Paste - add transactions

Summary: Ref T3650. This adds a create transaction, transactions for metadata (title, langauge, view policy), and comments. Editor is used on all create /edit paths.

Test Plan: made some pastes via web and email - yay. edited pastes - yay. verified txns showed up on pastes and in feed correctly.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T3516, T3650

Differential Revision: https://secure.phabricator.com/D6645

resources/sql/patches/20130801.pastexactions.php

@@ -0,0 +1,46 @@
+<?php
+
+$table = new PhabricatorPaste();
+$x_table = new PhabricatorPasteTransaction();
+
+$conn_w = $table->establishConnection('w');
+$conn_w->openTransaction();
+
+echo "Adding transactions for existing paste objects...\n";
+
+$rows = new LiskRawMigrationIterator($conn_w, 'pastebin_paste');
+foreach ($rows as $row) {
+
+  $id = $row['id'];
+  echo "Adding transactions for paste id {$id}...\n";
+
+  $xaction_phid = PhabricatorPHID::generateNewPHID(
+    PhabricatorApplicationTransactionPHIDTypeTransaction::TYPECONST);
+
+  queryfx(
+    $conn_w,
+    'INSERT INTO %T (phid, authorPHID, objectPHID, viewPolicy, editPolicy,
+        transactionType, oldValue, newValue,
+        contentSource, metadata, dateCreated, dateModified)
+      VALUES (%s, %s, %s, %s, %s, %s, %ns, %ns, %s, %s, %d, %d)',
+    $x_table->getTableName(),
+    $xaction_phid,
+    $row['authorPHID'],
+    $row['phid'],
+    'public',
+    $row['authorPHID'],
+    PhabricatorPasteTransaction::TYPE_CREATE,
+    'null',
+    $row['filePHID'],
+    PhabricatorContentSource::newForSource(
+      PhabricatorContentSource::SOURCE_LEGACY,
+      array())->serialize(),
+    '[]',
+    $row['dateCreated'],
+    $row['dateCreated']);
+
+}
+
+$conn_w->saveTransaction();
+
+echo "Done.\n";

resources/sql/patches/20130801.pastexactions.sql

@@ -0,0 +1,43 @@
+CREATE TABLE {$NAMESPACE}_pastebin.pastebin_pastetransaction (
+  id INT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
+  phid VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  authorPHID VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  objectPHID VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  viewPolicy VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  editPolicy VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  commentPHID VARCHAR(64) COLLATE utf8_bin,
+  commentVersion INT UNSIGNED NOT NULL,
+  transactionType VARCHAR(32) NOT NULL COLLATE utf8_bin,
+  oldValue LONGTEXT NOT NULL COLLATE utf8_bin,
+  newValue LONGTEXT NOT NULL COLLATE utf8_bin,
+  contentSource LONGTEXT NOT NULL COLLATE utf8_bin,
+  metadata LONGTEXT NOT NULL COLLATE utf8_bin,
+  dateCreated INT UNSIGNED NOT NULL,
+  dateModified INT UNSIGNED NOT NULL,
+
+  UNIQUE KEY `key_phid` (phid),
+  KEY `key_object` (objectPHID)
+
+) ENGINE=InnoDB, COLLATE utf8_general_ci;
+
+CREATE TABLE {$NAMESPACE}_pastebin.pastebin_pastetransaction_comment (
+  id INT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
+  phid VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  transactionPHID VARCHAR(64) COLLATE utf8_bin,
+  authorPHID VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  viewPolicy VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  editPolicy VARCHAR(64) NOT NULL COLLATE utf8_bin,
+  commentVersion INT UNSIGNED NOT NULL,
+  content LONGTEXT NOT NULL COLLATE utf8_bin,
+  contentSource LONGTEXT NOT NULL COLLATE utf8_bin,
+  isDeleted BOOL NOT NULL,
+  dateCreated INT UNSIGNED NOT NULL,
+  dateModified INT UNSIGNED NOT NULL,
+
+  lineNumber INT UNSIGNED,
+  lineLength INT UNSIGNED,
+
+  UNIQUE KEY `key_phid` (phid),
+  UNIQUE KEY `key_version` (transactionPHID, commentVersion)
+
+) ENGINE=InnoDB, COLLATE utf8_general_ci;

