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

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * ONAP Policy Engine - Common Modules
   4  * ================================================================================
   5  * Copyright (C) 2017-2019 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.event.comm.bus;
  22
  23 import java.util.ArrayList;
  24 import java.util.Arrays;
  25 import java.util.HashMap;
  26 import java.util.List;
  27 import java.util.Properties;
  28
  29 import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
  30 import org.onap.policy.common.endpoints.event.comm.bus.internal.InlineUebTopicSink;
  31 import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 /**
  36  * Factory of UEB Reader Topics indexed by topic name.
  37  */
  38 class IndexedUebTopicSinkFactory implements UebTopicSinkFactory {
  39     private static final String MISSING_TOPIC = "A topic must be provided";
  40
  41     /**
  42      * Logger.
  43      */
  44     private static Logger logger = LoggerFactory.getLogger(IndexedUebTopicSinkFactory.class);
  45
  46     /**
  47      * UEB Topic Name Index.
  48      */
  49     protected HashMap<String, UebTopicSink> uebTopicSinks = new HashMap<>();
  50
  51     @Override
  52     public UebTopicSink build(BusTopicParams busTopicParams) {
  53
  54         if (busTopicParams.getServers() == null || busTopicParams.getServers().isEmpty()) {
  55             throw new IllegalArgumentException("UEB Server(s) must be provided");
  56         }
  57
  58         if (busTopicParams.getTopic() == null || busTopicParams.getTopic().isEmpty()) {
  59             throw new IllegalArgumentException(MISSING_TOPIC);
  60         }
  61
  62         synchronized (this) {
  63             if (uebTopicSinks.containsKey(busTopicParams.getTopic())) {
  64                 return uebTopicSinks.get(busTopicParams.getTopic());
  65             }
  66
  67             UebTopicSink uebTopicWriter = makeSink(busTopicParams);
  68
  69             if (busTopicParams.isManaged()) {
  70                 uebTopicSinks.put(busTopicParams.getTopic(), uebTopicWriter);
  71             }
  72
  73             return uebTopicWriter;
  74         }
  75     }
  76
  77
  78     @Override
  79     public UebTopicSink build(List<String> servers, String topic) {
  80         return this.build(BusTopicParams.builder()
  81                 .servers(servers)
  82                 .topic(topic)
  83                 .managed(true)
  84                 .useHttps(false)
  85                 .allowSelfSignedCerts(false)
  86                 .build());
  87     }
  88
  89
  90     @Override
  91     public List<UebTopicSink> build(Properties properties) {
  92
  93         String writeTopics = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS);
  94         if (writeTopics == null || writeTopics.isEmpty()) {
  95             logger.info("{}: no topic for UEB Sink", this);
  96             return new ArrayList<>();
  97         }
  98
  99         List<String> writeTopicList = new ArrayList<>(Arrays.asList(writeTopics.split("\\s*,\\s*")));
 100         List<UebTopicSink> newUebTopicSinks = new ArrayList<>();
 101         synchronized (this) {
 102             for (String topic : writeTopicList) {
 103                 if (this.uebTopicSinks.containsKey(topic)) {
 104                     newUebTopicSinks.add(this.uebTopicSinks.get(topic));
 105                     continue;
 106                 }
 107
 108                 String servers = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 109                         + PolicyEndPointProperties.PROPERTY_TOPIC_SERVERS_SUFFIX);
 110                 if (servers == null || servers.isEmpty()) {
 111                     logger.error("{}: no UEB servers configured for sink {}", this, topic);
 112                     continue;
 113                 }
 114
 115                 final List<String> serverList = new ArrayList<>(Arrays.asList(servers.split("\\s*,\\s*")));
 116
 117                 final String apiKey = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS
 118                                 + "." + topic + PolicyEndPointProperties.PROPERTY_TOPIC_API_KEY_SUFFIX);
 119                 final String apiSecret = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS
 120                                 + "." + topic + PolicyEndPointProperties.PROPERTY_TOPIC_API_SECRET_SUFFIX);
 121                 final String partitionKey = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS
 122                                 + "." + topic + PolicyEndPointProperties.PROPERTY_TOPIC_SINK_PARTITION_KEY_SUFFIX);
