hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/codec/TokenIdentifierCodec.java

/**
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.ozone.om.codec;

import com.google.common.base.Preconditions;
import com.google.protobuf.InvalidProtocolBufferException;
import org.apache.hadoop.ozone.security.OzoneTokenIdentifier;
import org.apache.hadoop.hdds.utils.db.Codec;

import java.io.IOException;

/**
 * Codec to encode TokenIdentifierCodec as byte array.
 */
public class TokenIdentifierCodec implements Codec<OzoneTokenIdentifier> {

  @Override
  public byte[] toPersistedFormat(OzoneTokenIdentifier object) {
    Preconditions
        .checkNotNull(object, "Null object can't be converted to byte array.");
    return object.getBytes();
  }

  @Override
  public OzoneTokenIdentifier fromPersistedFormat(byte[] rawData)
      throws IOException {
    Preconditions.checkNotNull(rawData,
        "Null byte array can't converted to real object.");
    try {
      return OzoneTokenIdentifier.readProtoBuf(rawData);
    } catch (InvalidProtocolBufferException e) {
      throw new IllegalArgumentException(
          "Can't encode the the raw data from the byte array", e);
    }
  }

  @Override
  public OzoneTokenIdentifier copyObject(OzoneTokenIdentifier object) {
    return object;
  }
}