Summary:
See PHI158. In the RefEngine, we test if any old branch positions have been removed from the repository. This is uncommon (but not impossible) in Mercurial, and corresponds to users deleting branches in Git.
Currently, we end up running `hg log` for each position, in parallel. Because of Python's large startup overhead, this can be resource intensive for repositories with a large number of branches.
We have to do this in the general case because the caller may be asking us to resolve `tip`, `newfeature`, `tip~3`, `9`, etc. However, in the specific case where the refs are 40-digit hashes, we can bulk resolve them if they exist, like this:
```
hg log ... --rev (abcd or def0 or ab12 or ...)
```
In the general case, we could probably do less of this than we currently do (instead of testing all old heads, we could prune the list by removing commits which we know are still pointed to by current heads) but that's a slightly more involved change and the effect here is already dramatic.
Test Plan:
Verified that CPU usage drops from ~110s -> ~0.9s:
Before:
```
epriestley@orbital ~/dev/phabricator $ time ./bin/repository refs nss
Updating refs in "nss"...
Done.
real 0m14.676s
user 1m24.714s
sys 0m21.645s
```
After:
```
epriestley@orbital ~/dev/phabricator $ time ./bin/repository refs nss
Updating refs in "nss"...
Done.
real 0m0.861s
user 0m0.882s
sys 0m0.213s
```
- Manually resolved `blue`, `tip`, `9`, etc., got expected results.
- Tried to resolve invalid hashes, got expected result (no resolution).
Reviewers: amckinley
Reviewed By: amckinley
Differential Revision: https://secure.phabricator.com/D18717
Summary:
Ref T2543. These are currently numeric values, like "0" and "3". I want to replace them with strings, like "accepted", and move definitions from Arcanist to Phabricator.
To set the stage for this, reduce the number of callsites where Phabricator invokes `ArcanistDifferentialRevisionStatus`.
This is just the easy ones. I'll hold this until the release cut.
Test Plan:
- Called `differential.find`.
- Called `differential.getrevision`.
- Called `differential.query`.
- Removed all reviewers from a revision, saw warning.
- Abandoned the no-reviewers revision, no more warning.
- Attached a revision to a task to get it to show the state icon with the status on a tooltip.
- Viewed revision bucketing on dashboard.
- Used `bin/search index` to reindex a revision.
- Hit the "Land Revision" endpoint.
I didn't explicitly test these cases:
- Doorkeeper Asana integration, since setup takes a thousand years.
- Disambiguation logic when multiple hashes match, since setup is also very involved.
- Releeph because it's Releeph.
Reviewers: chad
Reviewed By: chad
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T2543
Differential Revision: https://secure.phabricator.com/D18339
Summary:
Fixes T12942.
- Adds binary version and path information to {nav Config > Version Information}.
- Replaces old code all over the place with new consolidated code.
Test Plan:
{F5073531}
Also faked some cases of missing binaries, bad versions, etc.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12942
Differential Revision: https://secure.phabricator.com/D18306
Summary: This just cleans up a method call that was missed in D15986. It's been causing fatal errors in one of our workflows.
Test Plan: Grep'd for other instances of `withIsTag` and didn't find any
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, yelirekim
Differential Revision: https://secure.phabricator.com/D17299
Summary: Ref T9028. When selecting refs, pretend refs in "refs/remotes/" that we don't otherwise recognize don't exist, since it looks like these are probably remotes //of the remote// we're observing, and who knows what state they're in.
Test Plan: Used `bin/repository discover --verbose` to verify that these named refs no longer appear in the list.
Reviewers: chad, joshuaspence
Reviewed By: joshuaspence
Maniphest Tasks: T9028
Differential Revision: https://secure.phabricator.com/D16136
Summary:
Ref T9028. Fixes T6878. Currently, we only fetch and discover branches. This is fine 99% of the time but sometimes commits are pushed to just a tag, e.g.:
```
git checkout <some hash>
nano file.c
git commit -am '...'
git tag wild-wild-west
git push origin wild-wild-west
```
Through a similar process, commits can also be pushed to some arbitrary named ref (we do this for staging areas).
