Summary:
Ref T6915. This allows multiple notification servers to talk to each other:
- Every server has a list of every other server, including itself.
- Every server generates a unique fingerprint at startup, like "XjeHuPKPBKHUmXkB".
- Every time a server gets a message, it marks it with its personal fingerprint, then sends it to every other server.
- Servers do not retransmit messages that they've already seen (already marked with their fingerprint).
- Servers learn other servers' fingerprints after they send them a message, and stop sending them messages they've already seen.
This is pretty crude, and the first message to a cluster will transmit N^2 times, but N is going to be like 3 or 4 in even the most extreme cases for a very long time.
The fingerprinting stops cycles, and stops servers from sending themselves copies of messages.
We don't need to do anything more sophisticated than this because it's fine if some notifications get lost when a server dies. Clients will reconnect after a short period of time and life will continue.
Test Plan:
- Wrote two server configs.
- Started two servers.
- Told Phabricator about all four services.
- Loaded Chrome and Safari.
- Saw them connect to different servers.
- Sent messages in one, got notifications in the other (magic!).
- Saw the fingerprinting stuff work on the console, no infinite retransmission of messages, etc.
(This pretty much just worked when I ran it the first time so I probably missed something?)
{F1218835}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T6915
Differential Revision: https://secure.phabricator.com/D15711
Summary:
Fixes T10783 (what little of it remains). Ref T10697.
Aphlict currently uses request paths for two different things:
- multi-tenant instancing in the Phacility cluster (each instance gets its own namespace within an Aphlict server);
- some users configure nginx and apache to do proxying or SSL termination based on the path.
Currently, these can collide.
Put a "~" before the instance name to make it unambiguous. At some point we can possibly just use a GET parameter, but I think there was some reason I didn't do that originally and this sequence of changes is disruptive enough already.
Test Plan: Saw local Aphlict unambiguously recognize "local.phacility.com" as instance "local", with a "~"-style URI.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697, T10783
Differential Revision: https://secure.phabricator.com/D15705
Summary:
Fixes T10697. This finishes bringing the rest of the config up to cluster power levels.
Phabricator is now given an arbitrarily long list of notification servers.
Each Aphlict server is given an arbitrarily long list of ports to run services on.
Users are free to make them meet in the middle by proxying whatever they want to whatever else they want.
This should also accommodate clustering fairly easily in the future.
Also rewrote the status UI and changed a million other things. 🐗
Test Plan:
{F1217864}
{F1217865}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697
Differential Revision: https://secure.phabricator.com/D15703
Summary:
Ref T10697. Currently, `aphlict` takes a ton of command line flags to configure exactly one admin server and exactly one client server.
I want to replace this with a config file. Additionally, I plan to support:
- arbitrary numbers of listening client ports;
- arbitrary numbers of listening admin ports;
- SSL on any port.
For now, just transform the arguments to look like they're a config file. In the future, I'll load from a config file instead.
This greater generality will allow you to do stuff like run separate HTTP and HTTPS admin ports if you really want. I don't think there's a ton of use for this, but it tends to make the code cleaner anyway and there may be some weird cross-datacneter cases for it. Certainly, we undershot with the initial design and lots of users want to terminate SSL in nginx and run only HTTP on this server.
(Some sort-of-plausible use cases are running separate HTTP and HTTPS client servers, if your Phabricator install supports both, or running multiple HTTPS servers with different certificates if you have a bizarre VPN.)
Test Plan: Started Aphlict, connected to it, sent myself test notifications, viewed status page, reviewed logfile.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10697
Differential Revision: https://secure.phabricator.com/D15700
Summary:
Fixes T7130. Fixes T7041. Fixes T7012.
Major change here is partitioning clients. In the Phacility cluster, being able to get a huge pile of instances on a single server -- without needing to run a process per instance -- is desirable.
To accomplish this, just bucket clients by the path they connect with. This will let us set client URIs to `/instancename/` and then route connections to a small set of servers. This degrades cleanly in the common case and has no effect on installs which don't do instancing.
Also fix two unrelated issues:
- Fix the timeouts, which were incorrectly initializing in `open()` (which is called during reconnect, causing them to reset every time). Instead, initialize in the constructor. Cap timeout at 5 minutes.
- Probably fix subscriptions, which were using a property with an object definition. Since this is by-ref, all concrete instances of the object share the same property, so all users would be subscribed to everything. Probably.
Test Plan:
- Hit notification status page, saw version bump and instance/path name.
- Saw instance/path name in client and server logs.
- Stopped server, saw reconnects after 2, 4, 16, ... seconds.
- Sent test notification; received test notification.
- Didn't explicitly test the subscription thing but it should be obvious by looking at `/notification/status/` shortly after a push.
Reviewers: joshuaspence, btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7041, T7012, T7130
Differential Revision: https://secure.phabricator.com/D11769
Summary: Ref T7124. The local version of `this` in the handler of 'end' was incremented rather than the global one.
