org.apache.sentry.hdfs.ThriftSerializer.java Source code

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Here is the source code for org.apache.sentry.hdfs.ThriftSerializer.java

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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.sentry.hdfs;

import java.io.IOException;

import com.google.common.annotations.VisibleForTesting;
import org.apache.thrift.TBase;
import org.apache.thrift.TDeserializer;
import org.apache.thrift.TException;
import org.apache.thrift.TSerializer;
import org.apache.thrift.protocol.TCompactProtocol;

public class ThriftSerializer {

    // Use default max thrift message size here.
    // TODO: Figure out a way to make maxMessageSize configurable, eg. create a serializer singleton at startup by
    // passing a max_size parameter
    @VisibleForTesting
    static long maxMessageSize = ServiceConstants.ClientConfig.SENTRY_HDFS_THRIFT_MAX_MESSAGE_SIZE_DEFAULT;

    @SuppressWarnings("rawtypes")
    public static byte[] serialize(TBase baseObject) throws IOException {
        TSerializer serializer = new TSerializer(new TCompactProtocol.Factory(maxMessageSize, maxMessageSize));
        try {
            return serializer.serialize(baseObject);
        } catch (TException e) {
            throw new IOException("Error serializing thrift object " + baseObject, e);
        }
    }

    @SuppressWarnings("rawtypes")
    public static TBase deserialize(TBase baseObject, byte[] serialized) throws IOException {
        TDeserializer deserializer = new TDeserializer(
                new TCompactProtocol.Factory(maxMessageSize, maxMessageSize));
        try {
            deserializer.deserialize(baseObject, serialized);
        } catch (TException e) {
            throw new IOException("Error deserializing thrift object " + baseObject, e);
        }
        return baseObject;
    }

}