With the current rules, we don't fetch tag refs and won't discover these commits.
Change the rules so:
- we fetch all refs; and
- we discover ancestors of all refs.
Autoclose rules for tags and arbitrary refs are just hard-coded for now. We might make these more flexible in the future, or we might do forks instead, or maybe we'll have to do both.
Test Plan:
Pushed a commit to a tag ONLY (`vegetable1`).
<cf508b8de6>
On `master`, prior to the change:
- Used `update` + `refs` + `discover`.
- Verified tag was not fetched with `git for-each-ref` in local working copy and the web UI.
- Verified commit was not discovered using the web UI.
With this patch applied:
- Used `update`, saw a `refs/*` fetch instead of a `refs/heads/*` fetch.
- Used `git for-each-ref` to verify that tag fetched.
- Used `repository refs`.
- Saw new tag appear in the tags list in the web UI.
- Saw new refcursor appear in refcursor table.
- Used `repository discover --verbose` and examine refs for sanity.
- Saw commit row appear in database.
- Saw commit skeleton appear in web UI.
- Ran `bin/phd debug task`.
- Saw commit fully parse.
{F1689319}
Reviewers: chad
Reviewed By: chad
Subscribers: avivey
Maniphest Tasks: T6878, T9028
Differential Revision: https://secure.phabricator.com/D16129
Summary:
Ref T4292. For hosted, clustered repositories we have a good way to increment the internal version of the repository: every time a user pushes something, we increment the version by 1.
We don't have a great way to do this for observed/remote repositories because when we `git fetch` we might get nothing, or we might get some changes, and we can't easily tell //what// changes we got.
For example, if we see that another node is at "version 97", and we do a fetch and see some changes, we don't know if we're in sync with them (i.e., also at "version 97") or ahead of them (at "version 98").
This implements a simple way to version an observed repository:
- Take the head of every branch/tag.
- Look them up.
- Pick the biggest internal ID number.
This will work //except// when branches are deleted, which could cause the version to go backward if the "biggest commit" is the one that was deleted. This should be OK, since it's rare and the effects are minor and the repository will "self-heal" on the next actual push.
Test Plan:
- Created an observed repository.
- Ran `bin/repository update` and observed a sensible version number appear in the version table.
- Pushed to the remote, did another update, saw a sensible update.
- Did an update with no push, saw no effect on version number.
- Toggled repository to hosted, saw the version reset.
- Simulated read traffic to out-of-sync node, saw it do a remote fetch.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T4292
Differential Revision: https://secure.phabricator.com/D15986
Summary:
Ref T11051. This is still not as clear as it should be, but is at least working as intended now.
I believe this part of the code just never worked. The test plan on D10489 didn't specifically cover it.
Test Plan:
Did this sort of thing in a repository:
```
$ git checkout -b featurex
$ echo x >> y
$ git commit -am wip
$ arc diff
```
Then I simulated just pushing it (this flow is a little more involved than necessary):
```
$ arc land --hold
$ git commit --amend
$ # remove all metadata -- particularly, "Differential Revision"!
$ git push HEAD:master
```
I got a not-great but more-useful dialog:
{F1667318}
Prior to this change, the hash match was incorrectly not reported at all.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11051
Differential Revision: https://secure.phabricator.com/D15989
Summary: Fixes T10815. We already recovered reasonably from this for cluster repositories, but not for non-cluster repositories.
Test Plan:
- Viewed cluster and non-cluster empty Git repository.
- Viewed cluster and non-cluster empty Mercurial repository.
- Viewed cluster and non-clsuter empty hosted SVN repository.
- Viewed cluster and non-cluster empty observed SVN repository.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10815
Differential Revision: https://secure.phabricator.com/D15878
Summary:
Ref T4292. Ref T10366. Depends on D15751. Today, generating repository commands is purely a function of the repository, so they use protocols and credentials based on the repository configuration.
