/*
* 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 java.util.ArrayList;
import java.util.List;
import com.alibaba.dubbo.common.Extension;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.common.utils.StringUtils;
import com.alibaba.dubbo.remoting.Channel;
import com.alibaba.dubbo.remoting.RemotingException;
import com.alibaba.dubbo.remoting.telnet.TelnetHandler;
import com.alibaba.dubbo.remoting.telnet.support.Help;
import com.alibaba.dubbo.remoting.telnet.support.TelnetUtils;
import com.alibaba.dubbo.rpc.Exporter;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.RpcStatus;
import com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol;
/**
* CountTelnetHandler
*
* @author william.liangf
*/
@Help(parameter = "[service] [method] [times]", summary = "Count the service.", detail = "Count the service.")
@Extension("count")
public class CountTelnetHandler implements TelnetHandler {
public String telnet(final 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\ncount XxxService\r\ncount XxxService xxxMethod\r\ncount XxxService xxxMethod 10\r\nor \"cd XxxService\" firstly.";
}
StringBuilder buf = new StringBuilder();
if (service != null && service.length() > 0) {
buf.append("Use default service " + service + ".\r\n");
}
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.";
}
final int t = Integer.parseInt(times);
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 (t > 0) {
final String mtd = method;
final Invoker<?> inv = invoker;
final String prompt = channel.getUrl().getParameter("prompt", "telnet");
Thread thread = new Thread(new Runnable() {
public void run() {
for (int i = 0; i < t; i ++) {
String result = count(inv, mtd);
try {
channel.send("\r\n" + result);
} catch (RemotingException e1) {
return;
}
if (i < t - 1) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
}
}
}
try {
channel.send("\r\n" + prompt + "> ");
} catch (RemotingException e1) {
return;
}
}
}, "TelnetCount");
thread.setDaemon(true);
thread.start();
}
} else {
buf.append("No such service " + service);
}
return buf.toString();
}
private String count(Invoker<?> invoker, String method) {
URL url = invoker.getUrl();
List<List<String>> table = new ArrayList<List<String>>();
List<String> header = new ArrayList<String>();
header.add("method");
header.add("total");
header.add("failed");
header.add("active");
header.add("average");
header.add("max");
if (method == null || method.length() == 0) {
for (Method m : invoker.getInterface().getMethods()) {
RpcStatus count = RpcStatus.getStatus(url, m.getName());
List<String> row = new ArrayList<String>();
row.add(m.getName());
row.add(String.valueOf(count.getTotal()));
row.add(String.valueOf(count.getFailed()));
row.add(String.valueOf(count.getActive()));
row.add(String.valueOf(count.getSucceededAverageElapsed()) + "ms");
row.add(String.valueOf(count.getSucceededMaxElapsed()) + "ms");
table.add(row);
}
} else {
boolean found = false;
for (Method m : invoker.getInterface().getMethods()) {
if (m.getName().equals(method)) {
found = true;
break;
}
}
if (found) {
RpcStatus count = RpcStatus.getStatus(url, method);
List<String> row = new ArrayList<String>();
row.add(method);
row.add(String.valueOf(count.getTotal()));
row.add(String.valueOf(count.getFailed()));
row.add(String.valueOf(count.getActive()));
row.add(String.valueOf(count.getSucceededAverageElapsed()) + "ms");
row.add(String.valueOf(count.getSucceededMaxElapsed()) + "ms");
table.add(row);
} else {
return "No such method " + method + " in class " + invoker.getInterface().getName();
}
}
return TelnetUtils.toTable(header, table);
}
}