topoEvent.js
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/*
* Copyright 2015 Open Networking Laboratory
*
* 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.
*/
/*
ONOS GUI -- Topology Event Module.
Defines the conduit between the client and the server:
- provides a clean API for sending events to the server
- dispatches incoming events from the server to the appropriate sub-module
*/
(function () {
'use strict';
// injected refs
var $log, $interval, wss, tps, tis, tfs, tss, tts, tspr;
// internal state
var handlerMap,
openListener,
heartbeatTimer;
var heartbeatPeriod = 5000; // 5 seconds
// ==========================
function createHandlerMap() {
handlerMap = {
showSummary: tps,
showDetails: tss,
showTraffic: tts,
addInstance: tis,
updateInstance: tis,
removeInstance: tis,
addDevice: tfs,
updateDevice: tfs,
removeDevice: tfs,
addHost: tfs,
updateHost: tfs,
removeHost: tfs,
addLink: tfs,
updateLink: tfs,
removeLink: tfs,
spriteListResponse: tspr,
spriteDataResponse: tspr
};
}
function wsOpen(host, url) {
$log.debug('TOPO: web socket open - cluster node:', host, 'URL:', url);
// Request batch of initial data from the new server
wss.sendEvent('topoStart');
}
function cancelHeartbeat() {
if (heartbeatTimer) {
$interval.cancel(heartbeatTimer);
}
heartbeatTimer = null;
}
function scheduleHeartbeat() {
cancelHeartbeat();
heartbeatTimer = $interval(function () {
wss.sendEvent('topoHeartbeat');
}, heartbeatPeriod);
}
angular.module('ovTopo')
.factory('TopoEventService',
['$log', '$interval', 'WebSocketService',
'TopoPanelService', 'TopoInstService', 'TopoForceService',
'TopoSelectService', 'TopoTrafficService', 'TopoSpriteService',
function (_$log_, _$interval_, _wss_,
_tps_, _tis_, _tfs_, _tss_, _tts_, _tspr_) {
$log = _$log_;
$interval = _$interval_;
wss = _wss_;
tps = _tps_;
tis = _tis_;
tfs = _tfs_;
tss = _tss_;
tts = _tts_;
tspr = _tspr_;
createHandlerMap();
function start() {
openListener = wss.addOpenListener(wsOpen);
wss.bindHandlers(handlerMap);
wss.sendEvent('topoStart');
scheduleHeartbeat();
$log.debug('topo comms started');
}
function stop() {
cancelHeartbeat();
wss.sendEvent('topoStop');
wss.unbindHandlers(handlerMap);
wss.removeOpenListener(openListener);
openListener = null;
$log.debug('topo comms stopped');
}
return {
start: start,
stop: stop
};
}]);
}());