Provide a "Reviewers" attachment to "differential.revision.search"

Summary: Allow API callers to retrieve reviewer information via a new "reviewers" attachment.

Test Plan: {F4675784}

Reviewers: chad, lvital

Reviewed By: lvital

Subscribers: lvital

Differential Revision: https://secure.phabricator.com/D17633

src/__phutil_library_map__.php

@@ -502,6 +502,7 @@ phutil_register_library_map(array(
     'DifferentialReviewersCommitMessageField' => 'applications/differential/field/DifferentialReviewersCommitMessageField.php',
     'DifferentialReviewersField' => 'applications/differential/customfield/DifferentialReviewersField.php',
     'DifferentialReviewersHeraldAction' => 'applications/differential/herald/DifferentialReviewersHeraldAction.php',
+    'DifferentialReviewersSearchEngineAttachment' => 'applications/differential/engineextension/DifferentialReviewersSearchEngineAttachment.php',
     'DifferentialReviewersView' => 'applications/differential/view/DifferentialReviewersView.php',
     'DifferentialRevision' => 'applications/differential/storage/DifferentialRevision.php',
     'DifferentialRevisionAbandonTransaction' => 'applications/differential/xaction/DifferentialRevisionAbandonTransaction.php',
@@ -5275,6 +5276,7 @@ phutil_register_library_map(array(
     'DifferentialReviewersCommitMessageField' => 'DifferentialCommitMessageField',
     'DifferentialReviewersField' => 'DifferentialCoreCustomField',
     'DifferentialReviewersHeraldAction' => 'HeraldAction',
+    'DifferentialReviewersSearchEngineAttachment' => 'PhabricatorSearchEngineAttachment',
     'DifferentialReviewersView' => 'AphrontView',
     'DifferentialRevision' => array(
       'DifferentialDAO',

src/applications/differential/engineextension/DifferentialReviewersSearchEngineAttachment.php

@@ -0,0 +1,41 @@
+<?php
+
+final class DifferentialReviewersSearchEngineAttachment
+  extends PhabricatorSearchEngineAttachment {
+
+  public function getAttachmentName() {
+    return pht('Differential Reviewers');
+  }
+
+  public function getAttachmentDescription() {
+    return pht('Get the reviewers for each revision.');
+  }
+
+  public function willLoadAttachmentData($query, $spec) {
+    $query->needReviewers(true);
+  }
+
+  public function getAttachmentForObject($object, $data, $spec) {
+    $reviewers = $object->getReviewers();
+
+    $status_blocking = DifferentialReviewerStatus::STATUS_BLOCKING;
+
+    $list = array();
+    foreach ($reviewers as $reviewer) {
+      $status = $reviewer->getReviewerStatus();
+      $is_blocking = ($status == $status_blocking);
+
+      $list[] = array(
+        'reviewerPHID' => $reviewer->getReviewerPHID(),
+        'status' => $status,
+        'isBlocking' => $is_blocking,
+        'actorPHID' => $reviewer->getLastActorPHID(),
+      );
+    }
+
+    return array(
+      'reviewers' => $list,
+    );
+  }
+
+}

src/applications/differential/storage/DifferentialRevision.php

@@ -907,7 +907,10 @@ final class DifferentialRevision extends DifferentialDAO
   }
 
   public function getConduitSearchAttachments() {
-    return array();
+    return array(
+      id(new DifferentialReviewersSearchEngineAttachment())
+        ->setAttachmentKey('reviewers'),
+    );
   }