For example, a repository with an SSH "remote URI" always generate SSH "remote commands".
This needs to change in the future:
- After T10366, repositories won't necessarily just have one type of remote URI. They can only have one at a time still, but the repository itself won't change based on which one is currently active.
- For T4292, I need to generate intracluster commands, regardless of repository configuration. These will have different protocols and credentials.
Prepare for these cases by separating out command construction, so they'll be able to generate commands in a more flexible way.
Test Plan:
- Added unit tests.
- Browsed diffusion.
- Ran `bin/phd debug pull` to pull a bunch of repos.
- Ran daemons.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T4292, T10366
Differential Revision: https://secure.phabricator.com/D15752
Summary: Fixes T8826. Git tracks an "author date", which may be different from the "committed date". We don't currently extract/show this; do so.
Test Plan: {F1059235}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T8826
Differential Revision: https://secure.phabricator.com/D14995
Summary:
In Mercurial 3.2 the `locate` command was deprecated in favor of `files` command. This change updates the DiffusionLowLevelMercurialPathsQuery command to conditionally use `locate` or `files` based on the version of Mercurial used.
Closes T7375
Test Plan:
My test/develop Phabricator instance is setup to run Mercurial 3.5.1.
The test procedure to verify valid file listings are being returned:
1. I navigated to `http://192.168.0.133/conduit/method/diffusion.querypaths/`
2. I populated the following fields:
- path: `"/"`
- commit: `"d721d5b57fc9ef72e47ff9d4e0c583d74a46590c"`
- callsign: `"HGTEST"`
3. I submitted request and verified that result contained all files in the repository:
```
{
"0": "README",
"1": "alpha/beta/trifle",
"2": "test/Chupacabra.cow",
"3": "test/socket.ks"
}
```
I repeated the above steps after setting up Mercurial 2.6.2, which I installed in the following manner:
1. I downloaded Mercurial 2.6.2 source and run `make local` which will only compile it to work from its own directory (`/opt/mercurial-2.6.2`)
2. I linked `/usr/local/bin/hg -> /opt/mercurial-2.6.2/hg` (there's also a `/usr/bin/hg` which is a link to `/usr/local/bin/hg`)
3. I navigated to my home directory and verify that `hg --version` returns 2.6.2.
4. I restarted phabricator services (probably unnecessary).
With the Multimeter application active
1. I verified that `/usr/local/bin/hg` referred to version 2.6
2. I ran the same conduit call from the conduit application
3. I verified that `http://192.168.0.133/multimeter/?type=2&group=label` incremented values for `bin.hg locate`.
4. I swapped out mercurial versions for 3.5.1
5. I ran the same conduit call from the conduit application
6. I verified that `http://192.168.0.133/multimeter/?type=2&group=label` incremented values for `bin.hg files`
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin
Maniphest Tasks: T7375
Differential Revision: https://secure.phabricator.com/D14253
Summary:
Ref T9513. I checked this briefly but didn't do a very thorough job of it.
- Don't try to query merges for Subversion, since it doesn't support them.
- Fix up "existsquery" to work properly (and efficiently) for both hosted and imported repositories.
- Fix up "parentsquery" to have similar behavior on invalid commits to other VCSes (throw an exception).
Test Plan:
- No more merges warning on SVN.
- Hosted SVN gets the right exists result now.
- Visiting "r23980283789287" now 404's instead of "not parsed yet".
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9513
Differential Revision: https://secure.phabricator.com/D14239
Summary:
Fixes T7982.
- When resolving branches, make sure they get type `'branch'`.
- Correctly resolve refs when a repository has a branch and tag with the same name.
Test Plan: Disabled ref cache and resolved refs in a Git repository with a 'master' tag and a 'master' branch. Saw refs resolve accurately.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7982
Differential Revision: https://secure.phabricator.com/D12609
Summary: Fixes T7100. In the bizarre case that a Git repository has a branch and tag with the same name, don't resolve branch names into tag names.
