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	diff --git a/src/applications/differential/editor/DifferentialTransactionEditor.php b/src/applications/differential/editor/DifferentialTransactionEditor.php
	index 063df6c602..a092bf2693 100644
	--- a/src/applications/differential/editor/DifferentialTransactionEditor.php
	+++ b/src/applications/differential/editor/DifferentialTransactionEditor.php
	@@ -1,1765 +1,1766 @@
	<?php

	final class DifferentialTransactionEditor
	extends PhabricatorApplicationTransactionEditor {

	private $changedPriorToCommitURI;
	private $isCloseByCommit;
	private $repositoryPHIDOverride = false;
	private $didExpandInlineState = false;
	private $hasReviewTransaction = false;
	private $affectedPaths;
	private $firstBroadcast = false;
	private $wasDraft = false;

	public function getEditorApplicationClass() {
	return 'PhabricatorDifferentialApplication';
	}

	public function getEditorObjectsDescription() {
	return pht('Differential Revisions');
	}

	public function getCreateObjectTitle($author, $object) {
	return pht('%s created this revision.', $author);
	}

	public function getCreateObjectTitleForFeed($author, $object) {
	return pht('%s created %s.', $author, $object);
	}

	public function isFirstBroadcast() {
	return $this->firstBroadcast;
	}

	public function getDiffUpdateTransaction(array $xactions) {
	$type_update = DifferentialTransaction::TYPE_UPDATE;

	foreach ($xactions as $xaction) {
	if ($xaction->getTransactionType() == $type_update) {
	return $xaction;
	}
	}

	return null;
	}

	public function setIsCloseByCommit($is_close_by_commit) {
	$this->isCloseByCommit = $is_close_by_commit;
	return $this;
	}

	public function getIsCloseByCommit() {
	return $this->isCloseByCommit;
	}

	public function setChangedPriorToCommitURI($uri) {
	$this->changedPriorToCommitURI = $uri;
	return $this;
	}

	public function getChangedPriorToCommitURI() {
	return $this->changedPriorToCommitURI;
	}

	public function setRepositoryPHIDOverride($phid_or_null) {
	$this->repositoryPHIDOverride = $phid_or_null;
	return $this;
	}

	public function getTransactionTypes() {
	$types = parent::getTransactionTypes();

	$types[] = PhabricatorTransactions::TYPE_COMMENT;
	$types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
	$types[] = PhabricatorTransactions::TYPE_EDIT_POLICY;
	$types[] = PhabricatorTransactions::TYPE_INLINESTATE;

	$types[] = DifferentialTransaction::TYPE_INLINE;
	$types[] = DifferentialTransaction::TYPE_UPDATE;

	return $types;
	}

	protected function getCustomTransactionOldValue(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {

	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_INLINE:
	return null;
	case DifferentialTransaction::TYPE_UPDATE:
	if ($this->getIsNewObject()) {
	return null;
	} else {
	return $object->getActiveDiff()->getPHID();
	}
	}

	return parent::getCustomTransactionOldValue($object, $xaction);
	}

	protected function getCustomTransactionNewValue(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {

	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_UPDATE:
	return $xaction->getNewValue();
	case DifferentialTransaction::TYPE_INLINE:
	return null;
	}

	return parent::getCustomTransactionNewValue($object, $xaction);
	}

	protected function applyCustomInternalTransaction(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {

	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_INLINE:
	return;
	case DifferentialTransaction::TYPE_UPDATE:
	if (!$this->getIsCloseByCommit()) {
	if ($object->isNeedsRevision() \|\|
	$object->isChangePlanned() \|\|
	$object->isAbandoned()) {
	$object->setModernRevisionStatus(
	DifferentialRevisionStatus::NEEDS_REVIEW);
	}
	}

	$diff = $this->requireDiff($xaction->getNewValue());

	$this->updateRevisionLineCounts($object, $diff);

	if ($this->repositoryPHIDOverride !== false) {
	$object->setRepositoryPHID($this->repositoryPHIDOverride);
	} else {
	$object->setRepositoryPHID($diff->getRepositoryPHID());
	}

	$object->attachActiveDiff($diff);
	$object->setActiveDiffPHID($diff->getPHID());
	return;
	}

	return parent::applyCustomInternalTransaction($object, $xaction);
	}

	protected function expandTransactions(
	PhabricatorLiskDAO $object,
	array $xactions) {

	foreach ($xactions as $xaction) {
	switch ($xaction->getTransactionType()) {
	case PhabricatorTransactions::TYPE_INLINESTATE:
	// If we have an "Inline State" transaction already, the caller
	// built it for us so we don't need to expand it again.
	$this->didExpandInlineState = true;
	break;
	case DifferentialRevisionAcceptTransaction::TRANSACTIONTYPE:
	case DifferentialRevisionRejectTransaction::TRANSACTIONTYPE:
	case DifferentialRevisionResignTransaction::TRANSACTIONTYPE:
	// If we have a review transaction, we'll skip marking the user
	// as "Commented" later. This should get cleaner after T10967.
	$this->hasReviewTransaction = true;
	break;
	}
	}

	$this->wasDraft = $object->isDraft();

	return parent::expandTransactions($object, $xactions);
	}

	protected function expandTransaction(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {

	$results = parent::expandTransaction($object, $xaction);

	$actor = $this->getActor();
	$actor_phid = $this->getActingAsPHID();
	$type_edge = PhabricatorTransactions::TYPE_EDGE;

	$edge_ref_task = DifferentialRevisionHasTaskEdgeType::EDGECONST;

	$is_sticky_accept = PhabricatorEnv::getEnvConfig(
	'differential.sticky-accept');

	$downgrade_rejects = false;
	$downgrade_accepts = false;
	if ($this->getIsCloseByCommit()) {
	// Never downgrade reviewers when we're closing a revision after a
	// commit.
	} else {
	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_UPDATE:
	$downgrade_rejects = true;
	if (!$is_sticky_accept) {
	// If "sticky accept" is disabled, also downgrade the accepts.
	$downgrade_accepts = true;
	}
	break;
	case DifferentialRevisionRequestReviewTransaction::TRANSACTIONTYPE:
	$downgrade_rejects = true;
	if ((!$is_sticky_accept) \|\|
	(!$object->isChangePlanned())) {
	// If the old state isn't "changes planned", downgrade the accepts.
	// This exception allows an accepted revision to go through
	// "Plan Changes" -> "Request Review" and return to "accepted" if
	// the author didn't update the revision, essentially undoing the
	// "Plan Changes".
	$downgrade_accepts = true;
	}
	break;
	}
	}

	$new_accept = DifferentialReviewerStatus::STATUS_ACCEPTED;
	$new_reject = DifferentialReviewerStatus::STATUS_REJECTED;
	$old_accept = DifferentialReviewerStatus::STATUS_ACCEPTED_OLDER;
	$old_reject = DifferentialReviewerStatus::STATUS_REJECTED_OLDER;

	$downgrade = array();
	if ($downgrade_accepts) {
	$downgrade[] = DifferentialReviewerStatus::STATUS_ACCEPTED;
	}

	if ($downgrade_rejects) {
	$downgrade[] = DifferentialReviewerStatus::STATUS_REJECTED;
	}

	if ($downgrade) {
	$void_type = DifferentialRevisionVoidTransaction::TRANSACTIONTYPE;

	$results[] = id(new DifferentialTransaction())
	->setTransactionType($void_type)
	->setIgnoreOnNoEffect(true)
	->setNewValue($downgrade);
	}

	$is_commandeer = false;
	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_UPDATE:
	if ($this->getIsCloseByCommit()) {
	// Don't bother with any of this if this update is a side effect of
	// commit detection.
	break;
	}

	// When a revision is updated and the diff comes from a branch named
	// "T123" or similar, automatically associate the commit with the
	// task that the branch names.

	$maniphest = 'PhabricatorManiphestApplication';
	if (PhabricatorApplication::isClassInstalled($maniphest)) {
	$diff = $this->requireDiff($xaction->getNewValue());
	$branch = $diff->getBranch();

	// No "$", to allow for branches like T123_demo.
	$match = null;
	if (preg_match('/^T(\d+)/i', $branch, $match)) {
	$task_id = $match[1];
	$tasks = id(new ManiphestTaskQuery())
	->setViewer($this->getActor())
	->withIDs(array($task_id))
	->execute();
	if ($tasks) {
	$task = head($tasks);
	$task_phid = $task->getPHID();

	$results[] = id(new DifferentialTransaction())
	->setTransactionType($type_edge)
	->setMetadataValue('edge:type', $edge_ref_task)
	->setIgnoreOnNoEffect(true)
	->setNewValue(array('+' => array($task_phid => $task_phid)));
	}
	}
	}
	break;

	case DifferentialRevisionCommandeerTransaction::TRANSACTIONTYPE:
	$is_commandeer = true;
	break;
	}

	if ($is_commandeer) {
	$results[] = $this->newCommandeerReviewerTransaction($object);
	}

	if (!$this->didExpandInlineState) {
	switch ($xaction->getTransactionType()) {
	case PhabricatorTransactions::TYPE_COMMENT:
	case DifferentialTransaction::TYPE_UPDATE:
	case DifferentialTransaction::TYPE_INLINE:
	$this->didExpandInlineState = true;

	$actor_phid = $this->getActingAsPHID();
	$actor_is_author = ($object->getAuthorPHID() == $actor_phid);
	if (!$actor_is_author) {
	break;
	}

	$state_map = PhabricatorTransactions::getInlineStateMap();

	$inlines = id(new DifferentialDiffInlineCommentQuery())
	->setViewer($this->getActor())
	->withRevisionPHIDs(array($object->getPHID()))
	->withFixedStates(array_keys($state_map))
	->execute();

	if (!$inlines) {
	break;
	}

	$old_value = mpull($inlines, 'getFixedState', 'getPHID');
	$new_value = array();
	foreach ($old_value as $key => $state) {
	$new_value[$key] = $state_map[$state];
	}

	$results[] = id(new DifferentialTransaction())
	->setTransactionType(PhabricatorTransactions::TYPE_INLINESTATE)
	->setIgnoreOnNoEffect(true)
	->setOldValue($old_value)
	->setNewValue($new_value);
	break;
	}
	}

	return $results;
	}

	protected function applyCustomExternalTransaction(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {

	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_INLINE:
	$reply = $xaction->getComment()->getReplyToComment();
	if ($reply && !$reply->getHasReplies()) {
	$reply->setHasReplies(1)->save();
	}
	return;
	case DifferentialTransaction::TYPE_UPDATE:
	// Now that we're inside the transaction, do a final check.
	$diff = $this->requireDiff($xaction->getNewValue());

	// TODO: It would be slightly cleaner to just revalidate this
	// transaction somehow using the same validation code, but that's
	// not easy to do at the moment.

