com.optimizely.ab.config.parser.JacksonConfigParser.java Source code

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Here is the source code for com.optimizely.ab.config.parser.JacksonConfigParser.java

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/**
 *
 *    Copyright 2016, Optimizely
 *
 *    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.optimizely.ab.config.parser;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;

import com.optimizely.ab.config.Group;
import com.optimizely.ab.config.audience.Audience;
import com.optimizely.ab.config.ProjectConfig;

import java.io.IOException;

import javax.annotation.Nonnull;

/**
 * {@code Jackson}-based config parser implementation.
 */
final class JacksonConfigParser implements ConfigParser {

    @Override
    public ProjectConfig parseProjectConfig(@Nonnull String json) throws ConfigParseException {
        ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule();
        module.addDeserializer(Audience.class, new AudienceJacksonDeserializer());
        module.addDeserializer(Group.class, new GroupJacksonDeserializer());
        mapper.registerModule(module);

        try {
            return mapper.readValue(json, ProjectConfig.class);
        } catch (IOException e) {
            throw new ConfigParseException("unable to parse project config: " + json, e);
        }
    }
}