org.openmastery.publisher.config.CustomValueTypeResolver.java Source code

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Here is the source code for org.openmastery.publisher.config.CustomValueTypeResolver.java

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/**
 * Copyright 2017 New Iron Group, Inc.
 *
 * Licensed under the GNU GENERAL PUBLIC LICENSE, Version 3 (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.gnu.org/licenses/gpl-3.0.en.html
 *
 * 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.openmastery.publisher.config;

import com.bancvue.rest.config.StandardObjectMapperFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;
import org.openmastery.publisher.api.metrics.CapacityDistribution;
import org.openmastery.publisher.api.metrics.DurationInSeconds;

import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;
import java.io.IOException;

@Provider
public class CustomValueTypeResolver implements ContextResolver<ObjectMapper> {

    private static final ObjectMapper mapper;

    static {
        mapper = new StandardObjectMapperFactory().createObjectMapper();
        mapper.registerModule(createCustomMetricValueModule());
    }

    private static SimpleModule createCustomMetricValueModule() {

        SimpleModule module = new SimpleModule();
        module.addSerializer(DurationInSeconds.class,
                new StdSerializer<DurationInSeconds>(DurationInSeconds.class) {
                    @Override
                    public void serialize(DurationInSeconds value, JsonGenerator jgen, SerializerProvider provider)
                            throws IOException {
                        if (value == null) {
                            jgen.writeNull();
                        } else {
                            jgen.writeNumber(value.getDurationInSeconds());
                        }

                    }
                });

        module.addSerializer(CapacityDistribution.class,
                new StdSerializer<CapacityDistribution>(CapacityDistribution.class) {
                    @Override
                    public void serialize(CapacityDistribution value, JsonGenerator jgen,
                            SerializerProvider provider) throws IOException {
                        if (value == null) {
                            jgen.writeNull();
                        } else {
                            jgen.writeObject(value.getCapacityDistributionByType());
                        }

                    }
                });
        return module;
    }

    @Override
    public ObjectMapper getContext(Class<?> type) {
        return mapper;
    }

}