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Pub Sub for Handling BG Messages
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| /******************************/ | |
| /* Bluegrass Event Bus PubSub */ | |
| /* from https://davidwalsh.name/pubsub-javascript */ | |
| /******************************/ | |
| var BGEventBus = (function(){ | |
| var topics = {}; | |
| var hOP = topics.hasOwnProperty; | |
| return { | |
| subscribe: function(topic, listener) { | |
| // Create the topic's object if not yet created | |
| if(!hOP.call(topics, topic)) topics[topic] = []; | |
| // Add the listener to queue | |
| var index = topics[topic].push(listener) -1; | |
| // Provide handle back for removal of topic | |
| return { | |
| remove: function() { | |
| delete topics[topic][index]; | |
| } | |
| }; | |
| }, | |
| publish: function(topic, info) { | |
| // If the topic doesn't exist, or there's no listeners in queue, just leave | |
| if(!hOP.call(topics, topic)) return; | |
| // Cycle through topics queue, fire! | |
| topics[topic].forEach(function(item) { | |
| item(info != undefined ? info : {}); | |
| }); | |
| } | |
| }; | |
| })(); |
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| /******************************/ | |
| /* Subscribe to BGEventBus */ | |
| /******************************/ | |
| var bgEventsSubscriptions = {}; | |
| bgEventsSubscriptions['stack_added'] = BGEventBus.subscribe('stack_added', function(obj) { | |
| console.log('stack_added', obj); | |
| }); | |
| bgEventsSubscriptions['stack_changed'] = BGEventBus.subscribe('stack_changed', function(obj) { | |
| console.log('stack_changed', obj); | |
| }); | |
| bgEventsSubscriptions['card_added'] = BGEventBus.subscribe('card_added', function(obj) { | |
| console.log('card_added', obj); | |
| }); | |
| bgEventsSubscriptions['card_changed'] = BGEventBus.subscribe('card_changed', function(obj) { | |
| console.log('card_changed', obj); | |
| }); | |
| bgEventsSubscriptions['card_removed'] = BGEventBus.subscribe('card_removed', function(obj) { | |
| console.log('card_removed', obj); | |
| }); | |
| var liveCoverageBGMsgHandler = function (message) { | |
| var msgObj = JSON.parse(message.b.d); | |
| var cudMap = { | |
| 'c': 'added', | |
| 'u': 'changed', | |
| 'd': 'removed' | |
| }; | |
| if (msgObj.hasOwnProperty('type') && msgObj.hasOwnProperty('cud') && msgObj.hasOwnProperty('data')) { | |
| var eventType = msgObj.type + "_" + cudMap[msgObj.cud]; //TYPE_CUDMAPPROPERTY | |
| BGEventBus.publish(eventType, dmsgObj.data); | |
| } | |
| } |
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| /************************************************************/ | |
| /* Connect to Bluegrass and use liveCoverageBGMsgHandler */ | |
| /************************************************************/ | |
| var bgURL = 'http://sbkwbgxwebs01.production.bigcharts.com/bg/api/connect.ashx'; // dev | |
| // var bgURL = 'http://wsjstream.wsj.net/bg/api/connect.ashx'; //prod | |
| bluegrass.Runtime.openConnection({to:bgURL, via:''}, function(connection, type) { | |
| var channel = null; | |
| var lcChannel = '/dj/livecoverage/livecoverage_dev.schimmel-test-1'; | |
| if (type == "connect") { | |
| console.log('connected'); | |
| channel = connection.subscribe(lcChannel, liveCoverageBGMsgHandler); | |
| } | |
| }); |
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