/*
* Copyright 1999-2011 Alibaba Group.
*
* 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.dubbo.rpc.protocol.dubbo.status;
import java.util.Collection;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;
import com.alibaba.dubbo.common.extension.Activate;
import com.alibaba.dubbo.common.status.Status;
import com.alibaba.dubbo.common.status.StatusChecker;
import com.alibaba.dubbo.remoting.ChannelHandler;
import com.alibaba.dubbo.remoting.Server;
import com.alibaba.dubbo.remoting.exchange.ExchangeServer;
import com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeServer;
import com.alibaba.dubbo.remoting.transport.AbstractPeer;
import com.alibaba.dubbo.remoting.transport.dispather.WrappedChannelHandler;
import com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol;
/**
* ThreadPoolStatusChecker
*
* @author william.liangf
*/
@Activate
public class ThreadPoolStatusChecker implements StatusChecker {
public Status check() {
Collection<ExchangeServer> servers = DubboProtocol.getDubboProtocol().getServers();
if (servers == null || servers.size() == 0) {
return new Status(Status.Level.UNKNOWN);
}
for (Server server : servers) {
if (server instanceof HeaderExchangeServer) {
HeaderExchangeServer exchanger = (HeaderExchangeServer) server;
server = exchanger.getServer();
}
if (server instanceof AbstractPeer) {
ChannelHandler handler = ((AbstractPeer)server).getDelegateHandler();
if (handler instanceof WrappedChannelHandler) {
Executor executor = ((WrappedChannelHandler) handler).getExecutor();
if (executor instanceof ThreadPoolExecutor) {
ThreadPoolExecutor tp = (ThreadPoolExecutor)executor;
boolean ok = tp.getActiveCount() < tp.getMaximumPoolSize() - 1;
return new Status(ok ? Status.Level.OK : Status.Level.WARN,
"max:" + tp.getMaximumPoolSize()
+ ",core:" + tp.getCorePoolSize()
+ ",largest:" + tp.getLargestPoolSize()
+ ",active:" + tp.getActiveCount()
+ ",task:" + tp.getTaskCount());
}
}
}
}
return new Status(Status.Level.UNKNOWN);
}
}