gerrit.onap Code Review - policy/common.git/blob

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * ONAP
   4  * ================================================================================
   5  * Copyright (C) 2017-2019, 2021 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.onap.policy.common.endpoints.http.client;
  22
  23 import java.security.KeyManagementException;
  24 import java.security.NoSuchAlgorithmException;
  25 import java.util.ArrayList;
  26 import java.util.HashMap;
  27 import java.util.List;
  28 import java.util.Properties;
  29 import org.apache.commons.lang3.StringUtils;
  30 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
  31 import org.onap.policy.common.endpoints.http.client.internal.JerseyClient;
  32 import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
  33 import org.onap.policy.common.endpoints.utils.PropertyUtils;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 /**
  38  * HTTP client factory implementation indexed by name.
  39  */
  40 class IndexedHttpClientFactory implements HttpClientFactory {
  41
  42     /**
  43      * Logger.
  44      */
  45     private static Logger logger = LoggerFactory.getLogger(IndexedHttpClientFactory.class);
  46
  47     protected HashMap<String, HttpClient> clients = new HashMap<>();
  48
  49     @Override
  50     public synchronized HttpClient build(BusTopicParams busTopicParams) throws HttpClientConfigException {
  51         if (clients.containsKey(busTopicParams.getClientName())) {
  52             return clients.get(busTopicParams.getClientName());
  53         }
  54
  55         JerseyClient client;
  56         try {
  57             client = new JerseyClient(busTopicParams);
  58         } catch (KeyManagementException | NoSuchAlgorithmException | ClassNotFoundException e) {
  59             throw new HttpClientConfigException(e);
  60         }
  61
  62         if (busTopicParams.isManaged()) {
  63             clients.put(busTopicParams.getClientName(), client);
  64         }
  65
  66         return client;
  67     }
  68
  69     @Override
  70     public synchronized List<HttpClient> build(Properties properties) throws HttpClientConfigException {
  71         ArrayList<HttpClient> clientList = new ArrayList<>();
  72
  73         String clientNames = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES);
  74         if (StringUtils.isBlank(clientNames)) {
  75             return clientList;
  76         }
  77
  78         for (String clientName : clientNames.split("\\s*,\\s*")) {
  79             addClient(clientList, clientName, properties);
  80         }
  81
  82         return clientList;
  83     }
  84
  85     private void addClient(ArrayList<HttpClient> clientList, String clientName, Properties properties) {
  86         String clientPrefix = PolicyEndPointProperties.PROPERTY_HTTP_CLIENT_SERVICES + "." + clientName;
  87
  88         PropertyUtils props = new PropertyUtils(properties, clientPrefix,
  89             (name, value, ex) ->
  90                 logger.warn("{}: {} {} is in invalid format for http client {} ", this, name, value, clientName));
  91
  92         int port = props.getInteger(PolicyEndPointProperties.PROPERTY_HTTP_PORT_SUFFIX, -1);
  93         if (port < 0) {
  94             logger.warn("No HTTP port for client in {}", clientName);
  95             return;
  96         }
  97
  98         try {
  99             HttpClient client = this.build(BusTopicParams.builder()
 100                 .clientName(clientName)
 101                 .useHttps(props.getBoolean(PolicyEndPointProperties.PROPERTY_HTTP_HTTPS_SUFFIX, false))
 102                 .allowSelfSignedCerts(
 103                     props.getBoolean(PolicyEndPointProperties.PROPERTY_ALLOW_SELF_SIGNED_CERTIFICATES_SUFFIX, false))
 104                 .hostname(props.getString(PolicyEndPointProperties.PROPERTY_HTTP_HOST_SUFFIX, null))
 105                 .port(port)
 106                 .basePath(props.getString(PolicyEndPointProperties.PROPERTY_HTTP_URL_SUFFIX, null))
 107                 .userName(props.getString(PolicyEndPointProperties.PROPERTY_HTTP_AUTH_USERNAME_SUFFIX,
 108                                 null))
 109                 .password(props.getString(PolicyEndPointProperties.PROPERTY_HTTP_AUTH_PASSWORD_SUFFIX,
 110                                 null))
 111                 .managed(props.getBoolean(PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX, true))
 112                 .serializationProvider(props.getString(
 113                                 PolicyEndPointProperties.PROPERTY_HTTP_SERIALIZATION_PROVIDER, null))
 114                 .build());
 115             clientList.add(client);
 116         } catch (Exception e) {
 117             logger.error("http-client-factory: cannot build client {}", clientName, e);
 118         }
 119     }
 120
 121     @Override
 122     public synchronized HttpClient get(String name) {
 123         if (clients.containsKey(name)) {
 124             return clients.get(name);
 125         }
 126
 127         throw new IllegalArgumentException("Http Client " + name + " not found");
 128     }
 129
 130     @Override
 131     public synchronized List<HttpClient> inventory() {
 132         return new ArrayList<>(this.clients.values());
 133     }
 134
 135     @Override
 136     public synchronized void destroy(String name) {
 137         if (!clients.containsKey(name)) {
 138             return;
 139         }
 140
 141         HttpClient client = clients.remove(name);
 142         try {
 143             client.shutdown();
 144         } catch (IllegalStateException e) {
 145             logger.error("http-client-factory: cannot shutdown client {}", client, e);
 146         }
 147     }
 148
 149     @Override
 150     public void destroy() {
 151         List<HttpClient> clientsInventory = this.inventory();
 152         for (HttpClient client : clientsInventory) {
 153             client.shutdown();
 154         }
 155
 156         synchronized (this) {
 157             this.clients.clear();
 158         }
 159     }
 160
 161 }