| /* |
| * 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.ratis.server.impl; |
| |
| import org.apache.ratis.protocol.RaftGroupId; |
| import org.apache.ratis.protocol.RaftPeer; |
| import org.apache.ratis.protocol.RaftPeerId; |
| import org.apache.ratis.server.RaftServerMXBean; |
| import org.apache.ratis.util.JmxRegister; |
| |
| import javax.management.ObjectName; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| /** JMX for {@link RaftServerImpl}. */ |
| class RaftServerJmxAdapter extends JmxRegister implements RaftServerMXBean { |
| static boolean registerMBean(String id, String groupId, RaftServerMXBean mBean, JmxRegister jmx) { |
| final String prefix = "Ratis:service=RaftServer,group=" + groupId + ",id="; |
| final String registered = jmx.register(mBean, Arrays.asList( |
| () -> prefix + id, |
| () -> prefix + ObjectName.quote(id))); |
| return registered != null; |
| } |
| |
| private final RaftServerImpl server; |
| |
| RaftServerJmxAdapter(RaftServerImpl server) { |
| this.server = server; |
| } |
| |
| boolean registerMBean() { |
| return registerMBean(getId(), getGroupId(), this, this); |
| } |
| |
| @Override |
| public String getId() { |
| return server.getId().toString(); |
| } |
| |
| @Override |
| public String getLeaderId() { |
| RaftPeerId leaderId = server.getState().getLeaderId(); |
| if (leaderId != null) { |
| return leaderId.toString(); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public long getCurrentTerm() { |
| return server.getState().getCurrentTerm(); |
| } |
| |
| @Override |
| public String getGroupId() { |
| return server.getMemberId().getGroupId().toString(); |
| } |
| |
| @Override |
| public String getRole() { |
| return server.getRole().toString(); |
| } |
| |
| @Override |
| public List<String> getFollowers() { |
| return server.getRole().getLeaderState() |
| .map(LeaderStateImpl::getFollowers) |
| .orElseGet(Stream::empty) |
| .map(RaftPeer::toString) |
| .collect(Collectors.toList()); |
| } |
| |
| @Override |
| public List<String> getGroups() { |
| return server.getRaftServer().getGroupIds().stream() |
| .map(RaftGroupId::toString) |
| .collect(Collectors.toList()); |
| } |
| } |