[FileBackend] Added support for concurrent file write operations.
authorAaron <aschulz@wikimedia.org>
Wed, 11 Apr 2012 17:51:02 +0000 (10:51 -0700)
committerAaron Schulz <aschulz@wikimedia.org>
Wed, 9 May 2012 12:37:41 +0000 (05:37 -0700)
* FS backends work via popen() and basic shell commands.
* Swift backends use the custom SwiftCloudFiles async features.
* Refactored storagePathsRead()/storagePathsChanged() to normalize the paths
  for correct dependency detection in FileOpBatch.
* Cleaned up SwiftFileBackend exception handling to make debugging easier.
* Added a quick and dirty performance testing script.
* Updated unit tests to include a run with parallelize=implicit.
* Improved file test failure output a bit.

Change-Id: I6a5ed743c30c598e0dd7301dbdb3631c460332fd

includes/AutoLoader.php
includes/filerepo/backend/FSFileBackend.php
includes/filerepo/backend/FileBackend.php
includes/filerepo/backend/FileBackendMultiWrite.php
includes/filerepo/backend/FileBackendStore.php
includes/filerepo/backend/FileOp.php
includes/filerepo/backend/FileOpBatch.php [new file with mode: 0644]
includes/filerepo/backend/SwiftFileBackend.php
maintenance/fileOpPerfTest.php [new file with mode: 0644]
tests/phpunit/includes/filerepo/FileBackendTest.php

index 6710796..062fe8f 100644 (file)
@@ -514,14 +514,17 @@ $wgAutoloadLocalClasses = array(
        'FileBackendStoreShardDirIterator' => 'includes/filerepo/backend/FileBackendStore.php',
        'FileBackendStoreShardFileIterator' => 'includes/filerepo/backend/FileBackendStore.php',
        'FileBackendMultiWrite' => 'includes/filerepo/backend/FileBackendMultiWrite.php',
+       'FileBackendStoreOpHandle' => 'includes/filerepo/backend/FileBackendStore.php',
        'FSFileBackend' => 'includes/filerepo/backend/FSFileBackend.php',
        'FSFileBackendList' => 'includes/filerepo/backend/FSFileBackend.php',
        'FSFileBackendDirList' => 'includes/filerepo/backend/FSFileBackend.php',
        'FSFileBackendFileList' => 'includes/filerepo/backend/FSFileBackend.php',
+       'FSFileOpHandle' => 'includes/filerepo/backend/FSFileBackend.php',
        'SwiftFileBackend' => 'includes/filerepo/backend/SwiftFileBackend.php',
        'SwiftFileBackendList' => 'includes/filerepo/backend/SwiftFileBackend.php',
        'SwiftFileBackendDirList' => 'includes/filerepo/backend/SwiftFileBackend.php',
        'SwiftFileBackendFileList' => 'includes/filerepo/backend/SwiftFileBackend.php',
+       'SwiftFileOpHandle' => 'includes/filerepo/backend/SwiftFileBackend.php',
        'FileJournal' => 'includes/filerepo/backend/filejournal/FileJournal.php',
        'DBFileJournal' => 'includes/filerepo/backend/filejournal/DBFileJournal.php',
        'NullFileJournal' => 'includes/filerepo/backend/filejournal/FileJournal.php',
@@ -534,6 +537,7 @@ $wgAutoloadLocalClasses = array(
        'MySqlLockManager'=> 'includes/filerepo/backend/lockmanager/DBLockManager.php',
        'NullLockManager' => 'includes/filerepo/backend/lockmanager/LockManager.php',
        'FileOp' => 'includes/filerepo/backend/FileOp.php',
+       'FileOpBatch' => 'includes/filerepo/backend/FileOpBatch.php',
        'StoreFileOp' => 'includes/filerepo/backend/FileOp.php',
        'CopyFileOp' => 'includes/filerepo/backend/FileOp.php',
        'MoveFileOp' => 'includes/filerepo/backend/FileOp.php',
index d9a9c59..e105730 100644 (file)
@@ -191,22 +191,39 @@ class FSFileBackend extends FileBackendStore {
                        }
                }
 
-               $ok = copy( $params['src'], $dest );
-               // In some cases (at least over NFS), copy() returns true when it fails.
-               if ( !$ok || ( filesize( $params['src'] ) !== filesize( $dest ) ) ) {
-                       if ( $ok ) { // PHP bug
-                               unlink( $dest ); // remove broken file
-                               trigger_error( __METHOD__ . ": copy() failed but returned true." );
+               if ( !empty( $params['async'] ) ) { // deferred
+                       $cmd = implode( ' ', array( wfIsWindows() ? 'COPY' : 'cp',
+                               wfEscapeShellArg( $this->cleanPathSlashes( $params['src'] ) ),
+                               wfEscapeShellArg( $this->cleanPathSlashes( $dest ) )
+                       ) );
+                       $status->value = new FSFileOpHandle( $this, $params, 'Store', $cmd, $dest );
+               } else { // immediate write
+                       $ok = copy( $params['src'], $dest );
+                       // In some cases (at least over NFS), copy() returns true when it fails
+                       if ( !$ok || ( filesize( $params['src'] ) !== filesize( $dest ) ) ) {
+                               if ( $ok ) { // PHP bug
+                                       unlink( $dest ); // remove broken file
+                                       trigger_error( __METHOD__ . ": copy() failed but returned true." );
+                               }
+                               $status->fatal( 'backend-fail-store', $params['src'], $params['dst'] );
+                               return $status;
                        }
-                       $status->fatal( 'backend-fail-store', $params['src'], $params['dst'] );
-                       return $status;
+                       $this->chmod( $dest );
                }
 
-               $this->chmod( $dest );
-
                return $status;
        }
 
+       /**
+        * @see FSFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseStore( $errors, Status $status, array $params, $cmd ) {
+               if ( $errors !== '' && !( wfIsWindows() && $errors[0] === " " ) ) {
+                       $status->fatal( 'backend-fail-store', $params['src'], $params['dst'] );
+                       trigger_error( "$cmd\n$errors", E_USER_WARNING ); // command output
+               }
+       }
+
        /**
         * @see FileBackendStore::doCopyInternal()
         * @return Status
@@ -239,22 +256,39 @@ class FSFileBackend extends FileBackendStore {
                        }
                }
 
-               $ok = copy( $source, $dest );
-               // In some cases (at least over NFS), copy() returns true when it fails.
-               if ( !$ok || ( filesize( $source ) !== filesize( $dest ) ) ) {
-                       if ( $ok ) { // PHP bug
-                               unlink( $dest ); // remove broken file
-                               trigger_error( __METHOD__ . ": copy() failed but returned true." );
+               if ( !empty( $params['async'] ) ) { // deferred
+                       $cmd = implode( ' ', array( wfIsWindows() ? 'COPY' : 'cp',
+                               wfEscapeShellArg( $this->cleanPathSlashes( $source ) ),
+                               wfEscapeShellArg( $this->cleanPathSlashes( $dest ) )
+                       ) );
+                       $status->value = new FSFileOpHandle( $this, $params, 'Copy', $cmd, $dest );
+               } else { // immediate write
+                       $ok = copy( $source, $dest );
+                       // In some cases (at least over NFS), copy() returns true when it fails
+                       if ( !$ok || ( filesize( $source ) !== filesize( $dest ) ) ) {
+                               if ( $ok ) { // PHP bug
+                                       unlink( $dest ); // remove broken file
+                                       trigger_error( __METHOD__ . ": copy() failed but returned true." );
+                               }
+                               $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
+                               return $status;
                        }
-                       $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
-                       return $status;
+                       $this->chmod( $dest );
                }
 
-               $this->chmod( $dest );
-
                return $status;
        }
 
+       /**
+        * @see FSFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseCopy( $errors, Status $status, array $params, $cmd ) {
+               if ( $errors !== '' && !( wfIsWindows() && $errors[0] === " " ) ) {
+                       $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
+                       trigger_error( "$cmd\n$errors", E_USER_WARNING ); // command output
+               }
+       }
+
        /**
         * @see FileBackendStore::doMoveInternal()
         * @return Status
@@ -290,16 +324,34 @@ class FSFileBackend extends FileBackendStore {
                        }
                }
 
-               $ok = rename( $source, $dest );
-               clearstatcache(); // file no longer at source
-               if ( !$ok ) {
-                       $status->fatal( 'backend-fail-move', $params['src'], $params['dst'] );
-                       return $status;
+               if ( !empty( $params['async'] ) ) { // deferred
+                       $cmd = implode( ' ', array( wfIsWindows() ? 'MOVE' : 'mv',
+                               wfEscapeShellArg( $this->cleanPathSlashes( $source ) ),
+                               wfEscapeShellArg( $this->cleanPathSlashes( $dest ) )
+                       ) );
+                       $status->value = new FSFileOpHandle( $this, $params, 'Move', $cmd );
+               } else { // immediate write
+                       $ok = rename( $source, $dest );
+                       clearstatcache(); // file no longer at source
+                       if ( !$ok ) {
+                               $status->fatal( 'backend-fail-move', $params['src'], $params['dst'] );
+                               return $status;
+                       }
                }
 
                return $status;
        }
 
+       /**
+        * @see FSFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseMove( $errors, Status $status, array $params, $cmd ) {
+               if ( $errors !== '' && !( wfIsWindows() && $errors[0] === " " ) ) {
+                       $status->fatal( 'backend-fail-move', $params['src'], $params['dst'] );
+                       trigger_error( "$cmd\n$errors", E_USER_WARNING ); // command output
+               }
+       }
+
        /**
         * @see FileBackendStore::doDeleteInternal()
         * @return Status
@@ -320,15 +372,32 @@ class FSFileBackend extends FileBackendStore {
                        return $status; // do nothing; either OK or bad status
                }
 
-               $ok = unlink( $source );
-               if ( !$ok ) {
-                       $status->fatal( 'backend-fail-delete', $params['src'] );
-                       return $status;
+               if ( !empty( $params['async'] ) ) { // deferred
+                       $cmd = implode( ' ', array( wfIsWindows() ? 'DEL' : 'unlink',
+                               wfEscapeShellArg( $this->cleanPathSlashes( $source ) )
+                       ) );
+                       $status->value = new FSFileOpHandle( $this, $params, 'Copy', $cmd );
+               } else { // immediate write
+                       $ok = unlink( $source );
+                       if ( !$ok ) {
+                               $status->fatal( 'backend-fail-delete', $params['src'] );
+                               return $status;
+                       }
                }
 
                return $status;
        }
 
+       /**
+        * @see FSFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseDelete( $errors, Status $status, array $params, $cmd ) {
+               if ( $errors !== '' && !( wfIsWindows() && $errors[0] === " " ) ) {
+                       $status->fatal( 'backend-fail-delete', $params['src'] );
+                       trigger_error( "$cmd\n$errors", E_USER_WARNING ); // command output
+               }
+       }
+
        /**
         * @see FileBackendStore::doCreateInternal()
         * @return Status
@@ -355,17 +424,45 @@ class FSFileBackend extends FileBackendStore {
                        }
                }
 
