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33 commits

Author SHA1 Message Date
Joshua Spence
f2fee5a84e Return a HTTP 500 instead of a HTTP 400 if an internal error occurs in the Aphlict server
Summary: Ref T5651. Only throw a HTTP 400 if the data is invalid (i.e. the request is bad). If something bad happens when trying to transmit the notification, throw a HTTP 500 instead.

Test Plan: Eye-ball it.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Maniphest Tasks: T5651

Differential Revision: https://secure.phabricator.com/D9968
2014-07-18 09:20:00 +10:00
Joshua Spence
41a8837f78 Make HTTP errors returned from the Aphlict server more specific
Summary: Ref T5651. Currently, the Aphlict server returns either `200 OKAY` or `400 Bad Request`. We could return more specific errors in some cases and this may assist with debugging.

Test Plan:
Sent myself a test notification at `/notification/status/` and saw the Aphlict server process the request (running in debug mode). Also poked around with `curl`:

```
> curl http://localhost:22281/
405 Method Not Allowed

> curl http://localhost:22281/ -d ""
400 Bad Request

> curl http://localhost:22281/foobar/
404 Not Found
```

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T5651

Differential Revision: https://secure.phabricator.com/D9967
2014-07-18 09:01:46 +10:00
epriestley
6bf4ec97d5 Fix HTTP 400 from notification server for JSON subscription objects
Summary: Fixes T5651. Sometime we'll send an object to the notification server for `subscribers`, which it will choke on. Use `array_values()` to make sure we're sending an array.

Test Plan: With `(object)` instead, got a consistent error ("no .filter method on object"). With `array_values()`, no error.

Reviewers: joshuaspence

Reviewed By: joshuaspence

Subscribers: epriestley

Maniphest Tasks: T5651

Differential Revision: https://secure.phabricator.com/D9963
2014-07-17 14:48:54 -07:00
Joshua Spence
7304e29dec Various minor JSHint fixes.
Summary: Various fixes as suggested by JSHint.

Test Plan: Eye-balled it.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9783
2014-07-01 06:00:12 +10:00
Joshua Spence
97bb13d1d7 Discover workflows automatically.
Summary: Most scripts detect the relevant workflows automatically. Some scripts, however, use a hardcoded list of workflows.

Test Plan: Ran `./bin/aphlict`, `./bin/cache` and `./bin/phd`.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9564
2014-06-16 09:00:25 +10:00
Joshua Spence
279a0e5371 Don't explicitly keep track of _activeListenerCount in the Aphlict server.
Summary: The `_activeListenerCount` variable is overkill, we should be able to achieve the same result using `Object.keys(this._listeners).length`.

Test Plan:
Mucked around in a NodeJS shell.

```lang=js
> Object.keys({}).length
0
> Object.keys({foo: 'bar'}).length
1
> Object.keys({1: 'foo', 2: 'bar'}).length
2
```

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9554
2014-06-16 05:20:00 +10:00
Joshua Spence
e40b18fb75 Fix call to debug.log.
Summary: As pointed out by @epriestley in D9458#62, this call to `debug.log` is missing an argument.

Test Plan: meh..

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D9485
2014-06-14 11:28:28 -07:00
Joshua Spence
84d259cea2 Modify the Aphlict server to transmit messages instead of broadcasting them.
Summary: Ref T4324. Ref T5284. This adds server-side support for keeping track of a set of PHIDs that the Aphlict clients have subscribed to. Instead of broadcasting a notification to all clients (after which the clients can poll `/notification/individual` in order to determine whether or not they are interested in the notification), transmit notifications only to clients that have subscribed to a PHID that is relevant to the notification.

