/* | |
* 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.filter; | |
import java.util.ArrayList; | |
import java.util.Set; | |
import java.util.concurrent.ConcurrentHashMap; | |
import java.util.concurrent.ConcurrentMap; | |
import java.util.concurrent.atomic.AtomicInteger; | |
import com.alibaba.dubbo.common.Extension; | |
import com.alibaba.dubbo.common.json.JSON; | |
import com.alibaba.dubbo.common.logger.Logger; | |
import com.alibaba.dubbo.common.logger.LoggerFactory; | |
import com.alibaba.dubbo.common.utils.ConcurrentHashSet; | |
import com.alibaba.dubbo.remoting.Channel; | |
import com.alibaba.dubbo.rpc.Filter; | |
import com.alibaba.dubbo.rpc.Invocation; | |
import com.alibaba.dubbo.rpc.Invoker; | |
import com.alibaba.dubbo.rpc.Result; | |
import com.alibaba.dubbo.rpc.RpcContext; | |
import com.alibaba.dubbo.rpc.RpcException; | |
/** | |
* TraceFilter | |
* | |
* @author william.liangf | |
*/ | |
@Extension("trace") | |
public class TraceFilter implements Filter { | |
private static final Logger logger = LoggerFactory.getLogger(TraceFilter.class); | |
private static final String TRACE_MAX = "trace.max"; | |
private static final String TRACE_COUNT = "trace.count"; | |
private static final ConcurrentMap<String, Set<Channel>> tracers = new ConcurrentHashMap<String, Set<Channel>>(); | |
public static void addTracer(Class<?> type, String method, Channel channel, int max) { | |
channel.setAttribute(TRACE_MAX, max); | |
channel.setAttribute(TRACE_COUNT, new AtomicInteger()); | |
String key = method != null && method.length() > 0 ? type.getName() + "." + method : type.getName(); | |
Set<Channel> channels = tracers.get(key); | |
if (channels == null) { | |
tracers.putIfAbsent(key, new ConcurrentHashSet<Channel>()); | |
channels = tracers.get(key); | |
} | |
channels.add(channel); | |
} | |
public static void removeTracer(Class<?> type, String method, Channel channel) { | |
channel.removeAttribute(TRACE_MAX); | |
channel.removeAttribute(TRACE_COUNT); | |
String key = method != null && method.length() > 0 ? type.getName() + "." + method : type.getName(); | |
Set<Channel> channels = tracers.get(key); | |
if (channels != null) { | |
channels.remove(channel); | |
} | |
} | |
public Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException { | |
long start = System.currentTimeMillis(); | |
Result result = invoker.invoke(invocation); | |
long end = System.currentTimeMillis(); | |
if (tracers.size() > 0) { | |
String key = invoker.getInterface().getName() + "." + invocation.getMethodName(); | |
Set<Channel> channels = tracers.get(key); | |
if (channels == null || channels.size() == 0) { | |
key = invoker.getInterface().getName(); | |
channels = tracers.get(key); | |
} | |
if (channels != null && channels.size() > 0) { | |
for (Channel channel : new ArrayList<Channel>(channels)) { | |
if (channel.isConnected()) { | |
try { | |
int max = 1; | |
Integer m = (Integer) channel.getAttribute(TRACE_MAX); | |
if (m != null) { | |
max = (int) m; | |
} | |
int count = 0; | |
AtomicInteger c = (AtomicInteger) channel.getAttribute(TRACE_COUNT); | |
if (c == null) { | |
c = new AtomicInteger(); | |
channel.setAttribute(TRACE_COUNT, c); | |
} | |
count = c.getAndIncrement(); | |
if (count < max) { | |
String prompt = channel.getUrl().getParameter("prompt", "telnet"); | |
channel.send("\r\n" + RpcContext.getContext().getRemoteAddress() + " -> " | |
+ invoker.getInterface().getName() | |
+ "." + invocation.getMethodName() | |
+ "(" + JSON.json(invocation.getArguments()) + ")" + " -> " + JSON.json(result.getResult()) | |
+ "\r\nelapsed: "+(end - start) +" ms." | |
+ "\r\n\r\n" + prompt + "> "); | |
} | |
if(count >= max - 1) { | |
channels.remove(channel); | |
} | |
} catch (Throwable e) { | |
channels.remove(channel); | |
logger.warn(e.getMessage(), e); | |
} | |
} else { | |
channels.remove(channel); | |
} | |
} | |
} | |
} | |
return result; | |
} | |
} |