Add an edge between Passphrase credentials and objects which use them

Summary: Ref T4122. Add an edge to keep track of where a credential is used, and show it in the UI.

Test Plan:
See "Used By":

{F84099}

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T4122

Differential Revision: https://secure.phabricator.com/D7628

resources/sql/patches/20131121.passphraseedge.sql

···
+CREATE TABLE {$NAMESPACE}_passphrase.edge (
+  src VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  type VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  dst VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  dateCreated INT UNSIGNED NOT NULL,
+  seq INT UNSIGNED NOT NULL,
+  dataID INT UNSIGNED,
+  PRIMARY KEY (src, type, dst),
+  KEY (src, type, dateCreated, seq)
+) ENGINE=InnoDB, COLLATE utf8_general_ci;
+
+CREATE TABLE {$NAMESPACE}_passphrase.edgedata (
+  id INT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
+  data LONGTEXT NOT NULL COLLATE utf8_bin
+) ENGINE=InnoDB, COLLATE utf8_general_ci;

src/applications/passphrase/controller/PassphraseCredentialViewController.php

···
       pht('Username'),
       $credential->getUsername());
 
+    $used_by_phids = PhabricatorEdgeQuery::loadDestinationPHIDs(
+      $credential->getPHID(),
+      PhabricatorEdgeConfig::TYPE_CREDENTIAL_USED_BY_OBJECT);
+
+    if ($used_by_phids) {
+      $this->loadHandles($used_by_phids);
+      $properties->addProperty(
+        pht('Used By'),
+        $this->renderHandlesForPHIDs($used_by_phids));
+    }
+
     $description = $credential->getDescription();
     if (strlen($description)) {
       $properties->addSectionHeader(

src/applications/passphrase/storage/PassphraseCredential.php

···
     return id(new PassphraseCredential())
       ->setName('')
       ->setUsername('')
+      ->setDescription('')
       ->setIsDestroyed(0)
       ->setViewPolicy($actor->getPHID())
       ->setEditPolicy($actor->getPHID());

src/infrastructure/edges/constants/PhabricatorEdgeConfig.php

···
   const TYPE_MOCK_HAS_TASK              = 37;
   const TYPE_TASK_HAS_MOCK              = 38;
 
+  const TYPE_OBJECT_USES_CREDENTIAL     = 39;
+  const TYPE_CREDENTIAL_USED_BY_OBJECT  = 40;
+
   const TYPE_TEST_NO_CYCLE              = 9000;
 
   const TYPE_PHOB_HAS_ASANATASK         = 80001;
···
 
   const TYPE_PHOB_HAS_JIRAISSUE         = 80004;
   const TYPE_JIRAISSUE_HAS_PHOB         = 80005;
+
 
   public static function getInverse($edge_type) {
     static $map = array(
···
       self::TYPE_REVIEWER_FOR_DREV => self::TYPE_DREV_HAS_REVIEWER,
 
       self::TYPE_PHOB_HAS_JIRAISSUE => self::TYPE_JIRAISSUE_HAS_PHOB,
-      self:: TYPE_JIRAISSUE_HAS_PHOB => self::TYPE_PHOB_HAS_JIRAISSUE
+      self::TYPE_JIRAISSUE_HAS_PHOB => self::TYPE_PHOB_HAS_JIRAISSUE,
+
+      self::TYPE_OBJECT_USES_CREDENTIAL => self::TYPE_CREDENTIAL_USED_BY_OBJECT,
+      self::TYPE_CREDENTIAL_USED_BY_OBJECT => self::TYPE_OBJECT_USES_CREDENTIAL,
     );
 
     return idx($map, $edge_type);

src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php

···
         'type' => 'sql',
         'name' => $this->getPatchPath('20131120.nuancesourcetype.sql'),
       ),
+      '20131121.passphraseedge.sql' => array(
+        'type' => 'sql',
+        'name' => $this->getPatchPath('20131121.passphraseedge.sql'),
+      ),
     );
   }
 }