src/__phutil_library_map__.php

@@ -1364,16 +1364,21 @@ phutil_register_library_map(array(
     'PhabricatorPHPMailerConfigOptions' => 'applications/config/option/PhabricatorPHPMailerConfigOptions.php',
     'PhabricatorPagedFormExample' => 'applications/uiexample/examples/PhabricatorPagedFormExample.php',
     'PhabricatorPaste' => 'applications/paste/storage/PhabricatorPaste.php',
+    'PhabricatorPasteCommentController' => 'applications/paste/controller/PhabricatorPasteCommentController.php',
     'PhabricatorPasteConfigOptions' => 'applications/paste/config/PhabricatorPasteConfigOptions.php',
     'PhabricatorPasteController' => 'applications/paste/controller/PhabricatorPasteController.php',
     'PhabricatorPasteDAO' => 'applications/paste/storage/PhabricatorPasteDAO.php',
     'PhabricatorPasteEditController' => 'applications/paste/controller/PhabricatorPasteEditController.php',
+    'PhabricatorPasteEditor' => 'applications/paste/editor/PhabricatorPasteEditor.php',
     'PhabricatorPasteListController' => 'applications/paste/controller/PhabricatorPasteListController.php',
     'PhabricatorPastePHIDTypePaste' => 'applications/paste/phid/PhabricatorPastePHIDTypePaste.php',
     'PhabricatorPasteQuery' => 'applications/paste/query/PhabricatorPasteQuery.php',
     'PhabricatorPasteRemarkupRule' => 'applications/paste/remarkup/PhabricatorPasteRemarkupRule.php',
     'PhabricatorPasteSearchEngine' => 'applications/paste/query/PhabricatorPasteSearchEngine.php',
     'PhabricatorPasteTestDataGenerator' => 'applications/paste/lipsum/PhabricatorPasteTestDataGenerator.php',
+    'PhabricatorPasteTransaction' => 'applications/paste/storage/PhabricatorPasteTransaction.php',
+    'PhabricatorPasteTransactionComment' => 'applications/paste/storage/PhabricatorPasteTransactionComment.php',
+    'PhabricatorPasteTransactionQuery' => 'applications/paste/query/PhabricatorPasteTransactionQuery.php',
     'PhabricatorPasteViewController' => 'applications/paste/controller/PhabricatorPasteViewController.php',
     'PhabricatorPeopleController' => 'applications/people/controller/PhabricatorPeopleController.php',
     'PhabricatorPeopleEditController' => 'applications/people/controller/PhabricatorPeopleEditController.php',
@@ -3406,10 +3411,12 @@ phutil_register_library_map(array(
       1 => 'PhabricatorTokenReceiverInterface',
       2 => 'PhabricatorPolicyInterface',
     ),
+    'PhabricatorPasteCommentController' => 'PhabricatorPasteController',
     'PhabricatorPasteConfigOptions' => 'PhabricatorApplicationConfigOptions',
     'PhabricatorPasteController' => 'PhabricatorController',
     'PhabricatorPasteDAO' => 'PhabricatorLiskDAO',
     'PhabricatorPasteEditController' => 'PhabricatorPasteController',
+    'PhabricatorPasteEditor' => 'PhabricatorApplicationTransactionEditor',
     'PhabricatorPasteListController' =>
     array(
       0 => 'PhabricatorPasteController',
@@ -3420,6 +3427,9 @@ phutil_register_library_map(array(
     'PhabricatorPasteRemarkupRule' => 'PhabricatorRemarkupRuleObject',
     'PhabricatorPasteSearchEngine' => 'PhabricatorApplicationSearchEngine',
     'PhabricatorPasteTestDataGenerator' => 'PhabricatorTestDataGenerator',
+    'PhabricatorPasteTransaction' => 'PhabricatorApplicationTransaction',
+    'PhabricatorPasteTransactionComment' => 'PhabricatorApplicationTransactionComment',
+    'PhabricatorPasteTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
     'PhabricatorPasteViewController' => 'PhabricatorPasteController',
     'PhabricatorPeopleController' => 'PhabricatorController',
     'PhabricatorPeopleEditController' => 'PhabricatorPeopleController',

