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DrydockResource.php
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Mon, Jul 15, 17:12

DrydockResource.php
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<?php
final class DrydockResource extends DrydockDAO
implements PhabricatorPolicyInterface {
protected $id;
protected $phid;
protected $blueprintPHID;
protected $status;
protected $until;
protected $type;
protected $attributes = array();
protected $capabilities = array();
protected $ownerPHID;
private $blueprint = self::ATTACHABLE;
private $unconsumedCommands = self::ATTACHABLE;
private $isAllocated = false;
private $isActivated = false;
private $activateWhenAllocated = false;
private $slotLocks = array();
protected function getConfiguration() {
return array(
self::CONFIG_AUX_PHID => true,
self::CONFIG_SERIALIZATION => array(
'attributes' => self::SERIALIZATION_JSON,
'capabilities' => self::SERIALIZATION_JSON,
),
self::CONFIG_COLUMN_SCHEMA => array(
'ownerPHID' => 'phid?',
'status' => 'text32',
'type' => 'text64',
'until' => 'epoch?',
),
self::CONFIG_KEY_SCHEMA => array(
'key_type' => array(
'columns' => array('type', 'status'),
),
'key_blueprint' => array(
'columns' => array('blueprintPHID', 'status'),
),
),
) + parent::getConfiguration();
}
public function generatePHID() {
return PhabricatorPHID::generateNewPHID(DrydockResourcePHIDType::TYPECONST);
}
public function getResourceName() {
return $this->getBlueprint()->getResourceName($this);
}
public function getAttribute($key, $default = null) {
return idx($this->attributes, $key, $default);
}
public function getAttributesForTypeSpec(array $attribute_names) {
return array_select_keys($this->attributes, $attribute_names);
}
public function setAttribute($key, $value) {
$this->attributes[$key] = $value;
return $this;
}
public function getCapability($key, $default = null) {
return idx($this->capbilities, $key, $default);
}
public function getInterface(DrydockLease $lease, $type) {
return $this->getBlueprint()->getInterface($this, $lease, $type);
}
public function getBlueprint() {
return $this->assertAttached($this->blueprint);
}
public function attachBlueprint(DrydockBlueprint $blueprint) {
$this->blueprint = $blueprint;
return $this;
}
public function getUnconsumedCommands() {
return $this->assertAttached($this->unconsumedCommands);
}
public function attachUnconsumedCommands(array $commands) {
$this->unconsumedCommands = $commands;
return $this;
}
public function isReleasing() {
foreach ($this->getUnconsumedCommands() as $command) {
if ($command->getCommand() == DrydockCommand::COMMAND_RELEASE) {
return true;
}
}
return false;
}
public function setActivateWhenAllocated($activate) {
$this->activateWhenAllocated = $activate;
return $this;
}
public function needSlotLock($key) {
$this->slotLocks[] = $key;
return $this;
}
public function allocateResource() {
// We expect resources to have a pregenerated PHID, as they should have
// been created by a call to DrydockBlueprint->newResourceTemplate().
if (!$this->getPHID()) {
throw new Exception(
pht(
'Trying to allocate a resource with no generated PHID. Use "%s" to '.
'create new resource templates.',
'newResourceTemplate()'));
}
$expect_status = DrydockResourceStatus::STATUS_PENDING;
$actual_status = $this->getStatus();
if ($actual_status != $expect_status) {
throw new Exception(
pht(
'Trying to allocate a resource from the wrong status. Status must '.
'be "%s", actually "%s".',
$expect_status,
$actual_status));
}
if ($this->activateWhenAllocated) {
$new_status = DrydockResourceStatus::STATUS_ACTIVE;
} else {
$new_status = DrydockResourceStatus::STATUS_PENDING;
}
$this->openTransaction();
try {
DrydockSlotLock::acquireLocks($this->getPHID(), $this->slotLocks);
$this->slotLocks = array();
} catch (DrydockSlotLockException $ex) {
$this->killTransaction();
if ($this->getID()) {
$log_target = $this;
} else {
// If we don't have an ID, we have to log this on the blueprint, as the
// resource is not going to be saved so the PHID will vanish.