	$revision_id = $diff->getRevisionID();
	if ($revision_id && ($revision_id != $object->getID())) {
	throw new Exception(
	pht(
	'Diff is already attached to another revision. You lost '.
	'a race?'));
	}

	// TODO: This can race with diff updates, particularly those from
	// Harbormaster. See discussion in T8650.
	$diff->setRevisionID($object->getID());
	$diff->save();

	- // Update Harbormaster to set the containerPHID correctly for any
	- // existing buildables. We may otherwise have buildables stuck with
	- // the old (`null`) container.
	-
	- // TODO: This is a bit iffy, maybe we can find a cleaner approach?
	- // In particular, this could (rarely) be overwritten by Harbormaster
	- // workers.
	- $table = new HarbormasterBuildable();
	- $conn_w = $table->establishConnection('w');
	- queryfx(
	- $conn_w,
	- 'UPDATE %T SET containerPHID = %s WHERE buildablePHID = %s',
	- $table->getTableName(),
	- $object->getPHID(),
	- $diff->getPHID());
	+ // If there are any outstanding buildables for this diff, tell
	+ // Harbormaster that their containers need to be updated. This is
	+ // common, because `arc` creates buildables so it can upload lint
	+ // and unit results.
	+
	+ $buildables = id(new HarbormasterBuildableQuery())
	+ ->setViewer(PhabricatorUser::getOmnipotentUser())
	+ ->withManualBuildables(false)
	+ ->withBuildablePHIDs(array($diff->getPHID()))
	+ ->execute();
	+ foreach ($buildables as $buildable) {
	+ $buildable->sendMessage(
	+ $this->getActor(),
	+ HarbormasterMessageType::BUILDABLE_CONTAINER,
	+ true);
	+ }

	return;
	}

	return parent::applyCustomExternalTransaction($object, $xaction);
	}

	protected function applyBuiltinExternalTransaction(
	PhabricatorLiskDAO $object,
	PhabricatorApplicationTransaction $xaction) {

	switch ($xaction->getTransactionType()) {
	case PhabricatorTransactions::TYPE_INLINESTATE:
	$table = new DifferentialTransactionComment();
	$conn_w = $table->establishConnection('w');
	foreach ($xaction->getNewValue() as $phid => $state) {
	queryfx(
	$conn_w,
	'UPDATE %T SET fixedState = %s WHERE phid = %s',
	$table->getTableName(),
	$state,
	$phid);
	}
	break;
	}

	return parent::applyBuiltinExternalTransaction($object, $xaction);
	}

	protected function applyFinalEffects(
	PhabricatorLiskDAO $object,
	array $xactions) {

	// Load the most up-to-date version of the revision and its reviewers,
	// so we don't need to try to deduce the state of reviewers by examining
	// all the changes made by the transactions. Then, update the reviewers
	// on the object to make sure we're acting on the current reviewer set
	// (and, for example, sending mail to the right people).

	$new_revision = id(new DifferentialRevisionQuery())
	->setViewer($this->getActor())
	->needReviewers(true)
	->needActiveDiffs(true)
	->withIDs(array($object->getID()))
	->executeOne();
	if (!$new_revision) {
	throw new Exception(
	pht('Failed to load revision from transaction finalization.'));
	}

	$object->attachReviewers($new_revision->getReviewers());
	$object->attachActiveDiff($new_revision->getActiveDiff());
	$object->attachRepository($new_revision->getRepository());

	foreach ($xactions as $xaction) {
	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_UPDATE:
	$diff = $this->requireDiff($xaction->getNewValue(), true);

	// Update these denormalized index tables when we attach a new
	// diff to a revision.

	$this->updateRevisionHashTable($object, $diff);
	$this->updateAffectedPathTable($object, $diff);
	break;
	}
	}

	$xactions = $this->updateReviewStatus($object, $xactions);
	$this->markReviewerComments($object, $xactions);

	return $xactions;
	}

	private function updateReviewStatus(
	DifferentialRevision $revision,
	array $xactions) {

	$was_accepted = $revision->isAccepted();
	$was_revision = $revision->isNeedsRevision();
	$was_review = $revision->isNeedsReview();
	if (!$was_accepted && !$was_revision && !$was_review) {
	// Revisions can't transition out of other statuses (like closed or
	// abandoned) as a side effect of reviewer status changes.
	return $xactions;
	}

	// Try to move a revision to "accepted". We look for:
	//
	// - at least one accepting reviewer who is a user; and
	// - no rejects; and
	// - no rejects of older diffs; and
	// - no blocking reviewers.

	$has_accepting_user = false;
	$has_rejecting_reviewer = false;
	$has_rejecting_older_reviewer = false;
	$has_blocking_reviewer = false;

	$active_diff = $revision->getActiveDiff();
	foreach ($revision->getReviewers() as $reviewer) {
	$reviewer_status = $reviewer->getReviewerStatus();
	switch ($reviewer_status) {
	case DifferentialReviewerStatus::STATUS_REJECTED:
	$active_phid = $active_diff->getPHID();
	if ($reviewer->isRejected($active_phid)) {
	$has_rejecting_reviewer = true;
	} else {
	$has_rejecting_older_reviewer = true;
	}
	break;
	case DifferentialReviewerStatus::STATUS_REJECTED_OLDER:
	$has_rejecting_older_reviewer = true;
	break;
	case DifferentialReviewerStatus::STATUS_BLOCKING:
	$has_blocking_reviewer = true;
	break;
	case DifferentialReviewerStatus::STATUS_ACCEPTED:
	if ($reviewer->isUser()) {
	$active_phid = $active_diff->getPHID();
	if ($reviewer->isAccepted($active_phid)) {
	$has_accepting_user = true;
	}
	}
	break;
	}
	}

	$new_status = null;
	if ($has_accepting_user &&
	!$has_rejecting_reviewer &&
	!$has_rejecting_older_reviewer &&
	!$has_blocking_reviewer) {
	$new_status = DifferentialRevisionStatus::ACCEPTED;
	} else if ($has_rejecting_reviewer) {
	// This isn't accepted, and there's at least one rejecting reviewer,
	// so the revision needs changes. This usually happens after a
	// "reject".
	$new_status = DifferentialRevisionStatus::NEEDS_REVISION;
	} else if ($was_accepted) {
	// This revision was accepted, but it no longer satisfies the
	// conditions for acceptance. This usually happens after an accepting
	// reviewer resigns or is removed.
	$new_status = DifferentialRevisionStatus::NEEDS_REVIEW;
	}

	if ($new_status === null) {
	return $xactions;
	}

	$old_status = $revision->getModernRevisionStatus();
	if ($new_status == $old_status) {
	return $xactions;
	}

	$xaction = id(new DifferentialTransaction())
	->setTransactionType(
	DifferentialRevisionStatusTransaction::TRANSACTIONTYPE)
	->setOldValue($old_status)
	->setNewValue($new_status);

	$xaction = $this->populateTransaction($revision, $xaction)
	->save();
	$xactions[] = $xaction;

	// Save the status adjustment we made earlier.
	$revision
	->setModernRevisionStatus($new_status)
	->save();

	return $xactions;
	}


	protected function validateTransaction(
	PhabricatorLiskDAO $object,
	$type,
	array $xactions) {

	$errors = parent::validateTransaction($object, $type, $xactions);

	$config_self_accept_key = 'differential.allow-self-accept';
	$allow_self_accept = PhabricatorEnv::getEnvConfig($config_self_accept_key);

	foreach ($xactions as $xaction) {
	switch ($type) {
	case DifferentialTransaction::TYPE_UPDATE:
	$diff = $this->loadDiff($xaction->getNewValue());
	if (!$diff) {
	$errors[] = new PhabricatorApplicationTransactionValidationError(
	$type,
	pht('Invalid'),
	pht('The specified diff does not exist.'),
	$xaction);
	} else if (($diff->getRevisionID()) &&
	($diff->getRevisionID() != $object->getID())) {
	$errors[] = new PhabricatorApplicationTransactionValidationError(
	$type,
	pht('Invalid'),
	pht(
	'You can not update this revision to the specified diff, '.
	'because the diff is already attached to another revision.'),
	$xaction);
	}
	break;
	}
	}

	return $errors;
	}

	protected function sortTransactions(array $xactions) {
	$xactions = parent::sortTransactions($xactions);

	$head = array();
	$tail = array();

	foreach ($xactions as $xaction) {
	$type = $xaction->getTransactionType();
	if ($type == DifferentialTransaction::TYPE_INLINE) {
	$tail[] = $xaction;
	} else {
	$head[] = $xaction;
	}
	}

	return array_values(array_merge($head, $tail));
	}

	protected function shouldPublishFeedStory(
	PhabricatorLiskDAO $object,
	array $xactions) {

	if (!$object->shouldBroadcast()) {
	return false;
	}

	return true;
	}

	protected function shouldSendMail(
	PhabricatorLiskDAO $object,
	array $xactions) {

	if (!$object->shouldBroadcast()) {
	return false;
	}

	return true;
	}

	protected function getMailTo(PhabricatorLiskDAO $object) {
	$this->requireReviewers($object);

	$phids = array();
	$phids[] = $object->getAuthorPHID();
	foreach ($object->getReviewers() as $reviewer) {
	if ($reviewer->isResigned()) {
	continue;
	}

	$phids[] = $reviewer->getReviewerPHID();
	}
	return $phids;
	}

	protected function newMailUnexpandablePHIDs(PhabricatorLiskDAO $object) {
	$this->requireReviewers($object);

	$phids = array();

	foreach ($object->getReviewers() as $reviewer) {
	if ($reviewer->isResigned()) {
	$phids[] = $reviewer->getReviewerPHID();
	}
	}

	return $phids;
	}

	protected function getMailAction(
	PhabricatorLiskDAO $object,
	array $xactions) {

	$show_lines = false;
	if ($this->isFirstBroadcast()) {
	$action = pht('Request');

	$show_lines = true;
	} else {
	$action = parent::getMailAction($object, $xactions);

	$strongest = $this->getStrongestAction($object, $xactions);
	$type_update = DifferentialTransaction::TYPE_UPDATE;
	if ($strongest->getTransactionType() == $type_update) {
	$show_lines = true;
	}
	}

	if ($show_lines) {
	$count = new PhutilNumber($object->getLineCount());
	$action = pht('%s, %s line(s)', $action, $count);
	}

	return $action;
	}

	protected function getMailSubjectPrefix() {
	return PhabricatorEnv::getEnvConfig('metamta.differential.subject-prefix');
	}

	protected function getMailThreadID(PhabricatorLiskDAO $object) {
	// This is nonstandard, but retains threading with older messages.
	$phid = $object->getPHID();
	return "differential-rev-{$phid}-req";
	}

	protected function buildReplyHandler(PhabricatorLiskDAO $object) {
	return id(new DifferentialReplyHandler())
	->setMailReceiver($object);
	}

	protected function buildMailTemplate(PhabricatorLiskDAO $object) {
	$id = $object->getID();
	$title = $object->getTitle();
	$subject = "D{$id}: {$title}";

	return id(new PhabricatorMetaMTAMail())
	->setSubject($subject);
	}

	protected function getTransactionsForMail(
	PhabricatorLiskDAO $object,
	array $xactions) {
	// If this is the first time we're sending mail about this revision, we
	// generate mail for all prior transactions, not just whatever is being
	// applied now. This gets the "added reviewers" lines and other relevant
	// information into the mail.
	if ($this->isFirstBroadcast()) {
	return $this->loadUnbroadcastTransactions($object);
	}

	return $xactions;
	}

	protected function buildMailBody(
	PhabricatorLiskDAO $object,
	array $xactions) {

