Summary:
See discussion in D10304. There's a lot of context there, but the general idea is:
- Blueprints should manage locks in a granular way during the actual allocation/acquisition phase.
- Optimistic "slot locks" might a pretty good primitive to make that easy to implement and reason about in most cases.
The way these locks work is that you just pick some name for the lock (like the PHID of a resource) and say that it needs to be acquired for the allocation/acquisition to work:
```
...
->needSlotLock("mylock(PHID-XYZQ-...)")
...
```
When you fire off the acquisition or allocation, it fails unless it could acquire the slot with that name. This is really simple (no explicit lock management) and a pretty good fit for most of the locking that blueprints and leases need to do.
If you need to do limit-based locks (e.g., maximum of 3 locks) you could acquire a lock like this:
```
mylock(whatever).slot(2)
```
Blueprints generally only contend with themselves, so it's normally OK for them to pick whatever strategy works best for them in naming locks.
This may not work as well if you have a huge number of slots (e.g., 100TB you want to give out in 1MB chunks), or other complex needs for locks (like you have to synchronize access to some external resource), but slot locks don't need to be the only mechanism that blueprints use. If they run into a problem that slot locks aren't a good fit for, they can use something else instead. For now, slot locks seem like a good fit for the problems we currently face and most of the problems I anticipate facing.
(The release workflows have other race issues which I'm not addressing here. They work fine if nothing races, but aren't race-safe.)
Test Plan:
To create a race where the same binding is allocated as a resource twice:
- Add `sleep(10)` near the beginning of `allocateResource()`, after the free bindings are loaded but before resources are allocated.
- (Comment out slot lock acquisition if you have this patch.)
- Run `bin/drydock lease ...` in two windows, within 10 seconds of one another.
This will reliably double-allocate the binding because both blueprints see a view of the world where the binding is free.
To verify the lock works, un-comment it (or apply this patch) and run the same test again. Now, the lock fails in one process and only one resource is allocated.
Reviewers: hach-que, chad
Reviewed By: hach-que, chad
Differential Revision: https://secure.phabricator.com/D14118
Summary:
Ref T9253. Broadly, this realigns Allocator behavior to be more consistent and straightforward and amenable to intended future changes.
This attempts to make language more consistent: resources are "allocated" and leases are "acquired".
This prepares for (but does not implement) optimistic "slot locking", as discussed in D10304. Although I suspect some blueprints will need to perform other locking eventually, this does feel like a good fit for most of the locking blueprints need to do.
In particular, I've made the blueprint operations on `$resource` and `$lease` objects more purposeful: they need to invoke an activator on the appropriate object to be implemented correctly. Before they invoke this activator method, they configure the object. In a future diff, this configuration will include specifying slot locks that the lease or resource must acquire. So the API will be something like:
$lease
->setActivateWhenAcquired(true)
->needSlotLock('x')
->needSlotLock('y')
->acquireOnResource($resource);
In the common case where slot locks are a good fit, I think this should make correct blueprint implementation very straightforward.
This prepares for (but does not implement) resources and leases which need significant setup steps. I've basically carved out two modes:
- The "activate immediately" mode, as here, immediately opens the resource or activates the lease. This is appropriate if little or no setup is required. I expect many leases to operate in this mode, although I expect many resources will operate in the other mode.
- The "allocate now, activate later" mode, which is not fully implemented yet. This will queue setup workers when the allocator exits. Overall, this will work very similarly to Harbormaster.
- This new structure makes it acceptable for blueprints to sleep as long as they want during resource allocation and lease acquisition, so long as they are not waiting on anything which needs to be completed by the queue. Putting a `sleep(15 * 60)` in your EC2Blueprint to wait for EC2 to bring a machine up will perform worse than using delayed activation, but won't deadlock the queue or block any locks.
Overall, this flow is more similar to Harbormaster's flow. Having consistency between Harbormaster's model and Drydock's model is good, and I think Harbormaster's model is also simply much better than Drydock's (what exists today in Drydock was implemented a long time ago, and we had more support and infrastructure by the time Harbormaster was implemented, as well as a more clearly defined problem).
