain;
import com.alibaba.nacos.common.utils.StringUtils;
import org.springframework.stereotype.Service;
import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.Optional;
/**
* Detect and control the working status of local server.
*
* @author nkorange
* @since 1.0.0
*/
@Service
public class ServerStatusManager {
@Resource(name = "persistentConsistencyServiceDelegate")
private ConsistencyService consistencyService;
private final SwitchDomain switchDomain;
private ServerStatus serverStatus = ServerStatus.STARTING;
public ServerStatusManager(SwitchDomain switchDomain) {
this.switchDomain = switchDomain;
}
@PostConstruct
public void init() {
GlobalExecutor.registerServerStatusUpdater(new ServerStatusUpdater());
}
private void refreshServerStatus() {
if (StringUtils.isNotBlank(switchDomain.getOverriddenServerStatus())) {
serverStatus = ServerStatus.valueOf(switchDomain.getOverriddenServerStatus());
return;
}
if (consistencyService.isAvailable()) {
serverStatus = ServerStatus.UP;
} else {
serverStatus = ServerStatus.DOWN;
}
}
public ServerStatus getServerStatus() {
return serverStatus;
}
public Optional getErrorMsg() {
return consistencyService.getErrorMsg();
}
public class ServerStatusUpdater implements Runnable {
@Override
public void run() {
refreshServerStatus();
}
}
}