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Server functionality for HBase
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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.coprocessor;

import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.NamespaceDescriptor;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.master.RegionPlan;
import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;

import java.io.IOException;
import java.util.List;

@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
@InterfaceStability.Evolving
public abstract class BaseMasterAndRegionObserver extends BaseRegionObserver
    implements MasterObserver {
  @Override
  public void preCreateTable(ObserverContext ctx,
      HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
  }

  @Override
  public void postCreateTable(ObserverContext ctx,
      HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
  }

  @Override
  public void preCreateTableHandler(
      final ObserverContext ctx,
      HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
  }

  @Override
  public void postCreateTableHandler(
      final ObserverContext ctx,
      HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
  }

  @Override
  public void preDeleteTable(ObserverContext ctx,
      TableName tableName) throws IOException {
  }

  @Override
  public void postDeleteTable(ObserverContext ctx,
      TableName tableName) throws IOException {
  }

  @Override
  public void preDeleteTableHandler(
      final ObserverContext ctx, TableName tableName)
      throws IOException{
  }

  @Override
  public void postDeleteTableHandler(
      final ObserverContext ctx, TableName tableName)
      throws IOException {
  }

  @Override
  public void preModifyTable(ObserverContext ctx,
      TableName tableName, HTableDescriptor htd) throws IOException {
  }

  @Override
  public void postModifyTableHandler(
      ObserverContext ctx, TableName tableName,
      HTableDescriptor htd) throws IOException {
  }

  @Override
  public void preModifyTableHandler(
      ObserverContext ctx, TableName tableName,
      HTableDescriptor htd) throws IOException {
  }

  @Override
  public void postModifyTable(ObserverContext ctx,
      TableName tableName, HTableDescriptor htd) throws IOException {
  }

  @Override
  public void preCreateNamespace(ObserverContext ctx,
      NamespaceDescriptor ns) throws IOException {
  }

  @Override
  public void postCreateNamespace(ObserverContext ctx,
      NamespaceDescriptor ns) throws IOException {
  }

  @Override
  public void preDeleteNamespace(ObserverContext ctx,
      String namespace) throws IOException {
  }

  @Override
  public void postDeleteNamespace(ObserverContext ctx,
      String namespace) throws IOException {
  }

  @Override
  public void preModifyNamespace(ObserverContext ctx,
      NamespaceDescriptor ns) throws IOException {
  }

  @Override
  public void postModifyNamespace(ObserverContext ctx,
      NamespaceDescriptor ns) throws IOException {
  }

  @Override
  public void preAddColumn(ObserverContext ctx,
      TableName tableName, HColumnDescriptor column) throws IOException {
  }

  @Override
  public void postAddColumn(ObserverContext ctx,
      TableName tableName, HColumnDescriptor column) throws IOException {
  }

  @Override
  public void preAddColumnHandler(
      ObserverContext ctx, TableName tableName,
      HColumnDescriptor column) throws IOException {
  }

  @Override
  public void postAddColumnHandler(
      ObserverContext ctx, TableName tableName,
      HColumnDescriptor column) throws IOException {
  }

  @Override
  public void preModifyColumn(ObserverContext ctx,
      TableName tableName, HColumnDescriptor descriptor) throws IOException {
  }

  @Override
  public void postModifyColumn(ObserverContext ctx,
      TableName tableName, HColumnDescriptor descriptor) throws IOException {
  }

  @Override
  public void preModifyColumnHandler(
      ObserverContext ctx, TableName tableName,
      HColumnDescriptor descriptor) throws IOException {
  }

  @Override
  public void postModifyColumnHandler(
      ObserverContext ctx, TableName tableName,
      HColumnDescriptor descriptor) throws IOException {
  }

  @Override
  public void preDeleteColumn(ObserverContext ctx,
      TableName tableName, byte[] c) throws IOException {
  }

  @Override
  public void postDeleteColumn(ObserverContext ctx,
      TableName tableName, byte[] c) throws IOException {
  }

  @Override
  public void preDeleteColumnHandler(
      ObserverContext ctx, TableName tableName,
      byte[] c) throws IOException {
  }

  @Override
  public void postDeleteColumnHandler(
      ObserverContext ctx, TableName tableName,
      byte[] c) throws IOException {
  }


