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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.dubbo.rpc.protocol.dubbo.filter;
import org.apache.dubbo.common.constants.CommonConstants;
import org.apache.dubbo.common.extension.Activate;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.common.utils.CollectionUtils;
import org.apache.dubbo.common.utils.ConcurrentHashSet;
import org.apache.dubbo.common.utils.JsonUtils;
import org.apache.dubbo.common.utils.StringUtils;
import org.apache.dubbo.remoting.Channel;
import org.apache.dubbo.remoting.Constants;
import org.apache.dubbo.rpc.Filter;
import org.apache.dubbo.rpc.Invocation;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.Result;
import org.apache.dubbo.rpc.RpcContext;
import org.apache.dubbo.rpc.RpcException;
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 static org.apache.dubbo.common.constants.LoggerCodeConstants.PROTOCOL_FAILED_PARSE;
/**
* TraceFilter
*/
@Activate(group = CommonConstants.PROVIDER)
public class TraceFilter implements Filter {
private static final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(TraceFilter.class);
private static final String TRACE_MAX = "trace.max";
private static final String TRACE_COUNT = "trace.count";
private static final ConcurrentMap> TRACERS = new ConcurrentHashMap<>();
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 = StringUtils.isNotEmpty(method) ? type.getName() + "." + method : type.getName();
Set channels = TRACERS.computeIfAbsent(key, k -> new ConcurrentHashSet<>());
channels.add(channel);
}
public static void removeTracer(Class type, String method, Channel channel) {
channel.removeAttribute(TRACE_MAX);
channel.removeAttribute(TRACE_COUNT);
String key = StringUtils.isNotEmpty(method) ? type.getName() + "." + method : type.getName();
Set channels = TRACERS.get(key);
if (channels != null) {
channels.remove(channel);
}
}
@Override
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 channels = TRACERS.get(key);
if (CollectionUtils.isEmpty(channels)) {
key = invoker.getInterface().getName();
channels = TRACERS.get(key);
}
if (CollectionUtils.isNotEmpty(channels)) {
for (Channel channel : new ArrayList<>(channels)) {
if (channel.isConnected()) {
try {
int max = 1;
Integer m = (Integer) channel.getAttribute(TRACE_MAX);
if (m != null) {
max = m;
}
int count;
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(Constants.PROMPT_KEY, Constants.DEFAULT_PROMPT);
channel.send("\r\n" + RpcContext.getServiceContext().getRemoteAddress() + " -> "
+ invoker.getInterface().getName()
+ "." + invocation.getMethodName()
+ "(" + JsonUtils.getJson().toJson(invocation.getArguments()) + ")" + " -> " + JsonUtils.getJson().toJson(result.getValue())
+ "\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(PROTOCOL_FAILED_PARSE, "", "", e.getMessage(), e);
}
} else {
channels.remove(channel);
}
}
}
}
return result;
}
}