 123
 124                 String managedString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "."
 125                         + topic + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX);
 126                 boolean managed = true;
 127                 if (managedString != null && !managedString.isEmpty()) {
 128                     managed = Boolean.parseBoolean(managedString);
 129                 }
 130
 131                 String useHttpsString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "."
 132                         + topic + PolicyEndPointProperties.PROPERTY_HTTP_HTTPS_SUFFIX);
 133
 134                 // default is to use HTTP if no https property exists
 135                 boolean useHttps = false;
 136                 if (useHttpsString != null && !useHttpsString.isEmpty()) {
 137                     useHttps = Boolean.parseBoolean(useHttpsString);
 138                 }
 139
 140
 141                 String allowSelfSignedCertsString =
 142                         properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 143                                 + PolicyEndPointProperties.PROPERTY_ALLOW_SELF_SIGNED_CERTIFICATES_SUFFIX);
 144
 145                 // default is to disallow self-signed certs
 146                 boolean allowSelfSignedCerts = false;
 147                 if (allowSelfSignedCertsString != null && !allowSelfSignedCertsString.isEmpty()) {
 148                     allowSelfSignedCerts = Boolean.parseBoolean(allowSelfSignedCertsString);
 149                 }
 150
 151                 UebTopicSink uebTopicWriter = this.build(BusTopicParams.builder()
 152                         .servers(serverList)
 153                         .topic(topic)
 154                         .apiKey(apiKey)
 155                         .apiSecret(apiSecret)
 156                         .partitionId(partitionKey)
 157                         .managed(managed)
 158                         .useHttps(useHttps)
 159                         .allowSelfSignedCerts(allowSelfSignedCerts)
 160                         .build());
 161                 newUebTopicSinks.add(uebTopicWriter);
 162             }
 163             return newUebTopicSinks;
 164         }
 165     }
 166
 167     @Override
 168     public void destroy(String topic) {
 169
 170         if (topic == null || topic.isEmpty()) {
 171             throw new IllegalArgumentException(MISSING_TOPIC);
 172         }
 173
 174         UebTopicSink uebTopicWriter;
 175         synchronized (this) {
 176             if (!uebTopicSinks.containsKey(topic)) {
 177                 return;
 178             }
 179
 180             uebTopicWriter = uebTopicSinks.remove(topic);
 181         }
 182
 183         uebTopicWriter.shutdown();
 184     }
 185
 186     @Override
 187     public void destroy() {
 188         List<UebTopicSink> writers = this.inventory();
 189         for (UebTopicSink writer : writers) {
 190             writer.shutdown();
 191         }
 192
 193         synchronized (this) {
 194             this.uebTopicSinks.clear();
 195         }
 196     }
 197
 198     @Override
 199     public UebTopicSink get(String topic) {
 200
 201         if (topic == null || topic.isEmpty()) {
 202             throw new IllegalArgumentException(MISSING_TOPIC);
 203         }
 204
 205         synchronized (this) {
 206             if (uebTopicSinks.containsKey(topic)) {
 207                 return uebTopicSinks.get(topic);
 208             } else {
 209                 throw new IllegalStateException("UebTopicSink for " + topic + " not found");
 210             }
 211         }
 212     }
 213
 214     @Override
 215     public synchronized List<UebTopicSink> inventory() {
 216         return new ArrayList<>(this.uebTopicSinks.values());
 217     }
 218
 219     /**
 220      * Makes a new sink.
 221      *
 222      * @param busTopicParams parameters to use to configure the sink
 223      * @return a new sink
 224      */
 225     protected UebTopicSink makeSink(BusTopicParams busTopicParams) {
 226         return new InlineUebTopicSink(busTopicParams);
 227     }
 228
 229
 230     @Override
 231     public String toString() {
 232         StringBuilder builder = new StringBuilder();
 233         builder.append("IndexedUebTopicSinkFactory []");
 234         return builder.toString();
 235     }
 236
 237 }