The particular strength of Harbormaster is that objects always (or almost always, at least) have a single, clearly defined writer. Ensuring objects have only one writer prevents races and makes reasoning about everything easier.
Drydock does not currently have a clearly defined single writer, but this moves us in that direction. We'll probably need more primitives eventually to flesh this out, like Harbormaster's command queue for messaging objects which you can't write to.
This blueprint was originally implemented in D13843. This makes a few changes to the blueprint itself:
- A bunch of code from that (e.g., interfaces) doesn't exist yet.
- I let the blueprint have multiple services. This simplifies the code a little and seems like it costs us nothing.
This also removes `bin/drydock create-resource`, which no longer makes sense to expose. It won't get locking, leasing, etc., correct, and can not be made correct.
NOTE: This technically works but doesn't do anything useful yet.
Test Plan: Used `bin/drydock lease --type host` to acquire leases against these blueprints.
Reviewers: hach-que, chad
Reviewed By: hach-que, chad
Subscribers: Mnkras
Maniphest Tasks: T9253
Differential Revision: https://secure.phabricator.com/D14117
Summary:
Ref T9253. The Drydock allocator is very pseudocodey right now. Particularly, it was written before Blueprints were concrete.
Reorganize it to make its responsibilities and error handling behaviors more clear.
In particular, the Allocator does not manage locks. It's primarily trying to reject allocations which can not possibly work. Blueprints are responsible for locks. See some discussion in D10304.
NOTE: This code probably doesn't work as written, see future diffs.
Test Plan: See future diffs.
Reviewers: hach-que, chad
Reviewed By: hach-que, chad
Subscribers: cburroughs
Maniphest Tasks: T9253
Differential Revision: https://secure.phabricator.com/D14114
Summary:
Ref T9253. Some of the Drydock code is pretty old. This applies standard modernizations to it:
- Modernize Query classes to use stuff like `buildWhereClauseParts()` and `loadStandardPage()`.
- Modernize all the getX() / attachX() stuff. In particular:
- Require and attach implementations to Blueprints.
- Require and attach Blueprints to Resources.
- BlueprintImplementations are now always unique per-Blueprint so they can store/cache state if they want without running over one another.
- BlueprintImplementations are now passed a `$blueprint`, like other similar APIs (this could go various ways but I generally like this as a balance of concerns).
NOTE: This probably doesn't run on its own, I'm just trying to split the next diff (core allocator stuff) up a bit and these pieces are all pretty standard.
Test Plan:
- Not much; see next revision or two.
- Clicked around Resource and Blueprint lists.
Reviewers: chad, hach-que
Reviewed By: chad, hach-que
Maniphest Tasks: T9253
Differential Revision: https://secure.phabricator.com/D14113
Summary:
Ref T9253. See discussion in D13843.
I want to let Drydock blueprints for Almanac services choose those services from a typeahead, but only list appropriate services in the typeahead. To do this:
- Provide a StandardCustomField for an arbitrary datasource.
- Adjust the AlmanacServiceDatasource to allow filtering by service class.
This implementation is substantially the same as the one in D13843, with some adjustments:
- I lifted most of the code in the `Users` standard custom field into a new `Tokenizer` standard custom field.
- The `Users` and `Datasource` custom fields now extend the `Tokenizer` custom field and can share most of the code it uses.
- I exposed this field fully as a configurable field. I don't think anyone will ever use it, but this generality costs us nearly nothing and improves consistency.
- The code in D13843 didn't actually pass the parameters over the wire, since the object that responds to the request is not the same object that renders the field. Use the "parameters" mechanism in datasources to get things passed over the wire.
Test Plan:
- Created a custom "users" field in Maniphest and made sure it still wokred.
- Created a custom "almanc services" field in Maniphest and selected some services for a task.
- With additional changes from D13843, selected an appropriate Almanac service in a new Drydock blueprint.
