Summary: Fixes T12253.
Test Plan:
- Before change: used "Quote Comment", saw "In null, alice wrote:" in quoted text.
- After change: used "Quote Comment", saw proper reference to the commit/page. Clicked reference, was sent to the comment properly.
{F2859093}
Reviewers: chad, avivey
Reviewed By: avivey
Maniphest Tasks: T12253
Differential Revision: https://secure.phabricator.com/D17343
Summary: Fixes T12243. That error occured due to network flakiness with some mounted filesystems so I'm not sure how best to simulate it. But you can look and see that the PhutilProxyException does indeed expect an exception as its second arg.
Test Plan: Look at method signature... look at callsite... now back at the method. Smile and nod.
Reviewers: #blessed_reviewers, yelirekim, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley
Maniphest Tasks: T12243
Differential Revision: https://secure.phabricator.com/D17335
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 T10978. I'm inching toward cleaning up our audit state. Two issues are:
- Authored commits show up in "Ready to Audit", but should not.
- Unreachable commits (like that stacked of unsquashed stuff) show up too, but we don't really care about them.
Kick authored stuff out of the "Ready to Audit" bucket and hide unreachable commits by default, with constraints for filtering. Also give them a closed/disabled/strikethru style.
Test Plan:
- Viewed audit buckets.
- Searched for reachable/unreachable commits.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17279
Summary: Ref T10978. This code (mostly related to the old ADD_AUDIT transaction and some to the "store English text in the database" audit reasons) is no longer reachable.
Test Plan:
Grepped for removed symbols:
- withAuditStatus
- getActionNameMap (unrelated callsites exist)
- getActionName (unrelated callsites exist)
- getActionPastTenseVerb
- addAuditReason
- getAuditReasons
- auditReasonMap
Also audited some commits.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17267
Summary:
Ref T10978. Currently, during commit import, we write an "Audit Not Required" auditor for commits which don't require an audit.
This auditor is used to power the "Commits in this package" query in Owners.
This conflates audits and commit/package membership. I think it might even predate edges. Code needs to dance around this mess and we get the wrong result in some cases, since auditors are now editable.
Instead, write an explicit edge which just says "this commit is part of such-and-such packages". Then use that to run the query. Logical!
I'll issue guidance on this but I'm not migrating it, since it fixes itself going forward and only really affects the UI in Owners.
Test Plan:
- Ran `bin/audit update-owners` with various arguments.
- Viewed packages in web UI, saw them load the proper commits.
- Queried by packages in Diffusion explicitly.
- Clicked the "View All" link in Owners and got to the right search UI.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17264
Summary:
Ref T10978. Convert "Add Auditors" rules in Herald to modern modular transactions.
Here and in D17262 (and in the next change), I've removed "audit reasons". There are several reasons for this:
- They're pretty hacky.
- They store English-language (well, usually) text in the database, which can't be translated.
- I think they may not be necessary. When they were written, Herald did not apply transactions, so it was less clear when Herald was doing something. In modern code, it does, so Herald auditors are clear. The owenrs/package rules are now more clear, too. I'd like to see evidence that confusion still exists before rebuilding this feature in a modern, translatable way, since I think we may not need it at all.
Test Plan: Ran `bin/repository reparse --herald <commit>` to re-run Herald rules. Saw rules add auditors appropriately.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17263
Summary: Ref T10978. This was introduced in D6923 in 2013 as a deprecated method (before methods were extensible) and has only ever been deprecated. It no longer works after D17250 (despite my mistaken claim there that we never had an API for actions), and has been superceded by `diffusion.commit.edit` which is a modern, fully-power method.
Test Plan: Viewed Conduit console, no longer saw method.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17254
Summary:
Fixes T2393. This allows authors to explicitly say "I think I fixed everything, please accept my commit now thank you".
Also improves behavior of "re-accept" and "re-reject" after new auditors you have authority over get added.
Test Plan:
- Kicked a commit back and forth between an author and auditor by alternately using "Request Verification" and "Raise Concern".
- Verified it showed up properly in bucketing for both users.
- Accepted, added a project, accepted again (works now; didn't before).
- Audited on behalf of projects / packages.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T2393
Differential Revision: https://secure.phabricator.com/D17252
Summary:
Ref T2393. We had three copies of this code ("which packages/projects can a user accept on behalf of?"). I removed one in D17250. This consolidates the other two.
