org.apache.reef.runtime.common.utils.DefaultExceptionCodec.java Source code

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Here is the source code for org.apache.reef.runtime.common.utils.DefaultExceptionCodec.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.reef.runtime.common.utils;

import org.apache.commons.lang.SerializationException;
import org.apache.commons.lang.SerializationUtils;
import org.apache.reef.annotations.audience.Private;
import org.apache.reef.util.Optional;

import javax.inject.Inject;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Default implementation of ExceptionCodec that uses Java serialization as its implementation.
 */
@Private
final class DefaultExceptionCodec implements ExceptionCodec {
    private static final Logger LOG = Logger.getLogger(DefaultExceptionCodec.class.getName());

    @Inject
    DefaultExceptionCodec() {
    }

    @Override
    public Optional<Throwable> fromBytes(final byte[] bytes) {
        try {
            return Optional.<Throwable>of((Throwable) SerializationUtils.deserialize(bytes));
        } catch (SerializationException | IllegalArgumentException e) {
            LOG.log(Level.FINE, "Unable to deserialize a Throwable.", e);
            return Optional.empty();
        }
    }

    @Override
    public Optional<Throwable> fromBytes(final Optional<byte[]> bytes) {
        if (bytes.isPresent()) {
            return this.fromBytes(bytes.get());
        } else {
            return Optional.empty();
        }
    }

    @Override
    public byte[] toBytes(final Throwable throwable) {
        return SerializationUtils.serialize(throwable);
    }
}