co.cask.cdap.internal.app.WorkflowSpecificationCodec.java Source code

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Here is the source code for co.cask.cdap.internal.app.WorkflowSpecificationCodec.java

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/*
 * 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.mapreduce.MapReduceSpecification;
import co.cask.cdap.api.schedule.Schedule;
import co.cask.cdap.api.workflow.WorkflowActionSpecification;
import co.cask.cdap.api.workflow.WorkflowSpecification;
import co.cask.cdap.internal.workflow.DefaultWorkflowSpecification;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;

import java.lang.reflect.Type;
import java.util.List;
import java.util.Map;

/**
 *
 */
final class WorkflowSpecificationCodec extends AbstractSpecificationCodec<WorkflowSpecification> {

    @Override
    public JsonElement serialize(WorkflowSpecification src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject jsonObj = new JsonObject();

        jsonObj.add("className", new JsonPrimitive(src.getClassName()));
        jsonObj.add("name", new JsonPrimitive(src.getName()));
        jsonObj.add("description", new JsonPrimitive(src.getDescription()));
        jsonObj.add("actions", serializeList(src.getActions(), context, WorkflowActionSpecification.class));
        jsonObj.add("mapReduces", serializeMap(src.getMapReduce(), context, MapReduceSpecification.class));
        jsonObj.add("schedules", serializeList(src.getSchedules(), context, Schedule.class));

        return jsonObj;
    }

    @Override
    public WorkflowSpecification deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        JsonObject jsonObj = json.getAsJsonObject();

        String className = jsonObj.get("className").getAsString();
        String name = jsonObj.get("name").getAsString();
        String description = jsonObj.get("description").getAsString();
        List<WorkflowActionSpecification> actions = deserializeList(jsonObj.get("actions"), context,
                WorkflowActionSpecification.class);
        Map<String, MapReduceSpecification> mapReduces = deserializeMap(jsonObj.get("mapReduces"), context,
                MapReduceSpecification.class);

        List<Schedule> schedules = deserializeList(jsonObj.get("schedules"), context, Schedule.class);

        return new DefaultWorkflowSpecification(className, name, description, actions, mapReduces, schedules);
    }
}