-               $bytes = file_put_contents( $dest, $params['content'] );
-               if ( $bytes === false ) {
-                       $status->fatal( 'backend-fail-create', $params['dst'] );
-                       return $status;
+               if ( !empty( $params['async'] ) ) { // deferred
+                       $tempFile = TempFSFile::factory( 'create_', 'tmp' );
+                       if ( !$tempFile ) {
+                               $status->fatal( 'backend-fail-create', $params['dst'] );
+                               return $status;
+                       }
+                       $bytes = file_put_contents( $tempFile->getPath(), $params['content'] );
+                       if ( $bytes === false ) {
+                               $status->fatal( 'backend-fail-create', $params['dst'] );
+                               return $status;
+                       }
+                       $cmd = implode( ' ', array( wfIsWindows() ? 'COPY' : 'cp',
+                               wfEscapeShellArg( $this->cleanPathSlashes( $tempFile->getPath() ) ),
+                               wfEscapeShellArg( $this->cleanPathSlashes( $dest ) )
+                       ) );
+                       $status->value = new FSFileOpHandle( $this, $params, 'Create', $cmd, $dest );
+                       $tempFile->bind( $status->value );
+               } else { // immediate write
+                       $bytes = file_put_contents( $dest, $params['content'] );
+                       if ( $bytes === false ) {
+                               $status->fatal( 'backend-fail-create', $params['dst'] );
+                               return $status;
+                       }
+                       $this->chmod( $dest );
                }
 
-               $this->chmod( $dest );
-
                return $status;
        }
 
+       /**
+        * @see FSFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseCreate( $errors, Status $status, array $params, $cmd ) {
+               if ( $errors !== '' && !( wfIsWindows() && $errors[0] === " " ) ) {
+                       $status->fatal( 'backend-fail-create', $params['dst'] );
+                       trigger_error( "$cmd\n$errors", E_USER_WARNING ); // command output
+               }
+       }
+
        /**
         * @see FileBackendStore::doPrepareInternal()
         * @return Status
@@ -569,6 +666,40 @@ class FSFileBackend extends FileBackendStore {
                return false;
        }
 
+       /**
+        * @see FileBackendStore::doExecuteOpHandlesInternal()
+        * @return Array List of corresponding Status objects
+        */
+       protected function doExecuteOpHandlesInternal( array $fileOpHandles ) {
+               $statuses = array();
+
+               $pipes = array();
+               foreach ( $fileOpHandles as $index => $fileOpHandle ) {
+                       $pipes[$index] = popen( "{$fileOpHandle->cmd} 2>&1", 'r' );
+               }
+
+               $errs = array();
+               foreach ( $pipes as $index => $pipe ) {
+                       // Result will be empty on success in *NIX. On Windows,
+                       // it may be something like "        1 file(s) [copied|moved].".
+                       $errs[$index] = stream_get_contents( $pipe );
+                       fclose( $pipe );
+               }
+
+               foreach ( $fileOpHandles as $index => $fileOpHandle ) {
+                       $status = Status::newGood();
+                       $function = '_getResponse' . $fileOpHandle->call;
+                       $this->$function( $errs[$index], $status, $fileOpHandle->params, $fileOpHandle->cmd );
+                       $statuses[$index] = $status;
+                       if ( $status->isOK() && $fileOpHandle->chmodPath ) {
+                               $this->chmod( $fileOpHandle->chmodPath );
+                       }
+               }
+
+               clearstatcache(); // files changed
+               return $statuses;
+       }
+
        /**
         * Chmod a file, suppressing the warnings
         *
@@ -583,6 +714,16 @@ class FSFileBackend extends FileBackendStore {
                return $ok;
        }
 
+       /**
+        * Clean up directory separators for the given OS
+        *
+        * @param $path string FS path
+        * @return string
+        */
+       protected function cleanPathSlashes( $path ) {
+               return wfIsWindows() ? strtr( $path, '/', '\\' ) : $path;
+       }
+
        /**
         * Listen for E_WARNING errors and track whether any happen
         *
@@ -610,6 +751,22 @@ class FSFileBackend extends FileBackendStore {
        }
 }
 
+/**
+ * @see FileBackendStoreOpHandle
+ */
+class FSFileOpHandle extends FileBackendStoreOpHandle {
+       public $cmd; // string; shell command
+       public $chmodPath; // string; file to chmod
+
+       public function __construct( $backend, array $params, $call, $cmd, $chmodPath = null ) {
+               $this->backend = $backend;
+               $this->params = $params;
+               $this->call = $call;
+               $this->cmd = $cmd;
+               $this->chmodPath = $chmodPath;
+       }
+}
+
 /**
  * Wrapper around RecursiveDirectoryIterator/DirectoryIterator that
  * catches exception or does any custom behavoir that we may want.
index 6f2d291..24c6849 100644 (file)
@@ -60,6 +60,9 @@ abstract class FileBackend {
        protected $name; // string; unique backend name
        protected $wikiId; // string; unique wiki name
        protected $readOnly; // string; read-only explanation message
+       protected $parallelize; // string; when to do operations in parallel
+       protected $concurrency; // integer; how many operations can be done in parallel
+
        /** @var LockManager */
        protected $lockManager;
        /** @var FileJournal */
@@ -80,6 +83,9 @@ abstract class FileBackend {
         *                     Journals simply log changes to files stored in the backend.
         *     'readOnly'    : Write operations are disallowed if this is a non-empty string.
         *                     It should be an explanation for the backend being read-only.
+        *     'parallelize' : When to do file operations in parallel (when possible).
+        *                     Allowed values are "implicit", "explicit" and "off".
+        *     'concurrency' : How many file operations can be done in parallel.
         *
         * @param $config Array
         */
@@ -100,6 +106,12 @@ abstract class FileBackend {
                $this->readOnly = isset( $config['readOnly'] )
                        ? (string)$config['readOnly']
                        : '';
+               $this->parallelize = isset( $config['parallelize'] )
+                       ? (string)$config['parallelize']
+                       : 'off';
+               $this->concurrency = isset( $config['concurrency'] )
+                       ? (int)$config['concurrency']
+                       : 50;
        }
 
        /**
@@ -204,6 +216,7 @@ abstract class FileBackend {
         *                         This has no effect unless the 'force' flag is set.
         * 'nonJournaled'        : Don't log this operation batch in the file journal.
         *                         This limits the ability of recovery scripts.
+        * 'parallelize'         : Try to do operations in parallel when possible.
         *
         * Remarks on locking:
         * File system paths given to operations should refer to files that are
@@ -229,6 +242,16 @@ abstract class FileBackend {
                        unset( $opts['nonLocking'] );
                        unset( $opts['allowStale'] );
                }
+               $opts['concurrency'] = 1; // off
+               if ( $this->parallelize === 'implicit' ) {
+                       if ( !isset( $opts['parallelize'] ) || $opts['parallelize'] ) {
+                               $opts['concurrency'] = $this->concurrency;
+                       }
+               } elseif ( $this->parallelize === 'explicit' ) {
+                       if ( !empty( $opts['parallelize'] ) ) {
+                               $opts['concurrency'] = $this->concurrency;
+                       }
+               }
                return $this->doOperationsInternal( $ops, $opts );
        }
 
index 769aef6..4f9f0d9 100644 (file)
@@ -143,7 +143,7 @@ class FileBackendMultiWrite extends FileBackend {
                }
 
                // Actually attempt the operation batch...
-               $subStatus = FileOp::attemptBatch( $performOps, $opts, $this->fileJournal );
+               $subStatus = FileOpBatch::attempt( $performOps, $opts, $this->fileJournal );
 
                $success = array();
                $failCount = 0;
index 30a64e2..201f40f 100644 (file)
@@ -90,6 +90,9 @@ abstract class FileBackendStore extends FileBackend {
         *     content       : the raw file contents
         *     dst           : destination storage path
         *     overwrite     : overwrite any file that exists at the destination
+        *     async         : Status will be returned immediately if supported.
+        *                     If the status is OK, then its value field will be
+        *                     set to a FileBackendStoreOpHandle object.
         *
         * @param $params Array
         * @return Status
@@ -123,6 +126,9 @@ abstract class FileBackendStore extends FileBackend {
         *     src           : source path on disk
         *     dst           : destination storage path
         *     overwrite     : overwrite any file that exists at the destination
+        *     async         : Status will be returned immediately if supported.
+        *                     If the status is OK, then its value field will be
+        *                     set to a FileBackendStoreOpHandle object.
         *
         * @param $params Array
         * @return Status
@@ -155,6 +161,9 @@ abstract class FileBackendStore extends FileBackend {
         *     src           : source storage path
         *     dst           : destination storage path
         *     overwrite     : overwrite any file that exists at the destination
+        *     async         : Status will be returned immediately if supported.
+        *                     If the status is OK, then its value field will be
+        *                     set to a FileBackendStoreOpHandle object.
         *
         * @param $params Array
         * @return Status
@@ -182,6 +191,9 @@ abstract class FileBackendStore extends FileBackend {
         * $params include:
         *     src                 : source storage path
         *     ignoreMissingSource : do nothing if the source file does not exist
+        *     async               : Status will be returned immediately if supported.
+        *                           If the status is OK, then its value field will be
+        *                           set to a FileBackendStoreOpHandle object.
         *
         * @param $params Array
         * @return Status
@@ -210,6 +222,9 @@ abstract class FileBackendStore extends FileBackend {
         *     src           : source storage path
         *     dst           : destination storage path
         *     overwrite     : overwrite any file that exists at the destination
+        *     async         : Status will be returned immediately if supported.
+        *                     If the status is OK, then its value field will be
+        *                     set to a FileBackendStoreOpHandle object.
         *
         * @param $params Array
         * @return Status
@@ -231,6 +246,7 @@ abstract class FileBackendStore extends FileBackend {
         * @return Status
         */
        protected function doMoveInternal( array $params ) {
+               unset( $params['async'] ); // two steps, won't work here :)
                // Copy source to dest
                $status = $this->copyInternal( $params );
                if ( $status->isOK() ) {
@@ -907,7 +923,7 @@ abstract class FileBackendStore extends FileBackend {
                $this->primeContainerCache( $performOps );
 
                // Actually attempt the operation batch...
-               $subStatus = FileOp::attemptBatch( $performOps, $opts, $this->fileJournal );
+               $subStatus = FileOpBatch::attempt( $performOps, $opts, $this->fileJournal );
 
                // Merge errors into status fields
                $status->merge( $subStatus );
@@ -918,6 +934,41 @@ abstract class FileBackendStore extends FileBackend {
                return $status;
        }
 
+       /**
+        * Execute a list of FileBackendStoreOpHandle handles in parallel.
+        * The resulting Status object fields will correspond
+        * to the order in which the handles where given.
+        *
+        * @param $handles Array List of FileBackendStoreOpHandle objects
+        * @return Array Map of Status objects
+        */
+       final public function executeOpHandlesInternal( array $fileOpHandles ) {
+               wfProfileIn( __METHOD__ );
+               wfProfileIn( __METHOD__ . '-' . $this->name );
+               foreach ( $fileOpHandles as $fileOpHandle ) {
+                       if ( !( $fileOpHandle instanceof FileBackendStoreOpHandle ) ) {
+                               throw new MWException( "Given a non-FileBackendStoreOpHandle object." );
+                       } elseif ( $fileOpHandle->backend->getName() !== $this->getName() ) {
+                               throw new MWException( "Given a FileBackendStoreOpHandle for the wrong backend." );
+                       }
+               }
+               $res = $this->doExecuteOpHandlesInternal( $fileOpHandles );
+               wfProfileOut( __METHOD__ . '-' . $this->name );
+               wfProfileOut( __METHOD__ );
+               return $res;
+       }
+
+       /**
+        * @see FileBackendStore::executeOpHandlesInternal()
+        * @return Array List of corresponding Status objects
+        */
+       protected function doExecuteOpHandlesInternal( array $fileOpHandles ) {
+               foreach ( $fileOpHandles as $fileOpHandle ) { // OK if empty
+                       throw new MWException( "This backend supports no asynchronous operations." );
+               }
+               return array();
+       }
+
        /**
         * @see FileBackend::clearCache()
         */
@@ -1255,6 +1306,7 @@ abstract class FileBackendStore extends FileBackend {
        final protected function primeContainerCache( array $items ) {
                wfProfileIn( __METHOD__ );
                wfProfileIn( __METHOD__ . '-' . $this->name );
+
                $paths = array(); // list of storage paths
                $contNames = array(); // (cache key => resolved container name)
                // Get all the paths/containers from the items...
@@ -1285,6 +1337,7 @@ abstract class FileBackendStore extends FileBackend {
 
