| /** |
| * 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.replication; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| @InterfaceAudience.Private |
| public class ReplicationPeerImpl implements ReplicationPeer { |
| |
| private final Configuration conf; |
| |
| private final String id; |
| |
| private volatile ReplicationPeerConfig peerConfig; |
| |
| private volatile PeerState peerState; |
| |
| // The lower 16 bits are the current sync replication state, the higher 16 bits are the new sync |
| // replication state. Embedded in one int so user can not get an inconsistency view of state and |
| // new state. |
| private volatile int syncReplicationStateBits; |
| |
| private static final int SHIFT = 16; |
| |
| private static final int AND_BITS = 0xFFFF; |
| |
| private final List<ReplicationPeerConfigListener> peerConfigListeners; |
| |
| /** |
| * Constructor that takes all the objects required to communicate with the specified peer, except |
| * for the region server addresses. |
| * @param conf configuration object to this peer |
| * @param id string representation of this peer's identifier |
| * @param peerConfig configuration for the replication peer |
| */ |
| public ReplicationPeerImpl(Configuration conf, String id, ReplicationPeerConfig peerConfig, |
| boolean peerState, SyncReplicationState syncReplicationState, |
| SyncReplicationState newSyncReplicationState) { |
| this.conf = conf; |
| this.id = id; |
| this.peerState = peerState ? PeerState.ENABLED : PeerState.DISABLED; |
| this.peerConfig = peerConfig; |
| this.syncReplicationStateBits = |
| syncReplicationState.value() | (newSyncReplicationState.value() << SHIFT); |
| this.peerConfigListeners = new ArrayList<>(); |
| } |
| |
| public void setPeerState(boolean enabled) { |
| this.peerState = enabled ? PeerState.ENABLED : PeerState.DISABLED; |
| } |
| |
| public void setPeerConfig(ReplicationPeerConfig peerConfig) { |
| this.peerConfig = peerConfig; |
| peerConfigListeners.forEach(listener -> listener.peerConfigUpdated(peerConfig)); |
| } |
| |
| public void setNewSyncReplicationState(SyncReplicationState newState) { |
| this.syncReplicationStateBits = |
| (this.syncReplicationStateBits & AND_BITS) | (newState.value() << SHIFT); |
| } |
| |
| public void transitSyncReplicationState() { |
| this.syncReplicationStateBits = |
| (this.syncReplicationStateBits >>> SHIFT) | (SyncReplicationState.NONE.value() << SHIFT); |
| } |
| |
| /** |
| * Get the identifier of this peer |
| * @return string representation of the id (short) |
| */ |
| @Override |
| public String getId() { |
| return id; |
| } |
| |
| @Override |
| public PeerState getPeerState() { |
| return peerState; |
| } |
| |
| private static SyncReplicationState getSyncReplicationState(int bits) { |
| return SyncReplicationState.valueOf(bits & AND_BITS); |
| } |
| |
| private static SyncReplicationState getNewSyncReplicationState(int bits) { |
| return SyncReplicationState.valueOf(bits >>> SHIFT); |
| } |
| |
| public Pair<SyncReplicationState, SyncReplicationState> getSyncReplicationStateAndNewState() { |
| int bits = this.syncReplicationStateBits; |
| return Pair.newPair(getSyncReplicationState(bits), getNewSyncReplicationState(bits)); |
| } |
| |
| public SyncReplicationState getNewSyncReplicationState() { |
| return getNewSyncReplicationState(syncReplicationStateBits); |
| } |
| |
| @Override |
| public SyncReplicationState getSyncReplicationState() { |
| return getSyncReplicationState(syncReplicationStateBits); |
| } |
| |
| @Override |
| public ReplicationPeerConfig getPeerConfig() { |
| return peerConfig; |
| } |
| |
| @Override |
| public Configuration getConfiguration() { |
| return conf; |
| } |
| |
| @Override |
| public Map<TableName, List<String>> getTableCFs() { |
| return this.peerConfig.getTableCFsMap(); |
| } |
| |
| @Override |
| public Set<String> getNamespaces() { |
| return this.peerConfig.getNamespaces(); |
| } |
| |
| @Override |
| public long getPeerBandwidth() { |
| return this.peerConfig.getBandwidth(); |
| } |
| |
| @Override |
| public void registerPeerConfigListener(ReplicationPeerConfigListener listener) { |
| this.peerConfigListeners.add(listener); |
| } |
| } |