Merge pull request datalad#7648 from yarikoptic/enh-checkurl

Provide detail on why CHECKURL failed for datalad and archive special remotes (would require new AnnexRemote release (above 1.6.5) to take advantage of this PR)

changelog.d/pr-7648.md

@@ -0,0 +1,3 @@
+### 🐛 Bug Fixes
+
+- Provide detail on why CHECKURL failed for datalad and archive special remotes (would require new AnnexRemote release (above 1.6.5) to take advantage of this PR).  [PR #7648](https://github.com/datalad/datalad/pull/7648) (by [@yarikoptic](https://github.com/yarikoptic))

datalad/customremotes/archives.py

@@ -312,7 +312,7 @@ def checkurl(self, url):
         else:
             # TODO: theoretically we should first check if key is available
             # from any remote to know if file is available
-            return False
+            raise RemoteError(f"archive key {akey} is not available locally.")
 
     def checkpresent(self, key):
         # TODO: so we need to maintain mapping from urls to keys.  Then

datalad/customremotes/datalad.py

@@ -13,17 +13,16 @@
 import logging
 from urllib.parse import urlparse
 
+from datalad.customremotes import RemoteError
+from datalad.customremotes.base import AnnexCustomRemote
+from datalad.customremotes.main import main as super_main
 from datalad.downloaders.providers import Providers
 from datalad.support.exceptions import (
     CapturedException,
     TargetFileAbsent,
 )
 from datalad.utils import unique
 
-from datalad.customremotes import RemoteError
-from datalad.customremotes.base import AnnexCustomRemote
-from datalad.customremotes.main import main as super_main
-
 lgr = logging.getLogger('datalad.customremotes.datalad')
 
 
@@ -72,7 +71,7 @@ def checkurl(self, url):
         except Exception as exc:
             ce = CapturedException(exc)
             self.message("Failed to check url %s: %s" % (url, ce))
-            return False
+            raise RemoteError(str(ce))
 
     def checkpresent(self, key):
         resp = None