                // Populate the container process cache for the backend...
                $this->doPrimeContainerCache( array_filter( $contInfo, 'is_array' ) );
+
                wfProfileOut( __METHOD__ . '-' . $this->name );
                wfProfileOut( __METHOD__ );
        }
@@ -1345,6 +1398,7 @@ abstract class FileBackendStore extends FileBackend {
        final protected function primeFileCache( array $items ) {
                wfProfileIn( __METHOD__ );
                wfProfileIn( __METHOD__ . '-' . $this->name );
+
                $paths = array(); // list of storage paths
                $pathNames = array(); // (cache key => storage path)
                // Get all the paths/containers from the items...
@@ -1371,11 +1425,40 @@ abstract class FileBackendStore extends FileBackend {
                                $this->cache[$pathNames[$cacheKey]]['stat'] = $val;
                        }
                }
+
                wfProfileOut( __METHOD__ . '-' . $this->name );
                wfProfileOut( __METHOD__ );
        }
 }
 
+/**
+ * FileBackendStore helper class for performing asynchronous file operations.
+ *
+ * For example, calling FileBackendStore::createInternal() with the "async"
+ * param flag may result in a Status that contains this object as a value.
+ * This class is largely backend-specific and is mostly just "magic" to be
+ * passed to FileBackendStore::executeOpHandlesInternal().
+ */
+abstract class FileBackendStoreOpHandle {
+       /** @var Array */
+       public $params = array(); // params to caller functions
+       /** @var FileBackendStore */
+       public $backend;
+       /** @var Array */
+       public $resourcesToClose = array();
+
+       public $call; // string; name that identifies the function called
+
+       /**
+        * Close all open file handles
+        *
+        * @return void
+        */
+       public function closeResources() {
+               array_map( 'fclose', $this->resourcesToClose );
+       }
+}
+
 /**
  * FileBackendStore helper function to handle listings that span container shards.
  * Do not use this class from places outside of FileBackendStore.
index 8a2d428..b0ba6c2 100644 (file)
  */
 
 /**
- * Helper class for representing operations with transaction support.
- * Do not use this class from places outside FileBackend.
+ * FileBackend helper class for representing operations.
+ * Do naot use this class from places outside FileBackend.
  *
- * Methods called from attemptBatch() should avoid throwing exceptions at all costs.
- * FileOp objects should be lightweight in order to support large arrays in memory.
+ * Methods called from FileOpBatch::attempt() should avoid throwing
+ * exceptions at all costs. FileOp objects should be lightweight in order
+ * to support large arrays in memory and serialization.
  *
  * @ingroup FileBackend
  * @since 1.19
@@ -40,6 +41,7 @@ abstract class FileOp {
 
        protected $state = self::STATE_NEW; // integer
        protected $failed = false; // boolean
+       protected $async = false; // boolean
        protected $useLatest = true; // boolean
        protected $batchId; // string
 
@@ -51,10 +53,6 @@ abstract class FileOp {
        const STATE_CHECKED = 2;
        const STATE_ATTEMPTED = 3;
 
-       /* Timeout related parameters */
-       const MAX_BATCH_SIZE = 1000;
-       const TIME_LIMIT_SEC = 300; // 5 minutes
-
        /**
         * Build a new file operation transaction
         *
@@ -86,7 +84,7 @@ abstract class FileOp {
         * @param $batchId string
         * @return void
         */
-       final protected function setBatchId( $batchId ) {
+       final public function setBatchId( $batchId ) {
                $this->batchId = $batchId;
        }
 
@@ -96,130 +94,99 @@ abstract class FileOp {
         * @param $allowStale bool
         * @return void
         */
-       final protected function allowStaleReads( $allowStale ) {
+       final public function allowStaleReads( $allowStale ) {
                $this->useLatest = !$allowStale;
        }
 
        /**
-        * Attempt to perform a series of file operations.
-        * Callers are responsible for handling file locking.
+        * Get the value of the parameter with the given name
         *
-        * $opts is an array of options, including:
-        * 'force'        : Errors that would normally cause a rollback do not.
-        *                  The remaining operations are still attempted if any fail.
-        * 'allowStale'   : Don't require the latest available data.
-        *                  This can increase performance for non-critical writes.
-        *                  This has no effect unless the 'force' flag is set.
-        * 'nonJournaled' : Don't log this operation batch in the file journal.
+        * @param $name string
+        * @return mixed Returns null if the parameter is not set
+        */
+       final public function getParam( $name ) {
+               return isset( $this->params[$name] ) ? $this->params[$name] : null;
+       }
+
+       /**
+        * Check if this operation failed precheck() or attempt()
         *
-        * The resulting Status will be "OK" unless:
-        *     a) unexpected operation errors occurred (network partitions, disk full...)
-        *     b) significant operation errors occured and 'force' was not set
+        * @return bool
+        */
+       final public function failed() {
+               return $this->failed;
+       }
+
+       /**
+        * Get a new empty predicates array for precheck()
         *
-        * @param $performOps Array List of FileOp operations
-        * @param $opts Array Batch operation options
-        * @param $journal FileJournal Journal to log operations to
-        * @return Status
+        * @return Array
         */
-       final public static function attemptBatch(
-               array $performOps, array $opts, FileJournal $journal
-       ) {
-               $status = Status::newGood();
+       final public static function newPredicates() {
+               return array( 'exists' => array(), 'sha1' => array() );
+       }
 
-               $n = count( $performOps );
-               if ( $n > self::MAX_BATCH_SIZE ) {
-                       $status->fatal( 'backend-fail-batchsize', $n, self::MAX_BATCH_SIZE );
-                       return $status;
-               }
+       /**
+        * Get a new empty dependency tracking array for paths read/written to
+        *
+        * @return Array
+        */
+       final public static function newDependencies() {
+               return array( 'read' => array(), 'write' => array() );
+       }
 
-               $batchId = $journal->getTimestampedUUID();
-               $allowStale = !empty( $opts['allowStale'] );
-               $ignoreErrors = !empty( $opts['force'] );
-               $journaled = empty( $opts['nonJournaled'] );
-
-               $entries = array(); // file journal entries
-               $predicates = FileOp::newPredicates(); // account for previous op in prechecks
-               // Do pre-checks for each operation; abort on failure...
-               foreach ( $performOps as $index => $fileOp ) {
-                       $fileOp->setBatchId( $batchId );
-                       $fileOp->allowStaleReads( $allowStale );
-                       $oldPredicates = $predicates;
-                       $subStatus = $fileOp->precheck( $predicates ); // updates $predicates
-                       $status->merge( $subStatus );
-                       if ( $subStatus->isOK() ) {
-                               if ( $journaled ) { // journal log entry
-                                       $entries = array_merge( $entries,
-                                               self::getJournalEntries( $fileOp, $oldPredicates, $predicates ) );
-                               }
-                       } else { // operation failed?
-                               $status->success[$index] = false;
-                               ++$status->failCount;
-                               if ( !$ignoreErrors ) {
-                                       return $status; // abort
-                               }
-                       }
-               }
+       /**
+        * Update a dependency tracking array to account for this operation
+        *
+        * @param $deps Array Prior path reads/writes; format of FileOp::newPredicates()
+        * @return Array
+        */
+       final public function applyDependencies( array $deps ) {
+               $deps['read']  += array_fill_keys( $this->storagePathsRead(), 1 );
+               $deps['write'] += array_fill_keys( $this->storagePathsChanged(), 1 );
+               return $deps;
+       }
 
-               // Log the operations in file journal...
-               if ( count( $entries ) ) {
-                       $subStatus = $journal->logChangeBatch( $entries, $batchId );
-                       if ( !$subStatus->isOK() ) {
-                               return $subStatus; // abort
+       /**
+        * Check if this operation changes files listed in $paths
+        *
+        * @param $paths Array Prior path reads/writes; format of FileOp::newPredicates()
+        * @return boolean
+        */
+       final public function dependsOn( array $deps ) {
+               foreach ( $this->storagePathsChanged() as $path ) {
+                       if ( isset( $deps['read'][$path] ) || isset( $deps['write'][$path] ) ) {
+                               return true; // "output" or "anti" dependency
                        }
                }
-
-               if ( $ignoreErrors ) { // treat precheck() fatals as mere warnings
-                       $status->setResult( true, $status->value );
-               }
-
-               // Attempt each operation...
-               foreach ( $performOps as $index => $fileOp ) {
-                       if ( $fileOp->failed() ) {
-                               continue; // nothing to do
-                       }
-                       $subStatus = $fileOp->attempt();
-                       $status->merge( $subStatus );
-                       if ( $subStatus->isOK() ) {
-                               $status->success[$index] = true;
-                               ++$status->successCount;
-                       } else {
-                               $status->success[$index] = false;
-                               ++$status->failCount;
-                               // We can't continue (even with $ignoreErrors) as $predicates is wrong.
-                               // Log the remaining ops as failed for recovery...
-                               for ( $i = ($index + 1); $i < count( $performOps ); $i++ ) {
-                                       $performOps[$i]->logFailure( 'attempt_aborted' );
-                               }
-                               return $status; // bail out
+               foreach ( $this->storagePathsRead() as $path ) {
+                       if ( isset( $deps['write'][$path] ) ) {
+                               return true; // "flow" dependency
                        }
                }
-
-               return $status;
+               return false;
        }
 
        /**
-        * Get the file journal entries for a single file operation
+        * Get the file journal entries for this file operation
         *
-        * @param $fileOp FileOp
-        * @param $oPredicates Array Pre-op information about files
-        * @param $nPredicates Array Post-op information about files
+        * @param $oPredicates Array Pre-op info about files (format of FileOp::newPredicates)
+        * @param $nPredicates Array Post-op info about files (format of FileOp::newPredicates)
         * @return Array
         */
-       final protected static function getJournalEntries(
-               FileOp $fileOp, array $oPredicates, array $nPredicates
-       ) {
+       final public function getJournalEntries( array $oPredicates, array $nPredicates ) {
                $nullEntries = array();
                $updateEntries = array();
                $deleteEntries = array();
-               $pathsUsed = array_merge( $fileOp->storagePathsRead(), $fileOp->storagePathsChanged() );
+               $pathsUsed = array_merge( $this->storagePathsRead(), $this->storagePathsChanged() );
                foreach ( $pathsUsed as $path ) {
                        $nullEntries[] = array( // assertion for recovery
                                'op'      => 'null',
                                'path'    => $path,
-                               'newSha1' => $fileOp->fileSha1( $path, $oPredicates )
+                               'newSha1' => $this->fileSha1( $path, $oPredicates )
                        );
                }
-               foreach ( $fileOp->storagePathsChanged() as $path ) {
+               foreach ( $this->storagePathsChanged() as $path ) {
                        if ( $nPredicates['sha1'][$path] === false ) { // deleted
                                $deleteEntries[] = array(
                                        'op'      => 'delete',
@@ -228,7 +195,7 @@ abstract class FileOp {
                                );
                        } else { // created/updated
                                $updateEntries[] = array(
-                                       'op'      => $fileOp->fileExists( $path, $oPredicates ) ? 'update' : 'create',
+                                       'op'      => $this->fileExists( $path, $oPredicates ) ? 'update' : 'create',
                                        'path'    => $path,
                                        'newSha1' => $nPredicates['sha1'][$path]
                                );
@@ -237,34 +204,6 @@ abstract class FileOp {
                return array_merge( $nullEntries, $updateEntries, $deleteEntries );
        }
 
