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PhabricatorWorkerTriggerQuery.php
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Mon, May 6, 02:35

PhabricatorWorkerTriggerQuery.php
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<?php
final class PhabricatorWorkerTriggerQuery
extends PhabricatorPolicyAwareQuery {
// NOTE: This is a PolicyAware query so it can work with other infrastructure
// like handles; triggers themselves are low-level and do not have
// meaningful policies.
const ORDER_ID = 'id';
const ORDER_EXECUTION = 'execution';
const ORDER_VERSION = 'version';
private $ids;
private $phids;
private $versionMin;
private $versionMax;
private $nextEpochMin;
private $nextEpochMax;
private $needEvents;
private $order = self::ORDER_ID;
public function getQueryApplicationClass() {
return null;
}
public function withIDs(array $ids) {
$this->ids = $ids;
return $this;
}
public function withPHIDs(array $phids) {
$this->phids = $phids;
return $this;
}
public function withVersionBetween($min, $max) {
$this->versionMin = $min;
$this->versionMax = $max;
return $this;
}
public function withNextEventBetween($min, $max) {
$this->nextEpochMin = $min;
$this->nextEpochMax = $max;
return $this;
}
public function needEvents($need_events) {
$this->needEvents = $need_events;
return $this;
}
/**
* Set the result order.
*
* Note that using `ORDER_EXECUTION` will also filter results to include only
* triggers which have been scheduled to execute. You should not use this
* ordering when querying for specific triggers, e.g. by ID or PHID.
*
* @param const Result order.
* @return this
*/
public function setOrder($order) {
$this->order = $order;
return $this;
}
protected function nextPage(array $page) {
// NOTE: We don't implement paging because we don't currently ever need
// it and paging ORDER_EXECUTION is a hassle.
// (Before T13266, we raised an exception here, but since "nextPage()" is
// now called even if we don't page we can't do that anymore. Just do
// nothing instead.)
return null;
}
protected function loadPage() {
$task_table = new PhabricatorWorkerTrigger();
$conn_r = $task_table->establishConnection('r');
$rows = queryfx_all(
$conn_r,
'SELECT t.* FROM %T t %Q %Q %Q %Q',
$task_table->getTableName(),
$this->buildJoinClause($conn_r),
$this->buildWhereClause($conn_r),
$this->buildOrderClause($conn_r),
$this->buildLimitClause($conn_r));
$triggers = $task_table->loadAllFromArray($rows);
if ($triggers) {
if ($this->needEvents) {
$ids = mpull($triggers, 'getID');
$events = id(new PhabricatorWorkerTriggerEvent())->loadAllWhere(
'triggerID IN (%Ld)',
$ids);
$events = mpull($events, null, 'getTriggerID');
foreach ($triggers as $key => $trigger) {
$event = idx($events, $trigger->getID());
$trigger->attachEvent($event);
}
}
foreach ($triggers as $key => $trigger) {
$clock_class = $trigger->getClockClass();
if (!is_subclass_of($clock_class, 'PhabricatorTriggerClock')) {
unset($triggers[$key]);
continue;
}
try {
$argv = array($trigger->getClockProperties());
$clock = newv($clock_class, $argv);
} catch (Exception $ex) {
unset($triggers[$key]);
continue;
}
$trigger->attachClock($clock);
}
foreach ($triggers as $key => $trigger) {
$action_class = $trigger->getActionClass();
if (!is_subclass_of($action_class, 'PhabricatorTriggerAction')) {
unset($triggers[$key]);
continue;
}
try {
$argv = array($trigger->getActionProperties());
$action = newv($action_class, $argv);
} catch (Exception $ex) {
unset($triggers[$key]);
continue;
}
$trigger->attachAction($action);
}
}
return $triggers;
}
protected function buildJoinClause(AphrontDatabaseConnection $conn) {
$joins = array();
if (($this->nextEpochMin !== null) ||
($this->nextEpochMax !== null) ||
($this->order == self::ORDER_EXECUTION)) {
$joins[] = qsprintf(
$conn,
'JOIN %T e ON e.triggerID = t.id',
id(new PhabricatorWorkerTriggerEvent())->getTableName());
}
if ($joins) {
return qsprintf($conn, '%LJ', $joins);
} else {
return qsprintf($conn, '');
}
}
protected function buildWhereClause(AphrontDatabaseConnection $conn) {
$where = array();
if ($this->ids !== null) {
$where[] = qsprintf(
$conn,
't.id IN (%Ld)',
$this->ids);
}
if ($this->phids !== null) {
$where[] = qsprintf(
$conn,
't.phid IN (%Ls)',
$this->phids);
}
if ($this->versionMin !== null) {
$where[] = qsprintf(
$conn,
't.triggerVersion >= %d',
$this->versionMin);
}
if ($this->versionMax !== null) {
$where[] = qsprintf(
$conn,
't.triggerVersion <= %d',
$this->versionMax);
}
if ($this->nextEpochMin !== null) {
$where[] = qsprintf(
$conn,
'e.nextEventEpoch >= %d',
$this->nextEpochMin);
}
if ($this->nextEpochMax !== null) {
$where[] = qsprintf(
$conn,
'e.nextEventEpoch <= %d',
$this->nextEpochMax);
}
return $this->formatWhereClause($conn, $where);
}
private function buildOrderClause(AphrontDatabaseConnection $conn_r) {
switch ($this->order) {
case self::ORDER_ID:
return qsprintf(
$conn_r,
'ORDER BY id DESC');
case self::ORDER_EXECUTION:
return qsprintf(
$conn_r,
'ORDER BY e.nextEventEpoch ASC, e.id ASC');
case self::ORDER_VERSION:
return qsprintf(
$conn_r,
'ORDER BY t.triggerVersion ASC');
default:
throw new Exception(
pht(
'Unsupported order "%s".',
$this->order));
}
}
}

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