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

   1 /*
   2  * ============LICENSE_START=======================================================
   3  * policy-endpoints
   4  * ================================================================================
   5  * Copyright (C) 2017-2018 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.impl;
  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.UebTopicSink;
  30 import org.onap.policy.common.endpoints.event.comm.bus.UebTopicSinkFactory;
  31 import org.onap.policy.common.endpoints.event.comm.bus.internal.InlineUebTopicSink;
  32 import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
  33 import org.slf4j.Logger;
  34 import org.slf4j.LoggerFactory;
  35
  36 /**
  37  * Factory of UEB Reader Topics indexed by topic name
  38  */
  39 public class IndexedUebTopicSinkFactory implements UebTopicSinkFactory {
  40
  41     private static final IndexedUebTopicSinkFactory instance = new IndexedUebTopicSinkFactory();
  42
  43     private static final String MISSING_TOPIC = "A topic must be provided";
  44
  45     /**
  46      * Logger
  47      */
  48     private static Logger logger = LoggerFactory.getLogger(IndexedUebTopicSinkFactory.class);
  49
  50     /**
  51      * UEB Topic Name Index
  52      */
  53     protected HashMap<String, UebTopicSink> uebTopicSinks = new HashMap<>();
  54
  55     /**
  56      * Get the singleton instance.
  57      *
  58      * @return the instance
  59      */
  60     public static IndexedUebTopicSinkFactory getInstance() {
  61         return instance;
  62     }
  63
  64     private IndexedUebTopicSinkFactory() {}
  65
  66     @Override
  67     public UebTopicSink build(List<String> servers, String topic, String apiKey, String apiSecret, String partitionKey,
  68             boolean managed, boolean useHttps, boolean allowSelfSignedCerts) {
  69
  70         if (servers == null || servers.isEmpty()) {
  71             throw new IllegalArgumentException("UEB Server(s) must be provided");
  72         }
  73
  74         if (topic == null || topic.isEmpty()) {
  75             throw new IllegalArgumentException(MISSING_TOPIC);
  76         }
  77
  78         synchronized (this) {
  79             if (uebTopicSinks.containsKey(topic)) {
  80                 return uebTopicSinks.get(topic);
  81             }
  82
  83             UebTopicSink uebTopicWriter = new InlineUebTopicSink(servers, topic, apiKey, apiSecret, partitionKey,
  84                     useHttps, allowSelfSignedCerts);
  85
  86             if (managed) {
  87                 uebTopicSinks.put(topic, uebTopicWriter);
  88             }
  89
  90             return uebTopicWriter;
  91         }
  92     }
  93
  94
  95     @Override
  96     public UebTopicSink build(List<String> servers, String topic) {
  97         return this.build(servers, topic, null, null, null, true, false, false);
  98     }
  99
 100
 101     @Override
 102     public List<UebTopicSink> build(Properties properties) {
 103
 104         String writeTopics = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS);
 105         if (writeTopics == null || writeTopics.isEmpty()) {
 106             logger.info("{}: no topic for UEB Sink", this);
 107             return new ArrayList<>();
 108         }
 109
 110         List<String> writeTopicList = new ArrayList<>(Arrays.asList(writeTopics.split("\\s*,\\s*")));
 111         List<UebTopicSink> newUebTopicSinks = new ArrayList<>();
 112         synchronized (this) {
 113             for (String topic : writeTopicList) {
 114                 if (this.uebTopicSinks.containsKey(topic)) {
 115                     newUebTopicSinks.add(this.uebTopicSinks.get(topic));
 116                     continue;
 117                 }
 118
 119                 String servers = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 120                         + PolicyEndPointProperties.PROPERTY_TOPIC_SERVERS_SUFFIX);
 121                 if (servers == null || servers.isEmpty()) {
 122                     logger.error("{}: no UEB servers configured for sink {}", this, topic);
 123                     continue;
 124                 }
 125