-       /**
-        * Get the value of the parameter with the given name
-        *
-        * @param $name string
-        * @return mixed Returns null if the parameter is not set
-        */
-       final public function getParam( $name ) {
-               return isset( $this->params[$name] ) ? $this->params[$name] : null;
-       }
-
-       /**
-        * Check if this operation failed precheck() or attempt()
-        *
-        * @return bool
-        */
-       final public function failed() {
-               return $this->failed;
-       }
-
-       /**
-        * Get a new empty predicates array for precheck()
-        *
-        * @return Array
-        */
-       final public static function newPredicates() {
-               return array( 'exists' => array(), 'sha1' => array() );
-       }
-
        /**
         * Check preconditions of the operation without writing anything
         *
@@ -284,7 +223,14 @@ abstract class FileOp {
        }
 
        /**
-        * Attempt the operation, backing up files as needed; this must be reversible
+        * @return Status
+        */
+       protected function doPrecheck( array &$predicates ) {
+               return Status::newGood();
+       }
+
+       /**
+        * Attempt the operation
         *
         * @return Status
         */
@@ -303,6 +249,25 @@ abstract class FileOp {
                return $status;
        }
 
+       /**
+        * @return Status
+        */
+       protected function doAttempt() {
+               return Status::newGood();
+       }
+
+       /**
+        * Attempt the operation in the background
+        *
+        * @return Status
+        */
+       final public function attemptAsync() {
+               $this->async = true;
+               $result = $this->attempt();
+               $this->async = false;
+               return $result;
+       }
+
        /**
         * Get the file operation parameters
         *
@@ -312,36 +277,48 @@ abstract class FileOp {
                return array( array(), array() );
        }
 
+       /**
+        * Adjust params to FileBackendStore internal file calls
+        *
+        * @param $params Array
+        * @return Array (required params list, optional params list)
+        */
+       protected function setFlags( array $params ) {
+               return array( 'async' => $this->async ) + $params;
+       }
+
        /**
         * Get a list of storage paths read from for this operation
         *
         * @return Array
         */
-       public function storagePathsRead() {
-               return array();
+       final public function storagePathsRead() {
+               return array_map( 'FileBackend::normalizeStoragePath', $this->doStoragePathsRead() );
        }
 
        /**
-        * Get a list of storage paths written to for this operation
-        *
+        * @see FileOp::storagePathsRead()
         * @return Array
         */
-       public function storagePathsChanged() {
+       protected function doStoragePathsRead() {
                return array();
        }
 
        /**
-        * @return Status
+        * Get a list of storage paths written to for this operation
+        *
+        * @return Array
         */
-       protected function doPrecheck( array &$predicates ) {
-               return Status::newGood();
+       final public function storagePathsChanged() {
+               return array_map( 'FileBackend::normalizeStoragePath', $this->doStoragePathsChanged() );
        }
 
        /**
-        * @return Status
+        * @see FileOp::storagePathsChanged()
+        * @return Array
         */
-       protected function doAttempt() {
-               return Status::newGood();
+       protected function doStoragePathsChanged() {
+               return array();
        }
 
        /**
@@ -425,13 +402,22 @@ abstract class FileOp {
                }
        }
 
+       /**
+        * Get the backend this operation is for
+        *
+        * @return FileBackendStore
+        */
+       public function getBackend() {
+               return $this->backend;
+       }
+
        /**
         * Log a file operation failure and preserve any temp files
         *
         * @param $action string
         * @return void
         */
-       final protected function logFailure( $action ) {
+       final public function logFailure( $action ) {
                $params = $this->params;
                $params['failedAction'] = $action;
                try {
@@ -482,12 +468,11 @@ class StoreFileOp extends FileOp {
        }
 
        protected function doAttempt() {
-               $status = Status::newGood();
                // Store the file at the destination
                if ( !$this->destSameAsSource ) {
-                       $status->merge( $this->backend->storeInternal( $this->params ) );
+                       return $this->backend->storeInternal( $this->setFlags( $this->params ) );
                }
-               return $status;
+               return Status::newGood();
        }
 
        protected function getSourceSha1Base36() {
@@ -500,7 +485,7 @@ class StoreFileOp extends FileOp {
                return $hash;
        }
 
-       public function storagePathsChanged() {
+       protected function doStoragePathsChanged() {
                return array( $this->params['dst'] );
        }
 }
@@ -540,19 +525,18 @@ class CreateFileOp extends FileOp {
        }
 
        protected function doAttempt() {
-               $status = Status::newGood();
-               // Create the file at the destination
                if ( !$this->destSameAsSource ) {
-                       $status->merge( $this->backend->createInternal( $this->params ) );
+                       // Create the file at the destination
+                       return $this->backend->createInternal( $this->setFlags( $this->params ) );
                }
-               return $status;
+               return Status::newGood();
        }
 
        protected function getSourceSha1Base36() {
                return wfBaseConvert( sha1( $this->params['content'] ), 16, 36, 31 );
        }
 
-       public function storagePathsChanged() {
+       protected function doStoragePathsChanged() {
                return array( $this->params['dst'] );
        }
 }
@@ -592,22 +576,21 @@ class CopyFileOp extends FileOp {
        }
 
        protected function doAttempt() {
-               $status = Status::newGood();
                // Do nothing if the src/dst paths are the same
                if ( $this->params['src'] !== $this->params['dst'] ) {
                        // Copy the file into the destination
                        if ( !$this->destSameAsSource ) {
-                               $status->merge( $this->backend->copyInternal( $this->params ) );
+                               return $this->backend->copyInternal( $this->setFlags( $this->params ) );
                        }
                }
-               return $status;
+               return Status::newGood();
        }
 
-       public function storagePathsRead() {
+       protected function doStoragePathsRead() {
                return array( $this->params['src'] );
        }
 
-       public function storagePathsChanged() {
+       protected function doStoragePathsChanged() {
                return array( $this->params['dst'] );
        }
 }
@@ -649,26 +632,25 @@ class MoveFileOp extends FileOp {
        }
 
        protected function doAttempt() {
-               $status = Status::newGood();
                // Do nothing if the src/dst paths are the same
                if ( $this->params['src'] !== $this->params['dst'] ) {
                        if ( !$this->destSameAsSource ) {
                                // Move the file into the destination
-                               $status->merge( $this->backend->moveInternal( $this->params ) );
+                               return $this->backend->moveInternal( $this->setFlags( $this->params ) );
                        } else {
                                // Just delete source as the destination needs no changes
                                $params = array( 'src' => $this->params['src'] );
-                               $status->merge( $this->backend->deleteInternal( $params ) );
+                               return $this->backend->deleteInternal( $this->setFlags( $params ) );
                        }
                }
-               return $status;
+               return Status::newGood();
        }
 
-       public function storagePathsRead() {
+       protected function doStoragePathsRead() {
                return array( $this->params['src'] );
        }
 
-       public function storagePathsChanged() {
+       protected function doStoragePathsChanged() {
                return array( $this->params['src'], $this->params['dst'] );
        }
 }
@@ -703,15 +685,14 @@ class DeleteFileOp extends FileOp {
        }
 
        protected function doAttempt() {
-               $status = Status::newGood();
                if ( $this->needsDelete ) {
                        // Delete the source file
-                       $status->merge( $this->backend->deleteInternal( $this->params ) );
+                       return $this->backend->deleteInternal( $this->setFlags( $this->params ) );
                }
-               return $status;
+               return Status::newGood();
        }
 