This still isn't perfect and it should probably live in a Query or something some day, but there's some weird stuff going on with the viewer in the editor context, and at least the code handles the viewer correctly now and isn't living somewhere weird and totally unrelated to auditing, and the callsites don't need to do a bunch of extra work.
This also moves towards fixing the "re-accept if you've already accepted but then a new package you have authority over was added" bug, which we fixed recently in Differential. This should be less common in Audit, but should still be fixed.
Test Plan: Viewed and audited commits with a mixture of user, package, and project auditors. Saw actions apply to the expected set of auditors.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T2393
Differential Revision: https://secure.phabricator.com/D17251
Summary: Ref T2393. This has been obsoleted by stacked actions and is no longer used.
Test Plan: Grepped for callsites, viwed commits.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T2393
Differential Revision: https://secure.phabricator.com/D17249
Summary: Ref T2393. This adds a state-change transaction hint to Audit, like we have in Differential. This is partly for consistency and partly to make it more clear what should happen next.
Test Plan: {F2477848}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T2393
Differential Revision: https://secure.phabricator.com/D17243
Summary:
Fixes T6024. Ref T12121. Currently, we show build status in commit history tables; show audit status alongside it.
Also:
- Change the "Author/Committer" header to just "Author"; I think it's reasonably obvious what "x/y" means (if you can't guess, you can click the commit and likely figure it out) and this gives us a little more space.
- Make the audit list look more like the corresponding list in Differential, with similar formatting.
Test Plan:
- Viewed history of a repostiory, saw audit status.
- Viewed a merge commit, saw audit status in the list of merged commits.
- Viewed a commit search results list.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12121, T6024
Differential Revision: https://secure.phabricator.com/D17227
Summary: Fixes T5889. You can't write a rule like "if no other Herald rules did anything...", but you can use this rule to check for Owners or an explicit "Auditors" field doing things.
Test Plan: Using the test console, ran an "Auditors" rule against a commit with and without an auditor. Got expected pass/fail outcomes.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T5889
Differential Revision: https://secure.phabricator.com/D17221
Summary: Ref T5867. Instead of hard-coding projects, tasks and repositories, let EditEngines say "I want a quick create item" so third-party code can also hook into the menu without upstream changes.
Test Plan: Saw same default items in menu.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T5867
Differential Revision: https://secure.phabricator.com/D17215
Summary: Fixes T6660. Uses the new stuff in Audit to build an EditEngine-aware icon.
Test Plan: {F2364304}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T6660
Differential Revision: https://secure.phabricator.com/D17208
Summary: Ref T10978. This is bare bones, but the SearchEngine is at least mostly in reasonable shape now, so get it in place and freeze the old stuff. I previously froze `audit.query`, which did much the same thing.
Test Plan: Issued some queries with the API, technically got results back.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17194
Summary:
Fixes T9430. Fixes T9362. Fixes T9544. This changes the default view of Audit to work like Differential, where commits you need to audit or respond to are shown in buckets.
This is a bit messy and probably needs some followups. This stuff has changed from a compatibility viewpoint:
- The query works differently now (but in a better, modern way), so existing saved queries will need to be updated.
- I've removed the counters from the home page instead of updating them, since they're going to get wiped out by ProfileMenu soon anyway.
- When bucketed queries return too many results (more than 1,000) we now show a warning about it. This isn't greaaaat but it seems good enough for now.
Test Plan: {F2351123}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T9430, T9362, T9544
Differential Revision: https://secure.phabricator.com/D17192
Summary: Ref T11114. Ref T10978. These hadn't made it over to EditEngine yet.
Test Plan:
- Took various actions on revisions and commits.
- Used `bin/mail show-outbound --id ...` to examine the "Vary Subject", saw it properly generate "[Accepted]", "[Resigned]", etc.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11114, T10978
Differential Revision: https://secure.phabricator.com/D17191
Summary: Ref T10978. Since "Resigned" is a status in Audit, you could repeatedly resign. This is confusing; prevent it.
Test Plan: Tried to resign twice; was only allowed to resign once.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17187
Summary:
Fixes T6630. Long ago, "Audit", "Diffusion" and "Repositories" were three totally separate applications.
