| /* |
| * 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'; |
| |
| // injected refs |
| var fs, $log; |
| |
| // internal state |
| var ws, sws, sid = 0, |
| handlers = {}; |
| |
| function resetSid() { |
| sid = 0; |
| } |
| |
| // Binds the specified message handlers. |
| function bindHandlers(handlerMap) { |
| var m = d3.map(handlerMap), |
| dups = []; |
| |
| m.forEach(function (key, value) { |
| var fn = fs.isF(value[key]); |
| if (!fn) { |
| $log.warn(key + ' binding not a function on ' + value); |
| return; |
| } |
| |
| if (handlers[key]) { |
| dups.push(key); |
| } else { |
| handlers[key] = fn; |
| } |
| }); |
| if (dups.length) { |
| $log.warn('duplicate bindings ignored:', dups); |
| } |
| } |
| |
| // Unbinds the specified message handlers. |
| function unbindHandlers(handlerMap) { |
| var m = d3.map(handlerMap); |
| m.forEach(function (key) { |
| delete handlers[key]; |
| }); |
| } |
| |
| // Formulates an event message and sends it via the shared web-socket. |
| function sendEvent(evType, payload) { |
| var p = payload || {}; |
| if (sws) { |
| $log.debug(' *Tx* >> ', evType, payload); |
| sws.send({ |
| event: evType, |
| sid: ++sid, |
| payload: p |
| }); |
| } else { |
| $log.warn('sendEvent: no websocket open:', evType, payload); |
| } |
| } |
| |
| |
| // Handles the specified message using handler bindings. |
| function handleMessage(msgEvent) { |
| var ev; |
| try { |
| ev = JSON.parse(msgEvent.data); |
| $log.debug(' *Rx* >> ', ev.event, ev.payload); |
| dispatchToHandler(ev); |
| } catch (e) { |
| $log.error('message is not valid JSON', msgEvent); |
| } |
| } |
| |
| // Dispatches the message to the appropriate handler. |
| function dispatchToHandler(event) { |
| var handler = handlers[event.event]; |
| if (handler) { |
| handler(event.payload); |
| } else { |
| $log.warn('unhandled event:', event); |
| } |
| } |
| |
| function handleOpen() { |
| $log.info('web socket open'); |
| // FIXME: implement calling external hooks |
| } |
| |
| function handleClose() { |
| $log.info('web socket closed'); |
| // FIXME: implement reconnect logic |
| } |
| |
| angular.module('onosRemote') |
| .factory('WebSocketService', |
| ['$log', '$location', 'UrlFnService', 'FnService', |
| |
| function (_$log_, $loc, ufs, _fs_) { |
| fs = _fs_; |
| $log = _$log_; |
| |
| // 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 |
| }; |
| |
| try { |
| ws = new WebSocket(fullUrl); |
| api.meta.ws = ws; |
| } catch (e) { |
| } |
| |
| $log.debug('Attempting to open websocket to: ' + fullUrl); |
| |
| if (ws) { |
| ws.onopen = handleOpen; |
| ws.onmessage = handleMessage; |
| ws.onclose = handleClose; |
| } |
| |
| // Sends a formulated event message via the backing web-socket. |
| function send(ev) { |
| if (ev && ws) { |
| ws.send(JSON.stringify(ev)); |
| } else if (!ws) { |
| $log.warn('ws.send() no web socket open!', fullUrl, ev); |
| } |
| } |
| |
| // Closes the backing web-socket. |
| function close() { |
| if (ws) { |
| ws.close(); |
| ws = null; |
| api.meta.ws = null; |
| } |
| } |
| |
| sws = api; // Make the shared web-socket accessible |
| return api; |
| } |
| |
| return { |
| resetSid: resetSid, |
| createWebSocket: createWebSocket, |
| bindHandlers: bindHandlers, |
| unbindHandlers: unbindHandlers, |
| sendEvent: sendEvent |
| }; |
| }]); |
| |
| }()); |