	$viewer = $this->requireActor();

	$body = new PhabricatorMetaMTAMailBody();
	$body->setViewer($this->requireActor());

	$revision_uri = PhabricatorEnv::getProductionURI('/D'.$object->getID());

	$this->addHeadersAndCommentsToMailBody(
	$body,
	$xactions,
	pht('View Revision'),
	$revision_uri);

	$type_inline = DifferentialTransaction::TYPE_INLINE;

	$inlines = array();
	foreach ($xactions as $xaction) {
	if ($xaction->getTransactionType() == $type_inline) {
	$inlines[] = $xaction;
	}
	}

	if ($inlines) {
	$this->appendInlineCommentsForMail($object, $inlines, $body);
	}

	$changed_uri = $this->getChangedPriorToCommitURI();
	if ($changed_uri) {
	$body->addLinkSection(
	pht('CHANGED PRIOR TO COMMIT'),
	$changed_uri);
	}

	$this->addCustomFieldsToMailBody($body, $object, $xactions);

	$body->addLinkSection(
	pht('REVISION DETAIL'),
	$revision_uri);

	$update_xaction = null;
	foreach ($xactions as $xaction) {
	switch ($xaction->getTransactionType()) {
	case DifferentialTransaction::TYPE_UPDATE:
	$update_xaction = $xaction;
	break;
	}
	}

	if ($update_xaction) {
	$diff = $this->requireDiff($update_xaction->getNewValue(), true);

	$body->addTextSection(
	pht('AFFECTED FILES'),
	$this->renderAffectedFilesForMail($diff));

	$config_key_inline = 'metamta.differential.inline-patches';
	$config_inline = PhabricatorEnv::getEnvConfig($config_key_inline);

	$config_key_attach = 'metamta.differential.attach-patches';
	$config_attach = PhabricatorEnv::getEnvConfig($config_key_attach);

	if ($config_inline \|\| $config_attach) {
	$body_limit = PhabricatorEnv::getEnvConfig('metamta.email-body-limit');

	$patch = $this->buildPatchForMail($diff);
	if ($config_inline) {
	$lines = substr_count($patch, "\n");
	$bytes = strlen($patch);

	// Limit the patch size to the smaller of 256 bytes per line or
	// the mail body limit. This prevents degenerate behavior for patches
	// with one line that is 10MB long. See T11748.
	$byte_limits = array();
	$byte_limits[] = (256 * $config_inline);
	$byte_limits[] = $body_limit;
	$byte_limit = min($byte_limits);

	$lines_ok = ($lines <= $config_inline);
	$bytes_ok = ($bytes <= $byte_limit);

	if ($lines_ok && $bytes_ok) {
	$this->appendChangeDetailsForMail($object, $diff, $patch, $body);
	} else {
	// TODO: Provide a helpful message about the patch being too
	// large or lengthy here.
	}
	}

	if ($config_attach) {
	// See T12033, T11767, and PHI55. This is a crude fix to stop the
	// major concrete problems that lackluster email size limits cause.
	if (strlen($patch) < $body_limit) {
	$name = pht('D%s.%s.patch', $object->getID(), $diff->getID());
	$mime_type = 'text/x-patch; charset=utf-8';
	$body->addAttachment(
	new PhabricatorMetaMTAAttachment($patch, $name, $mime_type));
	}
	}
	}
	}

	return $body;
	}

	public function getMailTagsMap() {
	return array(
	DifferentialTransaction::MAILTAG_REVIEW_REQUEST =>
	pht('A revision is created.'),
	DifferentialTransaction::MAILTAG_UPDATED =>
	pht('A revision is updated.'),
	DifferentialTransaction::MAILTAG_COMMENT =>
	pht('Someone comments on a revision.'),
	DifferentialTransaction::MAILTAG_CLOSED =>
	pht('A revision is closed.'),
	DifferentialTransaction::MAILTAG_REVIEWERS =>
	pht("A revision's reviewers change."),
	DifferentialTransaction::MAILTAG_CC =>
	pht("A revision's CCs change."),
	DifferentialTransaction::MAILTAG_OTHER =>
	pht('Other revision activity not listed above occurs.'),
	);
	}

	protected function supportsSearch() {
	return true;
	}

	protected function expandCustomRemarkupBlockTransactions(
	PhabricatorLiskDAO $object,
	array $xactions,
	array $changes,
	PhutilMarkupEngine $engine) {

	// For "Fixes ..." and "Depends on ...", we're only going to look at
	// content blocks which are part of the revision itself (like "Summary"
	// and "Test Plan"), not comments.
	$content_parts = array();
	foreach ($changes as $change) {
	if ($change->getTransaction()->isCommentTransaction()) {
	continue;
	}
	$content_parts[] = $change->getNewValue();
	}
	if (!$content_parts) {
	return array();
	}
	$content_block = implode("\n\n", $content_parts);
	$task_map = array();
	$task_refs = id(new ManiphestCustomFieldStatusParser())
	->parseCorpus($content_block);
	foreach ($task_refs as $match) {
	foreach ($match['monograms'] as $monogram) {
	$task_id = (int)trim($monogram, 'tT');
	$task_map[$task_id] = true;
	}
	}

	$rev_map = array();
	$rev_refs = id(new DifferentialCustomFieldDependsOnParser())
	->parseCorpus($content_block);
	foreach ($rev_refs as $match) {
	foreach ($match['monograms'] as $monogram) {
	$rev_id = (int)trim($monogram, 'dD');
	$rev_map[$rev_id] = true;
	}
	}

	$edges = array();
	$task_phids = array();
	$rev_phids = array();

	if ($task_map) {
	$tasks = id(new ManiphestTaskQuery())
	->setViewer($this->getActor())
	->withIDs(array_keys($task_map))
	->execute();

	if ($tasks) {
	$task_phids = mpull($tasks, 'getPHID', 'getPHID');
	$edge_related = DifferentialRevisionHasTaskEdgeType::EDGECONST;
	$edges[$edge_related] = $task_phids;
	}
	}

	if ($rev_map) {
	$revs = id(new DifferentialRevisionQuery())
	->setViewer($this->getActor())
	->withIDs(array_keys($rev_map))
	->execute();
	$rev_phids = mpull($revs, 'getPHID', 'getPHID');

	// NOTE: Skip any write attempts if a user cleverly implies a revision
	// depends upon itself.
	unset($rev_phids[$object->getPHID()]);

	if ($revs) {
	$depends = DifferentialRevisionDependsOnRevisionEdgeType::EDGECONST;
	$edges[$depends] = $rev_phids;
	}
	}

	$revert_refs = id(new DifferentialCustomFieldRevertsParser())
	->parseCorpus($content_block);

	$revert_monograms = array();
	foreach ($revert_refs as $match) {
	foreach ($match['monograms'] as $monogram) {
	$revert_monograms[] = $monogram;
	}
	}

	if ($revert_monograms) {
	$revert_objects = id(new PhabricatorObjectQuery())
	->setViewer($this->getActor())
	->withNames($revert_monograms)
	->withTypes(
	array(
	DifferentialRevisionPHIDType::TYPECONST,
	PhabricatorRepositoryCommitPHIDType::TYPECONST,
	))
	->execute();

	$revert_phids = mpull($revert_objects, 'getPHID', 'getPHID');

	// Don't let an object revert itself, although other silly stuff like
	// cycles of objects reverting each other is not prevented.
	unset($revert_phids[$object->getPHID()]);

	$revert_type = DiffusionCommitRevertsCommitEdgeType::EDGECONST;
	$edges[$revert_type] = $revert_phids;
	} else {
	$revert_phids = array();
	}

	$this->setUnmentionablePHIDMap(
	array_merge(
	$task_phids,
	$rev_phids,
	$revert_phids));

	$result = array();
	foreach ($edges as $type => $specs) {
	$result[] = id(new DifferentialTransaction())
	->setTransactionType(PhabricatorTransactions::TYPE_EDGE)
	->setMetadataValue('edge:type', $type)
	->setNewValue(array('+' => $specs));
	}

	return $result;
	}

	private function appendInlineCommentsForMail(
	PhabricatorLiskDAO $object,
	array $inlines,
	PhabricatorMetaMTAMailBody $body) {

	$section = id(new DifferentialInlineCommentMailView())
	->setViewer($this->getActor())
	->setInlines($inlines)
	->buildMailSection();

	$header = pht('INLINE COMMENTS');

	$section_text = "\n".$section->getPlaintext();

	$style = array(
	'margin: 6px 0 12px 0;',
	);

	$section_html = phutil_tag(
	'div',
	array(
	'style' => implode(' ', $style),
	),
	$section->getHTML());

	$body->addPlaintextSection($header, $section_text, false);
	$body->addHTMLSection($header, $section_html);
	}

	private function appendChangeDetailsForMail(
	PhabricatorLiskDAO $object,
	DifferentialDiff $diff,
	$patch,
	PhabricatorMetaMTAMailBody $body) {

	$section = id(new DifferentialChangeDetailMailView())
	->setViewer($this->getActor())
	->setDiff($diff)
	->setPatch($patch)
	->buildMailSection();

	$header = pht('CHANGE DETAILS');

	$section_text = "\n".$section->getPlaintext();

	$style = array(
	'margin: 6px 0 12px 0;',
	);

	$section_html = phutil_tag(
	'div',
	array(
	'style' => implode(' ', $style),
	),
	$section->getHTML());

	$body->addPlaintextSection($header, $section_text, false);
	$body->addHTMLSection($header, $section_html);
	}

	private function loadDiff($phid, $need_changesets = false) {
	$query = id(new DifferentialDiffQuery())
	->withPHIDs(array($phid))
	->setViewer($this->getActor());

	if ($need_changesets) {
	$query->needChangesets(true);
	}

	return $query->executeOne();
	}

	private function requireDiff($phid, $need_changesets = false) {
	$diff = $this->loadDiff($phid, $need_changesets);
	if (!$diff) {
	throw new Exception(pht('Diff "%s" does not exist!', $phid));
	}

	return $diff;
	}

	/* -( Herald Integration )------------------------------------------------- */

	protected function shouldApplyHeraldRules(
	PhabricatorLiskDAO $object,
	array $xactions) {
	return true;
	}

	protected function didApplyHeraldRules(
	PhabricatorLiskDAO $object,
	HeraldAdapter $adapter,
	HeraldTranscript $transcript) {

