com.spotify.apollo.meta.JsonMetaSerializer.java Source code

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Here is the source code for com.spotify.apollo.meta.JsonMetaSerializer.java

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/*
 * -\-\-
 * Spotify Apollo API Implementations
 * --
 * Copyright (C) 2013 - 2015 Spotify AB
 * --
 * 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 com.spotify.apollo.meta;

import com.google.common.base.Throwables;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.spotify.apollo.Request;
import com.spotify.apollo.Payloads;
import com.spotify.apollo.Serializer;
import com.typesafe.config.ConfigValue;

import io.norberg.automatter.jackson.AutoMatterModule;
import okio.ByteString;

/**
 * Custom {@link Serializer} for serializing to json. Handles
 * {@link io.norberg.automatter.AutoMatter} and {@link ConfigValue} types.
 */
public class JsonMetaSerializer implements Serializer {

    private static final ObjectMapper MAPPER;
    private static final ObjectMapper OBJECT_MAPPER;

    static {
        final SimpleModule configModule = new SimpleModule();
        final SimpleModule configModuleWithOrigins = new SimpleModule();

        configModule.addSerializer(ConfigValue.class, new TypesafeConfigSerializer(false));
        configModuleWithOrigins.addSerializer(ConfigValue.class, new TypesafeConfigSerializer(true));

        MAPPER = new ObjectMapper().registerModule(new AutoMatterModule()).registerModule(configModule);

        OBJECT_MAPPER = new ObjectMapper().registerModule(new AutoMatterModule())
                .registerModule(configModuleWithOrigins);
    }

    @Override
    public Payload serialize(Request message, Object o) {
        final ObjectMapper usedMapper = message.parameter("origins").isPresent() ? OBJECT_MAPPER : MAPPER;

        try {
            return Payloads.create(ByteString.encodeUtf8(usedMapper.writeValueAsString(o)), "application/json");
        } catch (JsonProcessingException e) {
            throw Throwables.propagate(e);
        }
    }

}