Test Plan:
I opened up two clients on the same host (incognito tabs in Chrome). Here is the output from the server:

```
> sudo ./bin/aphlict debug
Starting Aphlict server in foreground...
Launching server:

    $ 'nodejs' '/usr/src/phabricator/src/applications/aphlict/management/../../../../support/aphlict/server/aphlict_server.js' --port='22280' --admin='22281' --host='localhost' --user='aphlict'

[Wed Jun 11 2014 19:10:27 GMT+0000 (UTC)] Started Server (PID 4546)
[Wed Jun 11 2014 19:10:36 GMT+0000 (UTC)] <FlashPolicy> Policy Request From ::ffff:192.168.1.1
[Wed Jun 11 2014 19:10:37 GMT+0000 (UTC)] <Listener/1> Connected from ::ffff:192.168.1.1
[Wed Jun 11 2014 19:10:37 GMT+0000 (UTC)] <Listener/1> Received data: {"command":"subscribe","data":["PHID-USER-cb5af6p4oepy5tlgqypi"]}
[Wed Jun 11 2014 19:10:37 GMT+0000 (UTC)] <Listener/1> Subscribed to: ["PHID-USER-cb5af6p4oepy5tlgqypi"]
[Wed Jun 11 2014 19:10:39 GMT+0000 (UTC)] <Listener/1> Received data: {"command":"subscribe","data":["PHID-USER-kfohe3ca5oe6ygykmioq"]}
[Wed Jun 11 2014 19:10:39 GMT+0000 (UTC)] <Listener/1> Subscribed to: ["PHID-USER-kfohe3ca5oe6ygykmioq"]
[Wed Jun 11 2014 19:10:42 GMT+0000 (UTC)] notification: {"key":"6023751084283587681","type":"notification","subscribers":["PHID-USER-cb5af6p4oepy5tlgqypi"]}
[Wed Jun 11 2014 19:10:42 GMT+0000 (UTC)] <Listener/1> Wrote Message
```

I verified (using the "Network" tab in Chrome) that an AJAX request to `/notification/individual/` was only made in the tab belonging to the user that triggered the test notification.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Maniphest Tasks: T5284, T4324

Differential Revision: https://secure.phabricator.com/D9458
2014-06-11 12:17:29 -07:00
epriestley
60d2b743d9 Print out stack traces when Aphlict server dies
Summary: Printing out `err` is less informative than `err.stack`, which has the message, type, //and// a trace.

Test Plan:
Faked an exception, then:

```
$ sudo ./bin/aphlict debug
Starting Aphlict server in foreground...
Launching server:

    $ 'node' '/INSECURE/devtools/phabricator/src/applications/aphlict/management/../../../../support/aphlict/server/aphlict_server.js' --port='22280' --admin='22281' --host='localhost'

[Wed Jun 11 2014 10:20:39 GMT-0700 (PDT)]
<<< UNCAUGHT EXCEPTION! >>>
Error: Example Exception
    at Object.<anonymous> (/INSECURE/devtools/phabricator/support/aphlict/server/aphlict_server.js:73:7)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:901:3
>>> Server exited!
```

Reviewers: joshuaspence

Reviewed By: joshuaspence

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9481
2014-06-11 10:40:04 -07:00
Joshua Spence
ab4324148a Make the Aphlict server more resilient.
Summary:
Currently, the Aphlict server will crash if invalid JSON data is `POST`ed to it. I have fixed this to, instead, return a 400. Also made some minor formatting changes.

Ref T4324. Ref T5284. Also, modify the data structure that is passed around (i.e. `POST`ed to the Aphlict server and broadcast to the Aphlict clients) to include the subscribers. Initially, I figured that we shouldn't expose this information to the clients... however, it is necessary for T4324 that the `AphlictMaster` is able to route a notification to the appropriate clients.

Test Plan:
Making the following `curl` request: `curl --data "{" http://localhost:22281/`.