src/applications/paste/application/PhabricatorApplicationPaste.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * group paste
+ */
 final class PhabricatorApplicationPaste extends PhabricatorApplication {
 
   public function getBaseURI() {
@@ -35,6 +38,7 @@ final class PhabricatorApplicationPaste extends PhabricatorApplication {
         '(query/(?P<queryKey>[^/]+)/)?' => 'PhabricatorPasteListController',
         'create/'                       => 'PhabricatorPasteEditController',
         'edit/(?P<id>[1-9]\d*)/'        => 'PhabricatorPasteEditController',
+        'comment/(?P<id>[1-9]\d*)/' => 'PhabricatorPasteCommentController',
       ),
     );
   }

src/applications/paste/controller/PhabricatorPasteCommentController.php

@@ -0,0 +1,73 @@
+<?php
+
+/**
+ * @group paste
+ */
+final class PhabricatorPasteCommentController
+  extends PhabricatorPasteController {
+
+  private $id;
+
+  public function willProcessRequest(array $data) {
+    $this->id = idx($data, 'id');
+  }
+
+  public function processRequest() {
+    $request = $this->getRequest();
+    $user = $request->getUser();
+
+    if (!$request->isFormPost()) {
+      return new Aphront400Response();
+    }
+
+    $paste = id(new PhabricatorPasteQuery())
+      ->setViewer($user)
+      ->withIDs(array($this->id))
+      ->executeOne();
+    if (!$paste) {
+      return new Aphront404Response();
+    }
+
+    $is_preview = $request->isPreviewRequest();
+    $draft = PhabricatorDraft::buildFromRequest($request);
+
+    $view_uri = $paste->getURI();
+
+    $xactions = array();
+    $xactions[] = id(new PhabricatorPasteTransaction())
+      ->setTransactionType(PhabricatorTransactions::TYPE_COMMENT)
+      ->attachComment(
+        id(new PhabricatorPasteTransactionComment())
+          ->setContent($request->getStr('comment')));
+
+    $editor = id(new PhabricatorPasteEditor())
+      ->setActor($user)
+      ->setContinueOnNoEffect($request->isContinueRequest())
+      ->setContentSourceFromRequest($request)
+      ->setIsPreview($is_preview);
+
+    try {
+      $xactions = $editor->applyTransactions($paste, $xactions);
+    } catch (PhabricatorApplicationTransactionNoEffectException $ex) {
+      return id(new PhabricatorApplicationTransactionNoEffectResponse())
+        ->setCancelURI($view_uri)
+        ->setException($ex);
+    }
+
+    if ($draft) {
+      $draft->replaceOrDelete();
+    }
+
+    if ($request->isAjax()) {
+      return id(new PhabricatorApplicationTransactionResponse())
+        ->setViewer($user)
+        ->setTransactions($xactions)
+        ->setIsPreview($is_preview)
+        ->setAnchorOffset($request->getStr('anchor'));
+    } else {
+      return id(new AphrontRedirectResponse())
+        ->setURI($view_uri);
+    }
+  }
+
+}

src/applications/paste/controller/PhabricatorPasteController.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * @group paste
+ */
 abstract class PhabricatorPasteController extends PhabricatorController {
 
   public function buildSideNavView($for_app = false) {

src/applications/paste/controller/PhabricatorPasteEditController.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * @group paste
+ */
 final class PhabricatorPasteEditController extends PhabricatorPasteController {
 