	$repository = $object->getRepository();
	if (!$repository) {
	return array();
	}

	if (!$this->affectedPaths) {
	return array();
	}

	$packages = PhabricatorOwnersPackage::loadAffectedPackages(
	$repository,
	$this->affectedPaths);
	if (!$packages) {
	return array();
	}

	// Remove packages that the revision author is an owner of. If you own
	// code, you don't need another owner to review it.
	$authority = id(new PhabricatorOwnersPackageQuery())
	->setViewer(PhabricatorUser::getOmnipotentUser())
	->withPHIDs(mpull($packages, 'getPHID'))
	->withAuthorityPHIDs(array($object->getAuthorPHID()))
	->execute();
	$authority = mpull($authority, null, 'getPHID');

	foreach ($packages as $key => $package) {
	$package_phid = $package->getPHID();
	if (isset($authority[$package_phid])) {
	unset($packages[$key]);
	continue;
	}
	}

	if (!$packages) {
	return array();
	}

	$auto_subscribe = array();
	$auto_review = array();
	$auto_block = array();

	foreach ($packages as $package) {
	switch ($package->getAutoReview()) {
	case PhabricatorOwnersPackage::AUTOREVIEW_SUBSCRIBE:
	$auto_subscribe[] = $package;
	break;
	case PhabricatorOwnersPackage::AUTOREVIEW_REVIEW:
	$auto_review[] = $package;
	break;
	case PhabricatorOwnersPackage::AUTOREVIEW_BLOCK:
	$auto_block[] = $package;
	break;
	case PhabricatorOwnersPackage::AUTOREVIEW_NONE:
	default:
	break;
	}
	}

	$owners_phid = id(new PhabricatorOwnersApplication())
	->getPHID();

	$xactions = array();
	if ($auto_subscribe) {
	$xactions[] = $object->getApplicationTransactionTemplate()
	->setAuthorPHID($owners_phid)
	->setTransactionType(PhabricatorTransactions::TYPE_SUBSCRIBERS)
	->setNewValue(
	array(
	'+' => mpull($auto_subscribe, 'getPHID'),
	));
	}

	$specs = array(
	array($auto_review, false),
	array($auto_block, true),
	);

	foreach ($specs as $spec) {
	list($reviewers, $blocking) = $spec;
	if (!$reviewers) {
	continue;
	}

	$phids = mpull($reviewers, 'getPHID');
	$xaction = $this->newAutoReviewTransaction($object, $phids, $blocking);
	if ($xaction) {
	$xactions[] = $xaction;
	}
	}

	return $xactions;
	}

	private function newAutoReviewTransaction(
	PhabricatorLiskDAO $object,
	array $phids,
	$is_blocking) {

	// TODO: This is substantially similar to DifferentialReviewersHeraldAction
	// and both are needlessly complex. This logic should live in the normal
	// transaction application pipeline. See T10967.

	$reviewers = $object->getReviewers();
	$reviewers = mpull($reviewers, null, 'getReviewerPHID');

	if ($is_blocking) {
	$new_status = DifferentialReviewerStatus::STATUS_BLOCKING;
	} else {
	$new_status = DifferentialReviewerStatus::STATUS_ADDED;
	}

	$new_strength = DifferentialReviewerStatus::getStatusStrength(
	$new_status);

	$current = array();
	foreach ($phids as $phid) {
	if (!isset($reviewers[$phid])) {
	continue;
	}

	// If we're applying a stronger status (usually, upgrading a reviewer
	// into a blocking reviewer), skip this check so we apply the change.
	$old_strength = DifferentialReviewerStatus::getStatusStrength(
	$reviewers[$phid]->getReviewerStatus());
	if ($old_strength <= $new_strength) {
	continue;
	}

	$current[] = $phid;
	}

	$phids = array_diff($phids, $current);

	if (!$phids) {
	return null;
	}

	$phids = array_fuse($phids);

	$value = array();
	foreach ($phids as $phid) {
	if ($is_blocking) {
	$value[] = 'blocking('.$phid.')';
	} else {
	$value[] = $phid;
	}
	}

	$owners_phid = id(new PhabricatorOwnersApplication())
	->getPHID();

	$reviewers_type = DifferentialRevisionReviewersTransaction::TRANSACTIONTYPE;

	return $object->getApplicationTransactionTemplate()
	->setAuthorPHID($owners_phid)
	->setTransactionType($reviewers_type)
	->setNewValue(
	array(
	'+' => $value,
	));
	}

	protected function buildHeraldAdapter(
	PhabricatorLiskDAO $object,
	array $xactions) {

	$revision = id(new DifferentialRevisionQuery())
	->setViewer($this->getActor())
	->withPHIDs(array($object->getPHID()))
	->needActiveDiffs(true)
	->needReviewers(true)
	->executeOne();
	if (!$revision) {
	throw new Exception(
	pht('Failed to load revision for Herald adapter construction!'));
	}

	$adapter = HeraldDifferentialRevisionAdapter::newLegacyAdapter(
	$revision,
	$revision->getActiveDiff());

	// If the object is still a draft, prevent "Send me an email" and other
	// similar rules from acting yet.
	if (!$object->shouldBroadcast()) {
	$adapter->setForbiddenAction(
	HeraldMailableState::STATECONST,
	DifferentialHeraldStateReasons::REASON_DRAFT);
	}

	// If this edit didn't actually change the diff (for example, a user
	// edited the title or changed subscribers), prevent "Run build plan"
	// and other similar rules from acting yet, since the build results will
	// not (or, at least, should not) change unless the actual source changes.
	// We also don't run Differential builds if the update was caused by
	// discovering a commit, as the expectation is that Diffusion builds take
	// over once things land.
	$has_update = false;
	$has_commit = false;

	$type_update = DifferentialTransaction::TYPE_UPDATE;
	foreach ($xactions as $xaction) {
	if ($xaction->getTransactionType() != $type_update) {
	continue;
	}

	if ($xaction->getMetadataValue('isCommitUpdate')) {
	$has_commit = true;
	} else {
	$has_update = true;
	}

	break;
	}

	if ($has_commit) {
	$adapter->setForbiddenAction(
	HeraldBuildableState::STATECONST,
	DifferentialHeraldStateReasons::REASON_LANDED);
	} else if (!$has_update) {
	$adapter->setForbiddenAction(
	HeraldBuildableState::STATECONST,
	DifferentialHeraldStateReasons::REASON_UNCHANGED);
	}

	return $adapter;
	}

	/**
	* Update the table which links Differential revisions to paths they affect,
	* so Diffusion can efficiently find pending revisions for a given file.
	*/
	private function updateAffectedPathTable(
	DifferentialRevision $revision,
	DifferentialDiff $diff) {

	$repository = $revision->getRepository();
	if (!$repository) {
	// The repository where the code lives is untracked.
	return;
	}

	$path_prefix = null;

	$local_root = $diff->getSourceControlPath();
	if ($local_root) {
	// We're in a working copy which supports subdirectory checkouts (e.g.,
	// SVN) so we need to figure out what prefix we should add to each path
	// (e.g., trunk/projects/example/) to get the absolute path from the
	// root of the repository. DVCS systems like Git and Mercurial are not
	// affected.

	// Normalize both paths and check if the repository root is a prefix of
	// the local root. If so, throw it away. Note that this correctly handles
	// the case where the remote path is "/".
	$local_root = id(new PhutilURI($local_root))->getPath();
	$local_root = rtrim($local_root, '/');

	$repo_root = id(new PhutilURI($repository->getRemoteURI()))->getPath();
	$repo_root = rtrim($repo_root, '/');

	if (!strncmp($repo_root, $local_root, strlen($repo_root))) {
	$path_prefix = substr($local_root, strlen($repo_root));
	}
	}

	$changesets = $diff->getChangesets();
	$paths = array();
	foreach ($changesets as $changeset) {
	$paths[] = $path_prefix.'/'.$changeset->getFilename();
	}

	// Save the affected paths; we'll use them later to query Owners. This
	// uses the un-expanded paths.
	$this->affectedPaths = $paths;

	// Mark this as also touching all parent paths, so you can see all pending
	// changes to any file within a directory.
	$all_paths = array();
	foreach ($paths as $local) {
	foreach (DiffusionPathIDQuery::expandPathToRoot($local) as $path) {
	$all_paths[$path] = true;
	}
	}
	$all_paths = array_keys($all_paths);

	$path_ids =
	PhabricatorRepositoryCommitChangeParserWorker::lookupOrCreatePaths(
	$all_paths);

	$table = new DifferentialAffectedPath();
	$conn_w = $table->establishConnection('w');

	$sql = array();
	foreach ($path_ids as $path_id) {
	$sql[] = qsprintf(
	$conn_w,
	'(%d, %d, %d, %d)',
	$repository->getID(),
	$path_id,
	time(),
	$revision->getID());
	}

	queryfx(
	$conn_w,
	'DELETE FROM %T WHERE revisionID = %d',
	$table->getTableName(),
	$revision->getID());
	foreach (array_chunk($sql, 256) as $chunk) {
	queryfx(
	$conn_w,
	'INSERT INTO %T (repositoryID, pathID, epoch, revisionID) VALUES %Q',
	$table->getTableName(),
	implode(', ', $chunk));
	}
	}

	/**
	* Update the table connecting revisions to DVCS local hashes, so we can
	* identify revisions by commit/tree hashes.
	*/
	private function updateRevisionHashTable(
	DifferentialRevision $revision,
	DifferentialDiff $diff) {

	$vcs = $diff->getSourceControlSystem();
	if ($vcs == DifferentialRevisionControlSystem::SVN) {
	// Subversion has no local commit or tree hash information, so we don't
	// have to do anything.
	return;
	}

	$property = id(new DifferentialDiffProperty())->loadOneWhere(
	'diffID = %d AND name = %s',
	$diff->getID(),
	'local:commits');
	if (!$property) {
	return;
	}

	$hashes = array();

	$data = $property->getData();
	switch ($vcs) {
	case DifferentialRevisionControlSystem::GIT:
	foreach ($data as $commit) {
	$hashes[] = array(
	ArcanistDifferentialRevisionHash::HASH_GIT_COMMIT,
	$commit['commit'],
	);
	$hashes[] = array(
	ArcanistDifferentialRevisionHash::HASH_GIT_TREE,
	$commit['tree'],
	);
	}
	break;
	case DifferentialRevisionControlSystem::MERCURIAL:
	foreach ($data as $commit) {
	$hashes[] = array(
	ArcanistDifferentialRevisionHash::HASH_MERCURIAL_COMMIT,
	$commit['rev'],
	);
	}
	break;
	}

