make current upload/download status objects available from the client

src/allmydata/client.py

@@ -280,3 +280,10 @@ class Client(node.Node, testutil.PollMixin):
         uploader = self.getServiceNamed("uploader")
         return uploader.upload(uploadable)
 
+    def list_uploads(self):
+        uploader = self.getServiceNamed("uploader")
+        return uploader.list_uploads()
+
+    def list_downloads(self):
+        downloader = self.getServiceNamed("downloader")
+        return downloader.list_downloads()

src/allmydata/download.py

@@ -871,3 +871,5 @@ class Downloader(service.MultiService):
         return self.download(uri, FileHandle(filehandle))
 
 
+    def list_downloads(self):
+        return self._all_downloads.keys()

src/allmydata/interfaces.py

@@ -1374,6 +1374,14 @@ class IClient(Interface):
                  IDirectoryNode-providing instances, like NewDirectoryNode.
         """
 
+class IClientStatus(Interface):
+    def list_uploads():
+        """Return a list of IUploadStatus objects, one for each
+        upload which is currently running."""
+    def list_downloads():
+        """Return a list of IDownloadStatus objects, one for each
+        download which is currently running."""
+
 class IUploadStatus(Interface):
     def get_storage_index():
         """Return a string with the (binary) storage index in use on this

src/allmydata/upload.py

@@ -1167,3 +1167,6 @@ class Uploader(service.MultiService):
             return res
         d.addBoth(_done)
         return d
+
+    def list_uploads(self):
+        return self._all_uploads.keys()