-       public function storagePathsChanged() {
+       protected function doStoragePathsChanged() {
                return array( $this->params['src'] );
        }
 }
diff --git a/includes/filerepo/backend/FileOpBatch.php b/includes/filerepo/backend/FileOpBatch.php
new file mode 100644 (file)
index 0000000..049f2c5
--- /dev/null
@@ -0,0 +1,223 @@
+<?php
+/**
+ * @file
+ * @ingroup FileBackend
+ * @author Aaron Schulz
+ */
+
+/**
+ * Helper class for representing batch file operations.
+ * Do not use this class from places outside FileBackend.
+ *
+ * Methods should avoid throwing exceptions at all costs.
+ *
+ * @ingroup FileBackend
+ * @since 1.20
+ */
+class FileOpBatch {
+       /* Timeout related parameters */
+       const MAX_BATCH_SIZE = 1000; // integer
+
+       /**
+        * Attempt to perform a series of file operations.
+        * Callers are responsible for handling file locking.
+        *
+        * $opts is an array of options, including:
+        * 'force'        : Errors that would normally cause a rollback do not.
+        *                  The remaining operations are still attempted if any fail.
+        * 'allowStale'   : Don't require the latest available data.
+        *                  This can increase performance for non-critical writes.
+        *                  This has no effect unless the 'force' flag is set.
+        * 'nonJournaled' : Don't log this operation batch in the file journal.
+        * 'concurrency'  : Try to do this many operations in parallel when possible.
+        *
+        * The resulting Status will be "OK" unless:
+        *     a) unexpected operation errors occurred (network partitions, disk full...)
+        *     b) significant operation errors occured and 'force' was not set
+        *
+        * @param $performOps Array List of FileOp operations
+        * @param $opts Array Batch operation options
+        * @param $journal FileJournal Journal to log operations to
+        * @return Status
+        */
+       public static function attempt( array $performOps, array $opts, FileJournal $journal ) {
+               wfProfileIn( __METHOD__ );
+               $status = Status::newGood();
+
+               $n = count( $performOps );
+               if ( $n > self::MAX_BATCH_SIZE ) {
+                       $status->fatal( 'backend-fail-batchsize', $n, self::MAX_BATCH_SIZE );
+                       wfProfileOut( __METHOD__ );
+                       return $status;
+               }
+
+               $batchId = $journal->getTimestampedUUID();
+               $allowStale = !empty( $opts['allowStale'] );
+               $ignoreErrors = !empty( $opts['force'] );
+               $journaled = empty( $opts['nonJournaled'] );
+               $maxConcurrency = isset( $opts['concurrency'] ) ? $opts['concurrency'] : 1;
+
+               $entries = array(); // file journal entry list
+               $predicates = FileOp::newPredicates(); // account for previous ops in prechecks
+               $curBatch = array(); // concurrent FileOp sub-batch accumulation
+               $curBatchDeps = FileOp::newDependencies(); // paths used in FileOp sub-batch
+               $pPerformOps = array(); // ordered list of concurrent FileOp sub-batches
+               $lastBackend = null; // last op backend name
+               // Do pre-checks for each operation; abort on failure...
+               foreach ( $performOps as $index => $fileOp ) {
+                       $backendName = $fileOp->getBackend()->getName();
+                       $fileOp->setBatchId( $batchId ); // transaction ID
+                       $fileOp->allowStaleReads( $allowStale ); // consistency level
+                       // Decide if this op can be done concurrently within this sub-batch
+                       // or if a new concurrent sub-batch must be started after this one...
+                       if ( $fileOp->dependsOn( $curBatchDeps )
+                               || count( $curBatch ) >= $maxConcurrency
+                               || ( $backendName !== $lastBackend && count( $curBatch ) )
+                       ) {
+                               $pPerformOps[] = $curBatch; // push this batch
+                               $curBatch = array(); // start a new sub-batch
+                               $curBatchDeps = FileOp::newDependencies();
+                       }
+                       $lastBackend = $backendName;
+                       $curBatch[$index] = $fileOp; // keep index
+                       // Update list of affected paths in this batch
+                       $curBatchDeps = $fileOp->applyDependencies( $curBatchDeps );
+                       // Simulate performing the operation...
+                       $oldPredicates = $predicates;
+                       $subStatus = $fileOp->precheck( $predicates ); // updates $predicates
+                       $status->merge( $subStatus );
+                       if ( $subStatus->isOK() ) {
+                               if ( $journaled ) { // journal log entries
+                                       $entries = array_merge( $entries,
+                                               $fileOp->getJournalEntries( $oldPredicates, $predicates ) );
+                               }
+                       } else { // operation failed?
+                               $status->success[$index] = false;
+                               ++$status->failCount;
+                               if ( !$ignoreErrors ) {
+                                       wfProfileOut( __METHOD__ );
+                                       return $status; // abort
+                               }
+                       }
+               }
+               // Push the last sub-batch
+               if ( count( $curBatch ) ) {
+                       $pPerformOps[] = $curBatch;
+               }
+
+               // Log the operations in the file journal...
+               if ( count( $entries ) ) {
+                       $subStatus = $journal->logChangeBatch( $entries, $batchId );
+                       if ( !$subStatus->isOK() ) {
+                               wfProfileOut( __METHOD__ );
+                               return $subStatus; // abort
+                       }
+               }
+
+               if ( $ignoreErrors ) { // treat precheck() fatals as mere warnings
+                       $status->setResult( true, $status->value );
+               }
+
+               // Attempt each operation (in parallel if allowed and possible)...
+               if ( count( $pPerformOps ) < count( $performOps ) ) {
+                       self::runBatchParallel( $pPerformOps, $status );
+               } else {
+                       self::runBatchSeries( $performOps, $status );
+               }
+
+               wfProfileOut( __METHOD__ );
+               return $status;
+       }
+
+       /**
+        * Attempt a list of file operations in series.
+        * This will abort remaining ops on failure.
+        *
+        * @param $performOps Array
+        * @param $status Status
+        * @return bool Success
+        */
+       protected static function runBatchSeries( array $performOps, Status $status ) {
+               foreach ( $performOps as $index => $fileOp ) {
+                       if ( $fileOp->failed() ) {
+                               continue; // nothing to do
+                       }
+                       $subStatus = $fileOp->attempt();
+                       $status->merge( $subStatus );
+                       if ( $subStatus->isOK() ) {
+                               $status->success[$index] = true;
+                               ++$status->successCount;
+                       } else {
+                               $status->success[$index] = false;
+                               ++$status->failCount;
+                               // We can't continue (even with $ignoreErrors) as $predicates is wrong.
+                               // Log the remaining ops as failed for recovery...
+                               for ( $i = ($index + 1); $i < count( $performOps ); $i++ ) {
+                                       $performOps[$i]->logFailure( 'attempt_aborted' );
+                               }
+                               return false; // bail out
+                       }
+               }
+               return true;
+       }
+
+       /**
+        * Attempt a list of file operations sub-batches in series.
+        *
+        * The operations *in* each sub-batch will be done in parallel.
+        * The caller is responsible for making sure the operations
+        * within any given sub-batch do not depend on each other.
+        * This will abort remaining ops on failure.
+        *
+        * @param $performOps Array
+        * @param $status Status
+        * @return bool Success
+        */
+       protected static function runBatchParallel( array $pPerformOps, Status $status ) {
+               $aborted = false;
+               foreach ( $pPerformOps as $performOpsBatch ) {
+                       if ( $aborted ) { // check batch op abort flag...
+                               // We can't continue (even with $ignoreErrors) as $predicates is wrong.
+                               // Log the remaining ops as failed for recovery...
+                               foreach ( $performOpsBatch as $i => $fileOp ) {
+                                       $performOpsBatch[$i]->logFailure( 'attempt_aborted' );
+                               }
+                               continue;
+                       }
+                       $statuses = array();
+                       $opHandles = array();
+                       // Get the backend; all sub-batch ops belong to a single backend
+                       $backend = reset( $performOpsBatch )->getBackend();
+                       // If attemptAsync() returns synchronously, it was either an
+                       // error Status or the backend just doesn't support async ops.
+                       foreach ( $performOpsBatch as $i => $fileOp ) {
+                               if ( !$fileOp->failed() ) { // failed => already has Status
+                                       $subStatus = $fileOp->attemptAsync();
+                                       if ( $subStatus->value instanceof FileBackendStoreOpHandle ) {
+                                               $opHandles[$i] = $subStatus->value; // deferred
+                                       } else {
+                                               $statuses[$i] = $subStatus; // done already
+                                       }
+                               }
+                       }
+                       // Try to do all the operations concurrently...
+                       $statuses = $statuses + $backend->executeOpHandlesInternal( $opHandles );
+                       // Marshall and merge all the responses (blocking)...
+                       foreach ( $performOpsBatch as $i => $fileOp ) {
+                               if ( !$fileOp->failed() ) { // failed => already has Status
+                                       $subStatus = $statuses[$i];
+                                       $status->merge( $subStatus );
+                                       if ( $subStatus->isOK() ) {
+                                               $status->success[$i] = true;
+                                               ++$status->successCount;
+                                       } else {
+                                               $status->success[$i] = false;
+                                               ++$status->failCount;
+                                               $aborted = true; // set abort flag; we can't continue
+                                       }
+                               }
+                       }
+               }
+               return $status;
+       }
+}
index f40c323..0def61f 100644 (file)
@@ -64,6 +64,9 @@ class SwiftFileBackend extends FileBackendStore {
         */
        public function __construct( array $config ) {
                parent::__construct( $config );
+               if ( !MWInit::classExists( 'CF_Constants' ) ) {
+                       throw new MWException( 'SwiftCloudFiles extension not installed.' );
+               }
                // Required settings
                $this->auth = new CF_Authentication(
                        $config['swiftUser'],
@@ -110,9 +113,8 @@ class SwiftFileBackend extends FileBackendStore {
                        $this->getContainer( $container );
                        return true; // container exists
                } catch ( NoSuchContainerException $e ) {
-               } catch ( InvalidResponseException $e ) {
-               } catch ( Exception $e ) { // some other exception?
-                       $this->logException( $e, __METHOD__, array( 'path' => $storagePath ) );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, null, __METHOD__, array( 'path' => $storagePath ) );
                }
 
                return false;
@@ -143,12 +145,8 @@ class SwiftFileBackend extends FileBackendStore {
                } catch ( NoSuchContainerException $e ) {
                        $status->fatal( 'backend-fail-create', $params['dst'] );
                        return $status;
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-                       return $status;
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                        return $status;
                }
 
@@ -167,20 +165,32 @@ class SwiftFileBackend extends FileBackendStore {
                        $obj->set_etag( md5( $params['content'] ) );
                        // Use the same content type as StreamFile for security
                        $obj->content_type = StreamFile::contentTypeFromPath( $params['dst'] );
-                       // Actually write the object in Swift
-                       $obj->write( $params['content'] );
+                       if ( !empty( $params['async'] ) ) { // deferred
+                               $handle = $obj->write_async( $params['content'] );
+                               $status->value = new SwiftFileOpHandle( $this, $params, 'Create', $handle );
+                       } else { // actually write the object in Swift
+                               $obj->write( $params['content'] );
+                       }
                } catch ( BadContentTypeException $e ) {
                        $status->fatal( 'backend-fail-contenttype', $params['dst'] );
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                }
 
                return $status;
        }
 
+       /**
+        * @see SwiftFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseCreate( CF_Async_Op $cfOp, Status $status, array $params ) {
+               try {
+                       $cfOp->getLastResponse();
+               } catch ( BadContentTypeException $e ) {
+                       $status->fatal( 'backend-fail-contenttype', $params['dst'] );
+               }
+       }
+
        /**
         * @see FileBackendStore::doStoreInternal()
         * @return Status
@@ -206,12 +216,8 @@ class SwiftFileBackend extends FileBackendStore {
                } catch ( NoSuchContainerException $e ) {
                        $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
                        return $status;
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-                       return $status;
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                        return $status;
                }
 
@@ -234,22 +240,44 @@ class SwiftFileBackend extends FileBackendStore {
                        $obj->set_etag( md5_file( $params['src'] ) );
                        // Use the same content type as StreamFile for security
                        $obj->content_type = StreamFile::contentTypeFromPath( $params['dst'] );
-                       // Actually write the object in Swift
-                       $obj->load_from_filename( $params['src'], True ); // calls $obj->write()
+                       if ( !empty( $params['async'] ) ) { // deferred
+                               wfSuppressWarnings();
+                               $fp = fopen( $params['src'], 'rb' );
+                               wfRestoreWarnings();
+                               if ( !$fp ) {
+                                       $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
+                               } else {
+                                       $handle = $obj->write_async( $fp, filesize( $params['src'] ), true );
+                                       $status->value = new SwiftFileOpHandle( $this, $params, 'Store', $handle );
+                                       $status->value->resourcesToClose[] = $fp;
+                               }
+                       } else { // actually write the object in Swift
+                               $obj->load_from_filename( $params['src'], true ); // calls $obj->write()
+                       }
                } catch ( BadContentTypeException $e ) {
                        $status->fatal( 'backend-fail-contenttype', $params['dst'] );
                } catch ( IOException $e ) {
                        $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                }
 
                return $status;
        }
 
+       /**
+        * @see SwiftFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseStore( CF_Async_Op $cfOp, Status $status, array $params ) {
+               try {
+                       $cfOp->getLastResponse();
+               } catch ( BadContentTypeException $e ) {
+                       $status->fatal( 'backend-fail-contenttype', $params['dst'] );
+               } catch ( IOException $e ) {
+                       $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
+               }
+       }
+
        /**
         * @see FileBackendStore::doCopyInternal()
         * @return Status
@@ -282,30 +310,104 @@ class SwiftFileBackend extends FileBackendStore {
                } catch ( NoSuchContainerException $e ) {
                        $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
                        return $status;
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-                       return $status;
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                        return $status;
                }
 