	$conn_w = $revision->establishConnection('w');

	$sql = array();
	foreach ($hashes as $info) {
	list($type, $hash) = $info;
	$sql[] = qsprintf(
	$conn_w,
	'(%d, %s, %s)',
	$revision->getID(),
	$type,
	$hash);
	}

	queryfx(
	$conn_w,
	'DELETE FROM %T WHERE revisionID = %d',
	ArcanistDifferentialRevisionHash::TABLE_NAME,
	$revision->getID());

	if ($sql) {
	queryfx(
	$conn_w,
	'INSERT INTO %T (revisionID, type, hash) VALUES %Q',
	ArcanistDifferentialRevisionHash::TABLE_NAME,
	implode(', ', $sql));
	}
	}

	private function renderAffectedFilesForMail(DifferentialDiff $diff) {
	$changesets = $diff->getChangesets();

	$filenames = mpull($changesets, 'getDisplayFilename');
	sort($filenames);

	$count = count($filenames);
	$max = 250;
	if ($count > $max) {
	$filenames = array_slice($filenames, 0, $max);
	$filenames[] = pht('(%d more files...)', ($count - $max));
	}

	return implode("\n", $filenames);
	}

	private function renderPatchHTMLForMail($patch) {
	return phutil_tag('pre',
	array('style' => 'font-family: monospace;'), $patch);
	}

	private function buildPatchForMail(DifferentialDiff $diff) {
	$format = PhabricatorEnv::getEnvConfig('metamta.differential.patch-format');

	return id(new DifferentialRawDiffRenderer())
	->setViewer($this->getActor())
	->setFormat($format)
	->setChangesets($diff->getChangesets())
	->buildPatch();
	}

	protected function willPublish(PhabricatorLiskDAO $object, array $xactions) {
	// Reload to pick up the active diff and reviewer status.
	return id(new DifferentialRevisionQuery())
	->setViewer($this->getActor())
	->needReviewers(true)
	->needActiveDiffs(true)
	->withIDs(array($object->getID()))
	->executeOne();
	}

	protected function getCustomWorkerState() {
	return array(
	'changedPriorToCommitURI' => $this->changedPriorToCommitURI,
	'firstBroadcast' => $this->firstBroadcast,
	);
	}

	protected function loadCustomWorkerState(array $state) {
	$this->changedPriorToCommitURI = idx($state, 'changedPriorToCommitURI');
	$this->firstBroadcast = idx($state, 'firstBroadcast');
	return $this;
	}

	private function newCommandeerReviewerTransaction(
	DifferentialRevision $revision) {

	$actor_phid = $this->getActingAsPHID();
	$owner_phid = $revision->getAuthorPHID();

	// If the user is commandeering, add the previous owner as a
	// reviewer and remove the actor.

	$edits = array(
	'-' => array(
	$actor_phid,
	),
	'+' => array(
	$owner_phid,
	),
	);

	// NOTE: We're setting setIsCommandeerSideEffect() on this because normally
	// you can't add a revision's author as a reviewer, but this action swaps
	// them after validation executes.

	$xaction_type = DifferentialRevisionReviewersTransaction::TRANSACTIONTYPE;

	return id(new DifferentialTransaction())
	->setTransactionType($xaction_type)
	->setIgnoreOnNoEffect(true)
	->setIsCommandeerSideEffect(true)
	->setNewValue($edits);
	}

	public function getActiveDiff($object) {
	if ($this->getIsNewObject()) {
	return null;
	} else {
	return $object->getActiveDiff();
	}
	}

	/**
	* When a reviewer makes a comment, mark the last revision they commented
	* on.
	*
	* This allows us to show a hint to help authors and other reviewers quickly
	* distinguish between reviewers who have participated in the discussion and
	* reviewers who haven't been part of it.
	*/
	private function markReviewerComments($object, array $xactions) {
	$acting_phid = $this->getActingAsPHID();
	if (!$acting_phid) {
	return;
	}

	$diff = $this->getActiveDiff($object);
	if (!$diff) {
	return;
	}

	$has_comment = false;
	foreach ($xactions as $xaction) {
	if ($xaction->hasComment()) {
	$has_comment = true;
	break;
	}
	}

	if (!$has_comment) {
	return;
	}

	$reviewer_table = new DifferentialReviewer();
	$conn = $reviewer_table->establishConnection('w');

	queryfx(
	$conn,
	'UPDATE %T SET lastCommentDiffPHID = %s
	WHERE revisionPHID = %s
	AND reviewerPHID = %s',
	$reviewer_table->getTableName(),
	$diff->getPHID(),
	$object->getPHID(),
	$acting_phid);
	}

	private function loadUnbroadcastTransactions($object) {
	$viewer = $this->requireActor();

	$xactions = id(new DifferentialTransactionQuery())
	->setViewer($viewer)
	->withObjectPHIDs(array($object->getPHID()))
	->execute();

	return array_reverse($xactions);
	}


	protected function didApplyTransactions($object, array $xactions) {
	// In a moment, we're going to try to publish draft revisions which have
	// completed all their builds. However, we only want to do that if the
	// actor is either the revision author or an omnipotent user (generally,
	// the Harbormaster application).

	// If we let any actor publish the revision as a side effect of other
	// changes then an unlucky third party who innocently comments on the draft
	// can end up racing Harbormaster and promoting the revision. At best, this
	// is confusing. It can also run into validation problems with the "Request
	// Review" transaction. See PHI309 for some discussion.
	$author_phid = $object->getAuthorPHID();
	$viewer = $this->requireActor();
	$can_undraft =
	($this->getActingAsPHID() === $author_phid) \|\|
	($viewer->isOmnipotent());

	// If a draft revision has no outstanding builds and we're automatically
	// making drafts public after builds finish, make the revision public.
	if ($can_undraft) {
	$auto_undraft = !$object->getHoldAsDraft();
	} else {
	$auto_undraft = false;
	}

	if ($object->isDraft() && $auto_undraft) {
	$active_builds = $this->hasActiveBuilds($object);
	if (!$active_builds) {
	// When Harbormaster moves a revision out of the draft state, we
	// attribute the action to the revision author since this is more
	// natural and more useful.

	// Additionally, we change the acting PHID for the transaction set
	// to the author if it isn't already a user so that mail comes from
	// the natural author.
	$acting_phid = $this->getActingAsPHID();
	$user_type = PhabricatorPeopleUserPHIDType::TYPECONST;
	if (phid_get_type($acting_phid) != $user_type) {
	$this->setActingAsPHID($author_phid);
	}

	$xaction = $object->getApplicationTransactionTemplate()
	->setAuthorPHID($author_phid)
	->setTransactionType(
	DifferentialRevisionRequestReviewTransaction::TRANSACTIONTYPE)
	->setNewValue(true);

	// If we're creating this revision and immediately moving it out of
	// the draft state, mark this as a create transaction so it gets
	// hidden in the timeline and mail, since it isn't interesting: it
	// is as though the draft phase never happened.
	if ($this->getIsNewObject()) {
	$xaction->setIsCreateTransaction(true);
	}

	// Queue this transaction and apply it separately after the current
	// batch of transactions finishes so that Herald can fire on the new
	// revision state. See T13027 for discussion.
	$this->queueTransaction($xaction);
	}
	}

	// If the revision is new or was a draft, and is no longer a draft, we
	// might be sending the first email about it.

	// This might mean it was created directly into a non-draft state, or
	// it just automatically undrafted after builds finished, or a user
	// explicitly promoted it out of the draft state with an action like
	// "Request Review".

	// If we haven't sent any email about it yet, mark this email as the first
	// email so the mail gets enriched with "SUMMARY" and "TEST PLAN".

	$is_new = $this->getIsNewObject();
	$was_draft = $this->wasDraft;

	if (!$object->isDraft() && ($was_draft \|\| $is_new)) {
	if (!$object->getHasBroadcast()) {
	// Mark this as the first broadcast we're sending about the revision
	// so mail can generate specially.
	$this->firstBroadcast = true;

	$object
	->setHasBroadcast(true)
	->save();
	}
	}

	return $xactions;
	}

	private function hasActiveBuilds($object) {
	$viewer = $this->requireActor();

	$builds = $object->loadActiveBuilds($viewer);
	if (!$builds) {
	return false;
	}

	return true;
	}

	private function updateRevisionLineCounts(
	DifferentialRevision $revision,
	DifferentialDiff $diff) {

	$revision->setLineCount($diff->getLineCount());

	$conn = $revision->establishConnection('r');

	$row = queryfx_one(
	$conn,
	'SELECT SUM(addLines) A, SUM(delLines) D FROM %T
	WHERE diffID = %d',
	id(new DifferentialChangeset())->getTableName(),
	$diff->getID());

	if ($row) {
	$revision->setAddedLineCount((int)$row['A']);
	$revision->setRemovedLineCount((int)$row['D']);
	}
	}

	private function requireReviewers(DifferentialRevision $revision) {
	if ($revision->hasAttachedReviewers()) {
	return;
	}

	$with_reviewers = id(new DifferentialRevisionQuery())
	->setViewer($this->getActor())
	->needReviewers(true)
	->withPHIDs(array($revision->getPHID()))
	->executeOne();
	if (!$with_reviewers) {
	throw new Exception(
	pht(
	'Failed to reload revision ("%s").',
	$revision->getPHID()));
	}

	$revision->attachReviewers($with_reviewers->getReviewers());
	}


	}
	diff --git a/src/applications/differential/storage/DifferentialRevision.php b/src/applications/differential/storage/DifferentialRevision.php
	index e8fdf7e514..6813c124d7 100644
	--- a/src/applications/differential/storage/DifferentialRevision.php
	+++ b/src/applications/differential/storage/DifferentialRevision.php
	@@ -1,1065 +1,1066 @@
	<?php

	final class DifferentialRevision extends DifferentialDAO
	implements
	PhabricatorTokenReceiverInterface,
	PhabricatorPolicyInterface,
	PhabricatorExtendedPolicyInterface,
	PhabricatorFlaggableInterface,
	PhrequentTrackableInterface,
	HarbormasterBuildableInterface,
	PhabricatorSubscribableInterface,
	PhabricatorCustomFieldInterface,
	PhabricatorApplicationTransactionInterface,
	PhabricatorMentionableInterface,
	PhabricatorDestructibleInterface,
	PhabricatorProjectInterface,
	PhabricatorFulltextInterface,
	PhabricatorFerretInterface,
	PhabricatorConduitResultInterface,
	PhabricatorDraftInterface {

	protected $title = '';
	protected $status;

	protected $summary = '';
	protected $testPlan = '';

	protected $authorPHID;
	protected $lastReviewerPHID;

	protected $lineCount = 0;
	protected $attached = array();

	protected $mailKey;
	protected $branchName;
	protected $repositoryPHID;
	protected $activeDiffPHID;

	protected $viewPolicy = PhabricatorPolicies::POLICY_USER;
	protected $editPolicy = PhabricatorPolicies::POLICY_USER;
	protected $properties = array();

	private $commits = self::ATTACHABLE;
	private $activeDiff = self::ATTACHABLE;
	private $diffIDs = self::ATTACHABLE;
	private $hashes = self::ATTACHABLE;
	private $repository = self::ATTACHABLE;

	private $reviewerStatus = self::ATTACHABLE;
	private $customFields = self::ATTACHABLE;
	private $drafts = array();
	private $flags = array();
	private $forceMap = array();

	const TABLE_COMMIT = 'differential_commit';

	const RELATION_REVIEWER = 'revw';
	const RELATION_SUBSCRIBED = 'subd';

	const PROPERTY_CLOSED_FROM_ACCEPTED = 'wasAcceptedBeforeClose';
	const PROPERTY_DRAFT_HOLD = 'draft.hold';
	const PROPERTY_HAS_BROADCAST = 'draft.broadcast';
	const PROPERTY_LINES_ADDED = 'lines.added';
	const PROPERTY_LINES_REMOVED = 'lines.removed';

	public static function initializeNewRevision(PhabricatorUser $actor) {
	$app = id(new PhabricatorApplicationQuery())
	->setViewer($actor)
	->withClasses(array('PhabricatorDifferentialApplication'))
	->executeOne();

