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EphemeralIpPortClientManager.java
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EphemeralIpPortClientManager.java
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/*
* 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.core.v2.client.manager.impl;
import com.alibaba.nacos.api.common.Constants;
import com.alibaba.nacos.common.notify.NotifyCenter;
import com.alibaba.nacos.naming.consistency.ephemeral.distro.v2.DistroClientVerifyInfo;
import com.alibaba.nacos.naming.constants.ClientConstants;
import com.alibaba.nacos.naming.core.DistroMapper;
import com.alibaba.nacos.naming.core.v2.client.Client;
import com.alibaba.nacos.naming.core.v2.client.ClientAttributes;
import com.alibaba.nacos.naming.core.v2.client.factory.ClientFactory;
import com.alibaba.nacos.naming.core.v2.client.factory.ClientFactoryHolder;
import com.alibaba.nacos.naming.core.v2.client.impl.IpPortBasedClient;
import com.alibaba.nacos.naming.core.v2.client.manager.ClientManager;
import com.alibaba.nacos.naming.core.v2.event.client.ClientEvent;
import com.alibaba.nacos.naming.healthcheck.heartbeat.ClientBeatUpdateTask;
import com.alibaba.nacos.naming.misc.ClientConfig;
import com.alibaba.nacos.naming.misc.GlobalExecutor;
import com.alibaba.nacos.naming.misc.Loggers;
import com.alibaba.nacos.naming.misc.NamingExecuteTaskDispatcher;
import com.alibaba.nacos.naming.misc.SwitchDomain;
import com.alibaba.nacos.naming.utils.DistroUtils;
import org.springframework.context.annotation.DependsOn;
import org.springframework.stereotype.Component;
import java.util.Collection;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.TimeUnit;
/**
* The manager of {@code IpPortBasedClient} and ephemeral.
*
* @author xiweng.yy
*/
@Component("ephemeralIpPortClientManager")
public class EphemeralIpPortClientManager implements ClientManager {
private final ConcurrentMap<String, IpPortBasedClient> clients = new ConcurrentHashMap<>();
private final DistroMapper distroMapper;
private final ClientFactory<IpPortBasedClient> clientFactory;
public EphemeralIpPortClientManager(DistroMapper distroMapper, SwitchDomain switchDomain) {
this.distroMapper = distroMapper;
GlobalExecutor.scheduleExpiredClientCleaner(new ExpiredClientCleaner(this, switchDomain), 0,
Constants.DEFAULT_HEART_BEAT_INTERVAL, TimeUnit.MILLISECONDS);
clientFactory = ClientFactoryHolder.getInstance().findClientFactory(ClientConstants.EPHEMERAL_IP_PORT);
}
@Override
public boolean clientConnected(String clientId, ClientAttributes attributes) {
return clientConnected(clientFactory.newClient(clientId, attributes));
}
@Override
public boolean clientConnected(final Client client) {
clients.computeIfAbsent(client.getClientId(), s -> {
Loggers.SRV_LOG.info("Client connection {} connect", client.getClientId());
IpPortBasedClient ipPortBasedClient = (IpPortBasedClient) client;
ipPortBasedClient.init();
return ipPortBasedClient;
});
return true;
}
@Override
public boolean syncClientConnected(String clientId, ClientAttributes attributes) {
return clientConnected(clientFactory.newSyncedClient(clientId, attributes));
}
@Override
public boolean clientDisconnected(String clientId) {
Loggers.SRV_LOG.info("Client connection {} disconnect, remove instances and subscribers", clientId);
IpPortBasedClient client = clients.remove(clientId);
if (null == client) {
return true;
}
NotifyCenter.publishEvent(new ClientEvent.ClientDisconnectEvent(client, isResponsibleClient(client)));
client.release();
return true;
}
@Override
public Client getClient(String clientId) {
return clients.get(clientId);
}
@Override
public boolean contains(String clientId) {
return clients.containsKey(clientId);
}
@Override
public Collection<String> allClientId() {
return clients.keySet();
}
@Override
public boolean isResponsibleClient(Client client) {
if (client instanceof IpPortBasedClient) {
return distroMapper.responsible(((IpPortBasedClient) client).getResponsibleId());
}
return false;
}
@Override
public boolean verifyClient(DistroClientVerifyInfo verifyData) {
String clientId = verifyData.getClientId();
IpPortBasedClient client = clients.get(clientId);
if (null != client) {
if (client.getRevision() == verifyData.getRevision()) {
NamingExecuteTaskDispatcher.getInstance()
.dispatchAndExecuteTask(clientId, new ClientBeatUpdateTask(client));
return true;
} else {
Loggers.DISTRO.info("[DISTRO-VERIFY-FAILED] IpPortBasedClient revision local={}, remote={}",
client.getRevision(), verifyData.getRevision());
}
}
return false;
}
private static class ExpiredClientCleaner implements Runnable {
private final EphemeralIpPortClientManager clientManager;
private final SwitchDomain switchDomain;
public ExpiredClientCleaner(EphemeralIpPortClientManager clientManager, SwitchDomain switchDomain) {
this.clientManager = clientManager;
this.switchDomain = switchDomain;
}
@Override
public void run() {
long currentTime = System.currentTimeMillis();
for (String each : clientManager.allClientId()) {
IpPortBasedClient client = (IpPortBasedClient) clientManager.getClient(each);
if (null != client && isExpireClient(currentTime, client)) {
clientManager.clientDisconnected(each);
}
}
}
private boolean isExpireClient(long currentTime, IpPortBasedClient client) {
long noUpdatedTime = currentTime - client.getLastUpdatedTime();
return client.isEphemeral() && (
isExpirePublishedClient(noUpdatedTime, client) && isExpireSubscriberClient(noUpdatedTime, client)
|| noUpdatedTime > ClientConfig.getInstance().getClientExpiredTime());
}
private boolean isExpirePublishedClient(long noUpdatedTime, IpPortBasedClient client) {
return client.getAllPublishedService().isEmpty() && noUpdatedTime > Constants.DEFAULT_IP_DELETE_TIMEOUT;
}
private boolean isExpireSubscriberClient(long noUpdatedTime, IpPortBasedClient client) {
return client.getAllSubscribeService().isEmpty() || noUpdatedTime > switchDomain.getDefaultPushCacheMillis();
}
}
}