/*
 * 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.client;

import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.ipc.RpcControllerFactory;
import org.apache.hadoop.hbase.testclassification.ClientTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

@Tag(SmallTests.TAG)
@Tag(ClientTests.TAG)
public class TestBufferedMutator {

  /**
   * My BufferedMutator. Just to prove that I can insert a BM other than default.
   */
  public static class MyBufferedMutator extends BufferedMutatorImpl {
    MyBufferedMutator(ClusterConnection conn, RpcRetryingCallerFactory rpcCallerFactory,
      RpcControllerFactory rpcFactory, BufferedMutatorParams params) {
      super(conn, rpcCallerFactory, rpcFactory, params);
    }
  }

  @Test
  public void testAlternateBufferedMutatorImpl(TestInfo testInfo) throws IOException {
    BufferedMutatorParams params =
      new BufferedMutatorParams(TableName.valueOf(testInfo.getTestMethod().get().getName()));
    Configuration conf = HBaseConfiguration.create();
    conf.set(HConstants.CLIENT_CONNECTION_REGISTRY_IMPL_CONF_KEY,
      DoNothingConnectionRegistry.class.getName());
    try (Connection connection = ConnectionFactory.createConnection(conf)) {
      BufferedMutator bm = connection.getBufferedMutator(params);
      // Assert we get default BM if nothing specified.
      assertTrue(bm instanceof BufferedMutatorImpl);
      // Now try and set my own BM implementation.
      params.implementationClassName(MyBufferedMutator.class.getName());
      bm = connection.getBufferedMutator(params);
      assertTrue(bm instanceof MyBufferedMutator);
    }
    // Now try creating a Connection after setting an alterate BufferedMutator into
    // the configuration and confirm we get what was expected.
    conf.set(BufferedMutator.CLASSNAME_KEY, MyBufferedMutator.class.getName());
    try (Connection connection = ConnectionFactory.createConnection(conf)) {
      BufferedMutator bm = connection.getBufferedMutator(params);
      assertTrue(bm instanceof MyBufferedMutator);
    }
  }
}
