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/*-
* ============LICENSE_START=======================================================
* PROJECT
* ================================================================================
* Copyright (C) 2017 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.dcae.commonFunction;
import com.att.nsa.cambria.client.CambriaBatchingPublisher;
import com.att.nsa.cambria.client.CambriaClientBuilders;
import com.att.nsa.clock.SaClock;
import com.att.nsa.logging.LoggingContext;
import com.att.nsa.logging.log4j.EcompFields;
import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.List;
import java.util.concurrent.TimeUnit;
public class EventPublisher {
private static final String VES_UNIQUE_ID = "VESuniqueId";
private static EventPublisher instance;
private static CambriaBatchingPublisher pub;
private String streamid = "";
private String ueburl = "";
private String topic = "";
private String authuser = "";
private String authpwd = "";
private static Logger log = LoggerFactory.getLogger(EventPublisher.class);
private EventPublisher(String newstreamid) {
streamid = newstreamid;
try {
ueburl = DmaapPropertyReader.getInstance(CommonStartup.cambriaConfigFile).dmaap_hash
.get(streamid + ".cambria.url");
if (ueburl == null) {
ueburl = DmaapPropertyReader.getInstance(CommonStartup.cambriaConfigFile).dmaap_hash
.get(streamid + ".cambria.hosts");
}
topic = DmaapPropertyReader.getInstance(CommonStartup.cambriaConfigFile)
.getKeyValue(streamid + ".cambria.topic");
authuser = DmaapPropertyReader.getInstance(CommonStartup.cambriaConfigFile)
.getKeyValue(streamid + ".basicAuthUsername");
if (authuser != null) {
authpwd = DmaapPropertyReader
.getInstance(CommonStartup.cambriaConfigFile).dmaap_hash
.get(streamid + ".basicAuthPassword");
}
} catch (Exception e) {
log.error("CambriaClientBuilders connection reader exception : " + e.getMessage());
}
}
/**
* Returns event publisher
*
* @param streamid stream id
* @return event publisher
*/
public static synchronized EventPublisher getInstance(String streamid) {
if (instance == null) {
instance = new EventPublisher(streamid);
}
if (!instance.streamid.equals(streamid)) {
instance.closePublisher();
instance = new EventPublisher(streamid);
}
return instance;
}
/**
*
* @param event json object for event
*/
public synchronized void sendEvent(JSONObject event) {
log.debug("EventPublisher.sendEvent: instance for publish is ready");
if (event.has(VES_UNIQUE_ID)) {
String uuid = event.get(VES_UNIQUE_ID).toString();
LoggingContext localLC = VESLogger.getLoggingContextForThread(uuid);
localLC.put(EcompFields.kBeginTimestampMs, SaClock.now());
log.debug("Removing VESuniqueid object from event");
event.remove(VES_UNIQUE_ID);
}
try {
if (authuser != null) {
log.debug(String.format("URL:%sTOPIC:%sAuthUser:%sAuthpwd:%s", ueburl, topic,
authuser, authpwd));
pub = new CambriaClientBuilders.PublisherBuilder()
.usingHosts(ueburl)
.onTopic(topic)
.usingHttps()
.authenticatedByHttp(authuser, authpwd)
.logSendFailuresAfter(5)
// .logTo(log)
// .limitBatch(100, 10)
.build();
} else {
log.debug(String.format("URL:%sTOPIC:%s", ueburl, topic));
pub = new CambriaClientBuilders.PublisherBuilder()
.usingHosts(ueburl)
.onTopic(topic)
// .logTo(log)
.logSendFailuresAfter(5)
// .limitBatch(100, 10)
.build();
}
int pendingMsgs = pub.send("MyPartitionKey", event.toString());
//this.wait(2000);
if (pendingMsgs > 100) {
log.info("Pending Message Count=" + pendingMsgs);
}
closePublisher();
log.info("pub.send invoked - no error");
CommonStartup.oplog.info(String.format("URL:%sTOPIC:%sEvent Published:%s",
ueburl, topic, event));
} catch (IOException | GeneralSecurityException | IllegalArgumentException e) {
log.error("Unable to publish event: {} streamid: {}. Exception: {}", event, streamid, e);
}
finally {
closePublisher();
}
}
public synchronized void closePublisher() {
try {
if (pub != null) {
final List<?> stuck = pub.close(20, TimeUnit.SECONDS);
if (!stuck.isEmpty()) {
log.error(stuck.size() + " messages unsent");
}
}
} catch (InterruptedException | IOException e) {
log.error("Caught Exception on Close event: {}", e);
}
}
}
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