/**
* Copyright (c) Codice Foundation
* <p/>
* This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
* General Public License as published by the Free Software Foundation, either version 3 of the
* License, or any later version.
* <p/>
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details. A copy of the GNU Lesser General Public License
* is distributed along with this program and can be found at
* <http://www.gnu.org/licenses/lgpl.html>.
*/
package ddf.catalog.pubsub.tracker;
import java.util.HashMap;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ddf.catalog.event.EventException;
import ddf.catalog.event.EventProcessor;
import ddf.catalog.event.Subscription;
public class SubscriptionTracker {
private static final Logger LOGGER = LoggerFactory.getLogger(SubscriptionTracker.class);
protected Map<String, String> services = new HashMap<String, String>();
protected EventProcessor provider;
public void startUp() {
String methodName = "startUp";
LOGGER.debug("ENTERING: {}", methodName);
LOGGER.debug("EXITING: {}", methodName);
}
public void cleanUp() {
String methodName = "cleanUp";
LOGGER.debug("ENTERING: {}", methodName);
LOGGER.debug("EXITING: {}", methodName);
}
public void setProvider(EventProcessor provider) {
String methodName = "setProvider";
LOGGER.debug("ENTERING: {}", methodName);
this.provider = provider;
LOGGER.debug("EXITING: {}", methodName);
}
public void addingService(Subscription subscription, Map props) {
String methodName = "addingService";
LOGGER.debug("ENTERING: {}", methodName);
LOGGER.debug("*********************************************");
String serviceId = props.get("service.id").toString();
LOGGER.debug("{} has detected a subscription request({})",
SubscriptionTracker.class.getName(), serviceId);
try {
String subscriptionId = provider.createSubscription(subscription);
LOGGER.debug("{} Provider has created the subscription for request ({}): {}",
provider.getClass().getName(), serviceId, subscriptionId);
services.put(serviceId, subscriptionId);
} catch (EventException e) {
LOGGER.error("Error in creating subscription. {}", serviceId, e);
}
LOGGER.debug("EXITING: {}", methodName);
}
public void removedService(Subscription subscription, Map props) {
String methodName = "removedService";
LOGGER.debug("ENTERING: {}", methodName);
if (props != null) {
if (props.get("service.id") != null) {
String serviceId = props.get("service.id").toString();
String subscriptionId = services.get(serviceId);
LOGGER.debug("{} has detected request for subscription ({}) deletion.",
SubscriptionTracker.class.getName(), serviceId);
try {
provider.deleteSubscription(subscriptionId);
LOGGER.debug("Subscription ({}) has been deleted.", serviceId);
// cleanup the reference in our map
services.remove(serviceId);
} catch (EventException e) {
LOGGER.error("Error in deleting subscription. ", serviceId, e);
}
}
}
LOGGER.debug("EXITING: {}", methodName);
}
}