   private $id;
@@ -59,44 +62,64 @@ final class PhabricatorPasteEditController extends PhabricatorPasteController {
     $text = null;
     $e_text = true;
     $errors = array();
+    if ($is_create && $parent) {
+      $v_title = pht('Fork of %s', $parent->getFullName());
+      $v_language = $parent->getLanguage();
+      $v_text = $parent->getRawContent();
+    } else {
+      $v_title = $paste->getTitle();
+      $v_language = $paste->getLanguage();
+      $v_text = '';
+    }
+    $v_policy = $paste->getViewPolicy();
+
     if ($request->isFormPost()) {
+      $xactions = array();
 
       if ($is_create) {
-        $text = $request->getStr('text');
-        if (!strlen($text)) {
+        $v_text = $request->getStr('text');
+        if (!strlen($v_text)) {
           $e_text = pht('Required');
           $errors[] = pht('The paste may not be blank.');
         } else {
           $e_text = null;
         }
-      }
+     }
 
-      $paste->setTitle($request->getStr('title'));
-      $paste->setLanguage($request->getStr('language'));
-      $paste->setViewPolicy($request->getStr('can_view'));
+      $v_title = $request->getStr('title');
+      $v_language = $request->getStr('language');
+      $v_policy = $request->getStr('can_view');
 
       // NOTE: The author is the only editor and can always view the paste,
       // so it's impossible for them to choose an invalid policy.
 
       if (!$errors) {
         if ($is_create) {
-          $paste_file = PhabricatorFile::newFromFileData(
-            $text,
-            array(
-              'name' => $paste->getTitle(),
-              'mime-type' => 'text/plain; charset=utf-8',
-              'authorPHID' => $user->getPHID(),
-            ));
-          $paste->setFilePHID($paste_file->getPHID());
+          $xactions[] = id(new PhabricatorPasteTransaction())
+            ->setTransactionType(PhabricatorPasteTransaction::TYPE_CREATE)
+            ->setNewValue(array(
+              'title' => $v_title,
+              'text' => $v_text));
         }
-        $paste->save();
+        $xactions[] = id(new PhabricatorPasteTransaction())
+          ->setTransactionType(PhabricatorPasteTransaction::TYPE_TITLE)
+          ->setNewValue($v_title);
+        $xactions[] = id(new PhabricatorPasteTransaction())
+          ->setTransactionType(PhabricatorPasteTransaction::TYPE_LANGUAGE)
+          ->setNewValue($v_language);
+        $xactions[] = id(new PhabricatorPasteTransaction())
+          ->setTransactionType(PhabricatorTransactions::TYPE_VIEW_POLICY)
+          ->setNewValue($v_policy);
+        $editor = id(new PhabricatorPasteEditor())
+          ->setActor($user)
+          ->setContentSourceFromRequest($request)
+          ->setContinueOnNoEffect(true);
+        $xactions = $editor->applyTransactions($paste, $xactions);
         return id(new AphrontRedirectResponse())->setURI($paste->getURI());
-      }
-    } else {
-      if ($is_create && $parent) {
-        $paste->setTitle(pht('Fork of %s', $parent->getFullName()));
-        $paste->setLanguage($parent->getLanguage());
-        $text = $parent->getRawContent();
+      } else {
+        // make sure we update policy so its correctly populated to what
+        // the user chose
+        $paste->setViewPolicy($v_policy);
       }
     }
 
@@ -120,13 +143,13 @@ final class PhabricatorPasteEditController extends PhabricatorPasteController {
       ->appendChild(
         id(new AphrontFormTextControl())
           ->setLabel(pht('Title'))
-          ->setValue($paste->getTitle())
+          ->setValue($v_title)
           ->setName('title'))
       ->appendChild(
         id(new AphrontFormSelectControl())
           ->setLabel(pht('Language'))
           ->setName('language')
-          ->setValue($paste->getLanguage())
+          ->setValue($v_language)
           ->setOptions($langs));
 
