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HarbormasterBuildEngine.php
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			<?php

			/**
			* Moves a build forward by queuing build tasks, canceling or restarting the
			* build, or failing it in response to task failures.
			*/
			final class HarbormasterBuildEngine extends Phobject {

			private $build;
			private $viewer;
			private $newBuildTargets = array();
			private $artifactReleaseQueue = array();
			private $forceBuildableUpdate;

			public function setForceBuildableUpdate($force_buildable_update) {
			$this->forceBuildableUpdate = $force_buildable_update;
			return $this;
			}

			public function shouldForceBuildableUpdate() {
			return $this->forceBuildableUpdate;
			}

			public function queueNewBuildTarget(HarbormasterBuildTarget $target) {
			$this->newBuildTargets[] = $target;
			return $this;
			}

			public function getNewBuildTargets() {
			return $this->newBuildTargets;
			}

			public function setViewer(PhabricatorUser $viewer) {
			$this->viewer = $viewer;
			return $this;
			}

			public function getViewer() {
			return $this->viewer;
			}

			public function setBuild(HarbormasterBuild $build) {
			$this->build = $build;
			return $this;
			}

			public function getBuild() {
			return $this->build;
			}

			public function continueBuild() {
			$build = $this->getBuild();

			$lock_key = 'harbormaster.build:'.$build->getID();
			$lock = PhabricatorGlobalLock::newLock($lock_key)->lock(15);

			$build->reload();
			$old_status = $build->getBuildStatus();

			try {
			$this->updateBuild($build);
			} catch (Exception $ex) {
			// If any exception is raised, the build is marked as a failure and the
			// exception is re-thrown (this ensures we don't leave builds in an
			// inconsistent state).
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_ERROR);
			$build->save();

			$lock->unlock();

			$this->releaseAllArtifacts($build);

			throw $ex;
			}

			$lock->unlock();

			// NOTE: We queue new targets after releasing the lock so that in-process
			// execution via `bin/harbormaster` does not reenter the locked region.
			foreach ($this->getNewBuildTargets() as $target) {
			$task = PhabricatorWorker::scheduleTask(
			'HarbormasterTargetWorker',
			array(
			'targetID' => $target->getID(),
			),
			array(
			'objectPHID' => $target->getPHID(),
			));
			}

			// If the build changed status, we might need to update the overall status
			// on the buildable.
			$new_status = $build->getBuildStatus();
			if ($new_status != $old_status \|\| $this->shouldForceBuildableUpdate()) {
			$this->updateBuildable($build->getBuildable());
			}

			$this->releaseQueuedArtifacts();

			// If we are no longer building for any reason, release all artifacts.
			if (!$build->isBuilding()) {
			$this->releaseAllArtifacts($build);
			}
			}

			private function updateBuild(HarbormasterBuild $build) {
			if ($build->isAborting()) {
			$this->releaseAllArtifacts($build);
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_ABORTED);
			$build->save();
			}

			if (($build->getBuildStatus() == HarbormasterBuildStatus::STATUS_PENDING) \|\|
			($build->isRestarting())) {
			$this->restartBuild($build);
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_BUILDING);
			$build->save();
			}

			if ($build->isResuming()) {
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_BUILDING);
			$build->save();
			}

			if ($build->isPausing() && !$build->isComplete()) {
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_PAUSED);
			$build->save();
			}

			$build->deleteUnprocessedCommands();

			if ($build->getBuildStatus() == HarbormasterBuildStatus::STATUS_BUILDING) {
			$this->updateBuildSteps($build);
			}
			}

			private function restartBuild(HarbormasterBuild $build) {

			// We're restarting the build, so release all previous artifacts.
			$this->releaseAllArtifacts($build);

			// Increment the build generation counter on the build.
			$build->setBuildGeneration($build->getBuildGeneration() + 1);

			// Currently running targets should periodically check their build
			// generation (which won't have changed) against the build's generation.
			// If it is different, they will automatically stop what they're doing
			// and abort.

