catalog-fe/src/main/java/org/openecomp/sdc/fe/listen/FEAppContextListener.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * SDC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * Modifications Copyright (c) 2019 Samsung
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.openecomp.sdc.fe.listen;
  23
  24 import java.security.KeyStoreException;
  25 import java.security.NoSuchAlgorithmException;
  26 import java.util.concurrent.ExecutorService;
  27 import java.util.concurrent.Executors;
  28
  29 import javax.net.ssl.SSLContext;
  30 import javax.net.ssl.SSLException;
  31 import javax.servlet.ServletContextEvent;
  32 import javax.servlet.ServletContextListener;
  33
  34 import org.apache.http.config.Registry;
  35 import org.apache.http.config.RegistryBuilder;
  36 import org.apache.http.conn.socket.ConnectionSocketFactory;
  37 import org.apache.http.conn.socket.PlainConnectionSocketFactory;
  38 import org.apache.http.conn.ssl.NoopHostnameVerifier;
  39 import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
  40 import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
  41 import org.apache.http.impl.client.CloseableHttpClient;
  42 import org.apache.http.impl.client.HttpClients;
  43 import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
  44 import org.apache.http.ssl.SSLContextBuilder;
  45 import org.openecomp.sdc.common.api.Constants;
  46 import org.openecomp.sdc.common.impl.ExternalConfiguration;
  47 import org.openecomp.sdc.common.listener.AppContextListener;
  48 import org.openecomp.sdc.fe.config.ConfigurationManager;
  49 import org.openecomp.sdc.fe.impl.PluginStatusBL;
  50 import org.openecomp.sdc.fe.monitoring.FeMonitoringService;
  51 import org.openecomp.sdc.fe.servlets.HealthCheckService;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54
  55 public class FEAppContextListener extends AppContextListener implements ServletContextListener {
  56
  57     private static final int HEALTH_CHECK_INTERVAL = 5;
  58     private static final int PROBE_INTERVAL = 15;
  59     private static Logger log = LoggerFactory.getLogger(FEAppContextListener.class.getName());
  60
  61     public void contextInitialized(ServletContextEvent context) {
  62
  63         super.contextInitialized(context);
  64
  65         ConfigurationManager configurationManager = new ConfigurationManager(
  66                 ExternalConfiguration.getConfigurationSource());
  67         log.debug("loading configuration from configDir:{} appName:{}", ExternalConfiguration.getConfigDir(),
  68                 ExternalConfiguration.getAppName());
  69         context.getServletContext().setAttribute(Constants.CONFIGURATION_MANAGER_ATTR, configurationManager);
  70
  71         try {
  72             PluginStatusBL pbl = new PluginStatusBL(buildRestClient());
  73             context.getServletContext().setAttribute(Constants.PLUGIN_BL_COMPONENT, pbl);
  74         } catch (SSLException e) {
  75             log.debug("ERROR: Build rest client failed because ", e);
  76             return;
  77         }
  78
  79         // Health Check service
  80         HealthCheckService hcs = new HealthCheckService(context.getServletContext());
  81         hcs.start(configurationManager.getConfiguration().getHealthCheckIntervalInSeconds(HEALTH_CHECK_INTERVAL));
  82         context.getServletContext().setAttribute(Constants.HEALTH_CHECK_SERVICE_ATTR, hcs);
  83
  84         // Monitoring service
  85         FeMonitoringService fms = new FeMonitoringService(context.getServletContext());
  86         fms.start(configurationManager.getConfiguration().getSystemMonitoring().getProbeIntervalInSeconds(PROBE_INTERVAL));
  87
  88         if (configurationManager.getConfiguration() == null) {
  89             log.debug("ERROR: configuration was not properly loaded");
  90             return;
  91         }
  92
  93         ExecutorService executorPool = Executors
  94                 .newFixedThreadPool(configurationManager.getConfiguration().getThreadpoolSize());
  95         context.getServletContext().setAttribute(Constants.THREAD_EXECUTOR_ATTR, executorPool);
  96
  97         log.debug("After executing {}", this.getClass());
  98     }
  99
 100     public void contextDestroyed(ServletContextEvent context) {
 101
 102         ExecutorService executorPool = (ExecutorService) context.getServletContext()
 103                 .getAttribute(Constants.THREAD_EXECUTOR_ATTR);
 104         if (executorPool != null) {
 105             executorPool.shutdown();
 106         }
 107
 108         super.contextDestroyed(context);
 109
 110     }
 111
 112     private CloseableHttpClient buildRestClient() throws SSLException {
 113         SSLContextBuilder builder = new SSLContextBuilder();
 114         try {
 115             builder.loadTrustMaterial(null, new TrustSelfSignedStrategy());
 116             SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
 117                 SSLContext.getDefault(), NoopHostnameVerifier.INSTANCE);
 118             Registry<ConnectionSocketFactory> registry =
 119                 RegistryBuilder.<ConnectionSocketFactory>create()
 120                     .register("http", new PlainConnectionSocketFactory()).register("https", sslsf)
 121                     .build();
 122             PoolingHttpClientConnectionManager cm =
 123                 new PoolingHttpClientConnectionManager(registry);
 124             return HttpClients.custom().setSSLSocketFactory(sslsf).setConnectionManager(cm).build();
 125         } catch (NoSuchAlgorithmException | KeyStoreException e) {
 126             throw new SSLException(e);
 127         }
 128     }
 129 }