This separation isn't useful and the three rapidly became intertwined. Ideally, they would all be one application.
This doesn't take us quite that far, but Audit no longer has any controllers and has little actual behavior.
The "Audit" screen has always just been a SearchEngine view of commits with some filters on it, and this formalizes that and puts a link to it in Diffusion. (This view has other uses, too.)
Test Plan:
- Accessed audit from home page.
- Accessed audit/commits from Diffusion.
- Could no longer uninstall Audit on its own.
- Grepped for `/audit/` and `AuditApplication`.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T6630
Differential Revision: https://secure.phabricator.com/D17186
Summary:
Ref T10978. This prepares for swapping the comment UI to stacked actions.
These are only accessible via the API.
Test Plan: Used the API to accept, raise concern with, and reject commits.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17182
Summary: Ref T10978. Ref T7676. Make auditors work more like reviewers, so they can be freely added or removed.
Test Plan:
- Interacted with auditors via "Edit Commit" and API.
- Comment area is still oldschool and doesn't work yet.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978, T7676
Differential Revision: https://secure.phabricator.com/D17181
Summary: Ref T10978. This currently does almost nothing, but gets it in place so I can add stuff to it.
Test Plan: Made a comment on a commit using the API.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17178
Summary: Ref T10978. The new controller now does everything the old one did, so swap 'em and nuke the old one.
Test Plan: Edited a commit, hit the new controller, things worked real good.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17177
Summary: Ref T10978. The current "Edit" flow has some autoclose info. This isn't necessarily the best place to put it in the long run, but preseve it for now since the documentation refers to it.
Test Plan: {F2340658}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17176
Summary:
Fixes T12097. In D16413, I simplified this code but caused us to load the //commit's// projects instead of the //repository's// projects, which is incorrect.
Normally, commits don't have any project tags when Herald evaluates, so using the commit's projects is generally meaningless.
Test Plan:
- Tagged a repository with `#X`.
- Created a Herald object rule for commits with `#X` as the object ("Always ... do nothing.")
- Ran a commit from the repository.
- Before patch: rule failed to evaluate.
- After patch: rule evaluated and passed.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12097
Differential Revision: https://secure.phabricator.com/D17179
Summary:
Ref T10978. After T11114, we have some features (like the old code for the haunted comment panel) which are only used by Diffusion. I want to modernize it so I can nuke them. T10978 also describes many bugs which are only fixable after modernizing.
This adds very basic EditEngine support for commits/audit. You can't create new commits with this workflow, just tag/update existing ones.
Test Plan: {F2340347}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10978
Differential Revision: https://secure.phabricator.com/D17175
Summary:
Fixes T12087. When transitioning into a clustered configuration for the first time, the documentation recommends using a one-device cluster as a transitional step.
However, installs may not do this for whatever reason, and we aren't as clear as we could be in warning about clusterizing directly into a multi-device cluster.
Roughly, when you do this, we end up believing that working copies exist on several different devices, but have no information about which copy or copies are up to date. //Usually// they all were already synchronized and are all up to date, but we can't make this assumption safely without risking data.
Instead, we err on the side of caution, and require a human to tell us which copy we should consider to be up-to-date, using `bin/repository thaw --promote`.
Test Plan:
```
$ ./bin/repository clusterize rLOCKS --service repos001.phacility.net
Service "repos001.phacility.net" is actively bound to more than one device
(local002.local, local001.phacility.net).
If you clusterize a repository onto this service it will be unclear which
devices have up-to-date copies of the repository. This leader/follower
ambiguity will freeze the repository. You may need to manually promote a
device to unfreeze it. See "Ambiguous Leaders" in the documentation for
discussion.
Continue anyway? [y/N]
```
Read other changes.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12087
Differential Revision: https://secure.phabricator.com/D17169
Summary: Fixes T12080. This was missing a "/", but stop hard-coding these URIs.
Test Plan: Clicked both links with Quickling as a logged-in and logged-out user, ended up in the right place.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12080
Differential Revision: https://secure.phabricator.com/D17151
Summary:
Fixes T12035. Normally, the "abc" -> "abc/" redirect is handled automatically when "abc" hits a 404.
However, in this case, "source/x" does not 404. We route this to a valid controller because some VCS requests omit the slashes, then manually perform the redirect if we aren't serving a VCS request.