			// Previously we used to delete targets, logs and artifacts here. Instead,
			// leave them around so users can view previous generations of this build.
			}

			private function updateBuildSteps(HarbormasterBuild $build) {
			$all_targets = id(new HarbormasterBuildTargetQuery())
			->setViewer($this->getViewer())
			->withBuildPHIDs(array($build->getPHID()))
			->withBuildGenerations(array($build->getBuildGeneration()))
			->execute();

			$this->updateWaitingTargets($all_targets);

			$targets = mgroup($all_targets, 'getBuildStepPHID');

			$steps = id(new HarbormasterBuildStepQuery())
			->setViewer($this->getViewer())
			->withBuildPlanPHIDs(array($build->getBuildPlan()->getPHID()))
			->execute();
			$steps = mpull($steps, null, 'getPHID');

			// Identify steps which are in various states.

			$queued = array();
			$underway = array();
			$waiting = array();
			$complete = array();
			$failed = array();
			foreach ($steps as $step) {
			$step_targets = idx($targets, $step->getPHID(), array());

			if ($step_targets) {
			$is_queued = false;

			$is_underway = false;
			foreach ($step_targets as $target) {
			if ($target->isUnderway()) {
			$is_underway = true;
			break;
			}
			}

			$is_waiting = false;
			foreach ($step_targets as $target) {
			if ($target->isWaiting()) {
			$is_waiting = true;
			break;
			}
			}

			$is_complete = true;
			foreach ($step_targets as $target) {
			if (!$target->isComplete()) {
			$is_complete = false;
			break;
			}
			}

			$is_failed = false;
			foreach ($step_targets as $target) {
			if ($target->isFailed()) {
			$is_failed = true;
			break;
			}
			}
			} else {
			$is_queued = true;
			$is_underway = false;
			$is_waiting = false;
			$is_complete = false;
			$is_failed = false;
			}

			if ($is_queued) {
			$queued[$step->getPHID()] = true;
			}

			if ($is_underway) {
			$underway[$step->getPHID()] = true;
			}

			if ($is_waiting) {
			$waiting[$step->getPHID()] = true;
			}

			if ($is_complete) {
			$complete[$step->getPHID()] = true;
			}

			if ($is_failed) {
			$failed[$step->getPHID()] = true;
			}
			}

			// If any step failed, fail the whole build, then bail.
			if (count($failed)) {
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_FAILED);
			$build->save();
			return;
			}

			// If every step is complete, we're done with this build. Mark it passed
			// and bail.
			if (count($complete) == count($steps)) {
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_PASSED);
			$build->save();
			return;
			}

			// Release any artifacts which are not inputs to any remaining build
			// step. We're done with these, so something else is free to use them.
			$ongoing_phids = array_keys($queued + $waiting + $underway);
			$ongoing_steps = array_select_keys($steps, $ongoing_phids);
			$this->releaseUnusedArtifacts($all_targets, $ongoing_steps);

			// Identify all the steps which are ready to run (because all their
			// dependencies are complete).

			$runnable = array();
			foreach ($steps as $step) {
			$dependencies = $step->getStepImplementation()->getDependencies($step);

			if (isset($queued[$step->getPHID()])) {
			$can_run = true;
			foreach ($dependencies as $dependency) {
			if (empty($complete[$dependency])) {
			$can_run = false;
			break;
			}
			}

			if ($can_run) {
			$runnable[] = $step;
			}
			}
			}

			if (!$runnable && !$waiting && !$underway) {
			// This means the build is deadlocked, and the user has configured
			// circular dependencies.
			$build->setBuildStatus(HarbormasterBuildStatus::STATUS_DEADLOCKED);
			$build->save();
			return;
			}

			foreach ($runnable as $runnable_step) {
			$target = HarbormasterBuildTarget::initializeNewBuildTarget(
			$build,
			$runnable_step,
			$build->retrieveVariablesFromBuild());
			$target->save();

			$this->queueNewBuildTarget($target);
			}
			}


			/**
			* Release any artifacts which aren't used by any running or waiting steps.
			*
			* This releases artifacts as soon as they're no longer used. This can be
			* particularly relevant when a build uses multiple hosts since it returns
			* hosts to the pool more quickly.
			*
			* @param list<HarbormasterBuildTarget> Targets in the build.
			* @param list<HarbormasterBuildStep> List of running and waiting steps.
			* @return void
			*/
			private function releaseUnusedArtifacts(array $targets, array $steps) {
			assert_instances_of($targets, 'HarbormasterBuildTarget');
			assert_instances_of($steps, 'HarbormasterBuildStep');

			if (!$targets \|\| !$steps) {
			return;
			}

			$target_phids = mpull($targets, 'getPHID');

