/**
* 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.seyren.core.service.notification;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.inject.Inject;
import javax.inject.Named;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.HttpClientUtils;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicHeader;
import org.apache.http.message.BasicNameValuePair;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.seyren.core.domain.Alert;
import com.seyren.core.domain.AlertType;
import com.seyren.core.domain.Check;
import com.seyren.core.domain.Subscription;
import com.seyren.core.domain.SubscriptionType;
import com.seyren.core.exception.NotificationFailedException;
import com.seyren.core.util.config.SeyrenConfig;
@Named
public class TwilioNotificationService implements NotificationService {
private static final Logger LOGGER = LoggerFactory.getLogger(TwilioNotificationService.class);
private final SeyrenConfig seyrenConfig;
@Inject
public TwilioNotificationService(SeyrenConfig seyrenConfig) {
this.seyrenConfig = seyrenConfig;
}
@Override
public void sendNotification(Check check, Subscription subscription, List<Alert> alerts) throws NotificationFailedException {
String twilioUrl = StringUtils.trimToNull(seyrenConfig.getTwilioUrl());
if (twilioUrl == null) {
LOGGER.warn("Twilio URL needs to be set before sending notifications to Twilio");
return;
}
String body;
if (check.getState() == AlertType.ERROR) {
body = "ERROR Check "+check.getName()+" has exceeded its threshold.";
} else if (check.getState() == AlertType.OK) {
body = "OK Check "+check.getName()+" has been resolved.";
} else {
LOGGER.warn("Did not send notification to Twilio for check in state: {}", check.getState());
body = null;
}
List<NameValuePair> params=new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("To", subscription.getTarget()));
params.add(new BasicNameValuePair("From", seyrenConfig.getTwilioPhoneNumber()));
params.add(new BasicNameValuePair("Body", body));
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(twilioUrl + "/"+seyrenConfig.getTwilioAccountSid()+"/Messages");
try {
String credentials=seyrenConfig.getTwilioAccountSid()+":"+seyrenConfig.getTwilioAuthToken();
post.setHeader(new BasicHeader("Authorization", "Basic "+Base64.encodeBase64String(credentials.getBytes("UTF-8"))));
HttpEntity entity = new UrlEncodedFormEntity(params, "UTF-8");
post.setEntity(entity);
HttpResponse response=client.execute(post);
if(response.getStatusLine().getStatusCode()/100 != 2)
throw new IOException("API request failed: "+response.getStatusLine());
} catch (IOException e) {
throw new NotificationFailedException("Sending notification to Twilio at " + twilioUrl + " failed.", e);
} finally {
HttpClientUtils.closeQuietly(client);
}
}
@Override
public boolean canHandle(SubscriptionType subscriptionType) {
return subscriptionType == SubscriptionType.TWILIO;
}
}