common-app-api/src/main/java/org/openecomp/sdc/fe/monitoring/FeMonitoringService.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.sdc.fe.monitoring;
  22
  23 import com.google.gson.Gson;
  24 import com.google.gson.GsonBuilder;
  25 import org.apache.http.HttpEntity;
  26 import org.apache.http.HttpStatus;
  27 import org.apache.http.entity.ContentType;
  28 import org.apache.http.entity.StringEntity;
  29 import org.openecomp.sdc.common.api.Constants;
  30 import org.openecomp.sdc.common.http.client.api.HttpRequest;
  31 import org.openecomp.sdc.common.http.client.api.HttpResponse;
  32 import org.openecomp.sdc.common.http.config.HttpClientConfig;
  33 import org.openecomp.sdc.common.http.config.Timeouts;
  34 import org.openecomp.sdc.common.monitoring.MonitoringEvent;
  35 import org.openecomp.sdc.common.monitoring.MonitoringMetricsFetcher;
  36 import org.openecomp.sdc.fe.config.Configuration;
  37 import org.openecomp.sdc.fe.config.ConfigurationManager;
  38 import org.openecomp.sdc.common.log.wrappers.Logger;
  39
  40 import javax.servlet.ServletContext;
  41 import java.util.concurrent.Executors;
  42 import java.util.concurrent.ScheduledExecutorService;
  43 import java.util.concurrent.ThreadFactory;
  44 import java.util.concurrent.TimeUnit;
  45
  46 public class FeMonitoringService {
  47
  48         private static final String URL = "%s://%s:%s/sdc2/rest/monitoring";
  49     private static Logger monitoringLogger = Logger.getLogger("asdc.fe.monitoring.service");
  50     private static Logger log = Logger.getLogger(FeMonitoringService.class.getName());
  51         private static Gson gson = new GsonBuilder().setPrettyPrinting().create();
  52
  53         private class MonitoringScheduledTask implements Runnable {
  54                 @Override
  55                 public void run() {
  56                         monitoringLogger.trace("Executing FE Monitoring Task - Start");
  57                         MonitoringEvent monitoringMetrics = MonitoringMetricsFetcher.getInstance().getMonitoringMetrics();
  58                         processMonitoringEvent(monitoringMetrics);
  59                         monitoringLogger.trace("Executing FE Monitoring Task - Status = {}", monitoringMetrics.toString());
  60                 }
  61         }
  62
  63         /**
  64          * This executor will execute the Monitoring task.
  65          */
  66         ScheduledExecutorService monitoringExecutor = Executors.newSingleThreadScheduledExecutor(new ThreadFactory() {
  67                 @Override
  68                 public Thread newThread(Runnable r) {
  69                         return new Thread(r, "FE-Monitoring-Thread");
  70                 }
  71         });
  72         private ServletContext context;
  73
  74         public FeMonitoringService(ServletContext context) {
  75                 this.context = context;
  76         }
  77
  78         public void start(int interval) {
  79                 Configuration config = ((ConfigurationManager) context.getAttribute(Constants.CONFIGURATION_MANAGER_ATTR))
  80                                 .getConfiguration();
  81                 if (config.getSystemMonitoring().getEnabled()) {
  82                         log.info("FE monitoring service enabled, interval is {} seconds", interval);
  83                         this.monitoringExecutor.scheduleAtFixedRate(new MonitoringScheduledTask(), 0, interval, TimeUnit.SECONDS);
  84                 } else {
  85                         log.info("FE monitoring service is disabled");
  86                 }
  87         }
  88
  89         private void processMonitoringEvent(MonitoringEvent monitoringMetrics) {
  90                 try {
  91                         Configuration config = ((ConfigurationManager) context.getAttribute(Constants.CONFIGURATION_MANAGER_ATTR))
  92                                         .getConfiguration();
  93                         String redirectedUrl = String.format(URL, config.getBeProtocol(), config.getBeHost(),
  94                                 Constants.HTTPS.equals(config.getBeProtocol()) ? config.getBeSslPort() : config.getBeHttpPort());
  95
  96                         int timeout = 3000;
  97                         String monitoringMetricsJson = gson.toJson(monitoringMetrics);
  98                         HttpEntity myEntity = new StringEntity(monitoringMetricsJson, ContentType.APPLICATION_JSON);
  99                         HttpResponse<String> resposne = HttpRequest.post(redirectedUrl, myEntity, new HttpClientConfig(new Timeouts(timeout, timeout)));
 100             int beResponseStatus = resposne.getStatusCode();
 101             if (beResponseStatus != HttpStatus.SC_OK) {
 102                 monitoringLogger.error("Unexpected HTTP response from BE : {}", beResponseStatus);
 103             }
 104                 } catch (Exception e) {
 105                     monitoringLogger.error("Monitoring BE failed with exception ", e);
 106                 }
 107         }
 108 }