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PhabricatorDaemonLogQuery.php
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Mon, Dec 23, 10:57

PhabricatorDaemonLogQuery.php
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<?php
final class PhabricatorDaemonLogQuery
extends PhabricatorCursorPagedPolicyAwareQuery {
const STATUS_ALL = 'status-all';
const STATUS_ALIVE = 'status-alive';
private $ids;
private $notIDs;
private $status = self::STATUS_ALL;
private $daemonClasses;
private $allowStatusWrites;
public static function getTimeUntilUnknown() {
return 3 * PhutilDaemonHandle::getHeartbeatEventFrequency();
}
public static function getTimeUntilDead() {
return 30 * PhutilDaemonHandle::getHeartbeatEventFrequency();
}
public function withIDs(array $ids) {
$this->ids = $ids;
return $this;
}
public function withoutIDs(array $ids) {
$this->notIDs = $ids;
return $this;
}
public function withStatus($status) {
$this->status = $status;
return $this;
}
public function withDaemonClasses(array $classes) {
$this->daemonClasses = $classes;
return $this;
}
public function setAllowStatusWrites($allow) {
$this->allowStatusWrites = $allow;
return $this;
}
protected function loadPage() {
$table = new PhabricatorDaemonLog();
$conn_r = $table->establishConnection('r');
$data = queryfx_all(
$conn_r,
'SELECT * FROM %T %Q %Q %Q',
$table->getTableName(),
$this->buildWhereClause($conn_r),
$this->buildOrderClause($conn_r),
$this->buildLimitClause($conn_r));
return $table->loadAllFromArray($data);
}
protected function willFilterPage(array $daemons) {
$unknown_delay = PhabricatorDaemonLogQuery::getTimeUntilUnknown();
$dead_delay = PhabricatorDaemonLogQuery::getTimeUntilDead();
$status_running = PhabricatorDaemonLog::STATUS_RUNNING;
$status_unknown = PhabricatorDaemonLog::STATUS_UNKNOWN;
$status_wait = PhabricatorDaemonLog::STATUS_WAIT;
$status_exiting = PhabricatorDaemonLog::STATUS_EXITING;
$status_exited = PhabricatorDaemonLog::STATUS_EXITED;
$status_dead = PhabricatorDaemonLog::STATUS_DEAD;
$filter = array_fuse($this->getStatusConstants());
foreach ($daemons as $key => $daemon) {
$status = $daemon->getStatus();
$seen = $daemon->getDateModified();
$is_running = ($status == $status_running) ||
($status == $status_wait) ||
($status == $status_exiting);
// If we haven't seen the daemon recently, downgrade its status to
// unknown.
$unknown_time = ($seen + $unknown_delay);
if ($is_running && ($unknown_time < time())) {
$status = $status_unknown;
}
// If the daemon hasn't been seen in quite a while, assume it is dead.
$dead_time = ($seen + $dead_delay);
if (($status == $status_unknown) && ($dead_time < time())) {
$status = $status_dead;
}
// If we changed the daemon's status, adjust it.
if ($status != $daemon->getStatus()) {
$daemon->setStatus($status);
// ...and write it, if we're in a context where that's reasonable.
if ($this->allowStatusWrites) {
$guard = AphrontWriteGuard::beginScopedUnguardedWrites();
$daemon->save();
unset($guard);
}
}
// If the daemon no longer matches the filter, get rid of it.
if ($filter) {
if (empty($filter[$daemon->getStatus()])) {
unset($daemons[$key]);
}
}
}
return $daemons;
}
private function buildWhereClause(AphrontDatabaseConnection $conn_r) {
$where = array();
if ($this->ids) {
$where[] = qsprintf(
$conn_r,
'id IN (%Ld)',
$this->ids);
}
if ($this->notIDs) {
$where[] = qsprintf(
$conn_r,
'id NOT IN (%Ld)',
$this->notIDs);
}
if ($this->getStatusConstants()) {
$where[] = qsprintf(
$conn_r,
'status IN (%Ls)',
$this->getStatusConstants());
}
if ($this->daemonClasses) {
$where[] = qsprintf(
$conn_r,
'daemon IN (%Ls)',
$this->daemonClasses);
}
$where[] = $this->buildPagingClause($conn_r);
return $this->formatWhereClause($where);
}
private function getStatusConstants() {
$status = $this->status;
switch ($status) {
case self::STATUS_ALL:
return array();
case self::STATUS_ALIVE:
return array(
PhabricatorDaemonLog::STATUS_UNKNOWN,
PhabricatorDaemonLog::STATUS_RUNNING,
PhabricatorDaemonLog::STATUS_WAIT,
PhabricatorDaemonLog::STATUS_EXITING,
);
default:
throw new Exception("Unknown status '{$status}'!");
}
}
public function getQueryApplicationClass() {
return 'PhabricatorDaemonsApplication';
}
}

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