common-app-api/src/main/java/org/openecomp/sdc/be/monitoring/BeMonitoringService.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.be.monitoring;
  22
  23 import java.util.concurrent.Executors;
  24 import java.util.concurrent.ScheduledExecutorService;
  25 import java.util.concurrent.ThreadFactory;
  26 import java.util.concurrent.TimeUnit;
  27
  28 import javax.servlet.ServletContext;
  29
  30 import org.apache.http.HttpEntity;
  31 import org.apache.http.HttpStatus;
  32 import org.apache.http.entity.ContentType;
  33 import org.apache.http.entity.StringEntity;
  34 import org.openecomp.sdc.be.config.Configuration;
  35 import org.openecomp.sdc.be.config.ConfigurationManager;
  36 import org.openecomp.sdc.common.api.Constants;
  37 import org.openecomp.sdc.common.http.client.api.HttpRequest;
  38 import org.openecomp.sdc.common.http.client.api.HttpResponse;
  39 import org.openecomp.sdc.common.http.config.HttpClientConfig;
  40 import org.openecomp.sdc.common.http.config.Timeouts;
  41 import org.openecomp.sdc.common.monitoring.MonitoringEvent;
  42 import org.openecomp.sdc.common.monitoring.MonitoringMetricsFetcher;
  43 import org.slf4j.Logger;
  44 import org.slf4j.LoggerFactory;
  45
  46 import com.google.gson.Gson;
  47 import com.google.gson.GsonBuilder;
  48
  49 public class BeMonitoringService {
  50
  51         private static final String URL = "%s://%s:%s/sdc2/rest/monitoring";
  52         private static Logger monitoringLogger = LoggerFactory.getLogger("asdc.be.monitoring.service");
  53         private static Logger log = LoggerFactory.getLogger(BeMonitoringService.class.getName());
  54         private static Gson gson = new GsonBuilder().setPrettyPrinting().create();
  55
  56         private class MonitoringScheduledTask implements Runnable {
  57                 @Override
  58                 public void run() {
  59                         monitoringLogger.trace("Executing BE Monitoring Task - Start");
  60                         MonitoringEvent monitoringMetrics = MonitoringMetricsFetcher.getInstance().getMonitoringMetrics();
  61                         processMonitoringEvent(monitoringMetrics);
  62                         monitoringLogger.trace("Executing BE Monitoring Task - Status = {}", monitoringMetrics.toString());
  63                 }
  64         }
  65
  66         /**
  67          * This executor will execute the Monitoring task.
  68          */
  69         ScheduledExecutorService monitoringExecutor = Executors.newSingleThreadScheduledExecutor(new ThreadFactory() {
  70                 @Override
  71                 public Thread newThread(Runnable r) {
  72                         return new Thread(r, "BE-Monitoring-Thread");
  73                 }
  74         });
  75         private ServletContext context;
  76
  77         public BeMonitoringService(ServletContext context) {
  78                 this.context = context;
  79         }
  80
  81         public void start(int interval) {
  82                 Configuration config = ((ConfigurationManager) context.getAttribute(Constants.CONFIGURATION_MANAGER_ATTR))
  83                                 .getConfiguration();
  84                 if (config.getSystemMonitoring().getEnabled()) {
  85                         log.info("BE monitoring service is enabled, interval is {} seconds", interval);
  86                         this.monitoringExecutor.scheduleAtFixedRate(new MonitoringScheduledTask(), 0, interval, TimeUnit.SECONDS);
  87                 } else {
  88                         log.info("BE monitoring service is disabled");
  89                 }
  90         }
  91
  92         private void processMonitoringEvent(MonitoringEvent monitoringMetrics) {
  93                 try {
  94                         Configuration config = ((ConfigurationManager) context.getAttribute(Constants.CONFIGURATION_MANAGER_ATTR))
  95                                         .getConfiguration();
  96                         String redirectedUrl = String.format(URL, config.getBeProtocol(), config.getBeFqdn(),
  97                                         config.getBeHttpPort());
  98
  99                         final int timeout = 3000;
 100                         String monitoringMetricsJson = gson.toJson(monitoringMetrics);
 101                         HttpEntity myEntity = new StringEntity(monitoringMetricsJson, ContentType.APPLICATION_JSON);
 102                         HttpResponse<String> httpResponse = HttpRequest.post(redirectedUrl, myEntity, new HttpClientConfig(new Timeouts(timeout, timeout)));
 103             int beResponseStatus = httpResponse.getStatusCode();
 104             if (beResponseStatus != HttpStatus.SC_OK) {
 105                 monitoringLogger.error("Unexpected HTTP response from BE : {}", beResponseStatus);
 106             }
 107                 } catch (Exception e) {
 108                         monitoringLogger.error("Monitoring BE failed with exception ", e);
 109                 }
 110         }
 111 }