move DownloadStopped from download.common to interfaces

[tahoe-lafs/tahoe-lafs.git] / src / allmydata / interfaces.py

diff --git a/src/allmydata/interfaces.py b/src/allmydata/interfaces.py
index a25bb91ec64e14e620e736014617407624fb5dab..9536320dd9701044884ccf8809687fe01f45cab4 100644 (file)
--- a/src/allmydata/interfaces.py
+++ b/src/allmydata/interfaces.py
@@ -641,7 +641,7 @@ class IReadable(Interface):
         """
 
 
-class IWritable(Interface):
+class IWriteable(Interface):
     """
     I define methods that callers can use to update SDMF and MDMF
     mutable files on a Tahoe-LAFS grid.
@@ -784,7 +784,7 @@ class IFilesystemNode(Interface):
         read-only access with others, use get_readonly_uri().
         """
 
-    def get_write_uri(n):
+    def get_write_uri():
         """Return the URI string that can be used by others to get write
         access to this node, if it is writeable. If this is a read-only node,
         return None."""
@@ -1055,6 +1055,9 @@ class NotEnoughSharesError(Exception):
 class NoSharesError(Exception):
     """Download was unable to get any shares at all."""
 
+class DownloadStopped(Exception):
+    pass
+
 class UploadUnhappinessError(Exception):
     """Upload was unable to satisfy 'servers_of_happiness'"""