	$view_policy = $app->getPolicy(
	DifferentialDefaultViewCapability::CAPABILITY);

	if (PhabricatorEnv::getEnvConfig('phabricator.show-prototypes')) {
	$initial_state = DifferentialRevisionStatus::DRAFT;
	} else {
	$initial_state = DifferentialRevisionStatus::NEEDS_REVIEW;
	}

	return id(new DifferentialRevision())
	->setViewPolicy($view_policy)
	->setAuthorPHID($actor->getPHID())
	->attachRepository(null)
	->attachActiveDiff(null)
	->attachReviewers(array())
	->setModernRevisionStatus($initial_state);
	}

	protected function getConfiguration() {
	return array(
	self::CONFIG_AUX_PHID => true,
	self::CONFIG_SERIALIZATION => array(
	'attached' => self::SERIALIZATION_JSON,
	'unsubscribed' => self::SERIALIZATION_JSON,
	'properties' => self::SERIALIZATION_JSON,
	),
	self::CONFIG_COLUMN_SCHEMA => array(
	'title' => 'text255',
	'status' => 'text32',
	'summary' => 'text',
	'testPlan' => 'text',
	'authorPHID' => 'phid?',
	'lastReviewerPHID' => 'phid?',
	'lineCount' => 'uint32?',
	'mailKey' => 'bytes40',
	'branchName' => 'text255?',
	'repositoryPHID' => 'phid?',
	),
	self::CONFIG_KEY_SCHEMA => array(
	'key_phid' => null,
	'phid' => array(
	'columns' => array('phid'),
	'unique' => true,
	),
	'authorPHID' => array(
	'columns' => array('authorPHID', 'status'),
	),
	'repositoryPHID' => array(
	'columns' => array('repositoryPHID'),
	),
	// If you (or a project you are a member of) is reviewing a significant
	// fraction of the revisions on an install, the result set of open
	// revisions may be smaller than the result set of revisions where you
	// are a reviewer. In these cases, this key is better than keys on the
	// edge table.
	'key_status' => array(
	'columns' => array('status', 'phid'),
	),
	),
	) + parent::getConfiguration();
	}

	public function setProperty($key, $value) {
	$this->properties[$key] = $value;
	return $this;
	}

	public function getProperty($key, $default = null) {
	return idx($this->properties, $key, $default);
	}

	public function hasRevisionProperty($key) {
	return array_key_exists($key, $this->properties);
	}

	public function getMonogram() {
	$id = $this->getID();
	return "D{$id}";
	}

	public function getURI() {
	return '/'.$this->getMonogram();
	}

	public function loadIDsByCommitPHIDs($phids) {
	if (!$phids) {
	return array();
	}
	$revision_ids = queryfx_all(
	$this->establishConnection('r'),
	'SELECT * FROM %T WHERE commitPHID IN (%Ls)',
	self::TABLE_COMMIT,
	$phids);
	return ipull($revision_ids, 'revisionID', 'commitPHID');
	}

	public function loadCommitPHIDs() {
	if (!$this->getID()) {
	return ($this->commits = array());
	}

	$commits = queryfx_all(
	$this->establishConnection('r'),
	'SELECT commitPHID FROM %T WHERE revisionID = %d',
	self::TABLE_COMMIT,
	$this->getID());
	$commits = ipull($commits, 'commitPHID');

	return ($this->commits = $commits);
	}

	public function getCommitPHIDs() {
	return $this->assertAttached($this->commits);
	}

	public function getActiveDiff() {
	// TODO: Because it's currently technically possible to create a revision
	// without an associated diff, we allow an attached-but-null active diff.
	// It would be good to get rid of this once we make diff-attaching
	// transactional.

	return $this->assertAttached($this->activeDiff);
	}

	public function attachActiveDiff($diff) {
	$this->activeDiff = $diff;
	return $this;
	}

	public function getDiffIDs() {
	return $this->assertAttached($this->diffIDs);
	}

	public function attachDiffIDs(array $ids) {
	rsort($ids);
	$this->diffIDs = array_values($ids);
	return $this;
	}

	public function attachCommitPHIDs(array $phids) {
	$this->commits = array_values($phids);
	return $this;
	}

	public function getAttachedPHIDs($type) {
	return array_keys(idx($this->attached, $type, array()));
	}

	public function setAttachedPHIDs($type, array $phids) {
	$this->attached[$type] = array_fill_keys($phids, array());
	return $this;
	}

	public function generatePHID() {
	return PhabricatorPHID::generateNewPHID(
	DifferentialRevisionPHIDType::TYPECONST);
	}

	public function loadActiveDiff() {
	return id(new DifferentialDiff())->loadOneWhere(
	'revisionID = %d ORDER BY id DESC LIMIT 1',
	$this->getID());
	}

	public function save() {
	if (!$this->getMailKey()) {
	$this->mailKey = Filesystem::readRandomCharacters(40);
	}
	return parent::save();
	}

	public function getHashes() {
	return $this->assertAttached($this->hashes);
	}

	public function attachHashes(array $hashes) {
	$this->hashes = $hashes;
	return $this;
	}

	public function canReviewerForceAccept(
	PhabricatorUser $viewer,
	DifferentialReviewer $reviewer) {

	if (!$reviewer->isPackage()) {
	return false;
	}

	$map = $this->getReviewerForceAcceptMap($viewer);
	if (!$map) {
	return false;
	}

	if (isset($map[$reviewer->getReviewerPHID()])) {
	return true;
	}

	return false;
	}

	private function getReviewerForceAcceptMap(PhabricatorUser $viewer) {
	$fragment = $viewer->getCacheFragment();

	if (!array_key_exists($fragment, $this->forceMap)) {
	$map = $this->newReviewerForceAcceptMap($viewer);
	$this->forceMap[$fragment] = $map;
	}

	return $this->forceMap[$fragment];
	}

	private function newReviewerForceAcceptMap(PhabricatorUser $viewer) {
	$diff = $this->getActiveDiff();
	if (!$diff) {
	return null;
	}

	$repository_phid = $diff->getRepositoryPHID();
	if (!$repository_phid) {
	return null;
	}

	$paths = array();

	try {
	$changesets = $diff->getChangesets();
	} catch (Exception $ex) {
	$changesets = id(new DifferentialChangesetQuery())
	->setViewer($viewer)
	->withDiffs(array($diff))
	->execute();
	}

	foreach ($changesets as $changeset) {
	$paths[] = $changeset->getOwnersFilename();
	}

	if (!$paths) {
	return null;
	}

	$reviewer_phids = array();
	foreach ($this->getReviewers() as $reviewer) {
	if (!$reviewer->isPackage()) {
	continue;
	}

	$reviewer_phids[] = $reviewer->getReviewerPHID();
	}

	if (!$reviewer_phids) {
	return null;
	}

	// Load all the reviewing packages which have control over some of the
	// paths in the change. These are packages which the actor may be able
	// to force-accept on behalf of.
	$control_query = id(new PhabricatorOwnersPackageQuery())
	->setViewer($viewer)
	->withStatuses(array(PhabricatorOwnersPackage::STATUS_ACTIVE))
	->withPHIDs($reviewer_phids)
	->withControl($repository_phid, $paths);
	$control_packages = $control_query->execute();
	if (!$control_packages) {
	return null;
	}

	// Load all the packages which have potential control over some of the
	// paths in the change and are owned by the actor. These are packages
	// which the actor may be able to use their authority over to gain the
	// ability to force-accept for other packages. This query doesn't apply
	// dominion rules yet, and we'll bypass those rules later on.
	$authority_query = id(new PhabricatorOwnersPackageQuery())
	->setViewer($viewer)
	->withStatuses(array(PhabricatorOwnersPackage::STATUS_ACTIVE))
	->withAuthorityPHIDs(array($viewer->getPHID()))
	->withControl($repository_phid, $paths);
	$authority_packages = $authority_query->execute();
	if (!$authority_packages) {
	return null;
	}
	$authority_packages = mpull($authority_packages, null, 'getPHID');

	// Build a map from each path in the revision to the reviewer packages
	// which control it.
	$control_map = array();
	foreach ($paths as $path) {
	$control_packages = $control_query->getControllingPackagesForPath(
	$repository_phid,
	$path);

	// Remove packages which the viewer has authority over. We don't need
	// to check these for force-accept because they can just accept them
	// normally.
	$control_packages = mpull($control_packages, null, 'getPHID');
	foreach ($control_packages as $phid => $control_package) {
	if (isset($authority_packages[$phid])) {
	unset($control_packages[$phid]);
	}
	}

	if (!$control_packages) {
	continue;
	}

	$control_map[$path] = $control_packages;
	}

	if (!$control_map) {
	return null;
	}

	// From here on out, we only care about paths which we have at least one
	// controlling package for.
	$paths = array_keys($control_map);

	// Now, build a map from each path to the packages which would control it
	// if there were no dominion rules.
	$authority_map = array();
	foreach ($paths as $path) {
	$authority_packages = $authority_query->getControllingPackagesForPath(
	$repository_phid,
	$path,
	$ignore_dominion = true);

	$authority_map[$path] = mpull($authority_packages, null, 'getPHID');
	}

	// For each path, find the most general package that the viewer has
	// authority over. For example, we'll prefer a package that owns "/" to a
	// package that owns "/src/".
	$force_map = array();
	foreach ($authority_map as $path => $package_map) {
	$path_fragments = PhabricatorOwnersPackage::splitPath($path);
	$fragment_count = count($path_fragments);

	// Find the package that we have authority over which has the most
	// general match for this path.
	$best_match = null;
	$best_package = null;
	foreach ($package_map as $package_phid => $package) {
	$package_paths = $package->getPathsForRepository($repository_phid);
	foreach ($package_paths as $package_path) {

	// NOTE: A strength of 0 means "no match". A strength of 1 means
	// that we matched "/", so we can not possibly find another stronger
	// match.

