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PhabricatorRepositoryCommitDiscoveryDaemon.php
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Wed, Jul 17, 12:40

PhabricatorRepositoryCommitDiscoveryDaemon.php
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<?php
/*
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
abstract class PhabricatorRepositoryCommitDiscoveryDaemon
extends PhabricatorRepositoryDaemon {
private $repository;
private $commitCache = array();
final protected function getRepository() {
return $this->repository;
}
final public function run() {
$this->repository = $this->loadRepository();
$sleep = $this->repository->getDetail('pull-frequency');
while (true) {
$this->discoverCommits();
$this->sleep(max(2, $sleep));
}
}
final public function runOnce() {
$this->repository = $this->loadRepository();
$this->discoverCommits();
}
protected function isKnownCommit($target) {
if (isset($this->commitCache[$target])) {
return true;
}
$commit = id(new PhabricatorRepositoryCommit())->loadOneWhere(
'repositoryID = %s AND commitIdentifier = %s',
$this->getRepository()->getID(),
$target);
if (!$commit) {
return false;
}
$this->commitCache[$target] = true;
while (count($this->commitCache) > 64) {
array_shift($this->commitCache);
}
return true;
}
protected function recordCommit($commit_identifier, $epoch) {
$repository = $this->getRepository();
$commit = new PhabricatorRepositoryCommit();
$commit->setRepositoryID($repository->getID());
$commit->setCommitIdentifier($commit_identifier);
$commit->setEpoch($epoch);
try {
$commit->save();
$event = new PhabricatorTimelineEvent(
'cmit',
array(
'id' => $commit->getID(),
));
$event->recordEvent();
queryfx(
$repository->establishConnection('w'),
'INSERT INTO %T (repositoryID, size, lastCommitID, epoch)
VALUES (%d, 1, %d, %d)
ON DUPLICATE KEY UPDATE
size = size + 1,
lastCommitID =
IF(VALUES(epoch) > epoch, VALUES(lastCommitID), lastCommitID),
epoch = IF(VALUES(epoch) > epoch, VALUES(epoch), epoch)',
PhabricatorRepository::TABLE_SUMMARY,
$repository->getID(),
$commit->getID(),
$epoch);
$this->commitCache[$commit_identifier] = true;
} catch (AphrontQueryDuplicateKeyException $ex) {
// Ignore. This can happen because we discover the same new commit
// more than once when looking at history, or because of races or
// data inconsistency or cosmic radiation; in any case, we're still
// in a good state if we ignore the failure.
$this->commitCache[$commit_identifier] = true;
}
$this->stillWorking();
}
abstract protected function discoverCommits();
}

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