**Before**
```
sudo ./bin/aphlict debug
Starting Aphlict server in foreground...
Launching server:

    $ 'nodejs' '/usr/src/phabricator/src/applications/aphlict/management/../../../../support/aphlict/server/aphlict_server.js' --port='22280' --admin='22281' --host='localhost' --user='aphlict'

[Wed Jun 11 2014 17:07:51 GMT+0000 (UTC)] Started Server (PID 2033)
[Wed Jun 11 2014 17:07:55 GMT+0000 (UTC)]
<<< UNCAUGHT EXCEPTION! >>>

SyntaxError: Unexpected end of input
>>> Server exited!
```

**After**
(No output... the bad JSON is caught and a 400 is returned)

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T4324, T5284

Differential Revision: https://secure.phabricator.com/D9480
2014-06-11 10:17:12 -07:00
Joshua Spence
ddf5412cbb Add a ./bin/aphlict build workflow.
Summary:
Currently, it is a bit tricky to build the Aphlict client SWF from the ActionScript source. Provide a `./bin/aphlict build` workflow that simplifies this process.

Depends on D9226.

Test Plan:
Executed the workflow:

```
> ./bin/aphlict build
Done.
```

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D9338
2014-06-07 11:34:07 -07:00
Joshua Spence
8a7a7dcbf1 Make ./bin/aphlict behave more like a service.
Summary: Fixes T5126. Provide `start`, `stop`, `restart`, `debug` and `status` workflows for `./bin/aphlict`. This makes it easier to manage Aphlict as if it were a service.

Test Plan:
```
> sudo ./bin/aphlict status
Aphlict is not running.

> sudo ./bin/aphlict stop
Aphlict is not running.

> sudo ./bin/aphlict start
Aphlict Server started.

> sudo ./bin/aphlict status
Aphlict (12880) is running.

> sudo ./bin/aphlict restart
Stopping Aphlict Server (12880)...
Aphlict Server (12880) exited normally.
Aphlict Server started.

> sudo ./bin/aphlict stop
Stopping Aphlict Server (12895)...
Aphlict Server (12895) exited normally.

> sudo ./bin/aphlict debug
Starting Aphlict server in foreground...
Launching server:

    $ node '/usr/src/phabricator/src/applications/aphlict/management/../../../../support/aphlict/server/aphlict_server.js' --port='22280' --admin='22281' --host='localhost' --user='aphlict'

[Fri May 30 2014 09:56:14 GMT+0000 (UTC)] Started Server (PID 12911)
```

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: hach-que, epriestley, Korvin

Maniphest Tasks: T5126

Differential Revision: https://secure.phabricator.com/D9226
2014-06-05 12:13:45 -07:00
Joshua Spence
fe98aa6839 Publish additional context to the Aphlict server.
Summary:
Ref T4324. As well as sending the key for the notification, also publish the notification type and a list of subscribers to the Aphlict server.

The idea here is that the Aphlict server passes anything within the `data` key to the clients, whereas other keys (such as `subscribers`) will be used by the server to determine where the notifications should be routed.

Note that these changes don't do anything useful, but are a prerequisite for further work on T4324.

Test Plan:
Sent myself test notifications at `/notification/status/`. Also inspected the Aphlict server debug output:

```
> sudo ./bin/aphlict --foreground
Starting server in foreground, ignoring pidfile...
Launching server:

    $ node '/usr/src/phabricator/support/aphlict/server/aphlict_server.js' --port='22280' --admin='22281' --host='localhost' --user='aphlict' --log='/var/log/aphlict.log'

[Thu Jun 05 2014 18:38:14 GMT+0000 (UTC)] Started Server (PID 15437)
[Thu Jun 05 2014 18:38:16 GMT+0000 (UTC)] <FlashPolicy> Policy Request From ::ffff:10.0.0.1
[Thu Jun 05 2014 18:38:16 GMT+0000 (UTC)] <Listener/1> Connected from ::ffff:10.0.0.1
[Thu Jun 05 2014 18:38:19 GMT+0000 (UTC)] notification: {"data":{"key":"6021516228036848559","type":"notification"},"subscribers":["PHID-USER-cb5af6p4oepy5tlgqypi"]}
[Thu Jun 05 2014 18:38:19 GMT+0000 (UTC)] <Listener/1> Wrote Message
```

