/**
* 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.message.sender;
import org.jboss.aerogear.unifiedpush.api.Variant;
import org.jboss.aerogear.unifiedpush.api.VariantType;
import org.jboss.aerogear.unifiedpush.message.UnifiedPushMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.core.Response.Status;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Collection;
@SenderType(VariantType.SIMPLE_PUSH)
public class SimplePushNotificationSender implements PushNotificationSender {
private final Logger logger = LoggerFactory.getLogger(SimplePushNotificationSender.class);
/*
* Sends SimplePush notifications to all connected clients, that are represented by
* the {@link Collection} of channelIDs, for the given SimplePush network.
*/
@Override
public void sendPushMessage(Variant variant, Collection<String> tokens, UnifiedPushMessage pushMessage, String pushMessageInformationId, NotificationSenderCallback callback) {
// no need to send empty list
if (tokens.isEmpty()) {
return;
}
String payload = pushMessage.getMessage().getSimplePush();
// if there was no payload provided, but we have clients, we send an empty string
// the SimplePush Server accepts that and will use the timestamp
if (payload == null) {
payload = "";
}
// iterate over all the given channels, if there are channels:
boolean hasWarning = false;
for (String clientURL : tokens) {
HttpURLConnection conn = null;
try {
// PUT the version payload to the SimplePushServer
logger.trace("Sending out SimplePush payload: {}", payload);
conn = put(clientURL, payload);
int simplePushStatusCode = conn.getResponseCode();
logger.trace("SimplePush Status: {}", simplePushStatusCode);
if (Status.OK.getStatusCode() != simplePushStatusCode) {
hasWarning = true;
}
} catch (Exception e) {
// any error while performing the PUT
logger.error("Error delivering SimplePush payload", e);
hasWarning = true;
} finally {
// tear down
if (conn != null) {
conn.disconnect();
}
}
}
logger.info(String.format("Sent push notification to SimplePush Server for %d tokens",tokens.size()));
if (hasWarning) {
callback.onError("Error delivering SimplePush payload");
}
else {
callback.onSuccess();
}
}
/*
* Returns HttpURLConnection that 'puts' the given body to the given URL.
*/
protected HttpURLConnection put(String url, String body) throws IOException {
if (url == null) {
throw new IllegalArgumentException("SimplePush Update URL cannot be null");
}
byte[] bytes = body.getBytes(StandardCharsets.UTF_8);
HttpURLConnection conn = getConnection(url);
conn.setDoOutput(true);
conn.setUseCaches(false);
conn.setFixedLengthStreamingMode(bytes.length);
conn.setRequestProperty("Content-Length", Integer.toString(bytes.length));
conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
conn.setRequestProperty("Accept", "*/*");
conn.setRequestMethod("PUT");
try (OutputStream out = conn.getOutputStream()) {
out.write(bytes);
out.flush();
}
return conn;
}
/*
* Convenience method to open/establish a HttpURLConnection.
*/
protected HttpURLConnection getConnection(String url) throws IOException {
return (HttpURLConnection) new URL(url).openConnection();
}
}