com.clover.cfp.examples.objects.PayloadMessage.java Source code

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Here is the source code for com.clover.cfp.examples.objects.PayloadMessage.java

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/*
 * Copyright (C) 2018 Clover Network, 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 com.clover.cfp.examples.objects;

import com.clover.remote.message.ByteArrayToBase64TypeAdapter;
import com.clover.remote.message.CloverJSONifiableTypeAdapter;
import com.clover.sdk.JSONifiable;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

public class PayloadMessage {
    public final String payloadClassName;
    public final MessageType messageType;
    private static final Gson GSON;

    static {
        GsonBuilder builder = new GsonBuilder();
        builder.registerTypeHierarchyAdapter(JSONifiable.class, new CloverJSONifiableTypeAdapter());
        builder.registerTypeHierarchyAdapter(byte[].class, new ByteArrayToBase64TypeAdapter());
        GSON = builder.create();
    }

    private static final JsonParser PARSER = new JsonParser();

    public PayloadMessage(String payloadClassName, MessageType messageType) {
        if (payloadClassName == null || payloadClassName.isEmpty()) {
            this.payloadClassName = "PayloadMessage";
        } else {
            this.payloadClassName = payloadClassName;
        }
        this.messageType = messageType;
    }

    public String toJsonString() {
        return GSON.toJson(this, this.getClass());
    }

    @Override
    public String toString() {
        return getClass().getSimpleName() + toJsonString();
    }

    public static PayloadMessage fromJsonString(String m) {
        JsonElement je = PARSER.parse(m);
        JsonObject jo = je.getAsJsonObject();
        String payloadClassName = jo.get("payloadClassName").getAsString();
        Class<? extends PayloadMessage> cls = null;
        try {
            cls = (Class<? extends PayloadMessage>) Class
                    .forName("com.clover.cfp.examples.objects." + payloadClassName);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }
        return GSON.fromJson(jo, cls);
    }

}