     $policies = id(new PhabricatorPolicyQuery())
@@ -148,7 +171,7 @@ final class PhabricatorPasteEditController extends PhabricatorPasteController {
           id(new AphrontFormTextAreaControl())
             ->setLabel(pht('Text'))
             ->setError($e_text)
-            ->setValue($text)
+            ->setValue($v_text)
             ->setHeight(AphrontFormTextAreaControl::HEIGHT_VERY_TALL)
             ->setCustomClass('PhabricatorMonospaced')
             ->setName('text'));

src/applications/paste/controller/PhabricatorPasteListController.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * @group paste
+ */
 final class PhabricatorPasteListController extends PhabricatorPasteController
   implements PhabricatorApplicationSearchResultsControllerInterface {
 

src/applications/paste/controller/PhabricatorPasteViewController.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * group paste
+ */
 final class PhabricatorPasteViewController extends PhabricatorPasteController {
 
   private $id;
@@ -58,6 +61,49 @@ final class PhabricatorPasteViewController extends PhabricatorPasteController {
           ->setName('P'.$paste->getID())
           ->setHref('/P'.$paste->getID()));
 
+    $xactions = id(new PhabricatorPasteTransactionQuery())
+      ->setViewer($request->getUser())
+      ->withObjectPHIDs(array($paste->getPHID()))
+      ->execute();
+
+    $engine = id(new PhabricatorMarkupEngine())
+      ->setViewer($user);
+    foreach ($xactions as $xaction) {
+      if ($xaction->getComment()) {
+        $engine->addObject(
+          $xaction->getComment(),
+          PhabricatorApplicationTransactionComment::MARKUP_FIELD_COMMENT);
+      }
+    }
+    $engine->process();
+
+    $timeline = id(new PhabricatorApplicationTransactionView())
+      ->setUser($user)
+      ->setObjectPHID($paste->getPHID())
+      ->setTransactions($xactions)
+      ->setMarkupEngine($engine);
+
+    $is_serious = PhabricatorEnv::getEnvConfig('phabricator.serious-business');
+
+    $add_comment_header = id(new PhabricatorHeaderView())
+      ->setHeader(
+        $is_serious
+          ? pht('Add Comment')
+          : pht('Debate Paste Accuracy'));
+
+    $submit_button_name = $is_serious
+      ? pht('Add Comment')
+      : pht('Pity the Fool');
+
+    $draft = PhabricatorDraft::newFromUserAndKey($user, $paste->getPHID());
+
+    $add_comment_form = id(new PhabricatorApplicationTransactionCommentView())
+      ->setUser($user)
+      ->setObjectPHID($paste->getPHID())
+      ->setDraft($draft)
+      ->setAction($this->getApplicationURI('/comment/'.$paste->getID().'/'))
+      ->setSubmitButtonName($submit_button_name);
+
     return $this->buildApplicationPage(
       array(
         $crumbs,
@@ -65,6 +111,9 @@ final class PhabricatorPasteViewController extends PhabricatorPasteController {
         $actions,
         $properties,
         $source_code,
+        $timeline,
+        $add_comment_header,
+        $add_comment_form
       ),
       array(
         'title' => $paste->getFullName(),