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: epriestley, Korvin

Maniphest Tasks: T4324

Differential Revision: https://secure.phabricator.com/D9396
2014-06-05 12:09:26 -07:00
Joshua Spence
3202f0f23d Post data to the Aphlict server in JSON encoded form.
Summary:
Ref T4324. Currently, notifications data is `POST`ed to the Aphlict server in the `application/x-www-form-urlencoded` format. This works fine for simple data but is problematic for nested data. For example:

```lang=php
array(
  'data' => array(
    'key'  => '6021329908492455737',
    'type' => 'PhabricatorNotificationAdHocFeedStory',
  ),
  'subscribers' => array(
    'PHID-USER-y7ofqm276ejs62yqghge',
  ),
);
```

Is encoded as `data%5Bkey%5D=6021329908492455737&data%5Btype%5D=PhabricatorNotificationAdHocFeedStory&subscribers%5B0%5D=PHID-USER-y7ofqm276ejs62yqghge`. This string is then (incorrectly) decoded by `querystring.parse` as:

```lang=javascript
> querystring.parse('data%5Bkey%5D=6021329908492455737&data%5Btype%5D=PhabricatorNotificationAdHocFeedStory&subscribers%5B0%5D=PHID-USER-y7ofqm276ejs62yqghge');
{ 'data[key]': '6021329908492455737',
  'data[type]': 'PhabricatorNotificationAdHocFeedStory',
  'subscribers[0]': 'PHID-USER-y7ofqm276ejs62yqghge' }
```

Test Plan: Sent test notifications from `/notification/status/` and verified that the notifications still worked.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T4324

Differential Revision: https://secure.phabricator.com/D9386
2014-06-05 09:47:33 -07:00
epriestley
f302bfc8f8 Break Aphlict's flash policy server into a separate class
Summary: Ref T4324. One of the server we start just sends pre-canned XML responses. Separate it out of the main file and hand it all the objects it interacts with in structured, reasonable ways.

Test Plan: Hit "Send Test Notification", saw notification, saw flash policy info in the log.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4324

Differential Revision: https://secure.phabricator.com/D8257
2014-02-17 16:01:09 -08:00
epriestley
28fe44da0a Break some of Aphlict into reasonable classes with sensible responsibilities
Summary:
Ref T4324.

  - Create `Listener` to represent listening clients.
  - Create `ListenerList` to represent the current list of clients.
  - Create `Logfile` to handle logging.

Test Plan: Clicked "Send Test Notification", verified logs, status and notifications all work correctly.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4324

Differential Revision: https://secure.phabricator.com/D8256
2014-02-17 16:00:51 -08:00
epriestley
260eb5344b Allow Aphlict to load Javelin and use Javelin class definitions
Summary:
Ref T4324. The server code is probably going to get a fair amount more complicated, so allow it to load Javelin classes in a mostly-reasonable way.

This integration has a few warts, but should be good enough to let us manage complexity through the next iteration of the server.

(Mostly I just want the concicse Javelin mechanism for defining new classes.)

Version bump is just so I can figure stuff out if this creates any issues for users based on which version of things they're running.

Test Plan: Started server, posted some messages through it.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4324

Differential Revision: https://secure.phabricator.com/D8253
2014-02-17 16:00:01 -08:00
epriestley
a1e7a4ccca Version the Aphlict notification server and prompt users to upgrade if they're out of date
Summary: Ref T4324. Add some version information to the server status output, and setup checks to test for an unreachable or out-of-date server.

Test Plan:
  - With server down, hit reasonable setup check.
  - With server up and at a bad version, hit reasonable setup check.
  - Viewed `/notification/status/`.
  - The CSS thing fixes this:

{F114445}

Reviewers: btrahan, chad

Reviewed By: chad

CC: chad, aran

Maniphest Tasks: T4324

Differential Revision: https://secure.phabricator.com/D8251
2014-02-17 15:59:39 -08:00
epriestley
f88a2b735d Remove spurious "+x" from files that shouldn't have it
Summary: We have a bunch of files with +x that aren't actually executable.
Remove +x from PNGs, etc.
2013-10-05 05:18:17 -07:00
epriestley
a7e4b846d6 Fix Aphlict server for newer Node
Summary: Fixes T3630.

