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