| /* |
| * 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.hadoop.hbase.master.assignment; |
| |
| import java.util.List; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.locks.Lock; |
| import java.util.concurrent.locks.ReadWriteLock; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| import java.util.stream.Collectors; |
| import org.apache.hadoop.hbase.ServerName; |
| import org.apache.hadoop.hbase.client.RegionInfo; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * State of Server; list of hosted regions, etc. |
| */ |
| @InterfaceAudience.Private |
| public class ServerStateNode implements Comparable<ServerStateNode> { |
| private final Set<RegionStateNode> regions; |
| private final ServerName serverName; |
| // the lock here is for fencing SCP and TRSP, so not all operations need to hold this lock |
| private final ReadWriteLock lock = new ReentrantReadWriteLock(); |
| private volatile ServerState state = ServerState.ONLINE; |
| |
| public ServerStateNode(ServerName serverName) { |
| this.serverName = serverName; |
| this.regions = ConcurrentHashMap.newKeySet(); |
| } |
| |
| public ServerName getServerName() { |
| return serverName; |
| } |
| |
| public ServerState getState() { |
| return state; |
| } |
| |
| public boolean isInState(final ServerState... expected) { |
| boolean expectedState = false; |
| if (expected != null) { |
| for (int i = 0; i < expected.length; ++i) { |
| expectedState |= (state == expected[i]); |
| } |
| } |
| return expectedState; |
| } |
| |
| void setState(final ServerState state) { |
| this.state = state; |
| } |
| |
| public int getRegionCount() { |
| return regions.size(); |
| } |
| |
| public List<RegionInfo> getRegionInfoList() { |
| return regions.stream().map(RegionStateNode::getRegionInfo).collect(Collectors.toList()); |
| } |
| |
| public List<RegionInfo> getSystemRegionInfoList() { |
| return regions.stream().filter(RegionStateNode::isSystemTable) |
| .map(RegionStateNode::getRegionInfo).collect(Collectors.toList()); |
| } |
| |
| public void addRegion(final RegionStateNode regionNode) { |
| this.regions.add(regionNode); |
| } |
| |
| public void removeRegion(final RegionStateNode regionNode) { |
| this.regions.remove(regionNode); |
| } |
| |
| public Lock readLock() { |
| return lock.readLock(); |
| } |
| |
| public Lock writeLock() { |
| return lock.writeLock(); |
| } |
| |
| @Override |
| public int compareTo(final ServerStateNode other) { |
| return getServerName().compareTo(other.getServerName()); |
| } |
| |
| @Override |
| public int hashCode() { |
| return getServerName().hashCode(); |
| } |
| |
| @Override |
| public boolean equals(final Object other) { |
| if (this == other) { |
| return true; |
| } |
| if (!(other instanceof ServerStateNode)) { |
| return false; |
| } |
| return compareTo((ServerStateNode) other) == 0; |
| } |
| |
| @Override |
| public String toString() { |
| return getServerName() + "/" + getState() + "/regionCount=" + this.regions.size() + "/lock=" |
| + this.lock; |
| } |
| } |