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PhabricatorFactDaemon.php
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Mon, Mar 10, 06:48

PhabricatorFactDaemon.php
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<?php
final class PhabricatorFactDaemon extends PhabricatorDaemon {
private $engines;
const RAW_FACT_BUFFER_LIMIT = 128;
public function run() {
$this->setEngines(PhabricatorFactEngine::loadAllEngines());
while (!$this->shouldExit()) {
$iterators = $this->getAllApplicationIterators();
foreach ($iterators as $iterator_name => $iterator) {
$this->processIteratorWithCursor($iterator_name, $iterator);
}
$this->processAggregates();
$this->log('Zzz...');
$this->sleep(60 * 5);
}
}
public static function getAllApplicationIterators() {
$apps = PhabricatorApplication::getAllInstalledApplications();
$iterators = array();
foreach ($apps as $app) {
foreach ($app->getFactObjectsForAnalysis() as $object) {
$iterator = new PhabricatorFactUpdateIterator($object);
$iterators[get_class($object)] = $iterator;
}
}
return $iterators;
}
public function processIteratorWithCursor($iterator_name, $iterator) {
$this->log("Processing cursor '{$iterator_name}'.");
$cursor = id(new PhabricatorFactCursor())->loadOneWhere(
'name = %s',
$iterator_name);
if (!$cursor) {
$cursor = new PhabricatorFactCursor();
$cursor->setName($iterator_name);
$position = null;
} else {
$position = $cursor->getPosition();
}
if ($position) {
$iterator->setPosition($position);
}
$new_cursor_position = $this->processIterator($iterator);
if ($new_cursor_position) {
$cursor->setPosition($new_cursor_position);
$cursor->save();
}
}
public function setEngines(array $engines) {
assert_instances_of($engines, 'PhabricatorFactEngine');
$this->engines = $engines;
return $this;
}
public function processIterator($iterator) {
$result = null;
$raw_facts = array();
foreach ($iterator as $key => $object) {
$phid = $object->getPHID();
$this->log("Processing {$phid}...");
$raw_facts[$phid] = $this->computeRawFacts($object);
if (count($raw_facts) > self::RAW_FACT_BUFFER_LIMIT) {
$this->updateRawFacts($raw_facts);
$raw_facts = array();
}
$result = $key;
}
if ($raw_facts) {
$this->updateRawFacts($raw_facts);
$raw_facts = array();
}
return $result;
}
public function processAggregates() {
$this->log('Processing aggregates.');
$facts = $this->computeAggregateFacts();
$this->updateAggregateFacts($facts);
}
private function computeAggregateFacts() {
$facts = array();
foreach ($this->engines as $engine) {
if (!$engine->shouldComputeAggregateFacts()) {
continue;
}
$facts[] = $engine->computeAggregateFacts();
}
return array_mergev($facts);
}
private function computeRawFacts(PhabricatorLiskDAO $object) {
$facts = array();
foreach ($this->engines as $engine) {
if (!$engine->shouldComputeRawFactsForObject($object)) {
continue;
}
$facts[] = $engine->computeRawFactsForObject($object);
}
return array_mergev($facts);
}
private function updateRawFacts(array $map) {
foreach ($map as $phid => $facts) {
assert_instances_of($facts, 'PhabricatorFactRaw');
}
$phids = array_keys($map);
if (!$phids) {
return;
}
$table = new PhabricatorFactRaw();
$conn = $table->establishConnection('w');
$table_name = $table->getTableName();
$sql = array();
foreach ($map as $phid => $facts) {
foreach ($facts as $fact) {
$sql[] = qsprintf(
$conn,
'(%s, %s, %s, %d, %d, %d)',
$fact->getFactType(),
$fact->getObjectPHID(),
$fact->getObjectA(),
$fact->getValueX(),
$fact->getValueY(),
$fact->getEpoch());
}
}
$table->openTransaction();
queryfx(
$conn,
'DELETE FROM %T WHERE objectPHID IN (%Ls)',
$table_name,
$phids);
if ($sql) {
foreach (array_chunk($sql, 256) as $chunk) {
queryfx(
$conn,
'INSERT INTO %T
(factType, objectPHID, objectA, valueX, valueY, epoch)
VALUES %Q',
$table_name,
implode(', ', $chunk));
}
}
$table->saveTransaction();
}
private function updateAggregateFacts(array $facts) {
if (!$facts) {
return;
}
$table = new PhabricatorFactAggregate();
$conn = $table->establishConnection('w');
$table_name = $table->getTableName();
$sql = array();
foreach ($facts as $fact) {
$sql[] = qsprintf(
$conn,
'(%s, %s, %d)',
$fact->getFactType(),
$fact->getObjectPHID(),
$fact->getValueX());
}
foreach (array_chunk($sql, 256) as $chunk) {
queryfx(
$conn,
'INSERT INTO %T (factType, objectPHID, valueX) VALUES %Q
ON DUPLICATE KEY UPDATE valueX = VALUES(valueX)',
$table_name,
implode(', ', $chunk));
}
}
}

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