blob: 615438d3b861eb455e097633fbd31f2595531384 [file] [log] [blame]
/*
* 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.telnet;
import java.lang.reflect.Method;
import com.alibaba.dubbo.common.extension.Activate;
import com.alibaba.dubbo.common.utils.StringUtils;
import com.alibaba.dubbo.remoting.Channel;
import com.alibaba.dubbo.remoting.telnet.TelnetHandler;
import com.alibaba.dubbo.remoting.telnet.support.Help;
import com.alibaba.dubbo.rpc.Exporter;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol;
import com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter;
/**
* TraceTelnetHandler
*
* @author william.liangf
*/
@Activate
@Help(parameter = "[service] [method] [times]", summary = "Trace the service.", detail = "Trace the service.")
public class TraceTelnetHandler implements TelnetHandler {
public String telnet(Channel channel, String message) {
String service = (String) channel.getAttribute(ChangeTelnetHandler.SERVICE_KEY);
if ((service == null || service.length() == 0)
&& (message == null || message.length() == 0)) {
return "Please input service name, eg: \r\ntrace XxxService\r\ntrace XxxService xxxMethod\r\ntrace XxxService xxxMethod 10\r\nor \"cd XxxService\" firstly.";
}
String[] parts = message.split("\\s+");
String method;
String times;
if (service == null || service.length() == 0) {
service = parts.length > 0 ? parts[0] : null;
method = parts.length > 1 ? parts[1] : null;
} else {
method = parts.length > 0 ? parts[0] : null;
}
if (StringUtils.isInteger(method)) {
times = method;
method = null;
} else {
times = parts.length > 2 ? parts[2] : "1";
}
if (! StringUtils.isInteger(times)) {
return "Illegal times " + times + ", must be integer.";
}
Invoker<?> invoker = null;
for (Exporter<?> exporter : DubboProtocol.getDubboProtocol().getExporters()) {
if (service.equals(exporter.getInvoker().getInterface().getSimpleName())
|| service.equals(exporter.getInvoker().getInterface().getName())
|| service.equals(exporter.getInvoker().getUrl().getPath())) {
invoker = exporter.getInvoker();
break;
}
}
if (invoker != null) {
if (method != null && method.length() > 0) {
boolean found = false;
for (Method m : invoker.getInterface().getMethods()) {
if (m.getName().equals(method)) {
found = true;
break;
}
}
if (! found) {
return "No such method " + method + " in class " + invoker.getInterface().getName();
}
}
TraceFilter.addTracer(invoker.getInterface(), method, channel, Integer.parseInt(times));
} else {
return "No such service " + service;
}
return null;
}
}