Test Plan: Test repo with branch and tag both named "git" no longer reports ambiguity.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7100
Differential Revision: https://secure.phabricator.com/D12553
Summary: Ref T6160. Ref T7100. Mercurial branch heads can be closed; track this state so we can be smarter about it.
Test Plan: Closed a branch, run `repository update`, saw it close in the cursor table.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T6160, T7100
Differential Revision: https://secure.phabricator.com/D12550
Summary:
Ref T7100. Ref T7108. Ref T6160. Several issues:
- High load for mercurial repositories with huge numbers of branches (T7108).
- In Mercurial, we resolve refs individually (one `hg` call per ref).
- Each repository update also updates all refs, which requires resolving all of them.
- For repositories with a huge number of branches,
- We don't distinguish between closed branches (a Mercurial-only concept) and open branches (T6160).
- In Git, when a branch is merged, it ceases to exist.
- In Mercurial, when a branch is merged, it still exists, it's just "closed". Normally, no one cares about these branches.
- In the low-level query, correctly identify which refs we resolve as branches.
- In the low-level query, correctly mark closed branches as closed.
- This marginally improves ref handling in general (see T7100).
Test Plan:
{F384366}
{F384367}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T6160, T7108, T7100
Differential Revision: https://secure.phabricator.com/D12548
Summary:
Ref T7100. When a user navigates to a branch like "default" which is ambiguous:
- don't fatal;
- choose one alternative to resolve it to (currently more or less at random);
- sometimes show what we did in the UI.
Also, add a new table to show the alternatives.
This will get refined in followup changes.
Test Plan:
{F384335}
{F384336}
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7100
Differential Revision: https://secure.phabricator.com/D12547
Summary:
Ref T2783. With service-oriented calls, we take a larger performacne hit than necessary resolving refs.
Instead of resolving refs over the wire, try to resolve them from the database first. This can resolve almost all refs (commit hashes, branch and tag names).
This can't resolve weird refs like `master~50`, and obviously can't resolve invalid refs. In those cases we'll go back to the old logic, call `diffusion.resolverefs`, and end up with the right result.
Test Plan:
- Browsed repositories in Diffusion.
- Verified that service repositories no longer make unnecessary `diffusion.resolverefs` calls for common refs (branch names, commit hashes).
- Resolved refs like `master~50`, saw call to underlying VCS and correct result.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T2783
Differential Revision: https://secure.phabricator.com/D11476
Summary: Fixes T6395. Ref T6350. I guess I missed this code spot in prior testing / I definitely didn't run an empty commit through it. Works now though.
Test Plan: made an empty commit and observed stuck importing status and errors in phd log. applied patch and commit successfully imported with no errors. made another empty commit and it imported as well
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T6350, T6395
Differential Revision: https://secure.phabricator.com/D10746
Summary:
I am not sure how valuable this is *as is* - I think it needs different explanations for what happened in mercurial or subversion? I do not know what those explanations are.
Made an error in D10485 - the $hashes that were saved is an array of objects, so it ends up turning into garbage via the wonders of serialization and de-serialization. Fix that by explicitly saving the tree hash.
I would like to make this work for the other VCS types we support, add the "undo / nope" button and call it fixed.
Ref T3686.
Test Plan: clicked "explan why" and saw why
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T5693, T3686
Differential Revision: https://secure.phabricator.com/D10489
Summary: Fixes T4387.
Test Plan: Setup a mercurial repository for rabbitmq-server. Browsed around it and things looked good.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: epriestley, Korvin
Maniphest Tasks: T4387
Differential Revision: https://secure.phabricator.com/D10380
Summary:
Fixes T5839. If a repository has been force pushed and garbage collected, we might have a ref cursor in the database which still points at the old commit (which no longer exists).
