Write an explicit edge for commit membership in packages

Summary:
Ref T10978. Currently, during commit import, we write an "Audit Not Required" auditor for commits which don't require an audit.

This auditor is used to power the "Commits in this package" query in Owners.

This conflates audits and commit/package membership. I think it might even predate edges. Code needs to dance around this mess and we get the wrong result in some cases, since auditors are now editable.

Instead, write an explicit edge which just says "this commit is part of such-and-such packages". Then use that to run the query. Logical!

I'll issue guidance on this but I'm not migrating it, since it fixes itself going forward and only really affects the UI in Owners.

Test Plan:
  - Ran `bin/audit update-owners` with various arguments.
  - Viewed packages in web UI, saw them load the proper commits.
  - Queried by packages in Diffusion explicitly.
  - Clicked the "View All" link in Owners and got to the right search UI.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10978

Differential Revision: https://secure.phabricator.com/D17264

src/applications/diffusion/edge/DiffusionCommitHasPackageEdgeType.php

@@ -0,0 +1,8 @@
+<?php
+
+final class DiffusionCommitHasPackageEdgeType
+  extends PhabricatorEdgeType {
+
+  const EDGECONST = 65;
+
+}

src/applications/diffusion/query/DiffusionCommitQuery.php

@@ -13,6 +13,7 @@ final class DiffusionCommitQuery
   private $identifierMap;
   private $responsiblePHIDs;
   private $statuses;
+  private $packagePHIDs;
 
   private $needAuditRequests;
   private $auditIDs;
@@ -124,6 +125,11 @@ final class DiffusionCommitQuery
     return $this;
   }
 
+  public function withPackagePHIDs(array $package_phids) {
+    $this->packagePHIDs = $package_phids;
+    return $this;
+  }
+
   public function withStatuses(array $statuses) {
     $this->statuses = $statuses;
     return $this;
@@ -498,6 +504,13 @@ final class DiffusionCommitQuery
         $this->statuses);
     }
 
+    if ($this->packagePHIDs !== null) {
+      $where[] = qsprintf(
+        $conn,
+        'package.dst IN (%Ls)',
+        $this->packagePHIDs);
+    }
+
     return $where;
   }
 
@@ -519,6 +532,10 @@ final class DiffusionCommitQuery
     return (bool)$this->responsiblePHIDs;
   }
 
+  private function shouldJoinOwners() {
+    return (bool)$this->packagePHIDs;
+  }
+
   protected function buildJoinClauseParts(AphrontDatabaseConnection $conn) {
     $join = parent::buildJoinClauseParts($conn);
     $audit_request = new PhabricatorRepositoryAuditRequest();
@@ -537,6 +554,15 @@ final class DiffusionCommitQuery
         $audit_request->getTableName());
     }
 
+    if ($this->shouldJoinOwners()) {
+      $join[] = qsprintf(
+        $conn,
+        'JOIN %T package ON commit.phid = package.src
+          AND package.type = %s',
+        PhabricatorEdgeConfig::TABLE_NAME_EDGE,
+        DiffusionCommitHasPackageEdgeType::EDGECONST);
+    }
+
     return $join;
   }
 
@@ -549,6 +575,10 @@ final class DiffusionCommitQuery
       return true;
     }
 
+    if ($this->shouldJoinOwners()) {
+      return true;
+    }
+
     return parent::shouldGroupQueryResultRows();
   }