Reviewers: hach-que, chad
Reviewed By: hach-que, chad
Maniphest Tasks: T9253
Differential Revision: https://secure.phabricator.com/D14111
Summary:
Ref T9253. This comes from a time before Almanac. Now that we have Almanac, it makes much more sense to put this logic there than to try to put it in Drydock itself.
Remove the preallocated host blueprint, a relic of a bygone time.
Test Plan: Grepped for callsites.
Reviewers: hach-que, chad
Reviewed By: hach-que, chad
Maniphest Tasks: T9253
Differential Revision: https://secure.phabricator.com/D14110
Summary: Ref T9253. See D13843 for some discussion. This is very bare-bones for now since I believe that almost all interesting configuration (e.g., credentials) should live in Drydock, although I imagine it getting some configuration eventually.
Test Plan: Used {nav Almanac > Services > Create Service} to create a new service of this type.
Reviewers: hach-que, chad
Reviewed By: hach-que, chad
Maniphest Tasks: T9253
Differential Revision: https://secure.phabricator.com/D14109
Summary:
Fixes T9446. We allow administrators to send "Welcome" mail to bots and mailing lists.
This is harmless (these links do not function), but confusing.
Instead, disable this option in the UI and explain why it is disabled when it is clicked. Also prevent generation of this mail lower in the stack.
Test Plan:
- Viewed a bot page, saw action disabled, clicked it, got explanation.
- Viewed a normal user page, saw action enabled, clicked it, sent welcome email.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9446
Differential Revision: https://secure.phabricator.com/D14134
Summary: These already have a larger font, the extra height isn't needed. Make them the same size as `td`
Test Plan: Look at a bunch of tables.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14135
Summary: You can already pass other icons, but this makes it a bit simpler.
Test Plan: Test Maniphest, Badges
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14131
Summary: These currently use different yellows, and more importantly when pygmentized, is hard to read. This lightens up code embeds and pastes.
Test Plan:
Review Diviner docs, Pastes, and normal code embeds.
{F820471}
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: tycho.tatitscheff, Korvin
Differential Revision: https://secure.phabricator.com/D14123
Summary: Builds a container of paste, makes it smaller on mobile.
Test Plan: View on desktop, tablet, mobile.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14122
Summary: Wraps entire element in the anchor tag, gives a hover state, makes icons bounce.
Test Plan: Hover and click.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14124
Summary: Adds full ROYGBIVP color spectrum, adds basic overflow, collapse protection.
Test Plan: Review small and large panels are various breakpoints.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14120
Summary: Making these a little more fun, a little more flexible and better looking. Will have an update for rSAAS in a bit.
Test Plan:
Make lots of them. Click.
{F815658}
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14115
Summary:
I stumbled across this TODO and was worried that there was a glaring hole in MFA that I'd somehow forgotten about, but the TODO is just out of date.
These actions are rate limited properly by `PhabricatorAuthTryFactorAction`, which permits a maximum of 10 actions per hour.
- Remove the TODO.
- Add `bin/auth unlimit` to make it easier to reset rate limits if someone needs to do that for whatever reason.
Test Plan:
- Tried to brute force through MFA.
- Got rate limited properly after 10 failures.
- Reset rate limit with `bin/auth unlimit`.
- Saw the expected number of actions clear.
{F805288}
Reviewers: chad
Reviewed By: chad
Subscribers: joshuaspence
Differential Revision: https://secure.phabricator.com/D14105
Summary:
Ref T7785. Makes Figlet available without installing the `figlet` package.
The PEAR Text_Figlet code is really sketchy and includes this API, which is quite marvelous:
```
function loadFont($filename, $loadgerman = true)
```
At some point, this should probably be rewritten into a modern style, but it's not trivial since the figlet file format and rendering engine are somewhat complicated. I made some adjustments:
- Broke the dependency on the PEAR core.
- Prevented it from doing any wrong HTML escaping.
- Looked through it for any glaring security or correctness problems.