Test Plan: Ran server on 0.11.0, got notifications.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T3630

Differential Revision: https://secure.phabricator.com/D6588
2013-07-27 16:24:12 -07:00
epriestley
e54a2c1325 Minor, fix obvious typo in Aphlict server error handling. 2013-06-28 14:42:46 -07:00
epriestley
0569218201 Use JsShrink if jsxmin is not available
Summary: If `jsxmin` is not available, use a pure PHP implementation instead (JsShrink).

Test Plan:
  - Ran `arc lint --lintall` on all JS and fixed every relevant warning.
  - Forced minification on and browsed around the site using JS behaviors. Didn't hit anything problematic.

Reviewers: vrana, btrahan

Reviewed By: vrana

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5670
2013-05-18 17:04:22 -07:00
epriestley
2b8adb3a83 Don't hang on /status/ for newer Node
Summary: At some point, Node started requiring us to read data before we can get the 'end' event, it seems. Fixes T2953.

Test Plan: Ran server in `--foreground` mode on node v0.11.0, made request to `/status/`, got response.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T2953

Differential Revision: https://secure.phabricator.com/D5666
2013-04-11 15:45:50 -07:00
Nick Harper
53115007ff Make bin/aphlict behave slightly better when forking
Summary:
Due to how file descriptors get inherited when a process forks and the way
our script to start/restart stuff works, having bin/aphlict not close
STDOUT caused our script to hang. This diff provides a solution; however,
something like https://secure.phabricator.com/diffusion/PHU/browse/master/src/daemon/PhutilDaemonOverseer.php;b45eea975f6d9afc$127-129
may be better or more robust.

Test Plan:
Run our script that calls bin/aphlict in passthru() and see that it no
longer hangs.

Reviewers: epriestley, vrana

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4240
2012-12-20 10:38:13 -08:00
vrana
776a240870 Let Aphlict listen on the specified host
Summary: We allow user to specify the host to listen to but we listen on 127.0.0.1 instead.

Test Plan:
Hardcoded the path and verified that I can connect to the host from other machine.

Verified that `localhost` still doesn't allow remote connections.

Reviewers: ddfisher, epriestley, nh

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4238
2012-12-19 15:44:17 -08:00
vrana
ef85f49adc Delete license headers from files
Summary:
This commit doesn't change license of any file. It just makes the license implicit (inherited from LICENSE file in the root directory).

We are removing the headers for these reasons:

- It wastes space in editors, less code is visible in editor upon opening a file.
- It brings noise to diff of the first change of any file every year.
- It confuses Git file copy detection when creating small files.
- We don't have an explicit license header in other files (JS, CSS, images, documentation).
- Using license header in every file is not obligatory: http://www.apache.org/dev/apply-license.html#new.

This change is approved by Alma Chao (Lead Open Source and IP Counsel at Facebook).

Test Plan: Verified that the license survived only in LICENSE file and that it didn't modify externals.

Reviewers: epriestley, davidrecordon

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T2035

Differential Revision: https://secure.phabricator.com/D3886
2012-11-05 11:16:51 -08:00
epriestley
5e184ee593 Improve debug support for notifications
Summary: Add a `notification.debug` setting that shows debug info in the browser. Also improve some logging/error handling stuff and fix a bug with host names.

Test Plan: {F13098}

Reviewers: jungejason, btrahan, vrana

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T944

Differential Revision: https://secure.phabricator.com/D2810
2012-06-20 13:20:47 -07:00
epriestley
45a3421e9b Minor, fix Aphlict wrapper signal handling issue under dash. 2012-06-18 15:20:25 -07:00
epriestley
bad22cb303 Add a bin/aphlict wrapper to handle aphlict config / daemonization
Summary: Simple wrapper script to configure, launch, daemonize and restart the Aphlict server.