 126                 List<String> serverList = new ArrayList<>(Arrays.asList(servers.split("\\s*,\\s*")));
 127
 128                 String apiKey = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 129                         + PolicyEndPointProperties.PROPERTY_TOPIC_API_KEY_SUFFIX);
 130                 String apiSecret = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 131                         + PolicyEndPointProperties.PROPERTY_TOPIC_API_SECRET_SUFFIX);
 132                 String partitionKey = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 133                         + PolicyEndPointProperties.PROPERTY_TOPIC_SINK_PARTITION_KEY_SUFFIX);
 134
 135                 String managedString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 136                         + PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX);
 137                 boolean managed = true;
 138                 if (managedString != null && !managedString.isEmpty()) {
 139                     managed = Boolean.parseBoolean(managedString);
 140                 }
 141
 142                 String useHttpsString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
 143                         + PolicyEndPointProperties.PROPERTY_HTTP_HTTPS_SUFFIX);
 144
 145                 // default is to use HTTP if no https property exists
 146                 boolean useHttps = false;
 147                 if (useHttpsString != null && !useHttpsString.isEmpty()) {
 148                     useHttps = Boolean.parseBoolean(useHttpsString);
 149                 }
 150
 151
 152                 String allowSelfSignedCertsString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS
 153                         + "." + topic + PolicyEndPointProperties.PROPERTY_ALLOW_SELF_SIGNED_CERTIFICATES_SUFFIX);
 154
 155                 // default is to disallow self-signed certs
 156                 boolean allowSelfSignedCerts = false;
 157                 if (allowSelfSignedCertsString != null && !allowSelfSignedCertsString.isEmpty()) {
 158                     allowSelfSignedCerts = Boolean.parseBoolean(allowSelfSignedCertsString);
 159                 }
 160
 161                 UebTopicSink uebTopicWriter = this.build(serverList, topic, apiKey, apiSecret, partitionKey, managed,
 162                         useHttps, allowSelfSignedCerts);
 163                 newUebTopicSinks.add(uebTopicWriter);
 164             }
 165             return newUebTopicSinks;
 166         }
 167     }
 168
 169     @Override
 170     public void destroy(String topic) {
 171
 172         if (topic == null || topic.isEmpty()) {
 173             throw new IllegalArgumentException(MISSING_TOPIC);
 174         }
 175
 176         UebTopicSink uebTopicWriter;
 177         synchronized (this) {
 178             if (!uebTopicSinks.containsKey(topic)) {
 179                 return;
 180             }
 181
 182             uebTopicWriter = uebTopicSinks.remove(topic);
 183         }
 184
 185         uebTopicWriter.shutdown();
 186     }
 187
 188     @Override
 189     public void destroy() {
 190         List<UebTopicSink> writers = this.inventory();
 191         for (UebTopicSink writer : writers) {
 192             writer.shutdown();
 193         }
 194
 195         synchronized (this) {
 196             this.uebTopicSinks.clear();
 197         }
 198     }
 199
 200     @Override
 201     public UebTopicSink get(String topic) {
 202
 203         if (topic == null || topic.isEmpty()) {
 204             throw new IllegalArgumentException(MISSING_TOPIC);
 205         }
 206
 207         synchronized (this) {
 208             if (uebTopicSinks.containsKey(topic)) {
 209                 return uebTopicSinks.get(topic);
 210             } else {
 211                 throw new IllegalStateException("UebTopicSink for " + topic + " not found");
 212             }
 213         }
 214     }
 215
 216     @Override
 217     public synchronized List<UebTopicSink> inventory() {
 218         return new ArrayList<>(this.uebTopicSinks.values());
 219     }
 220
 221
 222     @Override
 223     public String toString() {
 224         StringBuilder builder = new StringBuilder();
 225         builder.append("IndexedUebTopicSinkFactory []");
 226         return builder.toString();
 227     }
 228
 229 }