This code isn't very pretty or modern, but as far as I can tell it's safe and does render Figlet fonts in a reasonable way.
Test Plan: {F803268}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9408, T7785
Differential Revision: https://secure.phabricator.com/D14102
Summary:
Ref T7785. This prepares for (but does not yet use) a pure PHP implementation of Figlet parsing and rendering.
Figlet is somewhat complex, but a parser already exists in PEAR. I'll make sure it's suitable and hook it up in the next diff.
Test Plan: N/A, code not reachable
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9408, T7785
Differential Revision: https://secure.phabricator.com/D14101
Summary:
Ref T7785. Convert the Cowsay Remarkup rule to use a PHP implementation so we don't have to execute an external `cowsay` binary.
I removed some of the default ".cow" files that come with Cowsay because they:
- include Perl code which we can not interpret; or
- are primarily in-jokes or standalone visual puns or artwork rather than usable actors on the grand stage of cowsay; or
- offended my delicate sensibilities.
Users can add new cows to `resources/cows/custom/` if they want to make new cows available.
I have included a majestic original artwork depicting the "Companion Cube" character from //Portal//.
Test Plan: {F802535}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9408, T7785
Differential Revision: https://secure.phabricator.com/D14100
Summary: Ref T9408. This rule is unsafe in principle, and a practical vulnerability has been found by a security researcher.
Test Plan: `grep`
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9408
Differential Revision: https://secure.phabricator.com/D14103
Summary: Fixes T9392, adds some sweet sweet margin to the pager.
Test Plan: See pager with new padding, test different pages, breakpoints.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Maniphest Tasks: T9392
Differential Revision: https://secure.phabricator.com/D14098
Summary:
This reverts commit 1583738842.
See T8646 for discussion. This version of the feature feels terrible on real data.
Test Plan: Strict revert.
Reviewers: chad
Reviewed By: chad
Differential Revision: https://secure.phabricator.com/D14097
Summary:
Fixes T9126. In particular:
- Add "Browse" links to all history views.
- Use icons to show "Browse" and "History" links, instead of text.
- Use FontAwesome.
- Generally standardize handling of these elements.
This might need a little design attention, but I think it's an improvement overall.
Test Plan:
- Viewed repository history.
- Viewed branch history.
- Viewed file history.
- Viewed table of contents on a commit.
- Viewed merged changes on a merge commit.
- Viewed a directory containing an external.
- Viewed a deleted file.
{F788419}
{F788420}
{F788421}
{F788422}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9126
Differential Revision: https://secure.phabricator.com/D14096
Summary:
Ref T8646. This is fairly rough:
This interface is very niche, and not really flexible enough to accommodate other result customization (but I don't think we have any plans here)?
I'm just //summarizing// the content of documents, basically showing the first paragraph of their content, summary, etc. This isn't what Google does: it shows snippets surrounding the actual search terms. However, this is more involved and might be less useful in structured data: for example, I'd imagine that the first line of most phriciton documents, maniphest tasks and Differential revisions really might be the best machine-generatable summary of them. The actual contextual snippeting in Google doesn't often seem hugely useful to me. But this might also not be very useful.
There's not much design, not sure if you had any ideas.
I only implemented this for tasks, revisions and the wiki since those seem most useful.
I'm generally on the fence about this, but it's not a ton of work to swap out for something else later. Maybe we can see how it feels? But happy to toss it or rethink the approach.
Test Plan: {F788026}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T8646
Differential Revision: https://secure.phabricator.com/D14095
Summary: Reachable via the cache config page, restricted to admins only. This makes it convenient to hotfix phabricator without requiring a restart.
Test Plan:
- Local dev machine doesn't have apc, so I get the not installed message.
- Faked the name and isEnabled parameters, verified dialog shows up as expected.
- Didn't test clear code
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: tycho.tatitscheff, joshuaspence, Korvin
Differential Revision: https://secure.phabricator.com/D14064
Summary: Fixes T9351. This is straightforward since this application is now relatively modern and doesn't have any bizarre craziness.