			$artifacts = id(new HarbormasterBuildArtifactQuery())
			->setViewer($this->getViewer())
			->withBuildTargetPHIDs($target_phids)
			->withIsReleased(false)
			->execute();
			if (!$artifacts) {
			return;
			}

			// Collect all the artifacts that remaining build steps accept as inputs.
			$must_keep = array();
			foreach ($steps as $step) {
			$inputs = $step->getStepImplementation()->getArtifactInputs();
			foreach ($inputs as $input) {
			$artifact_key = $input['key'];
			$must_keep[$artifact_key] = true;
			}
			}

			// Queue unreleased artifacts which no remaining step uses for immediate
			// release.
			foreach ($artifacts as $artifact) {
			$key = $artifact->getArtifactKey();
			if (isset($must_keep[$key])) {
			continue;
			}

			$this->artifactReleaseQueue[] = $artifact;
			}
			}


			/**
			* Process messages which were sent to these targets, kicking applicable
			* targets out of "Waiting" and into either "Passed" or "Failed".
			*
			* @param list<HarbormasterBuildTarget> List of targets to process.
			* @return void
			*/
			private function updateWaitingTargets(array $targets) {
			assert_instances_of($targets, 'HarbormasterBuildTarget');

			// We only care about messages for targets which are actually in a waiting
			// state.
			$waiting_targets = array();
			foreach ($targets as $target) {
			if ($target->isWaiting()) {
			$waiting_targets[$target->getPHID()] = $target;
			}
			}

			if (!$waiting_targets) {
			return;
			}

			$messages = id(new HarbormasterBuildMessageQuery())
			->setViewer($this->getViewer())
			->withReceiverPHIDs(array_keys($waiting_targets))
			->withConsumed(false)
			->execute();

			foreach ($messages as $message) {
			$target = $waiting_targets[$message->getReceiverPHID()];

			switch ($message->getType()) {
			case HarbormasterMessageType::MESSAGE_PASS:
			$new_status = HarbormasterBuildTarget::STATUS_PASSED;
			break;
			case HarbormasterMessageType::MESSAGE_FAIL:
			$new_status = HarbormasterBuildTarget::STATUS_FAILED;
			break;
			case HarbormasterMessageType::MESSAGE_WORK:
			default:
			$new_status = null;
			break;
			}

			if ($new_status !== null) {
			$message->setIsConsumed(true);
			$message->save();

			$target->setTargetStatus($new_status);

			if ($target->isComplete()) {
			$target->setDateCompleted(PhabricatorTime::getNow());
			}

			$target->save();
			}
			}
			}


			/**
			* Update the overall status of the buildable this build is attached to.
			*
			* After a build changes state (for example, passes or fails) it may affect
			* the overall state of the associated buildable. Compute the new aggregate
			* state and save it on the buildable.
			*
			* @param HarbormasterBuild The buildable to update.
			* @return void
			*/
			public function updateBuildable(HarbormasterBuildable $buildable) {
			$viewer = $this->getViewer();

			$lock_key = 'harbormaster.buildable:'.$buildable->getID();
			$lock = PhabricatorGlobalLock::newLock($lock_key)->lock(15);

			$buildable = id(new HarbormasterBuildableQuery())
			->setViewer($viewer)
			->withIDs(array($buildable->getID()))
			->needBuilds(true)
			->executeOne();

			$messages = id(new HarbormasterBuildMessageQuery())
			->setViewer($viewer)
			->withReceiverPHIDs(array($buildable->getPHID()))
			->withConsumed(false)
			->execute();

			$done_preparing = false;
			$update_container = false;
			foreach ($messages as $message) {
			switch ($message->getType()) {
			case HarbormasterMessageType::BUILDABLE_BUILD:
			$done_preparing = true;
			break;
			case HarbormasterMessageType::BUILDABLE_CONTAINER:
			$update_container = true;
			break;
			default:
			break;
			}

			$message
			->setIsConsumed(true)
			->save();
			}

			// If we received a "build" command, all builds are scheduled and we can
			// move out of "preparing" into "building".
			if ($done_preparing) {
			if ($buildable->isPreparing()) {
			$buildable
			->setBuildableStatus(HarbormasterBuildableStatus::STATUS_BUILDING)
			->save();
			}
			}