Allow this controller to serve public resources so we can serve the redirect to logged-out users instead of prompting them to login so they can be redirected.
Test Plan: Visited `/source/x` as a logged-out user, where `x` is a public repository.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12035
Differential Revision: https://secure.phabricator.com/D17097
Summary:
Ref T11954. In cluster configurations, we get repository information by making HTTP calls over Conduit.
These are slower than local calls, so clustering imposes a performance penalty. However, we can use futures and parallelize them so that clustering actually improves overall performance.
When not running in clustered mode, this just makes us run stuff inline.
Test Plan:
- Browsed Git, Mercurial and Subversion repositories.
- Locally, saw a 700ms wall time page drop to 200ms.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11954
Differential Revision: https://secure.phabricator.com/D17009
Summary:
Ref T11954. Especially with higher-latency file stores like S3, we can spend a lot of time reading README data and then pulling it out of file storage.
Instead, cache it.
Test Plan: Browsed a repostory with a README, saw faster pages.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11954
Differential Revision: https://secure.phabricator.com/D17002
Summary:
Ref T11954. This is kind of complex and I'm not sure I want to actually land it, but it gives us a fairly good improvement for clustered repositories so I'm leaning toward moving forward.
When we make (or receive) clustered repository requests, we must first load a bunch of stuff out of Almanac to figure out where to send the request (or if we can handle the request ourselves).
This involves several round trip queries into Almanac (service, device, interfaces, bindings, properties) and generally is fairly slow/expensive. The actual data we get out of it is just a list of URIs.
Caching this would be very easy, except that invalidating the cache is difficult, since editing any binding, property, interface, or device may invalidate the cache for indirectly connected services and repositories.
To address this, introduce `PhabricatorCacheEngine`, which is an extensible engine like `PhabricatorDestructionEngine` for propagating cache updates. It has two modes:
- Discover linked objects (that is: find related objects which may need to have caches invalidated).
- Invalidate caches (that is: nuke any caches which need to be nuked).
Both modes are extensible, so third-party code can build repository-dependent caches or whatever. This may be overkill but even if Almanac is the only thing we use it for it feels like a fairly clean solution to the problem.
With `CacheEngine`, make any edit to Almanac stuff propagate up to the Service, and then from the Service to any linked Repositories.
Once we hit repositories, invalidate their caches when Almanac changes.
Test Plan:
- Observed a 20-30ms performance improvement with `ab -n 100`.
- (The main page making Conduit calls also gets a performance improvement, although that's a little trickier to measure directly.)
- Added debugging code to the cache engine stuff to observe the linking and invalidation phases.
- Made invalidation throw; verified that editing properties, bindings, etc, properly invalidates the cache of any indirectly linked repositories.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11954
Differential Revision: https://secure.phabricator.com/D17000
Summary: Ref T929. When viewing a branch, show a few recent differences from the default branch (usually, "master").
Test Plan: {F2079220}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T929
Differential Revision: https://secure.phabricator.com/D16991
Summary: Ref T929. We've made some UI updates since D15330.
Test Plan: {F2079125}
Reviewers: avivey, chad
Reviewed By: chad
Maniphest Tasks: T929
Differential Revision: https://secure.phabricator.com/D16990
Summary:
This shows the commits list only (Actual `git diff` will show up at a later date).
The inputs are left as text-fields, to allow the form to accept anything that can be resolved. The form is GET, to allow sharing URIs.
The conduit method response array is compatible with that of `diffusion.historyquery`, to make it easy to build
the "history" table.
The hardest part here was, of course, Naming. I think "from" and "onto" are unconfusing, and I'm fairly confident that the "to merge"
instructions are in sync with the actual content of the page.
Test Plan: Look at several "compare" views, with various values of "from" and "onto".
Reviewers: #blessed_reviewers!, epriestley
Subscribers: caov297, 20after4, Sam2304, reardencode, baileyb, chad, Korvin
Maniphest Tasks: T929
Differential Revision: https://secure.phabricator.com/D15330
Summary:
Fixes T11940. In 2.11.0, Git has made a change so that newly-pushed changes are held in a temporary area until the hook accepts or rejects them.
This magic temporary area is only readable if the appropriate `GIT_ENVIRONMENTAL_MAGIC` variables are available. When executing `git` commands, pass them through from the calling context.
