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/*-
* ============LICENSE_START=======================================================
* openECOMP : SDN-C
* ================================================================================
* 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.openecomp.sdnc.dmaapclient;
import java.io.File;
import java.io.FileInputStream;
import java.util.LinkedList;
import java.util.List;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class DmaapListener {
private static final String DMAAP_LISTENER_PROPERTIES = "dmaap-listener.properties";
private static final String SDNC_CONFIG_DIR = "SDNC_CONFIG_DIR";
private static final Logger LOG = LoggerFactory
.getLogger(DmaapListener.class);
public static void main(String[] args) {
Properties properties = new Properties();
String propFileName = DMAAP_LISTENER_PROPERTIES;
if (args.length > 0) {
propFileName = args[0];
}
String propPath = null;
String propDir = System.getenv(SDNC_CONFIG_DIR);
List<SdncDmaapConsumer> consumers = new LinkedList();
if (propDir == null) {
propDir = "/opt/sdnc/data/properties";
}
if (!propFileName.startsWith("/")) {
propPath = propDir + "/" + propFileName;
}
File propFile = new File(propPath);
if (!propFile.canRead()) {
LOG.error("Cannot read properties file "+propPath);
System.exit(1);
}
try {
properties.load(new FileInputStream(propFile));
} catch (Exception e) {
LOG.error("Caught exception loading properties from "+propPath, e);
System.exit(1);
}
String subscriptionStr = properties.getProperty("subscriptions");
boolean threadsRunning = false;
LOG.debug("Dmaap subscriptions : "+subscriptionStr);
if (subscriptionStr != null) {
String[] subscriptions = subscriptionStr.split(";");
for (int i = 0; i < subscriptions.length; i++) {
String[] subscription = subscriptions[i].split(":");
String consumerClassName = subscription[0];
String propertyPath = subscription[1];
LOG.debug("Handling subscription [" + consumerClassName + "," + propertyPath + "]");
if (propertyPath == null) {
LOG.error("Invalid subscription (" + subscriptions[i] + ") property file missing");
continue;
}
if (!propertyPath.startsWith("/")) {
propertyPath = propDir + "/" + propertyPath;
}
Class<?> consumerClass = null;
try {
consumerClass = Class.forName(consumerClassName);
} catch (Exception e) {
LOG.error("Could not find DMaap consumer class " + consumerClassName);
}
if (consumerClass != null) {
SdncDmaapConsumer consumer = null;
try {
consumer = (SdncDmaapConsumer) consumerClass.newInstance();
} catch (Exception e) {
LOG.error("Could not create consumer from class " + consumerClassName, e);
}
if (consumer != null) {
LOG.debug("Initializing consumer " + consumerClassName + "(" + propertyPath + ")");
consumer.init(properties, propertyPath);
if (consumer.isReady()) {
Thread consumerThread = new Thread(consumer);
consumerThread.start();
consumers.add(consumer);
threadsRunning = true;
LOG.info("Started consumer thread (" + consumerClassName + " : " + propertyPath + ")");
} else {
LOG.debug("Consumer " + consumerClassName + " is not ready");
}
}
}
}
}
while (threadsRunning) {
threadsRunning = false;
for (SdncDmaapConsumer consumer : consumers) {
if (consumer.isRunning()) {
threadsRunning = true;
}
}
if (!threadsRunning) {
break;
}
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
}
}
LOG.info("No listener threads running - exitting");
}
}
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