src/applications/paste/editor/PhabricatorPasteEditor.php

@@ -0,0 +1,126 @@
+<?php
+
+/**
+ * @group paste
+ */
+final class PhabricatorPasteEditor
+  extends PhabricatorApplicationTransactionEditor {
+
+  public function getTransactionTypes() {
+    $types = parent::getTransactionTypes();
+
+    $types[] = PhabricatorPasteTransaction::TYPE_CREATE;
+    $types[] = PhabricatorPasteTransaction::TYPE_TITLE;
+    $types[] = PhabricatorPasteTransaction::TYPE_LANGUAGE;
+    $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
+    $types[] = PhabricatorTransactions::TYPE_COMMENT;
+
+    return $types;
+  }
+
+  protected function getCustomTransactionOldValue(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+
+    switch ($xaction->getTransactionType()) {
+      case PhabricatorPasteTransaction::TYPE_CREATE:
+        return null;
+      case PhabricatorPasteTransaction::TYPE_TITLE:
+        return $object->getTitle();
+      case PhabricatorPasteTransaction::TYPE_LANGUAGE:
+        return $object->getLanguage();
+    }
+  }
+
+  protected function getCustomTransactionNewValue(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+
+    switch ($xaction->getTransactionType()) {
+      case PhabricatorPasteTransaction::TYPE_CREATE:
+        // this was set via applyInitialEffects
+        return $object->getFilePHID();
+      case PhabricatorPasteTransaction::TYPE_TITLE:
+      case PhabricatorPasteTransaction::TYPE_LANGUAGE:
+        return $xaction->getNewValue();
+    }
+  }
+
+  protected function applyCustomInternalTransaction(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+
+    switch ($xaction->getTransactionType()) {
+      case PhabricatorPasteTransaction::TYPE_TITLE:
+        $object->setTitle($xaction->getNewValue());
+        break;
+      case PhabricatorPasteTransaction::TYPE_LANGUAGE:
+        $object->setLanguage($xaction->getNewValue());
+        break;
+    }
+  }
+
+  protected function applyCustomExternalTransaction(
+    PhabricatorLiskDAO $object,
+    PhabricatorApplicationTransaction $xaction) {
+  }
+
+
+  protected function shouldApplyInitialEffects(
+    PhabricatorLiskDAO $object,
+    array $xactions) {
+
+    foreach ($xactions as $xaction) {
+      if ($xaction->getTransactionType() ==
+          PhabricatorPasteTransaction::TYPE_CREATE) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  protected function applyInitialEffects(
+    PhabricatorLiskDAO $object,
+    array $xactions) {
+
+    foreach ($xactions as $xaction) {
+      switch ($xaction->getTransactionType()) {
+        case PhabricatorPasteTransaction::TYPE_CREATE:
+          $data = $xaction->getNewValue();
+          $paste_file = PhabricatorFile::newFromFileData(
+            $data['text'],
+            array(
+              'name' => $data['title'],
+              'mime-type' => 'text/plain; charset=utf-8',
+              'authorPHID' => $this->getActor()->getPHID(),
+            ));
+          $object->setFilePHID($paste_file->getPHID());
+          break;
+      }
+    }
+  }
+
+  protected function supportsMail() {
+    return false;
+  }
+
+  protected function getMailTo(PhabricatorLiskDAO $object) {
+    return array(
+      $object->getAuthorPHID(),
+      $this->requireActor()->getPHID(),
+    );
+  }
+
+  protected function getMailCC(PhabricatorLiskDAO $object) {
+    return array();
+  }
+
+  protected function supportsFeed() {
+    return true;
+  }
+
+  protected function supportsSearch() {
+    return false;
+  }
+
+}

src/applications/paste/mail/PasteCreateMailReceiver.php

@@ -35,21 +35,34 @@ final class PasteCreateMailReceiver
     if (!$title) {
       $title = pht('Pasted via email.');
     }
-    $paste_file = PhabricatorFile::newFromFileData(
-      $mail->getCleanTextBody(),
-      array(
-        'name' => $title,
-        'mime-type' => 'text/plain; charset=utf-8',
-        'authorPHID' => $sender->getPHID(),
-      ));
+    $xactions = array();
+    $xactions[] = id(new PhabricatorPasteTransaction())
+      ->setTransactionType(PhabricatorPasteTransaction::TYPE_CREATE)
+      ->setNewValue(array(
+        'title' => $title,
+        'text' => $mail->getCleanTextBody()));
+    $xactions[] = id(new PhabricatorPasteTransaction())
+      ->setTransactionType(PhabricatorPasteTransaction::TYPE_TITLE)
+      ->setNewValue($title);
+    $xactions[] = id(new PhabricatorPasteTransaction())
+      ->setTransactionType(PhabricatorPasteTransaction::TYPE_LANGUAGE)
+      ->setNewValue(''); // auto-detect
+    $xactions[] = id(new PhabricatorPasteTransaction())
+      ->setTransactionType(PhabricatorTransactions::TYPE_VIEW_POLICY)
+      ->setNewValue(PhabricatorPolicies::POLICY_USER);
 