$log_target = $this->getBlueprint();
}
$log_target->logEvent(
DrydockSlotLockFailureLogType::LOGCONST,
array(
'locks' => $ex->getLockMap(),
));
throw $ex;
}
$this
->setStatus($new_status)
->save();
$this->saveTransaction();
$this->isAllocated = true;
if ($new_status == DrydockResourceStatus::STATUS_ACTIVE) {
$this->didActivate();
}
return $this;
}
public function isAllocatedResource() {
return $this->isAllocated;
}
public function activateResource() {
if (!$this->getID()) {
throw new Exception(
pht(
'Trying to activate a resource which has not yet been persisted.'));
}
$expect_status = DrydockResourceStatus::STATUS_PENDING;
$actual_status = $this->getStatus();
if ($actual_status != $expect_status) {
throw new Exception(
pht(
'Trying to activate a resource from the wrong status. Status must '.
'be "%s", actually "%s".',
$expect_status,
$actual_status));
}
$this->openTransaction();
try {
DrydockSlotLock::acquireLocks($this->getPHID(), $this->slotLocks);
$this->slotLocks = array();
} catch (DrydockSlotLockException $ex) {
$this->killTransaction();
$this->logEvent(
DrydockSlotLockFailureLogType::LOGCONST,
array(
'locks' => $ex->getLockMap(),
));
throw $ex;
}
$this
->setStatus(DrydockResourceStatus::STATUS_ACTIVE)
->save();
$this->saveTransaction();
$this->isActivated = true;
$this->didActivate();
return $this;
}
public function isActivatedResource() {
return $this->isActivated;
}
public function canRelease() {
switch ($this->getStatus()) {
case DrydockResourceStatus::STATUS_RELEASED:
case DrydockResourceStatus::STATUS_DESTROYED:
return false;
default:
return true;
}
}
public function scheduleUpdate($epoch = null) {
PhabricatorWorker::scheduleTask(
'DrydockResourceUpdateWorker',
array(
'resourcePHID' => $this->getPHID(),
'isExpireTask' => ($epoch !== null),
),
array(
'objectPHID' => $this->getPHID(),
'delayUntil' => ($epoch ? (int)$epoch : null),
));
}
private function didActivate() {
$viewer = PhabricatorUser::getOmnipotentUser();
$need_update = false;
$commands = id(new DrydockCommandQuery())
->setViewer($viewer)
->withTargetPHIDs(array($this->getPHID()))
->withConsumed(false)
->execute();
if ($commands) {
$need_update = true;
}
if ($need_update) {
$this->scheduleUpdate();
}
$expires = $this->getUntil();
if ($expires) {
$this->scheduleUpdate($expires);
}
}
public function canReceiveCommands() {
switch ($this->getStatus()) {
case DrydockResourceStatus::STATUS_RELEASED:
case DrydockResourceStatus::STATUS_BROKEN:
case DrydockResourceStatus::STATUS_DESTROYED:
return false;
default:
return true;
}
}
public function isActive() {
switch ($this->getStatus()) {
case DrydockResourceStatus::STATUS_ACTIVE:
return true;
}
return false;
}
public function logEvent($type, array $data = array()) {
$log = id(new DrydockLog())
->setEpoch(PhabricatorTime::getNow())
->setType($type)
->setData($data);
$log->setResourcePHID($this->getPHID());
$log->setBlueprintPHID($this->getBlueprintPHID());
return $log->save();
}
/* -( PhabricatorPolicyInterface )----------------------------------------- */
public function getCapabilities() {
return array(
PhabricatorPolicyCapability::CAN_VIEW,
PhabricatorPolicyCapability::CAN_EDIT,
);
}
public function getPolicy($capability) {
return $this->getBlueprint()->getPolicy($capability);
}
public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
return $this->getBlueprint()->hasAutomaticCapability(
$capability,
$viewer);
}
public function describeAutomaticCapability($capability) {
return pht('Resources inherit the policies of their blueprints.');
}
}

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