	$strength = $package_path->getPathMatchStrength(
	$path_fragments,
	$fragment_count);
	if (!$strength) {
	continue;
	}

	if ($strength < $best_match \|\| !$best_package) {
	$best_match = $strength;
	$best_package = $package;
	if ($strength == 1) {
	break 2;
	}
	}
	}
	}

	if ($best_package) {
	$force_map[$path] = array(
	'strength' => $best_match,
	'package' => $best_package,
	);
	}
	}

	// For each path which the viewer owns a package for, find other packages
	// which that authority can be used to force-accept. Once we find a way to
	// force-accept a package, we don't need to keep looking.
	$has_control = array();
	foreach ($force_map as $path => $spec) {
	$path_fragments = PhabricatorOwnersPackage::splitPath($path);
	$fragment_count = count($path_fragments);

	$authority_strength = $spec['strength'];

	$control_packages = $control_map[$path];
	foreach ($control_packages as $control_phid => $control_package) {
	if (isset($has_control[$control_phid])) {
	continue;
	}

	$control_paths = $control_package->getPathsForRepository(
	$repository_phid);
	foreach ($control_paths as $control_path) {
	$strength = $control_path->getPathMatchStrength(
	$path_fragments,
	$fragment_count);

	if (!$strength) {
	continue;
	}

	if ($strength > $authority_strength) {
	$authority = $spec['package'];
	$has_control[$control_phid] = array(
	'authority' => $authority,
	'phid' => $authority->getPHID(),
	);
	break;
	}
	}
	}
	}

	// Return a map from packages which may be force accepted to the packages
	// which permit that forced acceptance.
	return ipull($has_control, 'phid');
	}


	/* -( PhabricatorPolicyInterface )----------------------------------------- */


	public function getCapabilities() {
	return array(
	PhabricatorPolicyCapability::CAN_VIEW,
	PhabricatorPolicyCapability::CAN_EDIT,
	);
	}

	public function getPolicy($capability) {
	switch ($capability) {
	case PhabricatorPolicyCapability::CAN_VIEW:
	return $this->getViewPolicy();
	case PhabricatorPolicyCapability::CAN_EDIT:
	return $this->getEditPolicy();
	}
	}

	public function hasAutomaticCapability($capability, PhabricatorUser $user) {
	// A revision's author (which effectively means "owner" after we added
	// commandeering) can always view and edit it.
	$author_phid = $this->getAuthorPHID();
	if ($author_phid) {
	if ($user->getPHID() == $author_phid) {
	return true;
	}
	}

	return false;
	}

	public function describeAutomaticCapability($capability) {
	$description = array(
	pht('The owner of a revision can always view and edit it.'),
	);

	switch ($capability) {
	case PhabricatorPolicyCapability::CAN_VIEW:
	$description[] = pht(
	'If a revision belongs to a repository, other users must be able '.
	'to view the repository in order to view the revision.');
	break;
	}

	return $description;
	}


	/* -( PhabricatorExtendedPolicyInterface )--------------------------------- */


	public function getExtendedPolicy($capability, PhabricatorUser $viewer) {
	$extended = array();

	switch ($capability) {
	case PhabricatorPolicyCapability::CAN_VIEW:
	$repository_phid = $this->getRepositoryPHID();
	$repository = $this->getRepository();

	// Try to use the object if we have it, since it will save us some
	// data fetching later on. In some cases, we might not have it.
	$repository_ref = nonempty($repository, $repository_phid);
	if ($repository_ref) {
	$extended[] = array(
	$repository_ref,
	PhabricatorPolicyCapability::CAN_VIEW,
	);
	}
	break;
	}

	return $extended;
	}


	/* -( PhabricatorTokenReceiverInterface )---------------------------------- */


	public function getUsersToNotifyOfTokenGiven() {
	return array(
	$this->getAuthorPHID(),
	);
	}

	public function getReviewers() {
	return $this->assertAttached($this->reviewerStatus);
	}

	public function attachReviewers(array $reviewers) {
	assert_instances_of($reviewers, 'DifferentialReviewer');
	$reviewers = mpull($reviewers, null, 'getReviewerPHID');
	$this->reviewerStatus = $reviewers;
	return $this;
	}

	public function hasAttachedReviewers() {
	return ($this->reviewerStatus !== self::ATTACHABLE);
	}

	public function getReviewerPHIDs() {
	$reviewers = $this->getReviewers();
	return mpull($reviewers, 'getReviewerPHID');
	}

	public function getReviewerPHIDsForEdit() {
	$reviewers = $this->getReviewers();

	$status_blocking = DifferentialReviewerStatus::STATUS_BLOCKING;

	$value = array();
	foreach ($reviewers as $reviewer) {
	$phid = $reviewer->getReviewerPHID();
	if ($reviewer->getReviewerStatus() == $status_blocking) {
	$value[] = 'blocking('.$phid.')';
	} else {
	$value[] = $phid;
	}
	}

	return $value;
	}

	public function getRepository() {
	return $this->assertAttached($this->repository);
	}

	public function attachRepository(PhabricatorRepository $repository = null) {
	$this->repository = $repository;
	return $this;
	}

	public function setModernRevisionStatus($status) {
	return $this->setStatus($status);
	}

	public function getModernRevisionStatus() {
	return $this->getStatus();
	}

	public function getLegacyRevisionStatus() {
	return $this->getStatusObject()->getLegacyKey();
	}

	public function isClosed() {
	return $this->getStatusObject()->isClosedStatus();
	}

	public function isAbandoned() {
	return $this->getStatusObject()->isAbandoned();
	}

	public function isAccepted() {
	return $this->getStatusObject()->isAccepted();
	}

	public function isNeedsReview() {
	return $this->getStatusObject()->isNeedsReview();
	}

	public function isNeedsRevision() {
	return $this->getStatusObject()->isNeedsRevision();
	}

	public function isChangePlanned() {
	return $this->getStatusObject()->isChangePlanned();
	}

	public function isPublished() {
	return $this->getStatusObject()->isPublished();
	}

	public function isDraft() {
	return $this->getStatusObject()->isDraft();
	}

	public function getStatusIcon() {
	return $this->getStatusObject()->getIcon();
	}

	public function getStatusDisplayName() {
	return $this->getStatusObject()->getDisplayName();
	}

	public function getStatusIconColor() {
	return $this->getStatusObject()->getIconColor();
	}

	public function getStatusObject() {
	$status = $this->getStatus();
	return DifferentialRevisionStatus::newForStatus($status);
	}

	public function getFlag(PhabricatorUser $viewer) {
	return $this->assertAttachedKey($this->flags, $viewer->getPHID());
	}

	public function attachFlag(
	PhabricatorUser $viewer,
	PhabricatorFlag $flag = null) {
	$this->flags[$viewer->getPHID()] = $flag;
	return $this;
	}

	public function getHasDraft(PhabricatorUser $viewer) {
	return $this->assertAttachedKey($this->drafts, $viewer->getCacheFragment());
	}

	public function attachHasDraft(PhabricatorUser $viewer, $has_draft) {
	$this->drafts[$viewer->getCacheFragment()] = $has_draft;
	return $this;
	}

	public function shouldBroadcast() {
	if (!$this->isDraft()) {
	return true;
	}

	return false;
	}

	public function getHoldAsDraft() {
	return $this->getProperty(self::PROPERTY_DRAFT_HOLD, false);
	}

	public function setHoldAsDraft($hold) {
	return $this->setProperty(self::PROPERTY_DRAFT_HOLD, $hold);
	}

	public function getHasBroadcast() {
	return $this->getProperty(self::PROPERTY_HAS_BROADCAST, false);
	}

	public function setHasBroadcast($has_broadcast) {
	return $this->setProperty(self::PROPERTY_HAS_BROADCAST, $has_broadcast);
	}

	public function setAddedLineCount($count) {
	return $this->setProperty(self::PROPERTY_LINES_ADDED, $count);
	}

	public function getAddedLineCount() {
	return $this->getProperty(self::PROPERTY_LINES_ADDED);
	}

	public function setRemovedLineCount($count) {
	return $this->setProperty(self::PROPERTY_LINES_REMOVED, $count);
	}

	public function getRemovedLineCount() {
	return $this->getProperty(self::PROPERTY_LINES_REMOVED);
	}

	public function loadActiveBuilds(PhabricatorUser $viewer) {
	$diff = $this->getActiveDiff();

	+ // NOTE: We can't use `withContainerPHIDs()` here because the container
	+ // update in Harbormaster is not synchronous.
	$buildables = id(new HarbormasterBuildableQuery())
	->setViewer($viewer)
	- ->withContainerPHIDs(array($this->getPHID()))
	->withBuildablePHIDs(array($diff->getPHID()))
	->withManualBuildables(false)
	->execute();
	if (!$buildables) {
	return array();
	}

	return id(new HarbormasterBuildQuery())
	->setViewer($viewer)
	->withBuildablePHIDs(mpull($buildables, 'getPHID'))
	->withAutobuilds(false)
	->withBuildStatuses(
	array(
	HarbormasterBuildStatus::STATUS_INACTIVE,
	HarbormasterBuildStatus::STATUS_PENDING,
	HarbormasterBuildStatus::STATUS_BUILDING,
	HarbormasterBuildStatus::STATUS_FAILED,
	HarbormasterBuildStatus::STATUS_ABORTED,
	HarbormasterBuildStatus::STATUS_ERROR,
	HarbormasterBuildStatus::STATUS_PAUSED,
	HarbormasterBuildStatus::STATUS_DEADLOCKED,
	))
	->execute();
	}


	/* -( HarbormasterBuildableInterface )------------------------------------- */


	public function getHarbormasterBuildableDisplayPHID() {
	return $this->getHarbormasterContainerPHID();
	}

	public function getHarbormasterBuildablePHID() {
	return $this->loadActiveDiff()->getPHID();
	}

	public function getHarbormasterContainerPHID() {
	return $this->getPHID();
	}

	public function getHarbormasterPublishablePHID() {
	return $this->getPHID();
	}

	public function getBuildVariables() {
	return array();
	}

	public function getAvailableBuildVariables() {
	return array();
	}


	/* -( PhabricatorSubscribableInterface )----------------------------------- */


	public function isAutomaticallySubscribed($phid) {
	if ($phid == $this->getAuthorPHID()) {
	return true;
	}

