Shift8 Asterisk Manager Interface in Node.js

15 Responses

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1. Henry says

   Are you trying do do something like APE so that the events gets passed to the client real time?

   July 20, 2011, 08:53
2. mobius says

   Hi Henry,

   Well I guess that this is one application you could build with it.

   July 20, 2011, 13:34
3. Kleen says

   i am newbie in node.js, could you make an example like Simple Channel Monitoring via Shift8. how can i see events on client’s browsers ?

   September 20, 2011, 16:23
4. mobius says

   Hi Kleen,

   Check out https://github.com/twmobius/node-shift8/blob/master/tests.js
   Shift8 will emit an event so on the “t.on(‘event’, function( event ) {}” you can capture the event emitted and process it accordingly.

   Some of the events that you are probably interested in, are Newchannel and Hangup so you could have something like:

   var activeCalls = [];
   t.on(‘event’, function(event) {
   if( event.event == ‘NewChannel’ ) {
   activeCalls[event.uniqueid] = event;
   }
   else if( event.event == ‘Hangup’ ) {
   delete activeCalls[event.uniqueid];
   }
   });

   Something along these lines. (I haven’t tried to run it but it should work and you will end up with an array of all of your active calls – Well I guess you should get a listing of all the calls currently open, but this is a separate command)

   Then from that point on you could pass the event/information down by means of Client->Node.js server communication path (Comet/Long Polling/socket.io etc)

   Hope I’ve helped a bit

   September 20, 2011, 17:01
5. Kleen says

   thank you for responding mobius, i can run tests.js as node test.js command in cli and i got events, but i don’t understand what can i call this js from browser ?

   September 20, 2011, 18:32
6. mobius says

   Hi Kleen,

   I guess that you haven’t used node.js that much. Node.js is a framework to run javascript on a server (instead of a client). You could use node.js to build an http server to push events down to the client. So in sense you need node.js on one side (server), and some other javascript on the other (client browser).

   Check out socket.io. It is by far the best way to have a node server speak to a client.

   September 21, 2011, 10:11
7. Julian says

   hi, I am trying to use node.js and shift8, and have got it working, up to a point. I seem to be getting duplicate messages on the console: see below:

   { event: ‘WaitEventComplete’ }
   { event: ‘WaitEventComplete’ }

   { event: ‘Newexten’,
   privilege: ‘dialplan,all’,
   timestamp: ’1319449122.626232′,
   channel: ‘SIP/purple-000000e2′,
   context: ‘conferenceroom’,
   extension: ‘h’,
   priority: ’2′,
   application: ‘NoOp’,
   appdata: ”,
   uniqueid: ’1319449117.274′ }

   { event: ‘Newexten’,
   privilege: ‘dialplan,all’,
   timestamp: ’1319449122.626232′,
   channel: ‘SIP/purple-000000e2′,
   context: ‘conferenceroom’,
   extension: ‘h’,
   priority: ’2′,
   application: ‘NoOp’,
   appdata: ”,
   uniqueid: ’1319449117.274′ }

   { event: ‘PeerStatus’,
   privilege: ‘system,all’,
   timestamp: ’1319449245.446487′,
   channeltype: ‘SIP’,
   peer: ‘SIP/3cx1′,
   peerstatus: ‘Registered’,
   address: ’192.168.99.100:61649′ }

   { event: ‘PeerStatus’,
   privilege: ‘system,all’,
   timestamp: ’1319449245.446487′,
   channeltype: ‘SIP’,
   peer: ‘SIP/3cx1′,
   peerstatus: ‘Registered’,
   address: ’192.168.99.100:61649′ }

   is this something I’ve done ?
   asterisk 10

   October 24, 2011, 12:45
8. mobius says

   Hi Julian,

   I had a console.log() forgotten. Probably this is the case. Get the latest version from github and try again please.

   October 24, 2011, 13:40
9. Julian says

   hmm. Think that I had two sessions. However, when running node test.js, if you press ctrl-c it exists without logging the manager off. How can I disconnect the session ?

   October 24, 2011, 13:53
10. Julian says

    heh. Just seen your post. will try again.

    October 24, 2011, 13:53
11. mobius says

    You should probably do something like:

    process.on(‘SIGINT’, function () {
    t.logoff();
    });

    October 24, 2011, 14:29
12. Julian says

    Thanks mobius for Shift8 – It looks as if it will provide some good glue I am a newbie at node.js and javascript, so it is a little daunting – would you be able to give me an idea on how to call (for example) the getQueueStatus function from test.js ? What is the callback parameter for ? Thanks!

    October 24, 2011, 16:52
13. mobius says

    Julian,

    You could check the source code. It is fully documented. In specific see this:
    https://github.com/twmobius/node-shift8/blob/master/node-shift8.js#L332

    I will see if I can create an API reference from the code (as in phpdoc)

    October 24, 2011, 17:41
14. Julian says

    I have read the code – the problem is that whilst I understand the functions, I don’t know how to call them from my own .js – what is callback, for example ? How do I capture the output from getQueueStatus ?

    Thanks

    October 24, 2011, 19:44
15. mobius says

    Hi Julian,

    The callback is a function of type function(error, result); So you should do something like
    t.getQueueStatus(‘queue’, null, function(error, result) {
    if( error ) {
    console.log(“Unable to get result”);
    return;
    }

    console.log(results);
    
    });

    October 25, 2011, 10:29