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1   /*
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  package org.apache.hadoop.hbase.regionserver;
20  
21  import java.io.IOException;
22  import java.util.List;
23  
24  import org.apache.hadoop.classification.InterfaceAudience;
25  import org.apache.hadoop.hbase.CellScanner;
26  import org.apache.hadoop.hbase.protobuf.generated.AdminProtos.WALEntry;
27  
28  /**
29   * A sink for a replication stream has to expose this service.
30   * This service allows an application to hook into the
31   * regionserver and behave as a replication sink.
32   */
33  @InterfaceAudience.Private
34  public interface ReplicationSinkService extends ReplicationService {
35    /**
36     * Carry on the list of log entries down to the sink
37     * @param entries list of WALEntries to replicate
38     * @param cells Cells that the WALEntries refer to (if cells is non-null)
39     * @throws IOException
40     */
41    void replicateLogEntries(List<WALEntry> entries, CellScanner cells) throws IOException;
42  }