001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.master.replication;
019
020import java.io.IOException;
021import org.apache.hadoop.hbase.client.replication.ReplicationPeerConfigUtil;
022import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
023import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
024import org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer;
025import org.apache.hadoop.hbase.replication.ReplicationException;
026import org.apache.hadoop.hbase.replication.ReplicationPeerConfig;
027import org.apache.yetus.audience.InterfaceAudience;
028import org.slf4j.Logger;
029import org.slf4j.LoggerFactory;
030
031import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.AddPeerStateData;
032import org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProcedureProtos.PeerModificationState;
033
034/**
035 * The procedure for adding a new replication peer.
036 */
037@InterfaceAudience.Private
038public class AddPeerProcedure extends ModifyPeerProcedure {
039
040  private static final Logger LOG = LoggerFactory.getLogger(AddPeerProcedure.class);
041
042  private ReplicationPeerConfig peerConfig;
043
044  private boolean enabled;
045
046  public AddPeerProcedure() {
047  }
048
049  public AddPeerProcedure(String peerId, ReplicationPeerConfig peerConfig, boolean enabled) {
050    super(peerId);
051    this.peerConfig = peerConfig;
052    this.enabled = enabled;
053  }
054
055  @Override
056  public PeerOperationType getPeerOperationType() {
057    return PeerOperationType.ADD;
058  }
059
060  @Override
061  protected PeerModificationState nextStateAfterRefresh() {
062    return peerConfig.isSerial() ? PeerModificationState.SERIAL_PEER_REOPEN_REGIONS
063      : super.nextStateAfterRefresh();
064  }
065
066  @Override
067  protected void updateLastPushedSequenceIdForSerialPeer(MasterProcedureEnv env)
068      throws IOException, ReplicationException {
069    setLastPushedSequenceId(env, peerConfig);
070  }
071
072  @Override
073  protected boolean enablePeerBeforeFinish() {
074    return enabled;
075  }
076
077  @Override
078  protected ReplicationPeerConfig getNewPeerConfig() {
079    return peerConfig;
080  }
081
082  @Override
083  protected void prePeerModification(MasterProcedureEnv env)
084      throws IOException, ReplicationException {
085    MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();
086    if (cpHost != null) {
087      cpHost.preAddReplicationPeer(peerId, peerConfig);
088    }
089    env.getReplicationPeerManager().preAddPeer(peerId, peerConfig);
090  }
091
092  @Override
093  protected void updatePeerStorage(MasterProcedureEnv env) throws ReplicationException {
094    env.getReplicationPeerManager().addPeer(peerId, peerConfig,
095      peerConfig.isSerial() ? false : enabled);
096  }
097
098  @Override
099  protected void postPeerModification(MasterProcedureEnv env)
100      throws IOException, ReplicationException {
101    LOG.info("Successfully added {} peer {}, config {}", enabled ? "ENABLED" : "DISABLED", peerId,
102      peerConfig);
103    MasterCoprocessorHost cpHost = env.getMasterCoprocessorHost();
104    if (cpHost != null) {
105      env.getMasterCoprocessorHost().postAddReplicationPeer(peerId, peerConfig);
106    }
107  }
108
109  @Override
110  protected void serializeStateData(ProcedureStateSerializer serializer) throws IOException {
111    super.serializeStateData(serializer);
112    serializer.serialize(AddPeerStateData.newBuilder()
113      .setPeerConfig(ReplicationPeerConfigUtil.convert(peerConfig)).setEnabled(enabled).build());
114  }
115
116  @Override
117  protected void deserializeStateData(ProcedureStateSerializer serializer) throws IOException {
118    super.deserializeStateData(serializer);
119    AddPeerStateData data = serializer.deserialize(AddPeerStateData.class);
120    peerConfig = ReplicationPeerConfigUtil.convert(data.getPeerConfig());
121    enabled = data.getEnabled();
122  }
123}