  @Override
  public void preEnableTable(ObserverContext ctx,
      TableName tableName) throws IOException {
  }

  @Override
  public void postEnableTable(ObserverContext ctx,
      TableName tableName) throws IOException {
  }

  @Override
  public void preEnableTableHandler(
      ObserverContext ctx, TableName tableName)
      throws IOException {
  }

  @Override
  public void postEnableTableHandler(
      ObserverContext ctx, TableName tableName)
      throws IOException {
  }

  @Override
  public void preDisableTable(ObserverContext ctx,
      TableName tableName) throws IOException {
  }

  @Override
  public void postDisableTable(ObserverContext ctx,
      TableName tableName) throws IOException {
  }

  @Override
  public void preDisableTableHandler(
      ObserverContext ctx, TableName tableName)
      throws IOException {
  }

  @Override
  public void postDisableTableHandler(
      ObserverContext ctx, TableName tableName)
      throws IOException {
  }

  @Override
  public void preAssign(ObserverContext ctx,
      HRegionInfo regionInfo) throws IOException {
  }

  @Override
  public void postAssign(ObserverContext ctx,
      HRegionInfo regionInfo) throws IOException {
  }

  @Override
  public void preUnassign(ObserverContext ctx,
      HRegionInfo regionInfo, boolean force) throws IOException {
  }

  @Override
  public void postUnassign(ObserverContext ctx,
      HRegionInfo regionInfo, boolean force) throws IOException {
  }

  @Override
  public void preRegionOffline(ObserverContext ctx,
    HRegionInfo regionInfo) throws IOException {
  }

  @Override
  public void postRegionOffline(ObserverContext ctx,
    HRegionInfo regionInfo) throws IOException {
  }

  @Override
  public void preBalance(ObserverContext ctx)
      throws IOException {
  }

  @Override
  public void postBalance(ObserverContext ctx, List plans)
      throws IOException {
  }

  @Override
  public boolean preBalanceSwitch(ObserverContext ctx,
      boolean b) throws IOException {
    return b;
  }

  @Override
  public void postBalanceSwitch(ObserverContext ctx,
      boolean oldValue, boolean newValue) throws IOException {
  }

  @Override
  public void preShutdown(ObserverContext ctx)
      throws IOException {
  }

  @Override
  public void preStopMaster(ObserverContext ctx)
      throws IOException {
  }

  @Override
  public void postStartMaster(ObserverContext ctx)
      throws IOException {
  }

  @Override
  public void preMasterInitialization(
      ObserverContext ctx) throws IOException {
  }

  @Override
  public void start(CoprocessorEnvironment ctx) throws IOException {
  }

  @Override
  public void stop(CoprocessorEnvironment ctx) throws IOException {
  }

  @Override
  public void preMove(ObserverContext ctx,
      HRegionInfo region, ServerName srcServer, ServerName destServer)
  throws IOException {
  }

  @Override
  public void postMove(ObserverContext ctx,
      HRegionInfo region, ServerName srcServer, ServerName destServer)
  throws IOException {
  }

  @Override
  public void preSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot, final HTableDescriptor hTableDescriptor)
      throws IOException {
  }

  @Override
  public void postSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot, final HTableDescriptor hTableDescriptor)
      throws IOException {
  }

  @Override
  public void preCloneSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot, final HTableDescriptor hTableDescriptor)
      throws IOException {
  }

  @Override
  public void postCloneSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot, final HTableDescriptor hTableDescriptor)
      throws IOException {
  }

  @Override
  public void preRestoreSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot, final HTableDescriptor hTableDescriptor)
      throws IOException {
  }

  @Override
  public void postRestoreSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot, final HTableDescriptor hTableDescriptor)
      throws IOException {
  }

  @Override
  public void preDeleteSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot) throws IOException {
  }

  @Override
  public void postDeleteSnapshot(final ObserverContext ctx,
      final SnapshotDescription snapshot) throws IOException {
  }

  @Override
  public void preGetTableDescriptors(ObserverContext ctx,
      List tableNamesList, List descriptors)
      throws IOException {
  }

  @Override
  public void postGetTableDescriptors(ObserverContext ctx,
      List descriptors) throws IOException {
  }
}