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HBASE-19665 Add table based replication peers/queues storage back
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171 changes: 171 additions & 0 deletions
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...cation/src/main/java/org/apache/hadoop/hbase/replication/TableReplicationPeerStorage.java
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| /** | ||
| * 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 static org.apache.hadoop.hbase.replication.ReplicationUtils.PEER_STATE_DISABLED_BYTES; | ||
| import static org.apache.hadoop.hbase.replication.ReplicationUtils.PEER_STATE_ENABLED_BYTES; | ||
|
|
||
| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.List; | ||
|
|
||
| import org.apache.hadoop.conf.Configuration; | ||
| import org.apache.hadoop.hbase.client.Delete; | ||
| import org.apache.hadoop.hbase.client.Get; | ||
| import org.apache.hadoop.hbase.client.Put; | ||
| import org.apache.hadoop.hbase.client.Result; | ||
| import org.apache.hadoop.hbase.client.ResultScanner; | ||
| import org.apache.hadoop.hbase.client.Scan; | ||
| import org.apache.hadoop.hbase.client.Table; | ||
| import org.apache.hadoop.hbase.client.replication.ReplicationPeerConfigUtil; | ||
| import org.apache.hadoop.hbase.exceptions.DeserializationException; | ||
| import org.apache.hadoop.hbase.util.Bytes; | ||
| import org.apache.hadoop.hbase.zookeeper.ZKWatcher; | ||
| import org.apache.yetus.audience.InterfaceAudience; | ||
|
|
||
| /** | ||
| * Table based replication peer storage. | ||
| */ | ||
| @InterfaceAudience.Private | ||
| public class TableReplicationPeerStorage extends TableReplicationStorageBase | ||
| implements ReplicationPeerStorage { | ||
|
|
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| public TableReplicationPeerStorage(ZKWatcher zookeeper, Configuration conf) throws IOException { | ||
| super(zookeeper, conf); | ||
| } | ||
|
|
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| @Override | ||
| public void addPeer(String peerId, ReplicationPeerConfig peerConfig, boolean enabled) | ||
| throws ReplicationException { | ||
| try (Table table = getReplicationMetaTable()) { | ||
| Put put = new Put(Bytes.toBytes(peerId)); | ||
| put.addColumn(FAMILY_PEER, QUALIFIER_PEER_CONFIG, | ||
| ReplicationPeerConfigUtil.toByteArray(peerConfig)); | ||
| put.addColumn(FAMILY_PEER, QUALIFIER_PEER_STATE, | ||
| enabled ? PEER_STATE_ENABLED_BYTES : PEER_STATE_DISABLED_BYTES); | ||
| table.put(put); | ||
| } catch (IOException e) { | ||
| throw new ReplicationException("Failed to add peer " + peerId, e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void removePeer(String peerId) throws ReplicationException { | ||
| try (Table table = getReplicationMetaTable()) { | ||
| Delete delete = new Delete(Bytes.toBytes(peerId)); | ||
| table.delete(delete); | ||
| } catch (IOException e) { | ||
| throw new ReplicationException("Failed to remove peer " + peerId, e); | ||
| } | ||
| } | ||
|
|
||
| // TODO make it to be a checkExistAndMutate operation. | ||
| private boolean peerExist(String peerId, Table table) throws IOException { | ||
| Get get = new Get(Bytes.toBytes(peerId)); | ||
| get.addColumn(FAMILY_PEER, QUALIFIER_PEER_STATE); | ||
| return table.exists(get); | ||
| } | ||
|
|
||
| @Override | ||
| public void setPeerState(String peerId, boolean enabled) throws ReplicationException { | ||
| try (Table table = getReplicationMetaTable()) { | ||
| if (!peerExist(peerId, table)) { | ||
| throw new ReplicationException("Peer " + peerId + " does not exist."); | ||
| } | ||
| Put put = new Put(Bytes.toBytes(peerId)); | ||
| put.addColumn(FAMILY_PEER, QUALIFIER_PEER_STATE, | ||
| enabled ? PEER_STATE_ENABLED_BYTES : PEER_STATE_DISABLED_BYTES); | ||
| table.put(put); | ||
| } catch (IOException e) { | ||
| throw new ReplicationException( | ||
| "Failed to set peer state, peerId=" + peerId + ", state=" + enabled, e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void updatePeerConfig(String peerId, ReplicationPeerConfig peerConfig) | ||
| throws ReplicationException { | ||
| try (Table table = getReplicationMetaTable()) { | ||
| if (!peerExist(peerId, table)) { | ||
| throw new ReplicationException("Peer " + peerId + " does not exist."); | ||
| } | ||
| Put put = new Put(Bytes.toBytes(peerId)); | ||
| put.addColumn(FAMILY_PEER, QUALIFIER_PEER_CONFIG, | ||
| ReplicationPeerConfigUtil.toByteArray(peerConfig)); | ||
| table.put(put); | ||
| } catch (IOException e) { | ||
| throw new ReplicationException("Failed to update peer configuration, peerId=" + peerId, e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public List<String> listPeerIds() throws ReplicationException { | ||
| try (Table table = getReplicationMetaTable()) { | ||
| Scan scan = new Scan().addColumn(FAMILY_PEER, QUALIFIER_PEER_STATE); | ||
| try (ResultScanner scanner = table.getScanner(scan)) { | ||
| List<String> peerIds = new ArrayList<>(); | ||
| for (Result r : scanner) { | ||
| peerIds.add(Bytes.toString(r.getRow())); | ||
| } | ||
| return peerIds; | ||
| } | ||
| } catch (IOException e) { | ||
| throw new ReplicationException("Failed to list peers", e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isPeerEnabled(String peerId) throws ReplicationException { | ||
| try (Table table = getReplicationMetaTable()) { | ||
| Get get = new Get(Bytes.toBytes(peerId)).addColumn(FAMILY_PEER, QUALIFIER_PEER_STATE); | ||
| Result r = table.get(get); | ||
| if (r == null) { | ||
| throw new ReplicationException("Peer " + peerId + " does not found"); | ||
| } | ||
| return Arrays.equals(PEER_STATE_ENABLED_BYTES, r.getValue(FAMILY_PEER, QUALIFIER_PEER_STATE)); | ||
| } catch (IOException e) { | ||
| throw new ReplicationException("Failed to read the peer state, peerId=" + peerId, e); | ||
| } | ||
| } | ||
|
|
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| @Override | ||
| public ReplicationPeerConfig getPeerConfig(String peerId) throws ReplicationException { | ||
| try (Table table = getReplicationMetaTable()) { | ||
| Get get = new Get(Bytes.toBytes(peerId)).addColumn(FAMILY_PEER, QUALIFIER_PEER_CONFIG); | ||
| Result r = table.get(get); | ||
| if (r == null) { | ||
| throw new ReplicationException("Peer " + peerId + " does not found"); | ||
| } | ||
| byte[] data = r.getValue(FAMILY_PEER, QUALIFIER_PEER_CONFIG); | ||
| if (data == null || data.length == 0) { | ||
| throw new ReplicationException( | ||
| "Replication peer config data shouldn't be empty, peerId=" + peerId); | ||
| } | ||
| try { | ||
| return ReplicationPeerConfigUtil.parsePeerFrom(data); | ||
| } catch (DeserializationException e) { | ||
| throw new ReplicationException( | ||
| "Failed to parse replication peer config for peer with id=" + peerId, e); | ||
| } | ||
| } catch (IOException e) { | ||
| throw new ReplicationException( | ||
| "Failed to read the peer configuration in hbase:replication, peerId=" + peerId, e); | ||
| } | ||
| } | ||
| } |
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