                // (b) Actually copy the file to the destination
                try {
-                       $sContObj->copy_object_to( $srcRel, $dContObj, $dstRel );
+                       if ( !empty( $params['async'] ) ) { // deferred
+                               $handle = $sContObj->copy_object_to_async( $srcRel, $dContObj, $dstRel );
+                               $status->value = new SwiftFileOpHandle( $this, $params, 'Copy', $handle );
+                       } else { // actually write the object in Swift
+                               $sContObj->copy_object_to( $srcRel, $dContObj, $dstRel );
+                       }
+               } catch ( NoSuchObjectException $e ) { // source object does not exist
+                       $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
+               }
+
+               return $status;
+       }
+
+       /**
+        * @see SwiftFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseCopy( CF_Async_Op $cfOp, Status $status, array $params ) {
+               try {
+                       $cfOp->getLastResponse();
                } catch ( NoSuchObjectException $e ) { // source object does not exist
                        $status->fatal( 'backend-fail-copy', $params['src'], $params['dst'] );
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               }
+       }
+
+       /**
+        * @see FileBackendStore::doMoveInternal()
+        * @return Status
+        */
+       protected function doMoveInternal( array $params ) {
+               $status = Status::newGood();
+
+               list( $srcCont, $srcRel ) = $this->resolveStoragePathReal( $params['src'] );
+               if ( $srcRel === null ) {
+                       $status->fatal( 'backend-fail-invalidpath', $params['src'] );
+                       return $status;
+               }
+
+               list( $dstCont, $dstRel ) = $this->resolveStoragePathReal( $params['dst'] );
+               if ( $dstRel === null ) {
+                       $status->fatal( 'backend-fail-invalidpath', $params['dst'] );
+                       return $status;
+               }
+
+               // (a) Check the source/destination containers and destination object
+               try {
+                       $sContObj = $this->getContainer( $srcCont );
+                       $dContObj = $this->getContainer( $dstCont );
+                       if ( empty( $params['overwrite'] ) &&
+                               $this->fileExists( array( 'src' => $params['dst'], 'latest' => 1 ) ) )
+                       {
+                               $status->fatal( 'backend-fail-alreadyexists', $params['dst'] );
+                               return $status;
+                       }
+               } catch ( NoSuchContainerException $e ) {
+                       $status->fatal( 'backend-fail-move', $params['src'], $params['dst'] );
+                       return $status;
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
+                       return $status;
+               }
+
+               // (b) Actually move the file to the destination
+               try {
+                       if ( !empty( $params['async'] ) ) { // deferred
+                               $handle = $sContObj->move_object_to_async( $srcRel, $dContObj, $dstRel );
+                               $status->value = new SwiftFileOpHandle( $this, $params, 'Move', $handle );
+                       } else { // actually write the object in Swift
+                               $sContObj->move_object_to( $srcRel, $dContObj, $dstRel );
+                       }
+               } catch ( NoSuchObjectException $e ) { // source object does not exist
+                       $status->fatal( 'backend-fail-move', $params['src'], $params['dst'] );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                }
 
                return $status;
        }
 
+       /**
+        * @see SwiftFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseMove( CF_Async_Op $cfOp, Status $status, array $params ) {
+               try {
+                       $cfOp->getLastResponse();
+               } catch ( NoSuchObjectException $e ) { // source object does not exist
+                       $status->fatal( 'backend-fail-move', $params['src'], $params['dst'] );
+               }
+       }
+
        /**
         * @see FileBackendStore::doDeleteInternal()
         * @return Status
@@ -321,23 +423,40 @@ class SwiftFileBackend extends FileBackendStore {
 
                try {
                        $sContObj = $this->getContainer( $srcCont );
-                       $sContObj->delete_object( $srcRel );
+                       if ( !empty( $params['async'] ) ) { // deferred
+                               $handle = $sContObj->delete_object_async( $srcRel );
+                               $status->value = new SwiftFileOpHandle( $this, $params, 'Delete', $handle );
+                       } else { // actually write the object in Swift
+                               $sContObj->delete_object( $srcRel );
+                       }
                } catch ( NoSuchContainerException $e ) {
                        $status->fatal( 'backend-fail-delete', $params['src'] );
                } catch ( NoSuchObjectException $e ) {
                        if ( empty( $params['ignoreMissingSource'] ) ) {
                                $status->fatal( 'backend-fail-delete', $params['src'] );
                        }
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                }
 
                return $status;
        }
 
+       /**
+        * @see SwiftFileBackend::doExecuteOpHandlesInternal()
+        */
+       protected function _getResponseDelete( CF_Async_Op $cfOp, Status $status, array $params ) {
+               try {
+                       $cfOp->getLastResponse();
+               } catch ( NoSuchContainerException $e ) {
+                       $status->fatal( 'backend-fail-delete', $params['src'] );
+               } catch ( NoSuchObjectException $e ) {
+                       if ( empty( $params['ignoreMissingSource'] ) ) {
+                               $status->fatal( 'backend-fail-delete', $params['src'] );
+                       }
+               }
+       }
+
        /**
         * @see FileBackendStore::doPrepareInternal()
         * @return Status
@@ -352,12 +471,8 @@ class SwiftFileBackend extends FileBackendStore {
                        return $status; // already exists
                } catch ( NoSuchContainerException $e ) {
                        // NoSuchContainerException thrown: container does not exist
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-                       return $status;
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                        return $status;
                }
 
@@ -372,12 +487,8 @@ class SwiftFileBackend extends FileBackendStore {
                                        array( $this->auth->username ) // write
                                ) );
                        }
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-                       return $status;
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                        return $status;
                }
 
@@ -408,11 +519,8 @@ class SwiftFileBackend extends FileBackendStore {
                                        // metadata, we can make use of that to avoid RTTs
                                        $contObj->mw_wasSecured = true; // avoid useless RTTs
                                }
-                       } catch ( InvalidResponseException $e ) {
-                               $status->fatal( 'backend-fail-connect', $this->name );
-                       } catch ( Exception $e ) { // some other exception?
-                               $status->fatal( 'backend-fail-internal', $this->name );
-                               $this->logException( $e, __METHOD__, $params );
+                       } catch ( CloudFilesException $e ) { // some other exception?
+                               $this->handleException( $e, $status, __METHOD__, $params );
                        }
                }
 
@@ -436,12 +544,8 @@ class SwiftFileBackend extends FileBackendStore {
                        $contObj = $this->getContainer( $fullCont, true );
                } catch ( NoSuchContainerException $e ) {
                        return $status; // ok, nothing to do
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-                       return $status;
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-internal', $this->name );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                        return $status;
                }
 
@@ -451,12 +555,10 @@ class SwiftFileBackend extends FileBackendStore {
                                $this->deleteContainer( $fullCont );
                        } catch ( NoSuchContainerException $e ) {
                                return $status; // race?
-                       } catch ( InvalidResponseException $e ) {
-                               $status->fatal( 'backend-fail-connect', $this->name );
-                               return $status;
-                       } catch ( Exception $e ) { // some other exception?
-                               $status->fatal( 'backend-fail-internal', $this->name );
-                               $this->logException( $e, __METHOD__, $params );
+                       } catch ( NonEmptyContainerException $e ) {
+                               return $status; // race? consistency delay?
+                       } catch ( CloudFilesException $e ) { // some other exception?
+                               $this->handleException( $e, $status, __METHOD__, $params );
                                return $status;
                        }
                }
@@ -487,11 +589,9 @@ class SwiftFileBackend extends FileBackendStore {
                        );
                } catch ( NoSuchContainerException $e ) {
                } catch ( NoSuchObjectException $e ) {
-               } catch ( InvalidResponseException $e ) {
+               } catch ( CloudFilesException $e ) { // some other exception?
                        $stat = null;
-               } catch ( Exception $e ) { // some other exception?
-                       $stat = null;
-                       $this->logException( $e, __METHOD__, $params );
+                       $this->handleException( $e, null, __METHOD__, $params );
                }
 
                return $stat;
@@ -546,9 +646,8 @@ class SwiftFileBackend extends FileBackendStore {
                        $obj = new CF_Object( $sContObj, $srcRel, false, false ); // skip HEAD request
                        $data = $obj->read( $this->headersFromParams( $params ) );
                } catch ( NoSuchContainerException $e ) {
-               } catch ( InvalidResponseException $e ) {
-               } catch ( Exception $e ) { // some other exception?
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, null, __METHOD__, $params );
                }
 
                return $data;
@@ -565,9 +664,9 @@ class SwiftFileBackend extends FileBackendStore {
                        return ( count( $container->list_objects( 1, null, $prefix ) ) > 0 );
                } catch ( NoSuchContainerException $e ) {
                        return false;
-               } catch ( InvalidResponseException $e ) {
-               } catch ( Exception $e ) { // some other exception?
-                       $this->logException( $e, __METHOD__, array( 'cont' => $fullCont, 'dir' => $dir ) );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, null, __METHOD__,
+                               array( 'cont' => $fullCont, 'dir' => $dir ) );
                }
 
                return null; // error
@@ -642,9 +741,9 @@ class SwiftFileBackend extends FileBackendStore {
                                }
                        }
                } catch ( NoSuchContainerException $e ) {
-               } catch ( InvalidResponseException $e ) {
-               } catch ( Exception $e ) { // some other exception?
-                       $this->logException( $e, __METHOD__, array( 'cont' => $fullCont, 'dir' => $dir ) );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, null, __METHOD__,
+                               array( 'cont' => $fullCont, 'dir' => $dir ) );
                }
 
                return $dirs;
@@ -685,9 +784,9 @@ class SwiftFileBackend extends FileBackendStore {
                        $after = end( $files ); // update last item
                        reset( $files ); // reset pointer
                } catch ( NoSuchContainerException $e ) {
-               } catch ( InvalidResponseException $e ) {
-               } catch ( Exception $e ) { // some other exception?
-                       $this->logException( $e, __METHOD__, array( 'cont' => $fullCont, 'dir' => $dir ) );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, null, __METHOD__,
+                               array( 'cont' => $fullCont, 'dir' => $dir ) );
                }
 
                return $files;
@@ -723,12 +822,8 @@ class SwiftFileBackend extends FileBackendStore {
                } catch ( NoSuchContainerException $e ) {
                        $status->fatal( 'backend-fail-stream', $params['src'] );
                        return $status;
-               } catch ( InvalidResponseException $e ) {
-                       $status->fatal( 'backend-fail-connect', $this->name );
-                       return $status;
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-stream', $params['src'] );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                        return $status;
                }
 
@@ -736,11 +831,8 @@ class SwiftFileBackend extends FileBackendStore {
                        $output = fopen( 'php://output', 'wb' );
                        $obj = new CF_Object( $cont, $srcRel, false, false ); // skip HEAD request
                        $obj->stream( $output, $this->headersFromParams( $params ) );
-               } catch ( InvalidResponseException $e ) { // 404? connection problem?
-                       $status->fatal( 'backend-fail-stream', $params['src'] );
-               } catch ( Exception $e ) { // some other exception?
-                       $status->fatal( 'backend-fail-stream', $params['src'] );
-                       $this->logException( $e, __METHOD__, $params );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, $status, __METHOD__, $params );
                }
 
                return $status;
@@ -779,11 +871,9 @@ class SwiftFileBackend extends FileBackendStore {
                        }
                } catch ( NoSuchContainerException $e ) {
                        $tmpFile = null;
-               } catch ( InvalidResponseException $e ) {
-                       $tmpFile = null;
-               } catch ( Exception $e ) { // some other exception?
+               } catch ( CloudFilesException $e ) { // some other exception?
                        $tmpFile = null;
-                       $this->logException( $e, __METHOD__, $params );
+                       $this->handleException( $e, null, __METHOD__, $params );
                }
 
                return $tmpFile;
@@ -813,6 +903,39 @@ class SwiftFileBackend extends FileBackendStore {
                return $hdrs;
        }
 