Test Plan:
{F787981}
{F787982}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9351
Differential Revision: https://secure.phabricator.com/D14093
Summary: Fixes T8572. Ideally we would probably just permit this, but clean up the behavior until the day arrives when inline code is actually rewritten.
Test Plan:
- Tried to launch editors in Differential and Diffusion while comments were already open.
- Verified that "Jump to inline" works in both cases.
{F788008}
{F788009}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T8572
Differential Revision: https://secure.phabricator.com/D14094
Summary: As described in T7959, it looks like Diffusion does not provide Mercurial the required HTTP credentials when pulling from an external repository.
Test Plan: Add an external Mercurial repository to Diffusion, that requires HTTP authentication. A private BitBucket repository for example.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley
Projects: #mercurial, #diffusion
Differential Revision: https://secure.phabricator.com/D14092
Summary: Fixes T9380. See that task for discussion. This doesn't feel awesome but is maybe the least-bad fix? I think this name is clearer.
Test Plan: Looked at autoplan in Harbormaster, saw new name.
Reviewers: meitros, chad
Reviewed By: chad
Maniphest Tasks: T9380
Differential Revision: https://secure.phabricator.com/D14088
Summary: Fixes T9369.
Test Plan:
- Sent a mail with Mail.app to `bugs@local.phacility.com`.
- Used "View Raw Mail", copy-pasted it into `mail.txt` on disk.
- Ran `cat mail.txt | ./scripts/mail/manage_mail.php --process-duplicates`.
- Saw task get created and me get added as CC.
- Changed "To" to include another user, ran command again, saw task get created and other user get added as CC.
Reviewers: chad
Reviewed By: chad
Subscribers: Korvin
Maniphest Tasks: T9369
Differential Revision: https://secure.phabricator.com/D14086
Summary:
Ref T9324. When you upload a normal file, we call `willUpload` and then `didUpload`.
When you upload a chunked file, we never call `willUpload`. This can get things out of sync. Make sure we invoke this event for both chunked and non-chunked uploads.
Test Plan: Got cleaner behavior (redirect after all uploads finish) in new Phacility file upload area.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9324
Differential Revision: https://secure.phabricator.com/D14083
Summary:
- Fix missing space before "For example:".
- Fix instruction to run `bin/config set value` instead of `bin/config set key value`.
- Minor cleanup.
Test Plan: Tried to set `files.image-mime-types`, `load-libraries`.
Reviewers: chad
Reviewed By: chad
Differential Revision: https://secure.phabricator.com/D14080
Summary: This is required by Aphront now but not given a default implementation in the base class.
Test Plan: CORGI sites now work.
Reviewers: chad
Reviewed By: chad
Differential Revision: https://secure.phabricator.com/D14079
Summary: Tables headers break all kinds of funky even though we set `word-break` to word presumably because width is not calculated. Just use normal breaks.
Test Plan: Test developer documentation table in sand box, table is readable on desktop, phone break points.
Reviewers: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14063
Summary:
One of the migrations in rPa335004a91 (`20150730.herald.5.sql`) incorrectly swapped "add" and "add blocking" Differential Herald rules.
Swap any rules last modified before this patch was applied back. This is the best we can do without possibly overwriting more recent, intentional data. I'll issue some guidance on this in the changelog.
Test Plan:
- Made a rule, ran patch, no change.
- Changed rule modified time to a few months ago, ran patch, saw swap from non-blocking to blocking.
Reviewers: chad
Reviewed By: chad
Differential Revision: https://secure.phabricator.com/D14061
Summary:
Ref T9346. This mostly allows us to give users additional advice based on which instance they are trying to log in to in the Phacility cluster.
It's also slightly more flexible than `auth.login-message` was, and maybe we'll add some more hooks here eventually.
This feels like it's a sidegrade in complexity rather than really an improvement, but not too terrible.
Test Plan:
- Wrote the custom handler in T9346 to replicate old config functionality.
- Wrote a smart handler for Phacility that can provide context-sensitive messages based on which OAuth client you're trying to use.
