reactor.io.codec.json.JacksonJsonCodec.java Source code

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Here is the source code for reactor.io.codec.json.JacksonJsonCodec.java

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/*
 * Copyright (c) 2011-2014 Pivotal Software, Inc.
 *
 *  Licensed 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 reactor.io.codec.json;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import reactor.fn.Consumer;
import reactor.fn.Function;
import reactor.io.codec.SerializationCodec;

import java.io.IOException;

/**
 * @author Jon Brisbin
 */
public class JacksonJsonCodec<IN, OUT> extends SerializationCodec<ObjectMapper, IN, OUT> {

    public JacksonJsonCodec() {
        this(new ObjectMapper());
    }

    public JacksonJsonCodec(ObjectMapper engine) {
        super(engine, true);
    }

    @Override
    protected Function<byte[], IN> deserializer(final ObjectMapper engine, final Class<IN> type,
            final Consumer<IN> next) {
        return new Function<byte[], IN>() {
            @Override
            public IN apply(byte[] bytes) {
                try {
                    IN o = engine.readValue(bytes, type);
                    if (null != next) {
                        next.accept(o);
                        return null;
                    } else {
                        return o;
                    }
                } catch (IOException e) {
                    throw new IllegalStateException(e.getMessage(), e);
                }
            }
        };
    }

    @Override
    protected Function<OUT, byte[]> serializer(final ObjectMapper engine) {
        return new Function<OUT, byte[]>() {
            @Override
            public byte[] apply(OUT o) {
                try {
                    return engine.writeValueAsBytes(o);
                } catch (JsonProcessingException e) {
                    throw new IllegalArgumentException(e.getMessage(), e);
                }
            }
        };
    }

}