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DifferentialMail.php
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Fri, Nov 29, 19:55

DifferentialMail.php
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<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
abstract class DifferentialMail {
protected $to = array();
protected $cc = array();
protected $actorHandle;
protected $revision;
protected $comment;
protected $changesets;
protected $inlineComments;
protected $isFirstMailAboutRevision;
protected $isFirstMailToRecipients;
protected $heraldTranscriptURI;
protected $heraldRulesHeader;
protected $replyHandler;
protected $parentMessageID;
protected function renderSubject() {
$revision = $this->getRevision();
$title = $revision->getTitle();
$id = $revision->getID();
return "D{$id}: {$title}";
}
abstract protected function renderVaryPrefix();
abstract protected function renderBody();
public function setActorHandle($actor_handle) {
$this->actorHandle = $actor_handle;
return $this;
}
public function getActorHandle() {
return $this->actorHandle;
}
protected function getActorName() {
$handle = $this->getActorHandle();
if ($handle) {
return $handle->getName();
}
return '???';
}
public function setParentMessageID($parent_message_id) {
$this->parentMessageID = $parent_message_id;
return $this;
}
public function setXHeraldRulesHeader($header) {
$this->heraldRulesHeader = $header;
return $this;
}
public function send() {
$to_phids = $this->getToPHIDs();
if (!$to_phids) {
throw new Exception('No "To:" users provided!');
}
$cc_phids = $this->getCCPHIDs();
$attachments = $this->buildAttachments();
$template = new PhabricatorMetaMTAMail();
$actor_handle = $this->getActorHandle();
$reply_handler = $this->getReplyHandler();
if ($actor_handle) {
$template->setFrom($actor_handle->getPHID());
}
$template
->setIsHTML($this->shouldMarkMailAsHTML())
->setParentMessageID($this->parentMessageID)
->addHeader('Thread-Topic', $this->getThreadTopic());
$template->setAttachments($attachments);
$template->setThreadID(
$this->getThreadID(),
$this->isFirstMailAboutRevision());
if ($this->heraldRulesHeader) {
$template->addHeader('X-Herald-Rules', $this->heraldRulesHeader);
}
$revision = $this->revision;
if ($revision) {
if ($revision->getAuthorPHID()) {
$template->addHeader(
'X-Differential-Author',
'<'.$revision->getAuthorPHID().'>');
}
$reviewer_phids = $revision->getReviewers();
if ($reviewer_phids) {
// Add several headers to support e-mail clients which are not able to
// create rules using regular expressions or wildcards (namely Outlook).
$template->addPHIDHeaders('X-Differential-Reviewer', $reviewer_phids);
// Add it also as a list to allow matching of the first reviewer and
// also for backwards compatibility.
$template->addHeader(
'X-Differential-Reviewers',
'<'.implode('>, <', $reviewer_phids).'>');
}
if ($cc_phids) {
$template->addPHIDHeaders('X-Differential-CC', $cc_phids);
$template->addHeader(
'X-Differential-CCs',
'<'.implode('>, <', $cc_phids).'>');
// Determine explicit CCs (those added by humans) and put them in a
// header so users can differentiate between Herald CCs and human CCs.
