| /* |
| * 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.remoting.telnet.support.command; |
| |
| import org.apache.dubbo.common.extension.Activate; |
| import org.apache.dubbo.common.extension.ExtensionLoader; |
| import org.apache.dubbo.common.status.Status; |
| import org.apache.dubbo.common.status.StatusChecker; |
| import org.apache.dubbo.common.status.support.StatusUtils; |
| import org.apache.dubbo.common.utils.CollectionUtils; |
| 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.remoting.telnet.support.TelnetUtils; |
| import org.apache.dubbo.rpc.model.ApplicationModel; |
| import org.apache.dubbo.rpc.model.ScopeModelUtil; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import static org.apache.dubbo.common.constants.CommonConstants.COMMA_SPLIT_PATTERN; |
| import static org.apache.dubbo.config.Constants.STATUS_KEY; |
| |
| /** |
| * StatusTelnetHandler |
| */ |
| @Activate |
| @Help(parameter = "[-l]", summary = "Show status.", detail = "Show status.") |
| public class StatusTelnetHandler implements TelnetHandler { |
| |
| @Override |
| public String telnet(Channel channel, String message) { |
| ApplicationModel applicationModel = |
| ScopeModelUtil.getApplicationModel(channel.getUrl().getScopeModel()); |
| ExtensionLoader<StatusChecker> extensionLoader = applicationModel.getExtensionLoader(StatusChecker.class); |
| if ("-l".equals(message)) { |
| List<StatusChecker> checkers = extensionLoader.getActivateExtension(channel.getUrl(), STATUS_KEY); |
| String[] header = new String[] {"resource", "status", "message"}; |
| List<List<String>> table = new ArrayList<>(); |
| Map<String, Status> statuses = new HashMap<>(); |
| if (CollectionUtils.isNotEmpty(checkers)) { |
| for (StatusChecker checker : checkers) { |
| String name = extensionLoader.getExtensionName(checker); |
| Status stat; |
| try { |
| stat = checker.check(); |
| } catch (Throwable t) { |
| stat = new Status(Status.Level.ERROR, t.getMessage()); |
| } |
| statuses.put(name, stat); |
| if (stat.getLevel() != null && stat.getLevel() != Status.Level.UNKNOWN) { |
| List<String> row = new ArrayList<>(); |
| row.add(name); |
| row.add(String.valueOf(stat.getLevel())); |
| row.add(stat.getMessage() == null ? "" : stat.getMessage()); |
| table.add(row); |
| } |
| } |
| } |
| Status stat = StatusUtils.getSummaryStatus(statuses); |
| List<String> row = new ArrayList<>(); |
| row.add("summary"); |
| row.add(String.valueOf(stat.getLevel())); |
| row.add(stat.getMessage()); |
| table.add(row); |
| return TelnetUtils.toTable(header, table); |
| } else if (message.length() > 0) { |
| return "Unsupported parameter " + message + " for status."; |
| } |
| String status = channel.getUrl().getParameter("status"); |
| Map<String, Status> statuses = new HashMap<>(); |
| if (StringUtils.isNotEmpty(status)) { |
| String[] ss = COMMA_SPLIT_PATTERN.split(status); |
| for (String s : ss) { |
| StatusChecker handler = extensionLoader.getExtension(s); |
| Status stat; |
| try { |
| stat = handler.check(); |
| } catch (Throwable t) { |
| stat = new Status(Status.Level.ERROR, t.getMessage()); |
| } |
| statuses.put(s, stat); |
| } |
| } |
| Status stat = StatusUtils.getSummaryStatus(statuses); |
| return String.valueOf(stat.getLevel()); |
| } |
| } |