Test Plan: Sending test notifications did not increment the `messages.in` value before this patch even if it should have. With the patch sending test notifications does increment `messages.in`.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7124
Differential Revision: https://secure.phabricator.com/D11648
Summary: Ref T7126. Dictionaries do not have a `length` property unlike arrays resulting in the `getActiveListenerCount()` function returning undefined results. Using the `length` property on the array of keys will work.
Test Plan: Using `wscat` to generate multiple connections to the server, establish new ones and close others while keeping an eye on the displayed `clients.active` value.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Maniphest Tasks: T7126
Differential Revision: https://secure.phabricator.com/D11647
Summary: Ref T7110. Listeners are now removed when clients close the connection to avoid stacking a never ending number of unused listeners.
Test Plan: Using `wscat` to connect to the Aphlict server; when closing the connection a 'Diconnected.' will appear in the logs and the number of active listeners is decreased by one.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Maniphest Tasks: T7110
Differential Revision: https://secure.phabricator.com/D11634
Summary:
In particular, this changes the behavior of NodeJS in the following ways:
- Any attempt to get or modify the global object will result in an error.
- `null` values of `this` will no longer be evaluated to the global object and primitive values of this will not be converted to wrapper objects.
- Writing or deleting properties which have there writeable or configurable attributes set to false will now throw an error instead of failing silently.
- Adding a property to an object whose extensible attribute is false will also throw an error now.
- A functions arguments are not writeable so attempting to change them will now throw an error `arguments = [...]`.
- `with(){}` statements are gone.
- Use of `eval` is effectively banned.
- `eval` and `arguments` are not allowed as variable or function identifiers in any scope.
- The identifiers `implements`, `interface`, `let`, `package`, `private`, `protected`, `public`, `static` and `yield` are all now reserved for future use (roll on ES6).
Test Plan: Verified that Aphlict was still functional.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11430
Summary:
This was broken in D11383. Basically, I had the `ws` module installed globally whilst testing, but the changes made do not work if the `ws` module is installed locally (i.e. in the `./support/aphlict/server/node_modules` directory). After poking around, it seems that this is due to the sandboxing that is done by `JX.require`.
A quick fix is to just //not// use `JX.require`, although you may have a better idea?
The error that is occurring is as follows:
```
<<< UNCAUGHT EXCEPTION! >>>
Error: Cannot find module 'ws'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at extra.require (/usr/src/phabricator/webroot/rsrc/externals/javelin/core/init_node.js:48:16)
at /usr/src/phabricator/support/aphlict/server/lib/AphlictClientServer.js:10:17
at Script.(anonymous function) [as runInNewContext] (vm.js:41:22)
at Object.JX.require (/usr/src/phabricator/webroot/rsrc/externals/javelin/core/init_node.js:58:6)
at Object.<anonymous> (/usr/src/phabricator/support/aphlict/server/aphlict_server.js:102:4)
at Module._compile (module.js:456:26)
>>> Server exited!
```
Test Plan: Now able to start the Aphlict server.
Reviewers: joshuaspence
Reviewed By: joshuaspence
Subscribers: Korvin, epriestley
Maniphest Tasks: T6987
Differential Revision: https://secure.phabricator.com/D11425
Summary: Tidy the Aphlict server by splitting the functionality into two main modules, `AphlictClientServer` and `AphlictAdminServer. There is still further tidying that could be done here, but I feel that this puts us in a much better place.
Test Plan: Sent notifications via `/notification/status/`.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11383
Summary: Currently, the Aphlict server created the log file (if it doesn't exist) but then immediately fails with "Unable to open logfile". It seems that we don't set the permissions correctly.
Test Plan: Deleted log file and was able to start the Aphlict server.
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11351
Summary:
Yeahhhhhhhh....
- Open a "stream", not a "steam".
- Make error easier for users to understand.
- Write to the log in debug mode so the issue is more apparent.
Test Plan:
- Started server with bad permissions, got usable error message.
- Started server with good permissions, got logfile.
Reviewers: joshuaspence, btrahan
Reviewed By: btrahan
Subscribers: Korvin, epriestley
Differential Revision: https://secure.phabricator.com/D11339
Summary:
Fixes T6559. No more flash, use Websockets. This is less aggressive than the earlier version, and retains more server logic.
- Support "wss".
- Make the client work.
- Remove "notification.user" entirely.
- Seems ok?
Test Plan:
In Safari, Firefox and Chrome, saw the browsers connect. Made a bunch of comments/updates and saw notifications.
Notable holes in the test plan:
- Haven't tested "wss" yet. I'll do this on secure.
- Notifications are //too fast// now, locally. I get them after I hit submit but before the page reloads.
- There are probably some other rough edges, this is a fairly big patch.
Reviewers: joshuaspence, btrahan
Reviewed By: joshuaspence, btrahan
Subscribers: fabe, btrahan, epriestley
Maniphest Tasks: T6713, T6559
Differential Revision: https://secure.phabricator.com/D11143
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
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
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
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
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
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
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
