/*
* Copyright © 2014 Cask Data, 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 co.cask.cdap.internal.app;
import co.cask.cdap.api.service.ServiceSpecification;
import co.cask.cdap.internal.service.DefaultServiceSpecification;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonSerializationContext;
import org.apache.twill.api.TwillSpecification;
import org.apache.twill.internal.json.TwillSpecificationAdapter;
import java.lang.reflect.Type;
/**
* Codec to serialize and serialize {@link ServiceSpecification}
*/
public class ServiceSpecificationCodec extends AbstractSpecificationCodec<ServiceSpecification> {
private final TwillSpecificationAdapter adapter;
public ServiceSpecificationCodec() {
adapter = TwillSpecificationAdapter.create();
}
@Override
public ServiceSpecification deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
throws JsonParseException {
JsonObject jsonObj = (JsonObject) json;
String className = jsonObj.get("classname").getAsString();
TwillSpecification spec = adapter.fromJson(jsonObj.get("spec").getAsString());
return new DefaultServiceSpecification(className, spec);
}
@Override
public JsonElement serialize(ServiceSpecification spec, Type typeOfSrc, JsonSerializationContext context) {
JsonObject object = new JsonObject();
object.addProperty("spec", adapter.toJson(spec));
object.addProperty("classname", spec.getClassName());
return object;
}
}