feat (DMS): DataManager.putAndRegister rejects too long filename

src/DIRAC/DataManagementSystem/Client/DataManager.py

@@ -8,6 +8,7 @@
 This module consists of DataManager and related classes.
 
 """
+
 # # imports
 from datetime import datetime, timedelta
 import fnmatch
@@ -25,6 +26,7 @@
 from DIRAC.Core.Utilities.ReturnValues import returnSingleResult
 from DIRAC.Core.Security.ProxyInfo import getProxyInfo
 from DIRAC.ConfigurationSystem.Client.Helpers.Operations import Operations
+from DIRAC.DataManagementSystem.Client import MAX_FILENAME_LENGTH
 from DIRAC.MonitoringSystem.Client.DataOperationSender import DataOperationSender
 from DIRAC.DataManagementSystem.Utilities.DMSHelpers import DMSHelpers
 from DIRAC.Resources.Catalog.FileCatalog import FileCatalog
@@ -432,6 +434,9 @@ def putAndRegister(self, lfn, fileName, diracSE, guid=None, path=None, checksum=
         'overwrite' removes file from the file catalogue and SE before attempting upload
         """
 
+        if len(os.path.basename(lfn)) >= MAX_FILENAME_LENGTH:
+            return S_ERROR(errno.ENAMETOOLONG, f"maximum {MAX_FILENAME_LENGTH} characters allowed")
+
         res = self.__hasAccess("addFile", lfn)
         if not res["OK"]:
             return res

src/DIRAC/DataManagementSystem/Client/FailoverTransfer.py

@@ -16,6 +16,8 @@
     temporary replica.
 
 """
+
+import errno
 import time
 
 from DIRAC import S_OK, S_ERROR, gLogger
@@ -107,6 +109,9 @@ def transferAndRegisterFile(
                     break
                 elif cmpError(result, EFCERR):
                     self.log.debug("transferAndRegisterFile: FC unavailable, retry")
+                elif cmpError(result, errno.ENAMETOOLONG):
+                    self.log.debug(f"transferAndRegisterFile: this file won't be uploaded: {result}")
+                    return result
                 elif retryUpload and len(destinationSEList) == 1:
                     self.log.debug("transferAndRegisterFile: Failed uploading to the only SE, retry")
                 else:

src/DIRAC/DataManagementSystem/Client/__init__.py

@@ -1,3 +1,6 @@
 """
    DIRAC.DataManagementSystem.Client package
 """
+
+# This should be the same as the FileName column of the DFC
+MAX_FILENAME_LENGTH = 128