     $paste = id(new PhabricatorPaste())
-      ->setAuthorPHID($sender->getPHID())
-      ->setTitle($title)
-      ->setFilePHID($paste_file->getPHID())
-      ->setLanguage('') // auto-detect
-      ->setViewPolicy(PhabricatorPolicies::POLICY_USER)
-      ->save();
+      ->setAuthorPHID($sender->getPHID());
+    $content_source = PhabricatorContentSource::newForSource(
+      PhabricatorContentSource::SOURCE_EMAIL,
+      array(
+        'id' => $mail->getID(),
+      ));
+    $editor = id(new PhabricatorPasteEditor())
+      ->setActor($sender)
+      ->setContentSource($content_source)
+      ->setContinueOnNoEffect(true);
+    $xactions = $editor->applyTransactions($paste, $xactions);
 
     $mail->setRelatedPHID($paste->getPHID());
 

src/applications/paste/phid/PhabricatorPastePHIDTypePaste.php

@@ -38,7 +38,7 @@ final class PhabricatorPastePHIDTypePaste extends PhabricatorPHIDType {
       $name = $paste->getFullName();
 
       $handle->setName("P{$id}");
-      $handle->setFullName("P{$id}: {$name}");
+      $handle->setFullName($name);
       $handle->setURI("/P{$id}");
     }
   }

src/applications/paste/query/PhabricatorPasteQuery.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * @group paste
+ */
 final class PhabricatorPasteQuery
   extends PhabricatorCursorPagedPolicyAwareQuery {
 

src/applications/paste/query/PhabricatorPasteSearchEngine.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * @group paste
+ */
 final class PhabricatorPasteSearchEngine
   extends PhabricatorApplicationSearchEngine {
 

src/applications/paste/query/PhabricatorPasteTransactionQuery.php

@@ -0,0 +1,13 @@
+<?php
+
+/**
+ * @group paste
+ */
+final class PhabricatorPasteTransactionQuery
+  extends PhabricatorApplicationTransactionQuery {
+
+  public function getTemplateApplicationTransaction() {
+    return new PhabricatorPasteTransaction();
+  }
+
+}

src/applications/paste/storage/PhabricatorPaste.php

@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * @group paste
+ */
 final class PhabricatorPaste extends PhabricatorPasteDAO
   implements PhabricatorTokenReceiverInterface, PhabricatorPolicyInterface {
 

