co.cask.cdap.proto.codec.BasicThrowableCodec.java Source code

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Here is the source code for co.cask.cdap.proto.codec.BasicThrowableCodec.java

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/*
 * Copyright  2016 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.proto.codec;

import co.cask.cdap.proto.BasicThrowable;
import com.google.gson.JsonArray;
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 java.lang.reflect.Type;

/**
 * Codec for {@link BasicThrowable}.
 */
public final class BasicThrowableCodec extends AbstractSpecificationCodec<BasicThrowable> {

    @Override
    public JsonElement serialize(BasicThrowable src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject json = new JsonObject();
        json.addProperty("className", src.getClassName());
        json.addProperty("message", src.getMessage());
        json.add("stackTraces", context.serialize(src.getStackTraces(), StackTraceElement[].class));
        json.add("cause", context.serialize(src.getCause(), BasicThrowable.class));
        return json;
    }

    @Override
    public BasicThrowable deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        JsonObject jsonObj = json.getAsJsonObject();
        String className = jsonObj.get("className").getAsString();
        String message = jsonObj.get("message").getAsString();
        JsonArray stackTraces = jsonObj.get("stackTraces").getAsJsonArray();
        StackTraceElement[] stackTraceElements = context.deserialize(stackTraces, StackTraceElement[].class);
        JsonElement cause = jsonObj.get("cause");
        BasicThrowable basicThrowable = null;
        if (cause != null) {
            basicThrowable = context.deserialize(cause, BasicThrowable.class);
        }
        return new BasicThrowable(className, message, stackTraceElements, basicThrowable);
    }
}