We'll then run a command like `git log <new hash> --not <old hash>` to figure out which commits are newly pushed, and this will bomb out because `<old hash>` is invalid.
Instead, validate all the `<old hash>` values before we try to make use of them.
Test Plan:
- Forced a repository into a bad state by mucking with the datbase, generating a reproducible failure similar to the one in T5839.
- Applied patch.
- `bin/repository update <callsign> --trace` filtered the bad commit and put the repository into the right state.
- Saw new commits recognized correctly.
- Ran `bin/repository update <callsign>` for a Mercurial and SVN repo as a sanity check.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5839
Differential Revision: https://secure.phabricator.com/D10226
Summary:
Fixes T5304. Mercurial features a "{branches}" template keyword, documented as:
```
branches List of strings. The name of the branch on which the
changeset was committed. Will be empty if the branch name
was default.
```
At some time long in the past, I misinterpreted this to mean "list of branches where the branch head is a descendant of the commit". It is more like "list of zero or one elements, possibly containing the name of the branch the commit was originally made to, if that branch was not 'default'".
In fact, it seems like this is because a //very// long time in the past, Mercurial worked roughly like I expected:
> Ages ago (2005), we had a very different and ultimately unworkable
> approach to named branches that worked vaguely like .hgtags and allowed
> multiple branch names per revision.
http://marc.info/?l=mercurial-devel&m=129883069414855
This appears to be deprecated in modern Mercurial (it's not in the modern web documentation) although I can't find a commit about it so maybe that's just a documentation issue.
In any case, `{branches}` seems to never be useful: `{branch}` provides the same information without the awkward "default-if-empty" case.
Switch from `{branches}` to either `{branch}` (where that's good enough, notably in the hook engine) or `(descendants(%s) and head())`, which is equivalent to `--contains` in Git.
This fixes pushing to branches with spaces in their names, and makes the "Branches" / "Contains" queries moderately more consistent.
Test Plan:
- Pushed to a Mercurial branch with a space in it.
- Viewed list of branches in a Mercurial repository.
- Viewed containing branches of a Mercurial commit in Diffusion.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T5304
Differential Revision: https://secure.phabricator.com/D9453
Summary: Ran `arc lint --apply-patches --everything` over rP, mainly to change double quotes to single quotes where appropriate. These changes also validate that the `ArcanistXHPASTLinter::LINT_DOUBLE_QUOTE` rule is working as expected.
Test Plan: Eyeballed it.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin, hach-que
Differential Revision: https://secure.phabricator.com/D9431
Summary: Ref T4327. At some point these two very similar classes got introduced. Collapse `DiffusionBranchInformation` into the nearly identical `DiffusionRepositoryRef`, which enjoys slightly more generality and support.
Test Plan: Viewed branch overview and detail pages. Ran `repository refs` and `repository discover`. Grepped for removed symbols.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4327
Differential Revision: https://secure.phabricator.com/D8002
Summary: Ref T4195. Ref T2783. We have an old-school implementation of this; move it into a LowLevel query and make callers all run through Conduit. I need the LowLevel query for hooks, to implement an "is merge commit" Herald rule.
Test Plan:
- Ran query via Conduit for SVN, Mercurial, Git.
- Parsed a commit which closed a revision, attach/closed worked correctly.
- Browsed Diffusion.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4195, T2783
Differential Revision: https://secure.phabricator.com/D7808
Summary: Ref T4195. I need to query commit metadata to figure out which revision a commit is associated with. Move this out of the MessageParser so the code can be called from the HookEngine.
Test Plan: Used `reparse.php` to reparse a variety of SVN, Mercurial and Git commits. Used `var_dump()` to verify sensible fields were returned.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4195
Differential Revision: https://secure.phabricator.com/D7805
Summary: Ref T4195. I need this for the Herald pre-commit rules, and it generally simplifies things.
