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Handle tag tags properly in discovery

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Summary:
Fixes T11180. In Git, it's possible to tag a tag (????). When you do, we try to log the tag-object, which automatically resolves to the commit and fails.

Just skip these. If "A" points at "B" which points at "C", it's fine to ignore "A" and "B" since we'll get the same stuff when we process "C".

Test Plan:
  - Tagged a tag.
  - Pushed it.
  - Discovered it.
  - Before patch: got exception similar to the one in T11180.
  - After patch: got tag-tag skipped. Also got slightly better error messages.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11180

Differential Revision: https://secure.phabricator.com/D16149
This commit is contained in:
epriestley 2016-06-20 11:07:00 -07:00
parent f763c314e1
commit 9a2c2505a0
2 changed files with 29 additions and 5 deletions
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18
src/applications/repository/daemon/PhabricatorGitGraphStream.php
View file

@ -5,6 +5,7 @@ final class PhabricatorGitGraphStream
private $repository;
private $iterator;
private $startCommit;
private $parents = array();
private $dates = array();
@ -14,6 +15,7 @@ final class PhabricatorGitGraphStream
$start_commit = null) {
$this->repository = $repository;
$this->startCommit = $start_commit;
if ($start_commit !== null) {
$future = $repository->getLocalCommandFuture(
@ -82,10 +84,18 @@ final class PhabricatorGitGraphStream
}
}
throw new Exception(
pht(
"No such commit '%s' in repository!",
$commit));
if ($this->startCommit !== null) {
throw new Exception(
pht(
'Commit "%s" is not a reachable ancestor of "%s".',
$commit,
$this->startCommit));
} else {
throw new Exception(
pht(
'Commit "%s" is not a reachable ancestor of any ref.',
$commit));
}
}
private function isParsed($commit) {

16
src/applications/repository/engine/PhabricatorRepositoryDiscoveryEngine.php
View file

@ -157,7 +157,12 @@ final class PhabricatorRepositoryDiscoveryEngine
$name = $ref->getShortName();
$commit = $ref->getCommitIdentifier();
$this->log(pht('Examining ref "%s", at "%s".', $name, $commit));
$this->log(
pht(
'Examining "%s" (%s) at "%s".',
$name,
$ref->getRefType(),
$commit));
if (!$repository->shouldTrackRef($ref)) {
$this->log(pht('Skipping, ref is untracked.'));
@ -169,6 +174,15 @@ final class PhabricatorRepositoryDiscoveryEngine
continue;
}
// In Git, it's possible to tag a tag. We just skip these, we'll discover
// them when we process the target tag. See T11180.
$fields = $ref->getRawFields();
$tag_type = idx($fields, '*objecttype');
if ($tag_type == 'tag') {
$this->log(pht('Skipping, this is a tag of a tag.'));
continue;
}
$this->log(pht('Looking for new commits.'));
$head_refs = $this->discoverStreamAncestry(