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phab/src/applications/diffusion/conduit/ConduitAPI_diffusion_getcommits_Method.php
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ConduitAPI_diffusion_getcommits_Method.php
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<?php
/**
* @group conduit
*/
final class ConduitAPI_diffusion_getcommits_Method
extends ConduitAPI_diffusion_Method {
public function getMethodDescription() {
return "Retrieve Diffusion commit information.";
}
public function defineParamTypes() {
return array(
'commits' => 'required list<string>',
);
}
public function defineReturnType() {
return 'nonempty list<dict<string, wild>>';
}
public function defineErrorTypes() {
return array(
);
}
protected function execute(ConduitAPIRequest $request) {
$results = array();
$commits = $request->getValue('commits');
$commits = array_fill_keys($commits, array());
foreach ($commits as $name => $info) {
$matches = null;
if (!preg_match('/^r([A-Z]+)([0-9a-f]+)$/', $name, $matches)) {
$results[$name] = array(
'error' => 'ERR-UNPARSEABLE',
);
unset($commits[$name]);
continue;
}
$commits[$name] = array(
'callsign' => $matches[1],
'commitIdentifier' => $matches[2],
);
}
if (!$commits) {
return $results;
}
$callsigns = ipull($commits, 'callsign');
$callsigns = array_unique($callsigns);
$repos = id(new PhabricatorRepositoryQuery())
->setViewer($request->getUser())
->withCallsigns($callsigns)
->execute();
$repos = mpull($repos, null, 'getCallsign');
foreach ($commits as $name => $info) {
$repo = idx($repos, $info['callsign']);
if (!$repo) {
$results[$name] = $info + array(
'error' => 'ERR-UNKNOWN-REPOSITORY',
);
unset($commits[$name]);
continue;
}
$commits[$name] += array(
'repositoryPHID' => $repo->getPHID(),
'repositoryID' => $repo->getID(),
);
}
if (!$commits) {
return $results;
}
// Execute a complicated query to figure out the primary commit information
// for each referenced commit.
$cdata = $this->queryCommitInformation($commits, $repos);
// We've built the queries so that each row also has the identifier we used
// to select it, which might be a git prefix rather than a full identifier.
$ref_map = ipull($cdata, 'commitIdentifier', 'commitRef');
$cobjs = id(new PhabricatorRepositoryCommit())->loadAllFromArray($cdata);
$cobjs = mgroup($cobjs, 'getRepositoryID', 'getCommitIdentifier');
foreach ($commits as $name => $commit) {
// Expand short git names into full identifiers. For SVN this map is just
// the identity.
$full_identifier = idx($ref_map, $commit['commitIdentifier']);
$repo_id = $commit['repositoryID'];
unset($commits[$name]['repositoryID']);
if (empty($full_identifier) ||
empty($cobjs[$commit['repositoryID']][$full_identifier])) {
$results[$name] = $commit + array(
'error' => 'ERR-UNKNOWN-COMMIT',
);
unset($commits[$name]);
continue;
}
$cobj_arr = $cobjs[$commit['repositoryID']][$full_identifier];
$cobj = head($cobj_arr);
$commits[$name] += array(
'epoch' => $cobj->getEpoch(),
'commitPHID' => $cobj->getPHID(),
'commitID' => $cobj->getID(),
);
// Upgrade git short references into full commit identifiers.
$identifier = $cobj->getCommitIdentifier();
$commits[$name]['commitIdentifier'] = $identifier;
$callsign = $commits[$name]['callsign'];
$uri = "/r{$callsign}{$identifier}";
$commits[$name]['uri'] = PhabricatorEnv::getProductionURI($uri);
}
if (!$commits) {
return $results;
}
$commits = $this->addRepositoryCommitDataInformation($commits);
$commits = $this->addDifferentialInformation($commits);
foreach ($commits as $name => $commit) {
$results[$name] = $commit;
}
return $results;
}
/**
* Retrieve primary commit information for all referenced commits.