$relation_subscribed = DifferentialRevision::RELATION_SUBSCRIBED;
$raw = $revision->getRawRelations($relation_subscribed);
$reason_phids = ipull($raw, 'reasonPHID');
$reason_handles = id(new PhabricatorObjectHandleData($reason_phids))
->loadHandles();
$explicit_cc = array();
foreach ($raw as $relation) {
if (!$relation['reasonPHID']) {
continue;
}
$type = $reason_handles[$relation['reasonPHID']]->getType();
if ($type == PhabricatorPHIDConstants::PHID_TYPE_USER) {
$explicit_cc[] = $relation['objectPHID'];
}
}
if ($explicit_cc) {
$template->addPHIDHeaders('X-Differential-Explicit-CC', $explicit_cc);
$template->addHeader(
'X-Differential-Explicit-CCs',
'<'.implode('>, <', $explicit_cc).'>');
}
}
}
$template->setIsBulk(true);
$template->setRelatedPHID($this->getRevision()->getPHID());
$mailtags = $this->getMailTags();
if ($mailtags) {
$template->setMailTags($mailtags);
}
$phids = array();
foreach ($to_phids as $phid) {
$phids[$phid] = true;
}
foreach ($cc_phids as $phid) {
$phids[$phid] = true;
}
$phids = array_keys($phids);
$handles = id(new PhabricatorObjectHandleData($phids))->loadHandles();
$objects = id(new PhabricatorObjectHandleData($phids))->loadObjects();
$to_handles = array_select_keys($handles, $to_phids);
$cc_handles = array_select_keys($handles, $cc_phids);
$this->prepareBody();
$mails = $reply_handler->multiplexMail($template, $to_handles, $cc_handles);
$original_translator = PhutilTranslator::getInstance();
if (!PhabricatorMetaMTAMail::shouldMultiplexAllMail()) {
$translation = PhabricatorEnv::newObjectFromConfig(
'translation.provider');
$translator = id(new PhutilTranslator())
->setLanguage($translation->getLanguage())
->addTranslations($translation->getTranslations());
}
try {
foreach ($mails as $mail) {
if (PhabricatorMetaMTAMail::shouldMultiplexAllMail()) {
$translation = newv($mail->getTranslation($objects), array());
$translator = id(new PhutilTranslator())
->setLanguage($translation->getLanguage())
->addTranslations($translation->getTranslations());
PhutilTranslator::setInstance($translator);
}
$body =
$this->buildBody()."\n".
$reply_handler->getRecipientsSummary($to_handles, $cc_handles);
$mail
->setSubject($this->renderSubject())
->setSubjectPrefix($this->getSubjectPrefix())
->setVarySubjectPrefix($this->renderVaryPrefix())
->setBody($body);
$event = new PhabricatorEvent(
PhabricatorEventType::TYPE_DIFFERENTIAL_WILLSENDMAIL,
array(
'mail' => $mail,
)
);
PhutilEventEngine::dispatchEvent($event);
$mail = $event->getValue('mail');
$mail->saveAndSend();
}
} catch (Exception $ex) {
PhutilTranslator::setInstance($original_translator);
throw $ex;
}
PhutilTranslator::setInstance($original_translator);
}
protected function getMailTags() {
return array();
}
protected function getSubjectPrefix() {
return PhabricatorEnv::getEnvConfig('metamta.differential.subject-prefix');
}
protected function shouldMarkMailAsHTML() {
return false;
}
/**
* @{method:buildBody} is called once for each e-mail recipient to allow
* translating text to his language. This method can be used to load data that
* don't need translation and use them later in @{method:buildBody}.
*
* @param
* @return
*/
protected function prepareBody() {
}
protected function buildBody() {
$body = $this->renderBody();
$reply_handler = $this->getReplyHandler();
$reply_instructions = $reply_handler->getReplyHandlerInstructions();
if ($reply_instructions) {
$body .=
"\nREPLY HANDLER ACTIONS\n".
" {$reply_instructions}\n";
}
if ($this->getHeraldTranscriptURI() && $this->isFirstMailToRecipients()) {
$manage_uri = PhabricatorEnv::getProductionURI(
'/herald/view/differential/');
$xscript_uri = $this->getHeraldTranscriptURI();
$body .= <<<EOTEXT
MANAGE HERALD DIFFERENTIAL RULES
{$manage_uri}
WHY DID I GET THIS EMAIL?
{$xscript_uri}
EOTEXT;
}
return $body;
}
/**
* You can override this method in a subclass and return array of attachments
* to be sent with the email. Each attachment is an instance of
* PhabricatorMetaMTAAttachment.