	// TODO: This only happens when adding or removing CCs, and is safe from a
	// policy perspective, but the subscription pathway should have some
	// opportunity to load this data properly. For now, this is the only case
	// where implicit subscription is not an intrinsic property of the object.
	if ($this->reviewerStatus == self::ATTACHABLE) {
	$reviewers = id(new DifferentialRevisionQuery())
	->setViewer(PhabricatorUser::getOmnipotentUser())
	->withPHIDs(array($this->getPHID()))
	->needReviewers(true)
	->executeOne()
	->getReviewers();
	} else {
	$reviewers = $this->getReviewers();
	}

	foreach ($reviewers as $reviewer) {
	if ($reviewer->getReviewerPHID() !== $phid) {
	continue;
	}

	if ($reviewer->isResigned()) {
	continue;
	}

	return true;
	}

	return false;
	}


	/* -( PhabricatorCustomFieldInterface )------------------------------------ */


	public function getCustomFieldSpecificationForRole($role) {
	return PhabricatorEnv::getEnvConfig('differential.fields');
	}

	public function getCustomFieldBaseClass() {
	return 'DifferentialCustomField';
	}

	public function getCustomFields() {
	return $this->assertAttached($this->customFields);
	}

	public function attachCustomFields(PhabricatorCustomFieldAttachment $fields) {
	$this->customFields = $fields;
	return $this;
	}


	/* -( PhabricatorApplicationTransactionInterface )------------------------- */


	public function getApplicationTransactionEditor() {
	return new DifferentialTransactionEditor();
	}

	public function getApplicationTransactionObject() {
	return $this;
	}

	public function getApplicationTransactionTemplate() {
	return new DifferentialTransaction();
	}

	public function willRenderTimeline(
	PhabricatorApplicationTransactionView $timeline,
	AphrontRequest $request) {
	$viewer = $request->getViewer();

	$render_data = $timeline->getRenderData();
	$left = $request->getInt('left', idx($render_data, 'left'));
	$right = $request->getInt('right', idx($render_data, 'right'));

	$diffs = id(new DifferentialDiffQuery())
	->setViewer($request->getUser())
	->withIDs(array($left, $right))
	->execute();
	$diffs = mpull($diffs, null, 'getID');
	$left_diff = $diffs[$left];
	$right_diff = $diffs[$right];

	$old_ids = $request->getStr('old', idx($render_data, 'old'));
	$new_ids = $request->getStr('new', idx($render_data, 'new'));
	$old_ids = array_filter(explode(',', $old_ids));
	$new_ids = array_filter(explode(',', $new_ids));

	$type_inline = DifferentialTransaction::TYPE_INLINE;
	$changeset_ids = array_merge($old_ids, $new_ids);
	$inlines = array();
	foreach ($timeline->getTransactions() as $xaction) {
	if ($xaction->getTransactionType() == $type_inline) {
	$inlines[] = $xaction->getComment();
	$changeset_ids[] = $xaction->getComment()->getChangesetID();
	}
	}

	if ($changeset_ids) {
	$changesets = id(new DifferentialChangesetQuery())
	->setViewer($request->getUser())
	->withIDs($changeset_ids)
	->execute();
	$changesets = mpull($changesets, null, 'getID');
	} else {
	$changesets = array();
	}

	foreach ($inlines as $key => $inline) {
	$inlines[$key] = DifferentialInlineComment::newFromModernComment(
	$inline);
	}

	$query = id(new DifferentialInlineCommentQuery())
	->needHidden(true)
	->setViewer($viewer);

	// NOTE: This is a bit sketchy: this method adjusts the inlines as a
	// side effect, which means it will ultimately adjust the transaction
	// comments and affect timeline rendering.
	$query->adjustInlinesForChangesets(
	$inlines,
	array_select_keys($changesets, $old_ids),
	array_select_keys($changesets, $new_ids),
	$this);

	return $timeline
	->setChangesets($changesets)
	->setRevision($this)
	->setLeftDiff($left_diff)
	->setRightDiff($right_diff);
	}


	/* -( PhabricatorDestructibleInterface )----------------------------------- */


	public function destroyObjectPermanently(
	PhabricatorDestructionEngine $engine) {

	$this->openTransaction();
	$diffs = id(new DifferentialDiffQuery())
	->setViewer($engine->getViewer())
	->withRevisionIDs(array($this->getID()))
	->execute();
	foreach ($diffs as $diff) {
	$engine->destroyObject($diff);
	}

	$conn_w = $this->establishConnection('w');

	queryfx(
	$conn_w,
	'DELETE FROM %T WHERE revisionID = %d',
	self::TABLE_COMMIT,
	$this->getID());

	// we have to do paths a little differently as they do not have
	// an id or phid column for delete() to act on
	$dummy_path = new DifferentialAffectedPath();
	queryfx(
	$conn_w,
	'DELETE FROM %T WHERE revisionID = %d',
	$dummy_path->getTableName(),
	$this->getID());

	$this->delete();
	$this->saveTransaction();
	}


	/* -( PhabricatorFulltextInterface )--------------------------------------- */


	public function newFulltextEngine() {
	return new DifferentialRevisionFulltextEngine();
	}


	/* -( PhabricatorFerretInterface )----------------------------------------- */


	public function newFerretEngine() {
	return new DifferentialRevisionFerretEngine();
	}


	/* -( PhabricatorConduitResultInterface )---------------------------------- */


	public function getFieldSpecificationsForConduit() {
	return array(
	id(new PhabricatorConduitSearchFieldSpecification())
	->setKey('title')
	->setType('string')
	->setDescription(pht('The revision title.')),
	id(new PhabricatorConduitSearchFieldSpecification())
	->setKey('authorPHID')
	->setType('phid')
	->setDescription(pht('Revision author PHID.')),
	id(new PhabricatorConduitSearchFieldSpecification())
	->setKey('status')
	->setType('map<string, wild>')
	->setDescription(pht('Information about revision status.')),
	id(new PhabricatorConduitSearchFieldSpecification())
	->setKey('repositoryPHID')
	->setType('phid?')
	->setDescription(pht('Revision repository PHID.')),
	id(new PhabricatorConduitSearchFieldSpecification())
	->setKey('diffPHID')
	->setType('phid')
	->setDescription(pht('Active diff PHID.')),
	id(new PhabricatorConduitSearchFieldSpecification())
	->setKey('summary')
	->setType('string')
	->setDescription(pht('Revision summary.')),
	);
	}

	public function getFieldValuesForConduit() {
	$status = $this->getStatusObject();
	$status_info = array(
	'value' => $status->getKey(),
	'name' => $status->getDisplayName(),
	'closed' => $status->isClosedStatus(),
	'color.ansi' => $status->getANSIColor(),
	);

	return array(
	'title' => $this->getTitle(),
	'authorPHID' => $this->getAuthorPHID(),
	'status' => $status_info,
	'repositoryPHID' => $this->getRepositoryPHID(),
	'diffPHID' => $this->getActiveDiffPHID(),
	'summary' => $this->getSummary(),
	);
	}

	public function getConduitSearchAttachments() {
	return array(
	id(new DifferentialReviewersSearchEngineAttachment())
	->setAttachmentKey('reviewers'),
	);
	}


	/* -( PhabricatorDraftInterface )------------------------------------------ */


	public function newDraftEngine() {
	return new DifferentialRevisionDraftEngine();
	}

	}
	diff --git a/src/applications/harbormaster/engine/HarbormasterBuildEngine.php b/src/applications/harbormaster/engine/HarbormasterBuildEngine.php
	index ea20c64538..454fec7f37 100644
	--- a/src/applications/harbormaster/engine/HarbormasterBuildEngine.php
	+++ b/src/applications/harbormaster/engine/HarbormasterBuildEngine.php
	@@ -1,623 +1,640 @@
	<?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();
	+ }
	+ }
	+
	// 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;
	}

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

	$lock->unlock();

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

	// If we changed the buildable status, try to post a transaction to the
	// object about it. We can safely do this outside of the locked region.

	// NOTE: We only post transactions for automatic buildables, not for
	// manual ones: manual builds are test builds, whoever is doing tests
	// can look at the results themselves, and other users generally don't
	// care about the outcome.

	$should_publish =
	($did_update) &&
	($new_status != HarbormasterBuildableStatus::STATUS_BUILDING) &&
	(!$buildable->getIsManualBuildable());

	if (!$should_publish) {
	return;
	}

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

	$publish_phid = $object->getHarbormasterPublishablePHID();
	if (!$publish_phid) {
	return;
	}

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

	if (!($publish instanceof PhabricatorApplicationTransactionInterface)) {
	return;
	}

	$template = $publish->getApplicationTransactionTemplate();
	if (!$template) {
	return;
	}

	$template
	->setTransactionType(PhabricatorTransactions::TYPE_BUILDABLE)
	->setMetadataValue(
	'harbormaster:buildablePHID',
	$buildable->getPHID())
	->setOldValue($old_status)
	->setNewValue($new_status);

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

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

	$editor = $publish->getApplicationTransactionEditor()
	->setActor($viewer)
	->setActingAsPHID($harbormaster_phid)
	->setContentSource($daemon_source)
	->setContinueOnNoEffect(true)
	->setContinueOnMissingFields(true);

	$editor->applyTransactions(
	$publish->getApplicationTransactionObject(),
	array($template));
	}

	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]);
	}
	}

	}
	diff --git a/src/applications/harbormaster/engine/HarbormasterMessageType.php b/src/applications/harbormaster/engine/HarbormasterMessageType.php
	index 8b3ebe2e6f..135fb23ffc 100644
	--- a/src/applications/harbormaster/engine/HarbormasterMessageType.php
	+++ b/src/applications/harbormaster/engine/HarbormasterMessageType.php
	@@ -1,46 +1,47 @@
	<?php

	final class HarbormasterMessageType extends Phobject {

	const MESSAGE_PASS = 'pass';
	const MESSAGE_FAIL = 'fail';
	const MESSAGE_WORK = 'work';

	const BUILDABLE_BUILD = 'build';
	+ const BUILDABLE_CONTAINER = 'container';

	public static function getAllMessages() {
	return array_keys(self::getMessageSpecifications());
	}

	public static function getMessageDescription($message) {
	$spec = self::getMessageSpecification($message);
	if (!$spec) {
	return null;
	}
	return idx($spec, 'description');
	}

	private static function getMessageSpecification($message) {
	$specs = self::getMessageSpecifications();
	return idx($specs, $message);
	}

	private static function getMessageSpecifications() {
	return array(
	self::MESSAGE_PASS => array(
	'description' => pht(
	'Report that the target is complete, and the target has passed.'),
	),
	self::MESSAGE_FAIL => array(
	'description' => pht(
	'Report that the target is complete, and the target has failed.'),
	),
	self::MESSAGE_WORK => array(
	'description' => pht(
	'Report that work on the target is ongoing. This message can be '.
	'used to report partial results during a build.'),
	),
	);
	}

	}

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