Test Plan: Used `reparse.php` plus `var_dump()` to inspect refs in Git, Mercurial and SVN repos. They all looked correct and reparsed correctly.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4195
Differential Revision: https://secure.phabricator.com/D7804
Summary: Ref T4195. Even though we use `svnlook` in the hook itself, I need this query elsewhere, so provide it and merge the classes into one which does the right thing.
Test Plan:
- Used `reparse.php` to reparse messages for Git, SVN and Mercurial commits, using `var_dump()` to examine the commit refs for sanity.
- Used `reparse.php` to reparse changes for an SVN commit.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4195
Differential Revision: https://secure.phabricator.com/D7800
Summary: Ref T4195. Same as D7793, but for mercurial. (As usual, SVN needs some goofy nonsense instead, so the next diff will just make this field work.)
Test Plan: Ran `reparse.php` on Git and Mercurial commits, var_dump'd the output and it looked correct.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4195
Differential Revision: https://secure.phabricator.com/D7795
Summary: Ref T4195. I need to issue this command from the pre-commit hook to get commit bodies for hooks.
Test Plan: Ran `reparse.php --message --trace` and dumped the $ref, which looked correct.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T4195
Differential Revision: https://secure.phabricator.com/D7793
Summary:
Ref T615. Ref T4237. With `--debug`, Mercurial will echo an "ignoring untrusted configuration option" warning **to stdout** if `.hgrc` has the wrong owner.
However, we need `--debug` to make `{parents}` usable, at least until the patches I got into the upstream are widely deployed. So after getting `--debug` output, strip off any leading warnings.
These warnings should always be in English, at least, since we set `LANG` explicitly.
Test Plan: Unit tests. @asherkin, maybe you can confirm this? I can't actually get the warning, but I think my `hg` in PATH is just a bit out of date.
Reviewers: asherkin, btrahan
Reviewed By: asherkin
CC: asherkin, aran
Maniphest Tasks: T615, T4237
Differential Revision: https://secure.phabricator.com/D7784
Summary:
Ref T1493. Diffusion has some garbagey behavior for things we can't resolve. Common cases are:
- Looking at a branch that doesn't exist.
- Looking at a repository with no branches.
- Looking at a commit that doesn't exist.
- Looking at an empty repository.
In these cases, we generally fatal unhelpfully. I want to untangle this mess.
This doesn't help much, but does clean things up a bit. We currently have two separate query paths, "stablecommitname" and "expandshortcommit". These are pretty much doing the same thing -- taking some ref like "master" or "default" or a tag name or part of a commit name, and turning it into a full commit name. Merge them into a single "resolverefs" method.
This simplifies the code a fair bit, and gives us better error messages. They still aren't great, but they're like this now:
Ref "7498aec194ecf2d333e0e2baddd9d5cdf922d7f1" is ambiguous or does not exist.
...instead of just:
ERR-INVALID-COMMIT
Test Plan: Looked at Git, Mercurial and Subversion repositories that were empty and non-empty. Looked at branches/heads. Tried to look at invalid commits. Looked at tags. All of this still works, and some behaviors are a bit better than they used to be.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1493
Differential Revision: https://secure.phabricator.com/D7484
Summary: Ref T1493. Consolidate these a bit; they might need some more magic once we do `--noupdate` checkouts. Mostly just trying to clean up and centralize this code a bit.
Test Plan: Viewed and `bin/repository discover`'d Mercurial repos with and without any branches.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran
Maniphest Tasks: T1493
Differential Revision: https://secure.phabricator.com/D7480
Summary: Ref T2230. This cleans up D7442, by using `git for-each-ref` everywhere we can, in a basically reasonable way.
Test Plan:
In bare and non-bare repositories:
- Ran discovery with `bin/repository discover`;
- listed branches on `/diffusion/X/`;
- listed tags on `/diffusion/X/`;
- listed tags, branches and refs on `/diffusion/rXnnnn`.
Reviewers: btrahan, avivey
Reviewed By: avivey
CC: aran
Maniphest Tasks: T2230
Differential Revision: https://secure.phabricator.com/D7447
