content: /**
   * 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.util;
  
  import com.eatthepath.pushy.apns.ApnsClientBuilder;
  import org.jboss.aerogear.unifiedpush.message.HealthNetworkService;
  import org.jboss.aerogear.unifiedpush.message.sender.fcm.ConfigurableFCMSender;
  import org.jboss.aerogear.unifiedpush.service.impl.health.HealthDetails;
  import org.jboss.aerogear.unifiedpush.service.impl.health.Ping;
  import org.jboss.aerogear.unifiedpush.service.impl.health.PushNetwork;
  import org.jboss.aerogear.unifiedpush.service.impl.health.Status;
  
  import javax.ejb.AsyncResult;
  import javax.ejb.Asynchronous;
  import javax.ejb.Stateless;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  import java.util.concurrent.Future;
  
  import static org.jboss.aerogear.unifiedpush.message.sender.apns.PushyApnsSender.CUSTOM_AEROGEAR_APNS_PUSH_HOST;
  import static org.jboss.aerogear.unifiedpush.message.sender.apns.PushyApnsSender.CUSTOM_AEROGEAR_APNS_PUSH_PORT;
  import static org.jboss.aerogear.unifiedpush.system.ConfigurationUtils.tryGetGlobalIntegerProperty;
  import static org.jboss.aerogear.unifiedpush.system.ConfigurationUtils.tryGetGlobalProperty;
  
  /**
   * Checks the health of the push networks.
   */
  @Stateless
  public class HealthNetworkServiceImpl implements HealthNetworkService {
      private static final String customAerogearApnsPushHost = tryGetGlobalProperty(CUSTOM_AEROGEAR_APNS_PUSH_HOST);
      private static final Integer customAerogearApnsPushPort = tryGetGlobalIntegerProperty(CUSTOM_AEROGEAR_APNS_PUSH_PORT);
  
      private static final String FCM_SEND_ENDPOINT = ConfigurableFCMSender.FCM_ENDPOINT_HOST.substring("https://".length(), ConfigurableFCMSender.FCM_ENDPOINT_HOST.indexOf('/', "https://".length()));
      public static final String WNS_SEND_ENDPOINT = "db3.notify.windows.com";
      private static final List<PushNetwork> PUSH_NETWORKS = new ArrayList<>(Arrays.asList(
              new PushNetwork[]{
                      new PushNetwork("Firebase Cloud Messaging", FCM_SEND_ENDPOINT, 443),
                      new PushNetwork("Apple Push Network Sandbox", ApnsClientBuilder.DEVELOPMENT_APNS_HOST, ApnsClientBuilder.DEFAULT_APNS_PORT),
                      new PushNetwork("Apple Push Network Production", ApnsClientBuilder.PRODUCTION_APNS_HOST, ApnsClientBuilder.DEFAULT_APNS_PORT),
                      new PushNetwork("Windows Push Network", WNS_SEND_ENDPOINT, 443)
              }
      ));
  
      static {
          if (customAerogearApnsPushHost != null) {
              final int port = customAerogearApnsPushPort != null ? customAerogearApnsPushPort : ApnsClientBuilder.DEFAULT_APNS_PORT;
              PUSH_NETWORKS.add(new PushNetwork("APNs Proxy host", customAerogearApnsPushHost, port));
          }
      }
  
      @Asynchronous
      @Override
      public Future<List<HealthDetails>> networkStatus() {
          final List<HealthDetails> results = new ArrayList<>(PUSH_NETWORKS.size());
  
          PUSH_NETWORKS.forEach(pushNetwork -> {
              HealthDetails details = new HealthDetails();
              details.start();
              details.setDescription(pushNetwork.getName());
              if (Ping.isReachable(pushNetwork.getHost(), pushNetwork.getPort())) {
                  details.setTestStatus(Status.OK);
                  details.setResult("online");
              } else {
                  details.setResult(String.format("Network not reachable '%s'", pushNetwork.getName()));
                  details.setTestStatus(Status.WARN);
              }
  
              results.add(details);
              details.stop();
          });
  
          return new AsyncResult<>(results);
      }
  }
  