org.apache.tephra.persist.AbstractTransactionStateStorage Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of phoenix-client

Phoenix Client

There is a newer version: 4.15.0-HBase-1.5

/*
 * 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.tephra.persist;

import com.google.common.util.concurrent.AbstractIdleService;
import org.apache.tephra.snapshot.SnapshotCodecProvider;

import java.io.IOException;
import java.io.OutputStream;

/**
 * Common base class for all transaction storage implementations. This implement logic to prefix a snapshot
 * with a version when encoding, and to select the correct codec for decoding based on this version prefix.
 */
public abstract class AbstractTransactionStateStorage extends AbstractIdleService implements TransactionStateStorage {

  protected final SnapshotCodecProvider codecProvider;

  protected AbstractTransactionStateStorage(SnapshotCodecProvider codecProvider) {
    this.codecProvider = codecProvider;
  }

  @Override
  public void writeSnapshot(OutputStream out, TransactionSnapshot snapshot) throws IOException {
    codecProvider.encode(out, snapshot);
  }
}