phacility/phabricator · error · ConduitException

ERR_NOT_FOUND

ERR_NOT_FOUND

Error message

ERR_NOT_FOUND

What it means

Thrown by the differential.getcommitpaths Conduit method. It loads the revision from revision_id with a policy-filtered query; if none is found it throws ConduitException('ERR_NOT_FOUND') (documented as 'No such revision exists.') before listing the filenames of the latest diff's changesets.

Source

Thrown at src/applications/differential/conduit/DifferentialGetCommitPathsConduitAPIMethod.php:40

  protected function defineReturnType() {
    return 'nonempty list<string>';
  }

  protected function defineErrorTypes() {
    return array(
      'ERR_NOT_FOUND' => pht('No such revision exists.'),
    );
  }

  protected function execute(ConduitAPIRequest $request) {
    $id = $request->getValue('revision_id');

    $revision = id(new DifferentialRevisionQuery())
      ->setViewer($request->getUser())
      ->withIDs(array($id))
      ->executeOne();
    if (!$revision) {
      throw new ConduitException('ERR_NOT_FOUND');
    }

    $paths = array();
    $diff = id(new DifferentialDiff())->loadOneWhere(
      'revisionID = %d ORDER BY id DESC limit 1',
      $revision->getID());

    $diff->attachChangesets($diff->loadChangesets());

    foreach ($diff->getChangesets() as $changeset) {
      $paths[] = $changeset->getFilename();
    }

    return $paths;
  }

}

View on GitHub (pinned to 5720a38cfe)

Solutions

  1. Pass revision_id as a bare integer verified to exist (differential.query)
  2. Run with a token whose user can see the revision
  3. Treat ERR_NOT_FOUND as a skip condition in batch file-listing jobs
  4. Note the method reads the latest diff only - if you need another diff's paths use differential.getdiff with diff_id

Example fix

// before
$params = array('revision_id' => 'D33');

// after
$params = array('revision_id' => 33);
Defensive patterns

Strategy: try-catch

Validate before calling

$found = $client->callMethodSynchronous('differential.query',
  array('ids' => array((int)$rev_id)));
if (!$found) {
  return array(); // no revision, no paths
}

Try / catch

try {
  $paths = $client->callMethodSynchronous('differential.getcommitpaths',
    array('revision_id' => (int)$rev_id));
} catch (ConduitClientException $ex) {
  if ($ex->getErrorCode() === 'ERR_NOT_FOUND') {
    $paths = array();
  } else {
    throw $ex;
  }
}

Prevention

When it happens

Trigger: Calling differential.getcommitpaths with a nonexistent revision_id, a 'D'-prefixed or null value, or a revision hidden from the acting user.

Common situations: Tooling that enumerates touched files for commit hooks or changelogs using IDs harvested from older sources; bots without access to the revision's space; typos in configuration.

Understand the failure class

Background: 'Could not be found', 'does not exist', 'not found in database': the resource-not-found family when an ID, slug, key, or URI lookup comes back empty — this error's family across 20 libraries.

Related errors

AI-assisted analysis of phacility/phabricator@5720a38cfe (2026-08-21). Data as JSON: /api/errors/37bf498beccce5d6. Report an issue: GitHub.