*/
protected function buildAttachments() {
return array();
}
public function getReplyHandler() {
if (!$this->replyHandler) {
$this->replyHandler =
self::newReplyHandlerForRevision($this->getRevision());
}
return $this->replyHandler;
}
public static function newReplyHandlerForRevision(
DifferentialRevision $revision) {
$reply_handler = PhabricatorEnv::newObjectFromConfig(
'metamta.differential.reply-handler');
$reply_handler->setMailReceiver($revision);
return $reply_handler;
}
protected function formatText($text) {
$text = explode("\n", rtrim($text));
foreach ($text as &$line) {
$line = rtrim(' '.$line);
}
unset($line);
return implode("\n", $text);
}
public function setToPHIDs(array $to) {
$this->to = $this->filterContactPHIDs($to);
return $this;
}
public function setCCPHIDs(array $cc) {
$this->cc = $this->filterContactPHIDs($cc);
return $this;
}
protected function filterContactPHIDs(array $phids) {
return $phids;
// TODO: actually do this?
// Differential revisions use Subscriptions for CCs, so any arbitrary
// PHID can end up CC'd to them. Only try to actually send email PHIDs
// which have ToolsHandle types that are marked emailable. If we don't
// filter here, sending the email will fail.
/*
$handles = array();
prep(new ToolsHandleData($phids, $handles));
foreach ($handles as $phid => $handle) {
if (!$handle->isEmailable()) {
unset($handles[$phid]);
}
}
return array_keys($handles);
*/
}
protected function getToPHIDs() {
return $this->to;
}
protected function getCCPHIDs() {
return $this->cc;
}
public function setRevision($revision) {
$this->revision = $revision;
return $this;
}
public function getRevision() {
return $this->revision;
}
protected function getThreadID() {
$phid = $this->getRevision()->getPHID();
return "differential-rev-{$phid}-req";
}
protected function getThreadTopic() {
$id = $this->getRevision()->getID();
$title = $this->getRevision()->getOriginalTitle();
return "D{$id}: {$title}";
}
public function setComment($comment) {
$this->comment = $comment;
return $this;
}
public function getComment() {
return $this->comment;
}
public function setChangesets($changesets) {
$this->changesets = $changesets;
return $this;
}
public function getChangesets() {
return $this->changesets;
}
public function setInlineComments(array $inline_comments) {
assert_instances_of($inline_comments, 'PhabricatorInlineCommentInterface');
$this->inlineComments = $inline_comments;
return $this;
}
public function getInlineComments() {
return $this->inlineComments;
}
protected function renderAuxFields($phase) {
$selector = DifferentialFieldSelector::newSelector();
$aux_fields = $selector->sortFieldsForMail(
$selector->getFieldSpecifications());
$body = array();
foreach ($aux_fields as $field) {
$field->setRevision($this->getRevision());
// TODO: Introduce and use getRequiredHandlePHIDsForMail() and load all
// handles in prepareBody().
$text = $field->renderValueForMail($phase);
if ($text !== null) {
$body[] = $text;
$body[] = null;
}
}
return implode("\n", $body);
}
public function setIsFirstMailToRecipients($first) {
$this->isFirstMailToRecipients = $first;
return $this;
}
public function isFirstMailToRecipients() {
return $this->isFirstMailToRecipients;
}
public function setIsFirstMailAboutRevision($first) {
$this->isFirstMailAboutRevision = $first;
return $this;
}
public function isFirstMailAboutRevision() {
return $this->isFirstMailAboutRevision;
}
public function setHeraldTranscriptURI($herald_transcript_uri) {
$this->heraldTranscriptURI = $herald_transcript_uri;
return $this;
}
public function getHeraldTranscriptURI() {
return $this->heraldTranscriptURI;
}
protected function renderHandleList(array $handles, array $phids) {
assert_instances_of($handles, 'PhabricatorObjectHandle');
$names = array();
foreach ($phids as $phid) {
$names[] = $handles[$phid]->getName();
}
return implode(', ', $names);
}
}

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