org.jboss.aerogear.sync.server.gcm.GcmMessages.java Source code

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Here is the source code for org.jboss.aerogear.sync.server.gcm.GcmMessages.java

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/**
 * JBoss, Home of Professional Open Source
 * Copyright Red Hat, Inc., and individual contributors.
 *
 * 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 org.jboss.aerogear.sync.server.gcm;

import com.fasterxml.jackson.databind.JsonNode;
import org.jboss.aerogear.sync.diffmatchpatch.JsonMapper;
import org.json.simple.JSONValue;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

public final class GcmMessages {

    private GcmMessages() {
    }

    /**
     * Creates a JSON encoded GCM message.
     *
     * @param to RegistrationId of the target device (Required).
     * @param messageId Unique messageId for which CCS will send an "ack/nack" (Required).
     * @param payload Message content intended for the application. (Optional).
     * @return JSON encoded GCM message.
     */
    public static String createJsonMessage(String to, String messageId, String payload) {
        return createJsonMessage(to, messageId, payload, null, null, null);
    }

    /**
     * Creates a JSON encoded GCM message.
     *
     * @param to RegistrationId of the target device (Required).
     * @param messageId Unique messageId for which CCS will send an "ack/nack"
     * (Required).
     * @param payload Message content intended for the application. (Optional).
     * @param collapseKey GCM collapse_key parameter (Optional).
     * @param timeToLive GCM time_to_live parameter (Optional).
     * @param delayWhileIdle GCM delay_while_idle parameter (Optional).
     * @return JSON encoded GCM message.
     */
    public static String createJsonMessage(String to, String messageId, String payload, String collapseKey,
            Long timeToLive, Boolean delayWhileIdle) {
        Map<String, Object> message = new HashMap<String, Object>();
        message.put("to", to);
        if (collapseKey != null) {
            message.put("collapse_key", collapseKey);
        }
        if (timeToLive != null) {
            message.put("time_to_live", timeToLive);
        }
        if (delayWhileIdle != null && delayWhileIdle) {
            message.put("delay_while_idle", true);
        }
        message.put("message_id", messageId);
        message.put("data", payloadToMap(payload));
        return JSONValue.toJSONString(message);
    }

    private static Map<String, String> payloadToMap(String payload) {
        Map<String, String> data = new HashMap<String, String>();
        JsonNode payloadJson = JsonMapper.asJsonNode(payload);
        Iterator<Entry<String, JsonNode>> fields = payloadJson.fields();
        while (fields.hasNext()) {
            Map.Entry<String, JsonNode> field = fields.next();
            if (field.getValue().isValueNode()) {
                data.put(field.getKey(), field.getValue().asText());
            } else {
                data.put(field.getKey(), JsonMapper.toString(field.getValue()));
            }
        }
        return data;
    }

}