+       /**
+        * @see FileBackendStore::doExecuteOpHandlesInternal()
+        * @return Array List of corresponding Status objects
+        */
+       protected function doExecuteOpHandlesInternal( array $fileOpHandles ) {
+               $statuses = array();
+
+               $cfOps = array(); // list of CF_Async_Op objects
+               foreach ( $fileOpHandles as $index => $fileOpHandle ) {
+                       $cfOps[$index] = $fileOpHandle->cfOp;
+               }
+               $batch = new CF_Async_Op_Batch( $cfOps );
+
+               $cfOps = $batch->execute();
+               foreach ( $cfOps as $index => $cfOp ) {
+                       $status = Status::newGood();
+                       try { // catch exceptions; update status
+                               $function = '_getResponse' . $fileOpHandles[$index]->call;
+                               $this->$function( $cfOp, $status, $fileOpHandles[$index]->params );
+                       } catch ( CloudFilesException $e ) { // some other exception?
+                               $this->handleException( $e, $status,
+                                       __CLASS__ . ":$function", $fileOpHandles[$index]->params );
+                       }
+                       $statuses[$index] = $status;
+               }
+
+               foreach ( $fileOpHandles as $fileOpHandle ) {
+                       $fileOpHandle->closeResources();
+               }
+
+               return $statuses;
+       }
+
        /**
         * Set read/write permissions for a Swift container
         *
@@ -885,6 +1008,7 @@ class SwiftFileBackend extends FileBackendStore {
         * @param $container string Container name
         * @param $bypassCache bool Bypass all caches and load from Swift
         * @return CF_Container
+        * @throws NoSuchContainerException
         * @throws InvalidResponseException
         */
        protected function getContainer( $container, $bypassCache = false ) {
@@ -954,31 +1078,54 @@ class SwiftFileBackend extends FileBackendStore {
                                        $info['bytes']
                                );
                        }
-               } catch ( InvalidResponseException $e ) {
-               } catch ( Exception $e ) { // some other exception?
-                       $this->logException( $e, __METHOD__, array() );
+               } catch ( CloudFilesException $e ) { // some other exception?
+                       $this->handleException( $e, null, __METHOD__, array() );
                }
        }
 
        /**
-        * Log an unexpected exception for this backend
+        * Log an unexpected exception for this backend.
+        * This also sets the Status object to have a fatal error.
         *
         * @param $e Exception
+        * @param $status Status|null
         * @param $func string
         * @param $params Array
         * @return void
         */
-       protected function logException( Exception $e, $func, array $params ) {
+       protected function handleException( Exception $e, $status, $func, array $params ) {
+               if ( $status instanceof Status ) {
+                       if ( $e instanceof AuthenticationException ) {
+                               $status->fatal( 'backend-fail-connect', $this->name );
+                       } else {
+                               $status->fatal( 'backend-fail-internal', $this->name );
+                       }
+               }
+               if ( $e->getMessage() ) {
+                       trigger_error( "$func: " . $e->getMessage(), E_USER_WARNING );
+               }
                wfDebugLog( 'SwiftBackend',
                        get_class( $e ) . " in '{$func}' (given '" . FormatJson::encode( $params ) . "')" .
-                       ( $e instanceof InvalidResponseException
-                               ? ": {$e->getMessage()}"
-                               : ""
-                       )
+                       ( $e->getMessage() ? ": {$e->getMessage()}" : "" )
                );
        }
 }
 
+/**
+ * @see FileBackendStoreOpHandle
+ */
+class SwiftFileOpHandle extends FileBackendStoreOpHandle {
+       /** @var CF_Async_Op */
+       public $cfOp;
+
+       public function __construct( $backend, array $params, $call, CF_Async_Op $cfOp ) {
+               $this->backend = $backend;
+               $this->params = $params;
+               $this->call = $call;
+               $this->cfOp = $cfOp;
+       }
+}
+
 /**
  * SwiftFileBackend helper class to page through listings.
  * Swift also has a listing limit of 10,000 objects for sanity.
diff --git a/maintenance/fileOpPerfTest.php b/maintenance/fileOpPerfTest.php
new file mode 100644 (file)
index 0000000..b16bd95
--- /dev/null
@@ -0,0 +1,135 @@
+<?php
+/**
+ * Maintenance script to test fileop performance
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Maintenance
+ */
+
+$initialTime = microtime( true );
+$wgProfiler = array( 'class' => 'ProfilerSimpleText' );
+error_reporting( E_ALL );
+
+require_once( dirname( __FILE__ ) . '/Maintenance.php' );
+
+class TestFileOpPerformance extends Maintenance {
+       public function __construct() {
+               parent::__construct();
+               $this->mDescription = "Test fileop performance";
+               $this->addOption( 'b1', 'Backend 1', true, true );
+               $this->addOption( 'b2', 'Backend 2', false, true );
+               $this->addOption( 'srcdir', 'File source directory', true, true );
+               $this->addOption( 'maxfiles', 'Max files', false, true );
+       }
+
+       public function execute() {
+               $backend = FileBackendGroup::singleton()->get( $this->getOption( 'b1' ) );
+               $this->doPerfTest( $backend );
+
+               if ( $this->getOption( 'b2' ) ) {
+                       $backend = FileBackendGroup::singleton()->get( $this->getOption( 'b2' ) );
+                       $this->doPerfTest( $backend );
+               }
+
+               $profiler = Profiler::instance();
+               $profiler->setTemplated( true );
+               $profiler->logData(); // prints
+       }
+
+       protected function doPerfTest( FileBackend $backend ) {
+               $ops1 = array();
+               $ops2 = array();
+               $ops3 = array();
+               $ops4 = array();
+               $ops5 = array();
+
+               $baseDir = 'mwstore://' . $backend->getName() . '/testing-cont1';
+               $backend->prepare( array( 'dir' => $baseDir ) );
+
+               $dirname = $this->getOption( 'srcdir' );
+               $dir = opendir( $dirname );
+               if ( !$dir ) {
+                       return;
+               }
+
+               while ( $dir && ( $file = readdir( $dir ) ) !== false ) {
+                       if ( $file[0] != '.' ) {
+                               $this->output( "Using '$dirname/$file' in operations.\n" );
+                               $dst = $baseDir . '/' . wfBaseName( $file );
+                               $ops1[] = array( 'op' => 'store', 'src' => "$dirname/$file", 'dst' => $dst, 'overwrite' => 1);
+                               $ops2[] = array( 'op' => 'copy', 'src' => "$dst", 'dst' => "$dst-1", 'overwrite' => 1);
+                               $ops3[] = array( 'op' => 'move', 'src' => $dst, 'dst' => "$dst-2", 'overwrite' => 1);
+                               $ops4[] = array( 'op' => 'delete', 'src' => "$dst-1", 'overwrite' => 1 );
+                               $ops5[] = array( 'op' => 'delete', 'src' => "$dst-2", 'overwrite' => 1 );
+                       }
+                       if ( count( $ops1 ) >= $this->getOption( 'maxfiles', 20 ) ) {
+                               break; // enough
+                       }
+               }
+               closedir( $dir );
+               $this->output( "\n" );
+
+               $start = microtime( true );
+               $status = $backend->doOperations( $ops1, array( 'force' => 1 ) );
+               $e = ( microtime( true ) - $start ) * 1000;
+               if ( $status->getErrorsArray() ) {
+                       print_r( $status->getErrorsArray() );
+                       exit(0);
+               }
+               $this->output( $backend->getName() . ": Stored " . count( $ops1 ) . " files in $e ms.\n" );
+
+               $start = microtime( true );
+               $backend->doOperations( $ops2, array( 'force' => 1 ) );
+               $e = ( microtime( true ) - $start ) * 1000;
+               if ( $status->getErrorsArray() ) {
+                       print_r( $status->getErrorsArray() );
+                       exit(0);
+               }
+               $this->output( $backend->getName() . ": Copied " . count( $ops2 ) . " files in $e ms.\n" );
+
+               $start = microtime( true );
+               $backend->doOperations( $ops3, array( 'force' => 1 ) );
+               $e = ( microtime( true ) - $start ) * 1000;
+               if ( $status->getErrorsArray() ) {
+                       print_r( $status->getErrorsArray() );
+                       exit(0);
+               }
+               $this->output( $backend->getName() . ": Moved " . count( $ops3 ) . " files in $e ms.\n" );
+
+               $start = microtime( true );
+               $backend->doOperations( $ops4, array( 'force' => 1 ) );
+               $e = ( microtime( true ) - $start ) * 1000;
+               if ( $status->getErrorsArray() ) {
+                       print_r( $status->getErrorsArray() );
+                       exit(0);
+               }
+               $this->output( $backend->getName() . ": Deleted " . count( $ops4 ) . " files in $e ms.\n" );
+
+               $start = microtime( true );
+               $backend->doOperations( $ops5, array( 'force' => 1 ) );
+               $e = ( microtime( true ) - $start ) * 1000;
+               if ( $status->getErrorsArray() ) {
+                       print_r( $status->getErrorsArray() );
+                       exit(0);
+               }
+               $this->output( $backend->getName() . ": Deleted " . count( $ops5 ) . " files in $e ms.\n" );
+       }
+}
+
+$maintClass = "TestFileOpPerformance";
+require_once( RUN_MAINTENANCE_IF_MAIN );
index 9c36a57..8da54e2 100644 (file)
@@ -35,6 +35,7 @@ class FileBackendTest extends MediaWikiTestCase {
                        $this->singleBackend = new FSFileBackend( array(
                                'name'        => 'localtesting',
                                'lockManager' => 'fsLockManager',
+                               #'parallelize' => 'implicit',
                                'containerPaths' => array(
                                        'unittest-cont1' => "{$tmpPrefix}-localtesting-cont1",
                                        'unittest-cont2' => "{$tmpPrefix}-localtesting-cont2" )
@@ -43,6 +44,7 @@ class FileBackendTest extends MediaWikiTestCase {
                $this->multiBackend = new FileBackendMultiWrite( array(
                        'name'        => 'localtesting',
                        'lockManager' => 'fsLockManager',
+                       'parallelize' => 'implicit',
                        'backends'    => array(
                                array(
                                        'name'          => 'localmutlitesting1',
@@ -220,9 +222,9 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->doOperation( $op );
 
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Store from $source to $dest succeeded without warnings ($backendName)." );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertEquals( true, $status->isOK(),
                        "Store from $source to $dest succeeded ($backendName)." );
                $this->assertEquals( array( 0 => true ), $status->success,
                        "Store from $source to $dest has proper 'success' field in Status ($backendName)." );
@@ -297,7 +299,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->doOperation(
                        array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of file at $source succeeded ($backendName)." );
 
                if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
@@ -306,7 +308,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->doOperation( $op );
 
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Copy from $source to $dest succeeded without warnings ($backendName)." );
                $this->assertEquals( true, $status->isOK(),
                        "Copy from $source to $dest succeeded ($backendName)." );
@@ -385,7 +387,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->doOperation(
                        array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of file at $source succeeded ($backendName)." );
 
                if ( isset( $op['overwrite'] ) || isset( $op['overwriteSame'] ) ) {
@@ -393,7 +395,7 @@ class FileBackendTest extends MediaWikiTestCase {
                }
 
                $status = $this->backend->doOperation( $op );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Move from $source to $dest succeeded without warnings ($backendName)." );
                $this->assertEquals( true, $status->isOK(),
                        "Move from $source to $dest succeeded ($backendName)." );
@@ -473,13 +475,13 @@ class FileBackendTest extends MediaWikiTestCase {
                if ( $withSource ) {
                        $status = $this->backend->doOperation(
                                array( 'op' => 'create', 'content' => 'blahblah', 'dst' => $source ) );
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Creation of file at $source succeeded ($backendName)." );
                }
 
