/**
* Copyright 2013, Big Switch Networks, Inc.
*
* 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.
**/
package net.floodlightcontroller.core.web;
import net.floodlightcontroller.linkdiscovery.ILinkDiscoveryService;
import net.floodlightcontroller.linkdiscovery.internal.EventHistoryTopologyLink;
import net.floodlightcontroller.linkdiscovery.internal.LinkDiscoveryManager;
import net.floodlightcontroller.util.EventHistory;
import org.restlet.resource.Get;
import org.restlet.resource.ServerResource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author subrata
*
*/
public class EventHistoryTopologyLinkResource extends ServerResource {
// TODO - Move this to the DeviceManager Rest API
protected static Logger log =
LoggerFactory.getLogger(EventHistoryTopologyLinkResource.class);
@Get("json")
public EventHistory<EventHistoryTopologyLink> handleEvHistReq() {
// Get the event history count. Last <count> events would be returned
String evHistCount = (String)getRequestAttributes().get("count");
int count = EventHistory.EV_HISTORY_DEFAULT_SIZE;
try {
count = Integer.parseInt(evHistCount);
}
catch(NumberFormatException nFE) {
// Invalid input for event count - use default value
}
LinkDiscoveryManager linkDiscoveryManager =
(LinkDiscoveryManager)getContext().getAttributes().
get(ILinkDiscoveryService.class.getCanonicalName());
if (linkDiscoveryManager != null) {
return new EventHistory<EventHistoryTopologyLink>(
linkDiscoveryManager.evHistTopologyLink, count);
}
return null;
}
}