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/*
* ============LICENSE_START=======================================================
* policy-endpoints
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.common.endpoints.event.comm.bus.impl;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Properties;
import org.onap.policy.common.endpoints.event.comm.bus.UebTopicSink;
import org.onap.policy.common.endpoints.event.comm.bus.UebTopicSinkFactory;
import org.onap.policy.common.endpoints.event.comm.bus.internal.InlineUebTopicSink;
import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Factory of UEB Reader Topics indexed by topic name
*/
public class IndexedUebTopicSinkFactory implements UebTopicSinkFactory {
private static final IndexedUebTopicSinkFactory instance = new IndexedUebTopicSinkFactory();
private static final String MISSING_TOPIC = "A topic must be provided";
/**
* Logger
*/
private static Logger logger = LoggerFactory.getLogger(IndexedUebTopicSinkFactory.class);
/**
* UEB Topic Name Index
*/
protected HashMap<String, UebTopicSink> uebTopicSinks = new HashMap<>();
/**
* Get the singleton instance.
*
* @return the instance
*/
public static IndexedUebTopicSinkFactory getInstance() {
return instance;
}
private IndexedUebTopicSinkFactory() {}
@Override
public UebTopicSink build(List<String> servers, String topic, String apiKey, String apiSecret, String partitionKey,
boolean managed, boolean useHttps, boolean allowSelfSignedCerts) {
if (servers == null || servers.isEmpty()) {
throw new IllegalArgumentException("UEB Server(s) must be provided");
}
if (topic == null || topic.isEmpty()) {
throw new IllegalArgumentException(MISSING_TOPIC);
}
synchronized (this) {
if (uebTopicSinks.containsKey(topic)) {
return uebTopicSinks.get(topic);
}
UebTopicSink uebTopicWriter = new InlineUebTopicSink(servers, topic, apiKey, apiSecret, partitionKey,
useHttps, allowSelfSignedCerts);
if (managed) {
uebTopicSinks.put(topic, uebTopicWriter);
}
return uebTopicWriter;
}
}
@Override
public UebTopicSink build(List<String> servers, String topic) {
return this.build(servers, topic, null, null, null, true, false, false);
}
@Override
public List<UebTopicSink> build(Properties properties) {
String writeTopics = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS);
if (writeTopics == null || writeTopics.isEmpty()) {
logger.info("{}: no topic for UEB Sink", this);
return new ArrayList<>();
}
List<String> writeTopicList = new ArrayList<>(Arrays.asList(writeTopics.split("\\s*,\\s*")));
List<UebTopicSink> newUebTopicSinks = new ArrayList<>();
synchronized (this) {
for (String topic : writeTopicList) {
if (this.uebTopicSinks.containsKey(topic)) {
newUebTopicSinks.add(this.uebTopicSinks.get(topic));
continue;
}
String servers = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
+ PolicyEndPointProperties.PROPERTY_TOPIC_SERVERS_SUFFIX);
if (servers == null || servers.isEmpty()) {
logger.error("{}: no UEB servers configured for sink {}", this, topic);
continue;
}
List<String> serverList = new ArrayList<>(Arrays.asList(servers.split("\\s*,\\s*")));
String apiKey = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
+ PolicyEndPointProperties.PROPERTY_TOPIC_API_KEY_SUFFIX);
String apiSecret = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
+ PolicyEndPointProperties.PROPERTY_TOPIC_API_SECRET_SUFFIX);
String partitionKey = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
+ PolicyEndPointProperties.PROPERTY_TOPIC_SINK_PARTITION_KEY_SUFFIX);
String managedString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
+ PolicyEndPointProperties.PROPERTY_MANAGED_SUFFIX);
boolean managed = true;
if (managedString != null && !managedString.isEmpty()) {
managed = Boolean.parseBoolean(managedString);
}
String useHttpsString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS + "." + topic
+ PolicyEndPointProperties.PROPERTY_HTTP_HTTPS_SUFFIX);
// default is to use HTTP if no https property exists
boolean useHttps = false;
if (useHttpsString != null && !useHttpsString.isEmpty()) {
useHttps = Boolean.parseBoolean(useHttpsString);
}
String allowSelfSignedCertsString = properties.getProperty(PolicyEndPointProperties.PROPERTY_UEB_SINK_TOPICS
+ "." + topic + PolicyEndPointProperties.PROPERTY_ALLOW_SELF_SIGNED_CERTIFICATES_SUFFIX);
// default is to disallow self-signed certs
boolean allowSelfSignedCerts = false;
if (allowSelfSignedCertsString != null && !allowSelfSignedCertsString.isEmpty()) {
allowSelfSignedCerts = Boolean.parseBoolean(allowSelfSignedCertsString);
}
UebTopicSink uebTopicWriter = this.build(serverList, topic, apiKey, apiSecret, partitionKey, managed,
useHttps, allowSelfSignedCerts);
newUebTopicSinks.add(uebTopicWriter);
}
return newUebTopicSinks;
}
}
@Override
public void destroy(String topic) {
if (topic == null || topic.isEmpty()) {
throw new IllegalArgumentException(MISSING_TOPIC);
}
UebTopicSink uebTopicWriter;
synchronized (this) {
if (!uebTopicSinks.containsKey(topic)) {
return;
}
uebTopicWriter = uebTopicSinks.remove(topic);
}
uebTopicWriter.shutdown();
}
@Override
public void destroy() {
List<UebTopicSink> writers = this.inventory();
for (UebTopicSink writer : writers) {
writer.shutdown();
}
synchronized (this) {
this.uebTopicSinks.clear();
}
}
@Override
public UebTopicSink get(String topic) {
if (topic == null || topic.isEmpty()) {
throw new IllegalArgumentException(MISSING_TOPIC);
}
synchronized (this) {
if (uebTopicSinks.containsKey(topic)) {
return uebTopicSinks.get(topic);
} else {
throw new IllegalStateException("UebTopicSink for " + topic + " not found");
}
}
}
@Override
public synchronized List<UebTopicSink> inventory() {
return new ArrayList<>(this.uebTopicSinks.values());
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("IndexedUebTopicSinkFactory []");
return builder.toString();
}
}
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