                $status = $this->backend->doOperation( $op );
                if ( $okStatus ) {
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Deletion of file at $source succeeded without warnings ($backendName)." );
                        $this->assertEquals( true, $status->isOK(),
                                "Deletion of file at $source succeeded ($backendName)." );
@@ -555,13 +557,13 @@ class FileBackendTest extends MediaWikiTestCase {
                if ( $alreadyExists ) {
                        $status = $this->backend->doOperation(
                                array( 'op' => 'create', 'content' => $oldText, 'dst' => $dest ) );
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Creation of file at $dest succeeded ($backendName)." );
                }
 
                $status = $this->backend->doOperation( $op );
                if ( $okStatus ) {
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Creation of file at $dest succeeded without warnings ($backendName)." );
                        $this->assertEquals( true, $status->isOK(),
                                "Creation of file at $dest succeeded ($backendName)." );
@@ -685,7 +687,7 @@ class FileBackendTest extends MediaWikiTestCase {
                }
                $status = $this->backend->doOperations( $ops );
 
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of source files succeeded ($backendName)." );
 
                $dest = $params['dst'];
@@ -702,7 +704,7 @@ class FileBackendTest extends MediaWikiTestCase {
                // Combine the files into one
                $status = $this->backend->concatenate( $params );
                if ( $okStatus ) {
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Creation of concat file at $dest succeeded without warnings ($backendName)." );
                        $this->assertEquals( true, $status->isOK(),
                                "Creation of concat file at $dest succeeded ($backendName)." );
@@ -802,7 +804,7 @@ class FileBackendTest extends MediaWikiTestCase {
                if ( $alreadyExists ) {
                        $this->prepare( array( 'dir' => dirname( $path ) ) );
                        $status = $this->backend->create( array( 'dst' => $path, 'content' => $content ) );
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Creation of file at $path succeeded ($backendName)." );
 
                        $size = $this->backend->getFileSize( array( 'src' => $path ) );
@@ -864,7 +866,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->doOperation(
                        array( 'op' => 'create', 'content' => $content, 'dst' => $source ) );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of file at $source succeeded ($backendName)." );
                $this->assertEquals( true, $status->isOK(),
                        "Creation of file at $source succeeded with OK status ($backendName)." );
@@ -909,7 +911,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->doOperation(
                        array( 'op' => 'create', 'content' => $content, 'dst' => $source ) );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of file at $source succeeded ($backendName)." );
 
                $tmpFile = $this->backend->getLocalCopy( array( 'src' => $source ) );
@@ -952,7 +954,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->doOperation(
                        array( 'op' => 'create', 'content' => $content, 'dst' => $source ) );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of file at $source succeeded ($backendName)." );
 
                $tmpFile = $this->backend->getLocalReference( array( 'src' => $source ) );
@@ -1001,7 +1003,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->prepare( array( 'dir' => dirname( $path ) ) );
                if ( $isOK ) {
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Preparing dir $path succeeded without warnings ($backendName)." );
                        $this->assertEquals( true, $status->isOK(),
                                "Preparing dir $path succeeded ($backendName)." );
@@ -1012,7 +1014,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->clean( array( 'dir' => dirname( $path ) ) );
                if ( $isOK ) {
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Cleaning dir $path succeeded without warnings ($backendName)." );
                        $this->assertEquals( true, $status->isOK(),
                                "Cleaning dir $path succeeded ($backendName)." );
@@ -1052,7 +1054,7 @@ class FileBackendTest extends MediaWikiTestCase {
                );
                foreach ( $dirs as $dir ) {
                        $status = $this->prepare( array( 'dir' => $dir ) );
-                       $this->assertEquals( array(), $status->errors,
+                       $this->assertGoodStatus( $status,
                                "Preparing dir $dir succeeded without warnings ($backendName)." );
                }
 
@@ -1065,7 +1067,7 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $status = $this->backend->clean(
                        array( 'dir' => "$base/unittest-cont1", 'recursive' => 1 ) );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Recursive cleaning of dir $dir succeeded without warnings ($backendName)." );
 
                foreach ( $dirs as $dir ) {
@@ -1089,15 +1091,23 @@ class FileBackendTest extends MediaWikiTestCase {
 
                $this->backend = $this->singleBackend;
                $this->tearDownFiles();
-               $this->doTestDoOperationsFailing();
+               $this->doTestDoOperations2();
                $this->tearDownFiles();
 
                $this->backend = $this->multiBackend;
                $this->tearDownFiles();
+               $this->doTestDoOperations2();
+               $this->tearDownFiles();
+
+               $this->backend = $this->singleBackend;
+               $this->tearDownFiles();
                $this->doTestDoOperationsFailing();
                $this->tearDownFiles();
 
-               // @TODO: test some cases where the ops should fail
+               $this->backend = $this->multiBackend;
+               $this->tearDownFiles();
+               $this->doTestDoOperationsFailing();
+               $this->tearDownFiles();
        }
 
        private function doTestDoOperations() {
@@ -1148,7 +1158,7 @@ class FileBackendTest extends MediaWikiTestCase {
                        // Does nothing
                ) );
 
-               $this->assertEquals( array(), $status->errors, "Operation batch succeeded" );
+               $this->assertGoodStatus( $status, "Operation batch succeeded" );
                $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
                $this->assertEquals( 13, count( $status->success ),
                        "Operation batch has correct success array" );
@@ -1173,7 +1183,94 @@ class FileBackendTest extends MediaWikiTestCase {
                        "Correct file SHA-1 of $fileC" );
        }
 
-       private function doTestDoOperationsFailing() {
+       // concurrency orientated
+       function doTestDoOperations2() {
+               $base = $this->baseStorePath();
+
+               $fileAContents = '3tqtmoeatmn4wg4qe-mg3qt3 tq';
+               $fileBContents = 'g-jmq3gpqgt3qtg q3GT ';
+               $fileCContents = 'eigna[ogmewt 3qt g3qg flew[ag';
+
+               $tmpNameA = TempFSFile::factory( "unittests_", 'txt' )->getPath();
+               file_put_contents( $tmpNameA, $fileAContents );
+               $tmpNameB = TempFSFile::factory( "unittests_", 'txt' )->getPath();
+               file_put_contents( $tmpNameB, $fileBContents );
+               $tmpNameC = TempFSFile::factory( "unittests_", 'txt' )->getPath();
+               file_put_contents( $tmpNameC, $fileCContents );
+
+               $this->filesToPrune[] = $tmpNameA; # avoid file leaking
+               $this->filesToPrune[] = $tmpNameB; # avoid file leaking
+               $this->filesToPrune[] = $tmpNameC; # avoid file leaking
+
+               $fileA = "$base/unittest-cont1/a/b/fileA.txt";
+               $fileB = "$base/unittest-cont1/a/b/fileB.txt";
+               $fileC = "$base/unittest-cont1/a/b/fileC.txt";
+               $fileD = "$base/unittest-cont1/a/b/fileD.txt";
+
+               $this->prepare( array( 'dir' => dirname( $fileA ) ) );
+               $this->backend->create( array( 'dst' => $fileA, 'content' => $fileAContents ) );
+               $this->prepare( array( 'dir' => dirname( $fileB ) ) );
+               $this->prepare( array( 'dir' => dirname( $fileC ) ) );
+               $this->prepare( array( 'dir' => dirname( $fileD ) ) );
+
+               $status = $this->backend->doOperations( array(
+                       array( 'op' => 'store', 'src' => $tmpNameA, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       array( 'op' => 'store', 'src' => $tmpNameB, 'dst' => $fileB, 'overwrite' => 1 ),
+                       array( 'op' => 'store', 'src' => $tmpNameC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty> (file:<orginal contents>)
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<A>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileD, 'overwrite' => 1 ),
+                       // Now: A:<A>, B:<B>, C:<empty>, D:<A>
+                       array( 'op' => 'move', 'src' => $fileB, 'dst' => $fileC ),
+                       // Now: A:<A>, B:<empty>, C:<B>, D:<A>
+                       array( 'op' => 'move', 'src' => $fileD, 'dst' => $fileA, 'overwriteSame' => 1 ),
+                       // Now: A:<A>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileA, 'overwrite' => 1 ),
+                       // Now: A:<B>, B:<empty>, C:<empty>, D:<empty>
+                       array( 'op' => 'copy', 'src' => $fileA, 'dst' => $fileC ),
+                       // Now: A:<B>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'move', 'src' => $fileA, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Now: A:<empty>, B:<empty>, C:<B>, D:<empty>
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'copy', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwrite' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'move', 'src' => $fileC, 'dst' => $fileC, 'overwriteSame' => 1 ),
+                       // Does nothing
+                       array( 'op' => 'null' ),
+                       // Does nothing
+               ) );
+
+               $this->assertGoodStatus( $status, "Operation batch succeeded" );
+               $this->assertEquals( true, $status->isOK(), "Operation batch succeeded" );
+               $this->assertEquals( 16, count( $status->success ),
+                       "Operation batch has correct success array" );
+
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileA ) ),
+                       "File does not exist at $fileA" );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileB ) ),
+                       "File does not exist at $fileB" );
+               $this->assertEquals( false, $this->backend->fileExists( array( 'src' => $fileD ) ),
+                       "File does not exist at $fileD" );
+
+               $this->assertEquals( true, $this->backend->fileExists( array( 'src' => $fileC ) ),
+                       "File exists at $fileC" );
+               $this->assertEquals( $fileBContents,
+                       $this->backend->getFileContents( array( 'src' => $fileC ) ),
+                       "Correct file contents of $fileC" );
+               $this->assertEquals( strlen( $fileBContents ),
+                       $this->backend->getFileSize( array( 'src' => $fileC ) ),
+                       "Correct file size of $fileC" );
+               $this->assertEquals( wfBaseConvert( sha1( $fileBContents ), 16, 36, 31 ),
+                       $this->backend->getFileSha1Base36( array( 'src' => $fileC ) ),
+                       "Correct file SHA-1 of $fileC" );
+       }
+
+       function doTestDoOperationsFailing() {
                $base = $this->baseStorePath();
 
                $fileA = "$base/unittest-cont2/a/b/fileA.txt";
@@ -1275,7 +1372,7 @@ class FileBackendTest extends MediaWikiTestCase {
                        $ops[] = array( 'op' => 'create', 'content' => 'xxy', 'dst' => $file );
                }
                $status = $this->backend->doOperations( $ops );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of files succeeded ($backendName)." );
                $this->assertEquals( true, $status->isOK(),
                        "Creation of files succeeded with OK status ($backendName)." );
@@ -1428,7 +1525,7 @@ class FileBackendTest extends MediaWikiTestCase {
                        $ops[] = array( 'op' => 'create', 'content' => 'xxy', 'dst' => $file );
                }
                $status = $this->backend->doOperations( $ops );
-               $this->assertEquals( array(), $status->errors,
+               $this->assertGoodStatus( $status,
                        "Creation of files succeeded ($backendName)." );
                $this->assertEquals( true, $status->isOK(),
                        "Creation of files succeeded with OK status ($backendName)." );
@@ -1654,11 +1751,11 @@ class FileBackendTest extends MediaWikiTestCase {
        }
 
        private function recursiveClean( $dir ) {
-               do {
-                       if ( !$this->backend->clean( array( 'dir' => $dir ) )->isOK() ) {
-                               break;
-                       }
-               } while ( $dir = FileBackend::parentStoragePath( $dir ) );
+               $this->backend->clean( array( 'dir' => $dir, 'recursive' => 1 ) );
+       }
+
+       function assertGoodStatus( $status, $msg ) {
+               $this->assertEquals( print_r( array(), 1 ), print_r( $status->errors, 1 ), $msg );
        }
 
        function tearDown() {