Test Plan: Ran "bin/aphlict", checked /notification/status/. Ran "bin/aphlict --foreground".

Reviewers: jungejason, vrana

Reviewed By: jungejason

CC: aran

Maniphest Tasks: T944

Differential Revision: https://secure.phabricator.com/D2784
2012-06-18 15:11:19 -07:00
epriestley
86040227b0 Improve Aphlict server
Summary:
  - Move to port 22280 by default.
  - Warn when running as non-root.
  - Allow subscription and publish/admin ports to be configured.
  - Allow server to drop root after binding to 843.
  - Allow log path to be configured.
  - Add /status/ admin URI which shows server status.
  - Return HTTP 400 Bad Request for other requests, instead of hanging.
  - Minor formatting cleanup.

Test Plan:
Ran without root:

  $ node aphlict_server.js

...got a good error message. Ran with --user:

  $ sudo node aphlict_server.js --user=epriestley

...verified server dropped permissions. Ran with --port / --admin. Hit /status/ with GET, got status. Hit other URLs with GET, got 400.

Reviewers: allenjohnashton, ddfisher, keebuhm

Reviewed By: ddfisher

CC: aran

Differential Revision: https://secure.phabricator.com/D2737
2012-06-14 06:12:54 -07:00
David Fisher
f8f195b329 Make Notifications Realtime
Summary:
Adds the node.js Aphlict server, the flash Aphlict client, and some
supporting javascript. Built on top of - and requires - D2703 (which is still
in progress).  Will likely work with no modification on top of the final
version, though.

The node server is currently run with

   sudo node support/aphlict/server/aphlict_server.js

Test Plan: tested locally

Reviewers: epriestley

Reviewed By: epriestley

CC: allenjohnashton, keebuhm, aran, Korvin

Differential Revision: https://secure.phabricator.com/D2704
2012-06-11 17:51:12 -07:00
epriestley
f8431bbfee Make Aphlict client somewhat more approachable
Summary: Provide a reasonable JS API for the Aphlict client. Provide an example behavior to invoke it.

Test Plan:
Ran "aphlict_server.js" with:

  $ sudo node aphlict_server.js

Loaded /aphlict/. Opened console. Got "hello" from the server every second.

Got reasonable errors with the server not present ("Security exception", but this is because it can't connect to port 843 to access the policy server).

Reviewers: ddfisher, keebuhm, allenjohnashton, btrahan

Reviewed By: btrahan

CC: aran, epriestley

Maniphest Tasks: T944

Differential Revision: https://secure.phabricator.com/D1800
2012-03-06 20:14:03 -08:00
epriestley
84731e8f00 Aphlict, simple notification server
Summary:
This is purely a prototype at the moment, but the basic functionality sort of
works.

I'm not sure how far I want to go with this but I think we might be able to get
somewhere without it being gross.

The idea here is to build a notification server WITHOUT using Comet, since Comet
is extremely difficult and complicated.

Instead, I use Flash on the client. LocalConnection allows flash instances to
talk to each other and connect() can be used as a locking primitive. This allows
all the instances to elect a master instance in a race-safe way. The master is
responsible for opening a single connnection to the server.

On the server, I use Node.js since PHP is pretty unsuitable for this task.

See Github Issue #3: https://github.com/facebook/phabricator/issues/3

One thing I need to figure out next is if I can reasonably do SSL/TSL over Flash
(it looks like I can, in theory, with the as3crypto library) or if the server
needs to just send down version information and trigger a separate Ajax call on
the client.

Test Plan:
Created a client pool and connected it to the server, with election and failover
apparently working correctly.

Reviewed By: aran
Reviewers: Girish, aran, jungejason, tuomaspelkonen, davidrecordon
Commenters: Girish, davidrecordon
CC: aran, epriestley, Girish, davidrecordon
Differential Revision: 284
2011-05-17 10:32:41 -07:00