JsonConfiguration.java

package nl.knaw.huygens.alexandria.concordion;

/*
 * #%L
 * alexandria-acceptance-tests
 * =======
 * Copyright (C) 2015 - 2017 Huygens ING (KNAW)
 * =======
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;

import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;

import nl.knaw.huygens.Log;

@Provider
public class JsonConfiguration implements ContextResolver<ObjectMapper> {

  private final ObjectMapper defaultObjectMapper;

  public JsonConfiguration() {
    defaultObjectMapper = createDefaultMapper();
  }

  @Override
  public ObjectMapper getContext(final Class<?> type) {
    Log.trace("Returning Jackson ObjectMapper for type: {}", type);
    return defaultObjectMapper;
  }

  private static ObjectMapper createDefaultMapper() {
    final ObjectMapper mapper = new ObjectMapper();
    Log.debug("Configuring Jackson ObjectMapper: [" + mapper + "]");

    mapper.enable(SerializationFeature.INDENT_OUTPUT);
    mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
    // mapper.disable(SerializationFeature.WRITE_DURATIONS_AS_TIMESTAMPS);

    mapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
    mapper.registerModule(new Jdk8Module());

    return mapper;
  }
}