*/
private function queryCommitInformation(array $commits, array $repos) {
assert_instances_of($repos, 'PhabricatorRepository');
$conn_r = id(new PhabricatorRepositoryCommit())->establishConnection('r');
$repos = mpull($repos, null, 'getID');
$groups = array();
foreach ($commits as $name => $commit) {
$groups[$commit['repositoryID']][] = $commit['commitIdentifier'];
}
// NOTE: MySQL goes crazy and does a massive table scan if we build a more
// sensible version of this query. Make sure the query plan is OK if you
// attempt to reduce the craziness here. METANOTE: The addition of prefix
// selection for Git further complicates matters.
$query = array();
$commit_table = id(new PhabricatorRepositoryCommit())->getTableName();
foreach ($groups as $repository_id => $identifiers) {
$vcs = $repos[$repository_id]->getVersionControlSystem();
$is_git = ($vcs == PhabricatorRepositoryType::REPOSITORY_TYPE_GIT);
if ($is_git) {
foreach ($identifiers as $identifier) {
if (strlen($identifier) < 7) {
// Don't bother with silly stuff like 'rX2', which will select
// 1/16th of all commits. Note that with length 7 we'll still get
// collisions in repositories at the tens-of-thousands-of-commits
// scale.
continue;
}
$query[] = qsprintf(
$conn_r,
'SELECT %T.*, %s commitRef
FROM %T WHERE repositoryID = %d
AND commitIdentifier LIKE %>',
$commit_table,
$identifier,
$commit_table,
$repository_id,
$identifier);
}
} else {
$query[] = qsprintf(
$conn_r,
'SELECT %T.*, commitIdentifier commitRef
FROM %T WHERE repositoryID = %d
AND commitIdentifier IN (%Ls)',
$commit_table,
$commit_table,
$repository_id,
$identifiers);
}
}
return queryfx_all(
$conn_r,
'%Q',
implode(' UNION ALL ', $query));
}
/**
* Enhance the commit list with RepositoryCommitData information.
*/
private function addRepositoryCommitDataInformation(array $commits) {
$commit_ids = ipull($commits, 'commitID');
$data = id(new PhabricatorRepositoryCommitData())->loadAllWhere(
'commitID in (%Ld)',
$commit_ids);
$data = mpull($data, null, 'getCommitID');
foreach ($commits as $name => $commit) {
if (isset($data[$commit['commitID']])) {
$dobj = $data[$commit['commitID']];
$commits[$name] += array(
'commitMessage' => $dobj->getCommitMessage(),
'commitDetails' => $dobj->getCommitDetails(),
);
}
// Remove this information so we don't expose it via the API since
// external services shouldn't be storing internal Commit IDs.
unset($commits[$name]['commitID']);
}
return $commits;
}
/**
* Enhance the commit list with Differential information.
*/
private function addDifferentialInformation(array $commits) {
$commit_phids = ipull($commits, 'commitPHID');
// TODO: (T603) This should be policy checked, either by moving to
// DifferentialRevisionQuery or by doing a followup query to make sure
// the matched objects are visible.
$rev_conn_r = id(new DifferentialRevision())->establishConnection('r');
$revs = queryfx_all(
$rev_conn_r,
'SELECT r.id id, r.phid phid, c.commitPHID commitPHID FROM %T r JOIN %T c
ON r.id = c.revisionID
WHERE c.commitPHID in (%Ls)',
id(new DifferentialRevision())->getTableName(),
DifferentialRevision::TABLE_COMMIT,
$commit_phids);
$revs = ipull($revs, null, 'commitPHID');
foreach ($commits as $name => $commit) {
if (isset($revs[$commit['commitPHID']])) {
$rev = $revs[$commit['commitPHID']];
$commits[$name] += array(
'differentialRevisionID' => 'D'.$rev['id'],
'differentialRevisionPHID' => $rev['phid'],
);
}
}
return $commits;
}
}
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