| /** |
| * 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.regionserver; |
| |
| import java.util.Optional; |
| import java.util.function.BiPredicate; |
| |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.replication.ReplicationPeerImpl; |
| import org.apache.hadoop.hbase.replication.ReplicationPeers; |
| import org.apache.hadoop.hbase.replication.SyncReplicationState; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| @InterfaceAudience.Private |
| class SyncReplicationPeerInfoProviderImpl implements SyncReplicationPeerInfoProvider { |
| |
| private final ReplicationPeers replicationPeers; |
| |
| private final SyncReplicationPeerMappingManager mapping; |
| |
| SyncReplicationPeerInfoProviderImpl(ReplicationPeers replicationPeers, |
| SyncReplicationPeerMappingManager mapping) { |
| this.replicationPeers = replicationPeers; |
| this.mapping = mapping; |
| } |
| |
| @Override |
| public Optional<Pair<String, String>> getPeerIdAndRemoteWALDir(TableName table) { |
| if (table == null) { |
| return Optional.empty(); |
| } |
| String peerId = mapping.getPeerId(table); |
| if (peerId == null) { |
| return Optional.empty(); |
| } |
| ReplicationPeerImpl peer = replicationPeers.getPeer(peerId); |
| if (peer == null) { |
| return Optional.empty(); |
| } |
| Pair<SyncReplicationState, SyncReplicationState> states = |
| peer.getSyncReplicationStateAndNewState(); |
| if ((states.getFirst() == SyncReplicationState.ACTIVE && |
| states.getSecond() == SyncReplicationState.NONE) || |
| (states.getFirst() == SyncReplicationState.DOWNGRADE_ACTIVE && |
| states.getSecond() == SyncReplicationState.ACTIVE)) { |
| return Optional.of(Pair.newPair(peerId, peer.getPeerConfig().getRemoteWALDir())); |
| } else { |
| return Optional.empty(); |
| } |
| } |
| |
| @Override |
| public boolean checkState(TableName table, |
| BiPredicate<SyncReplicationState, SyncReplicationState> checker) { |
| String peerId = mapping.getPeerId(table); |
| if (peerId == null) { |
| return false; |
| } |
| ReplicationPeerImpl peer = replicationPeers.getPeer(peerId); |
| if (peer == null) { |
| return false; |
| } |
| Pair<SyncReplicationState, SyncReplicationState> states = |
| peer.getSyncReplicationStateAndNewState(); |
| return checker.test(states.getFirst(), states.getSecond()); |
| } |
| } |