org.jboss.aerogear.unifiedpush.service.util.FCMTopicManager Maven / Gradle / Ivy
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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.unifiedpush.service.util;
import org.jboss.aerogear.unifiedpush.api.AndroidVariant;
import org.jboss.aerogear.unifiedpush.api.Installation;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.Set;
/**
* Utility used for Android installations which need to be unsubscribed from topics
*/
public class FCMTopicManager {
private final Logger logger = LoggerFactory.getLogger(FCMTopicManager.class);
// Instance ID API URL
public static final String IID_URL = "https://iid.googleapis.com/iid/v1/";
private AndroidVariant variant;
public FCMTopicManager(AndroidVariant variant) {
this.variant = variant;
}
public Set getSubscribedCategories(Installation installation) {
String url = IID_URL + "info/" + installation.getDeviceToken() + "?details=true";
String deviceInfo;
try {
deviceInfo = get(url);
} catch (IOException e) {
logger.debug("Couldn't get list of subscribed topics from Instance ID service.");
return Collections.emptySet();
}
JSONParser parser = new JSONParser();
JSONObject info;
try {
info = (JSONObject) parser.parse(deviceInfo);
} catch (ParseException e) {
logger.debug("Couldn't parse list of subscribed topics from Instance ID service.");
return Collections.emptySet();
}
JSONObject rel = (JSONObject) info.get("rel");
if (rel == null){
logger.debug("Couldn't parse rel object Instance ID service.");
return Collections.emptySet();
}
JSONObject topics = (JSONObject) rel.get("topics");
return topics.keySet();
}
/**
* Unsubscribes device from single category(topic)
*
* @param installation Installation object containing correct variant property of AndroidVariant class
* @param categoryToUnsubscribe category(topic) that device should be unsubscribed from
*/
public void unsubscribe(Installation installation, String categoryToUnsubscribe) {
String url = "";
try {
url = IID_URL + installation.getDeviceToken() + "/rel/topics/" + URLEncoder.encode(categoryToUnsubscribe, StandardCharsets.UTF_8.toString());
} catch (UnsupportedEncodingException e1) {
//
}
try {
delete(url);
} catch (IOException e) {
logger.debug("Unregistering device from topic was unsuccessfull");
}
}
/**
* Sends DELETE HTTP request to provided URL. Request is authorized using Google API key.
*
* @param urlS target URL string
*/
private int delete(String urlS) throws IOException {
URL url = new URL(urlS);
HttpURLConnection conn = prepareAuthorizedConnection(url);
conn.setRequestMethod("DELETE");
conn.connect();
return conn.getResponseCode();
}
/**
* Sends GET HTTP request to provided URL. Request is authorized using Google API key.
*
* @param urlS target URL string
*/
private String get(String urlS) throws IOException {
URL url = new URL(urlS);
HttpURLConnection conn = prepareAuthorizedConnection(url);
conn.setRequestMethod("GET");
// Read response
StringBuilder result = new StringBuilder();
try (BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()))) {
String line;
while ((line = rd.readLine()) != null) {
result.append(line);
}
}
return result.toString();
}
private HttpURLConnection prepareAuthorizedConnection(URL url) throws IOException {
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded" );
conn.setRequestProperty("Authorization", "key=" + variant.getGoogleKey());
return conn;
}
}
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