We're intentionally conservative about which variables we pass, and with good reason (see "httpoxy" in T11359). I think this continues to be the correct default behavior.
Test Plan:
- Upgraded to Git 2.11.0.
- Tried to push over SSH, got a hook error.
- Applied patch.
- Pulled and pushed over SSH.
- Pulled and pushed over HTTP.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11940
Differential Revision: https://secure.phabricator.com/D16988
Summary:
Fixes T11938.
Note that there's a subcase here: if you `hg clone` or `svn checkout` a short `/source/` URI that ends in `.git`, we miss the lookup and don't get this far, so you still get a generic error message.
Hopefully it is clear enough on its own that `proto://.../blah.git` is, in fact, a Git repository, since it says ".git" at the end.
If that doesn't prove to be true, we can be more surgical about this.
Test Plan:
```
$ git clone ssh://local@localvault.phacility.com/source/quack.notgit/
Cloning into 'quack.notgit'...
phabricator-ssh-exec: This repository ("quack.notgit") is not a Git repository. Use "hg" to interact with this repository.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
```
```
$ hg clone ssh://local@localvault.phacility.com/source/phabx
remote: phabricator-ssh-exec: This repository ("phabx") is not a Mercurial repository. Use "git" to interact with this repository.
abort: no suitable response from remote hg!
```
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11938
Differential Revision: https://secure.phabricator.com/D16976
Summary:
Fixes T11936. After editing a repository URI, we were not correctly updating the URI index.
Any other edit to the repository //would// update the index, and this index is only really used by `arc` to figure out which repository a working copy belongs to, so that's how this evaded detection for this long. In particular, creating a repository would usually have an edit after any URI edits, to activate it, which would build the index correctly.
Test Plan:
- Added a new URI to a repository.
- Verified it was immediately reflected in the `repository_uriindex` table.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11936
Differential Revision: https://secure.phabricator.com/D16972
Summary:
Ref T11044. Few issues here:
- The `PhutilProxyException` is missing an argument (hit this while in read-only mode).
- The `$ref_key` is unused.
- When you add a new master to an existing cluster, we can incorrectly apply `.php` patches which we should not reapply. Instead, mark them as already-applied.
Test Plan:
- Poked this locally, but will initialize `secure004` as an empty master to be sure.
Reviewers: chad, avivey
Reviewed By: avivey
Maniphest Tasks: T11044
Differential Revision: https://secure.phabricator.com/D16916
Summary:
Fixes T11902.
- Periods now work in short names.
- If you try to name something ".git", no dice.
Test Plan:
- Tried to name something "quack.git", was politely rejected.
- Named something "quack.notgit", and it worked fine.
- Cloned Mercurial and Git repositories over SSH with ".git" and non-".git" variants without hitting any issues.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11902
Differential Revision: https://secure.phabricator.com/D16908
Summary: See D16851 - there's now a difference in their meaning, so don't unite them in the UI.
Test Plan: Load manage page of repos
Reviewers: epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D16858
Summary: Fixes T4245. When a repository has a short name, use `/source/shortname/` as its primary URI.
Test Plan:
- Cloned Git repositories from shortnames via HTTP and SSH.
- Cloned Mercurial repositories from shortnames via HTTP and SSH.
- Cloned Subversion repositories from shortnames via SSH.
- Browsed Git, Mercurial and Subversion repositories.
- Added and removed short names to various repositories.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T4245
Differential Revision: https://secure.phabricator.com/D16851
Summary: Fixes T11839. Both are missing a parameter and one is a copy/paste slop.
Test Plan:
{F1913812}
{F1913813}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11839
Differential Revision: https://secure.phabricator.com/D16837
Summary:
fixes T11792.
There's no good reason any more to have this option, so just drop it.
Test Plan: Load a file, toggle remaining "blame" button. Load search results page and an image too, which are serviced by the same controller.
Reviewers: chad, #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: Korvin
Maniphest Tasks: T11792
Differential Revision: https://secure.phabricator.com/D16833
Summary: Ref T11766. When users run `git pull` or similar, log the operation in the pull log.
Test Plan: Performed SSH pulls, got a log in the database. Today, this event log is purely diagnostic and has no UI.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11766
Differential Revision: https://secure.phabricator.com/D16738