			// If we've been informed that the container for the buildable has
			// changed, update it.
			if ($update_container) {
			$object = id(new PhabricatorObjectQuery())
			->setViewer($viewer)
			->withPHIDs(array($buildable->getBuildablePHID()))
			->executeOne();
			if ($object) {
			$buildable
			->setContainerPHID($object->getHarbormasterContainerPHID())
			->save();
			}
			}

			$old = clone $buildable;

			// Don't update the buildable status if we're still preparing builds: more
			// builds may still be scheduled shortly, so even if every build we know
			// about so far has passed, that doesn't mean the buildable has actually
			// passed everything it needs to.

			if (!$buildable->isPreparing()) {
			$all_pass = true;
			$any_fail = false;
			foreach ($buildable->getBuilds() as $build) {
			if (!$build->isPassed()) {
			$all_pass = false;
			}

			if ($build->isComplete() && !$build->isPassed()) {
			$any_fail = true;
			}
			}

			if ($any_fail) {
			$new_status = HarbormasterBuildableStatus::STATUS_FAILED;
			} else if ($all_pass) {
			$new_status = HarbormasterBuildableStatus::STATUS_PASSED;
			} else {
			$new_status = HarbormasterBuildableStatus::STATUS_BUILDING;
			}

			$did_update = ($old->getBuildableStatus() !== $new_status);
			if ($did_update) {
			$buildable->setBuildableStatus($new_status);
			$buildable->save();
			}
			}

			$lock->unlock();

			// Don't publish anything if we're still preparing builds.
			if ($buildable->isPreparing()) {
			return;
			}

			$this->publishBuildable($old, $buildable);
			}

			public function publishBuildable(
			HarbormasterBuildable $old,
			HarbormasterBuildable $new) {

			$viewer = $this->getViewer();

			// Publish the buildable. We publish buildables even if they haven't
			// changed status in Harbormaster because applications may care about
			// different things than Harbormaster does. For example, Differential
			// does not care about local lint and unit tests when deciding whether
			// a revision should move out of draft or not.

			// NOTE: We're publishing both automatic and manual buildables. Buildable
			// objects should generally ignore manual buildables, but it's up to them
			// to decide.

			$object = id(new PhabricatorObjectQuery())
			->setViewer($viewer)
			->withPHIDs(array($new->getBuildablePHID()))
			->executeOne();
			if (!$object) {
			return;
			}

			$engine = HarbormasterBuildableEngine::newForObject($object, $viewer);

			$daemon_source = PhabricatorContentSource::newForSource(
			PhabricatorDaemonContentSource::SOURCECONST);

			$harbormaster_phid = id(new PhabricatorHarbormasterApplication())
			->getPHID();

			$engine
			->setActingAsPHID($harbormaster_phid)
			->setContentSource($daemon_source)
			->publishBuildable($old, $new);
			}

			private function releaseAllArtifacts(HarbormasterBuild $build) {
			$targets = id(new HarbormasterBuildTargetQuery())
			->setViewer(PhabricatorUser::getOmnipotentUser())
			->withBuildPHIDs(array($build->getPHID()))
			->withBuildGenerations(array($build->getBuildGeneration()))
			->execute();

			if (count($targets) === 0) {
			return;
			}

			$target_phids = mpull($targets, 'getPHID');

			$artifacts = id(new HarbormasterBuildArtifactQuery())
			->setViewer(PhabricatorUser::getOmnipotentUser())
			->withBuildTargetPHIDs($target_phids)
			->withIsReleased(false)
			->execute();
			foreach ($artifacts as $artifact) {
			$artifact->releaseArtifact();
			}
			}

			private function releaseQueuedArtifacts() {
			foreach ($this->artifactReleaseQueue as $key => $artifact) {
			$artifact->releaseArtifact();
			unset($this->artifactReleaseQueue[$key]);
			}
			}

			}

phab/src/applications/harbormaster/engine/HarbormasterBuildEngine.php409e207378b4feature/testing

HarbormasterBuildEngine.phpView Options

phab/src/applications/harbormaster/engine/HarbormasterBuildEngine.php
409e207378b4feature/testing

HarbormasterBuildEngine.php
View Options