| /* |
| * 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.qos.legacy; |
| |
| import org.apache.dubbo.common.extension.Activate; |
| import org.apache.dubbo.common.utils.StringUtils; |
| import org.apache.dubbo.remoting.Channel; |
| import org.apache.dubbo.remoting.telnet.TelnetHandler; |
| import org.apache.dubbo.remoting.telnet.support.Help; |
| import org.apache.dubbo.rpc.Exporter; |
| import org.apache.dubbo.rpc.Invoker; |
| import org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol; |
| import org.apache.dubbo.rpc.protocol.dubbo.filter.TraceFilter; |
| |
| import java.lang.reflect.Method; |
| |
| /** |
| * TraceTelnetHandler |
| */ |
| @Activate |
| @Help(parameter = "[service] [method] [times]", summary = "Trace the service.", detail = "Trace the service.") |
| public class TraceTelnetHandler implements TelnetHandler { |
| |
| @Override |
| public String telnet(Channel channel, String message) { |
| String service = (String) channel.getAttribute(ChangeTelnetHandler.SERVICE_KEY); |
| if ((StringUtils.isEmpty(service)) |
| && (StringUtils.isEmpty(message))) { |
| 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; |
| // message like : XxxService , XxxService 10 , XxxService xxxMethod , XxxService xxxMethod 10 |
| if (StringUtils.isEmpty(service)) { |
| service = parts.length > 0 ? parts[0] : null; |
| method = parts.length > 1 ? parts[1] : null; |
| times = parts.length > 2 ? parts[2] : "1"; |
| } else { //message like : xxxMethod, xxxMethod 10 |
| method = parts.length > 0 ? parts[0] : null; |
| times = parts.length > 1 ? parts[1] : "1"; |
| } |
| if (StringUtils.isNumber(method)) { |
| times = method; |
| method = null; |
| } |
| if (!StringUtils.isNumber(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 (StringUtils.isNotEmpty(method)) { |
| 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; |
| } |
| |
| } |