| /** |
| * 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.io.IOException; |
| import java.util.ArrayList; |
| |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hbase.thirdparty.com.google.common.collect.Lists; |
| import org.apache.hbase.thirdparty.com.google.common.util.concurrent.AbstractService; |
| |
| /** |
| * A Base implementation for {@link ReplicationEndpoint}s. For internal use. Uses our internal |
| * Guava. |
| */ |
| // This class has been made InterfaceAudience.Private in 2.0.0. It used to be |
| // LimitedPrivate. See HBASE-15982. |
| @InterfaceAudience.Private |
| public abstract class BaseReplicationEndpoint extends AbstractService |
| implements ReplicationEndpoint { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(BaseReplicationEndpoint.class); |
| public static final String REPLICATION_WALENTRYFILTER_CONFIG_KEY |
| = "hbase.replication.source.custom.walentryfilters"; |
| protected Context ctx; |
| |
| @Override |
| public void init(Context context) throws IOException { |
| this.ctx = context; |
| |
| if (this.ctx != null){ |
| ReplicationPeer peer = this.ctx.getReplicationPeer(); |
| if (peer != null){ |
| peer.registerPeerConfigListener(this); |
| } else { |
| LOG.warn("Not tracking replication peer config changes for Peer Id " + this.ctx.getPeerId() + |
| " because there's no such peer"); |
| } |
| } |
| } |
| |
| @Override |
| /** |
| * No-op implementation for subclasses to override if they wish to execute logic if their config changes |
| */ |
| public void peerConfigUpdated(ReplicationPeerConfig rpc){ |
| |
| } |
| |
| /** Returns a default set of filters */ |
| @Override |
| public WALEntryFilter getWALEntryfilter() { |
| ArrayList<WALEntryFilter> filters = Lists.newArrayList(); |
| WALEntryFilter scopeFilter = getScopeWALEntryFilter(); |
| if (scopeFilter != null) { |
| filters.add(scopeFilter); |
| } |
| WALEntryFilter tableCfFilter = getNamespaceTableCfWALEntryFilter(); |
| if (tableCfFilter != null) { |
| filters.add(tableCfFilter); |
| } |
| if (ctx != null && ctx.getPeerConfig() != null) { |
| String filterNameCSV = ctx.getPeerConfig().getConfiguration().get(REPLICATION_WALENTRYFILTER_CONFIG_KEY); |
| if (filterNameCSV != null && !filterNameCSV.isEmpty()) { |
| String[] filterNames = filterNameCSV.split(","); |
| for (String filterName : filterNames) { |
| try { |
| Class<?> clazz = Class.forName(filterName); |
| filters.add((WALEntryFilter) clazz.getDeclaredConstructor().newInstance()); |
| } catch (Exception e) { |
| LOG.error("Unable to create WALEntryFilter " + filterName, e); |
| } |
| } |
| } |
| } |
| return filters.isEmpty() ? null : new ChainWALEntryFilter(filters); |
| } |
| |
| /** Returns a WALEntryFilter for checking the scope. Subclasses can |
| * return null if they don't want this filter */ |
| protected WALEntryFilter getScopeWALEntryFilter() { |
| return new ScopeWALEntryFilter(); |
| } |
| |
| /** Returns a WALEntryFilter for checking replication per table and CF. Subclasses can |
| * return null if they don't want this filter */ |
| protected WALEntryFilter getNamespaceTableCfWALEntryFilter() { |
| return new NamespaceTableCfWALEntryFilter(ctx.getReplicationPeer()); |
| } |
| |
| @Override |
| public boolean canReplicateToSameCluster() { |
| return false; |
| } |
| |
| @Override |
| public boolean isStarting() { |
| return state() == State.STARTING; |
| } |
| } |