| /* |
| * 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 -- Remote -- Web Socket Service |
| */ |
| (function () { |
| 'use strict'; |
| |
| var fs; |
| |
| function fnOpen(f) { |
| // wrap the onOpen function; we will handle any housekeeping here... |
| if (!fs.isF(f)) { |
| return null; |
| } |
| |
| return function (openEvent) { |
| // NOTE: nothing worth passing to the caller? |
| f(); |
| }; |
| } |
| |
| function fnMessage(f) { |
| // wrap the onMessage function; we will attempt to decode the |
| // message event payload as JSON and pass that in... |
| if (!fs.isF(f)) { |
| return null; |
| } |
| |
| return function (msgEvent) { |
| var ev; |
| try { |
| ev = JSON.parse(msgEvent.data); |
| } catch (e) { |
| ev = { |
| error: 'Failed to parse JSON', |
| e: e |
| }; |
| } |
| f(ev); |
| }; |
| } |
| |
| function fnClose(f) { |
| // wrap the onClose function; we will handle any parameters to the |
| // close event here... |
| if (!fs.isF(f)) { |
| return null; |
| } |
| |
| return function (closeEvent) { |
| // NOTE: only seen {reason == ""} so far, nevertheless... |
| f(closeEvent.reason); |
| }; |
| } |
| |
| angular.module('onosRemote') |
| .factory('WebSocketService', |
| ['$log', '$location', 'UrlFnService', 'FnService', |
| |
| function ($log, $loc, ufs, _fs_) { |
| fs = _fs_; |
| |
| // creates a web socket for the given path, returning a "handle". |
| // opts contains the event handler callbacks, etc. |
| function createWebSocket(path, opts) { |
| var o = opts || {}, |
| wsport = opts && opts.wsport, |
| fullUrl = ufs.wsUrl(path, wsport), |
| api = { |
| meta: { path: fullUrl, ws: null }, |
| send: send, |
| close: close |
| }, |
| ws; |
| |
| try { |
| ws = new WebSocket(fullUrl); |
| api.meta.ws = ws; |
| } catch (e) { |
| } |
| |
| $log.debug('Attempting to open websocket to: ' + fullUrl); |
| |
| if (ws) { |
| ws.onopen = fnOpen(o.onOpen); |
| ws.onmessage = fnMessage(o.onMessage); |
| ws.onclose = fnClose(o.onClose); |
| } |
| |
| // messages are expected to be event objects.. |
| function send(ev) { |
| if (ev) { |
| if (ws) { |
| ws.send(JSON.stringify(ev)); |
| } else { |
| $log.warn('ws.send() no web socket open!', |
| fullUrl, ev); |
| } |
| } |
| } |
| |
| function close() { |
| if (ws) { |
| ws.close(); |
| ws = null; |
| api.meta.ws = null; |
| } |
| } |
| |
| return api; |
| } |
| |
| return { |
| createWebSocket: createWebSocket |
| }; |
| }]); |
| |
| }()); |