src/applications/paste/storage/PhabricatorPasteTransaction.php

@@ -0,0 +1,138 @@
+<?php
+
+/**
+ * @group paste
+ */
+final class PhabricatorPasteTransaction
+  extends PhabricatorApplicationTransaction {
+
+  const TYPE_CREATE = 'paste.create';
+  const TYPE_TITLE = 'paste.title';
+  const TYPE_LANGUAGE = 'paste.language';
+
+  public function getApplicationName() {
+    return 'pastebin';
+  }
+
+  public function getApplicationTransactionType() {
+    return PhabricatorPastePHIDTypePaste::TYPECONST;
+  }
+
+  public function getApplicationTransactionCommentObject() {
+    return new PhabricatorPasteTransactionComment();
+  }
+
+  public function getApplicationObjectTypeName() {
+    return pht('paste');
+  }
+
+  public function getRequiredHandlePHIDs() {
+    $phids = parent::getRequiredHandlePHIDs();
+
+    switch ($this->getTransactionType()) {
+      case self::TYPE_CREATE:
+        $phids[] = $this->getObjectPHID();
+        break;
+    }
+
+    return $phids;
+  }
+
+  public function shouldHide() {
+    $old = $this->getOldValue();
+    switch ($this->getTransactionType()) {
+      case self::TYPE_TITLE:
+      case self::TYPE_LANGUAGE:
+        return $old === null;
+    }
+    return parent::shouldHide();
+  }
+
+  public function getIcon() {
+    switch ($this->getTransactionType()) {
+      case self::TYPE_CREATE:
+        return 'create';
+        break;
+      case self::TYPE_TITLE:
+      case self::TYPE_LANGUAGE:
+        return 'edit';
+        break;
+    }
+    return parent::getIcon();
+  }
+
+  public function getTitle() {
+    $author_phid = $this->getAuthorPHID();
+    $object_phid = $this->getObjectPHID();
+
+    $old = $this->getOldValue();
+    $new = $this->getNewValue();
+
+    $type = $this->getTransactionType();
+    switch ($type) {
+      case PhabricatorPasteTransaction::TYPE_CREATE:
+        return pht(
+          '%s created "%s".',
+          $this->renderHandleLink($author_phid),
+          $this->renderHandleLink($object_phid));
+        break;
+      case PhabricatorPasteTransaction::TYPE_TITLE:
+        return pht(
+          '%s updated the paste\'s title to "%s".',
+          $this->renderHandleLink($author_phid),
+          $new);
+        break;
+      case PhabricatorPasteTransaction::TYPE_LANGUAGE:
+        return pht(
+          "%s updated the paste's language.",
+          $this->renderHandleLink($author_phid));
+        break;
+    }
+
+    return parent::getTitle();
+  }
+
+  public function getTitleForFeed() {
+    $author_phid = $this->getAuthorPHID();
+    $object_phid = $this->getObjectPHID();
+
+    $old = $this->getOldValue();
+    $new = $this->getNewValue();
+
+    $type = $this->getTransactionType();
+    switch ($type) {
+      case PhabricatorPasteTransaction::TYPE_CREATE:
+        return pht(
+          '%s created %s.',
+          $this->renderHandleLink($author_phid),
+          $this->renderHandleLink($object_phid));
+        break;
+      case PhabricatorPasteTransaction::TYPE_TITLE:
+        return pht(
+          '%s updated the title for %s.',
+          $this->renderHandleLink($author_phid),
+          $this->renderHandleLink($object_phid));
+        break;
+      case PhabricatorPasteTransaction::TYPE_LANGUAGE:
+        return pht(
+          '%s update the language for %s.',
+          $this->renderHandleLink($author_phid),
+          $this->renderHandleLink($object_phid));
+        break;
+    }
+
+    return parent::getTitleForFeed();
+  }
+
+  public function getColor() {
+    $old = $this->getOldValue();
+    $new = $this->getNewValue();
+
+    switch ($this->getTransactionType()) {
+      case PhabricatorPasteTransaction::TYPE_CREATE:
+        return PhabricatorTransactions::COLOR_GREEN;
+    }
+
+    return parent::getColor();
+  }
+}

src/applications/paste/storage/PhabricatorPasteTransactionComment.php

@@ -0,0 +1,20 @@
+<?php
+
+/**
+ * @group paste
+ */
+final class PhabricatorPasteTransactionComment
+  extends PhabricatorApplicationTransactionComment {
+
+  protected $lineNumber;
+  protected $lineLength;
+
+  public function getApplicationTransactionObject() {
+    return new PhabricatorPasteTransaction();
+  }
+
+  public function shouldUseMarkupCache($field) {
+    // Only cache submitted comments.
+    return ($this->getTransactionPHID() != null);
+  }
+}

src/infrastructure/storage/patch/PhabricatorBuiltinPatchList.php

@@ -1499,6 +1499,14 @@ final class PhabricatorBuiltinPatchList extends PhabricatorSQLPatchList {
         'type' => 'php',
         'name' => $this->getPatchPath('20130728.ponderxcomment.php'),
       ),
+      '20130801.pastexactions.sql' => array(
+        'type' => 'sql',
+        'name' => $this->getPatchPath('20130801.pastexactions.sql'),
+      ),
+      '20130801.pastexactions.php' => array(
+        'type' => 'php',
+        'name' => $this->getPatchPath('20130801.pastexactions.php'),
+      ),
     );
   }
 }