See new message box at top (implementation in next diff):
{F780375}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9346
Differential Revision: https://secure.phabricator.com/D14057
Summary:
Ref T7148. I can do most of the export stuff by only modifying the Instances codebase, but want to upload all the backups and exports as temporary files and can't currently do this via the API.
Make the necessary API changes so that the export workflow can use them when it gets built out.
Test Plan: See next diff. Uploaded files with `arc upload --temporary` and saw them upload as temporary files.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T7148
Differential Revision: https://secure.phabricator.com/D14055
Summary: There are a handful of places I've been wanting to use a button here. Adds that ability and uses in app launcher.
Test Plan:
Test Applicatons->Launcher at desktop, mobile, tablet breakpoints
{F780453}
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14059
Summary:
Fixes T9339.
- Don't show edit control for locked config at all.
- Don't show a "Cancel" button either.
- Change "Value" label to "Database Value" for non-custom config.
- Highlight effective value.
- Move examples under current state.
- Tweak some formatting.
Test Plan: {F777878}
Reviewers: chad, avivey
Reviewed By: chad, avivey
Subscribers: avivey
Maniphest Tasks: T9339
Differential Revision: https://secure.phabricator.com/D14054
Summary: Fixes T9314. Functionally phui-status-list should get moved off a table, but that's another day. This catches many other possible issues.
Test Plan: Review changes on a narrow browser.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Maniphest Tasks: T9314
Differential Revision: https://secure.phabricator.com/D14036
Summary: Fixes T9264. I'm surprised this hasn't come up before, but any long string or URL in remarkup will overflow and cause remarkup areas to scroll. Prefer breaking these words.
Test Plan:
Review a timeline feed in Differential and a Ponder answer.
{F768105}
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Maniphest Tasks: T9264
Differential Revision: https://secure.phabricator.com/D14018
Summary: Makes the New Comment, See Comments more obviously placed to find.
Test Plan: Review new CSS, answer question, comment, etc.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D14043
Summary:
Ref T7173. Depends on D14049. Now that Phacility can install custom exception handlers, this puts enough information on the exception so that we can figure out what to do with it.
- Generally modernize some of this code.
- Add some more information to PolicyExceptions so the new RequestExceptionHandler can handle them properly.
Test Plan: Failed authorizations, then succeeded authorizations. See next diff.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T7173
Differential Revision: https://secure.phabricator.com/D14050
Summary:
Ref T1806. Ref T7173. Depends on D14047.
Currently, all exception handling is in this big messy clump in `AphrontDefaultApplicationConfiguration`.
Split it out into modular classes. This will let a future change add new classes in the Phacility cluster which intercept particular exceptions we care about and replaces the default, generic responses with more useful, tailored responses.
Test Plan:
{F777391}
- Hit a Conduit error (made a method throw).
- Hit an Ajax error (made comment preview throw).
- Hit a high security error (tried to edit TOTP).
- Hit a rate limiting error (added a bunch of email addresses).
- Hit a policy error (tried to look at something with no permission).
- Hit an arbitrary exception (made a randomc ontroller throw).
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T1806, T7173
Differential Revision: https://secure.phabricator.com/D14049
Summary:
Ref T1806. Ref T7173. Context here is that I want to fix "you can not log in to this instance" being a confusing mess with an opaque error. To do this without hacks, I want to:
- clean up some exception handling behavior (this diff);
- modularize exception handling (next diff);
- replace confusing, over-general exceptions with tailored ones in the Phacility cluster, using the new modular stuff.
This cleans up an awkward "AphrontUsageException" which does some weird stuff right now. In particular, it is extensible and extended in one place in Diffusion, but that extension is meaningless.
Realign this as "AphrontMalformedRequestException", which is a better description of what it is and does: raises errors before we can get as far as normal routing and site handling.
Test Plan: Hit some of these exceptions, saw the expected "abandon all hope" error page.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T1806, T7173
Differential Revision: https://secure.phabricator.com/D14047
