Done to avoid a "tmp" directory appearing in webdav exports.
Also affects non-export webdav remotes, so interrupted uploads using the
old path will not overwrite it. However, PUT is quite likely to be
implemented atomically on web servers anyway, so I doubt this will cause
problems.
The subtle part of this is what happens when the remote fails to remove
an empty directory. The removal from the export needs to fail in that
case, so the removal will be tried again later. However, removeExportLocation
has already been run and changed the export db, so if the next run
checks getExportLocation, it might decide nothing remains to be done,
leaving the empty directory.
Dealt with that by making removeEmptyDirectories, handle a failure
by calling addExportLocation, reverting the database changes so the next
run will be guaranteed to try deleting the empty directory again.
This commit was sponsored by Thomas Hochstein on Patreon.
Not yet called by Command.Export.
WebDAV needs this to clean up empty collections. Also, example.sh turned
out to not be cleaning up directories when removing content
from them, so it made sense for it to use this.
Remote.Directory did not need it, and since its cleanup method for empty
directories is more efficient than what Command.Export will need to do
to find empty directories, it uses Nothing so that extra work can be
avoided.
This commit was sponsored by Thom May on Patreon.
Apparently box.com renaming is just buggy. I tried a couple of fixes:
* In case the http Manager was opening multiple connections and reaching
different backend servers, I tried limiting the number of connections
to 1. Didn't help.
* To make sure it was not a http connection reuse problem, I tried
rewriting how exportAction works, so that the same http connection
is clearly open. Didn't help.
So, disable renaming of exports for box.com. It would be good to test it
with some other webdav server.
This commit was sponsored by John Peloquin on Patreon.
Use tmp/key when exporting, so the whole export directory structure does
not have to be created under tmp/
This commit was sponsored by Denis Dzyubenko on Patreon.
It was not getting old lines removed, because the tree graft confused
the updater, so it union merged from the previous git-annex branch,
which still contained the old lines. Fixed by carefully using setIndexSha.
This commit was supported by the NSF-funded DataLad project.
This breaks backwards compatibility, but only with unreleased versions of
git-annex, which I think is acceptable.
This commit was supported by the NSF-funded DataLad project.
inDAVLocation does not url-escape, and so exporting a filename with spaces
to box.com at least resulted in a error 400.
It might also have affected storing keys on a webdav remote, if the key
contained a space or other problem character. Pretty unlikely.
I emailed Clint about the inDAVLocation gotcha, but seems best to fix it
here.
This commit was supported by the NSF-funded DataLad project.
webdav: Checking if a non-existent file is present on Box.com triggered a
bug in its webdav support that generates an infinite series of redirects.
It seems to redirect foo to foo/ to foo/index.php to
foo/index.php/index.php ... Why a webdav endpoint would behave this way
who knows.
Deal with such problems by assuming such behavior means the file is not
present.
Can't simply disable following redirects, because the webdav endpoint could
legitimately be redirected to a new endpoint. So, when this happens
10 redirects have to be followed, before it gives up and assumes this means
the file does not exist.
This commit was supported by the NSF-funded DataLad project.
This way, the temp files that might be left due to failure will be
cleaned up next time.
Also, nub the list of incomplete exports to avoid repeatedly adding the
same tree to it when running export repeatedly when it's failing.
This commit was supported by the NSF-funded DataLad project.
This basically works, but there's a bug when renaming a file that leaves
a .git-annex-temp-content-key file in the webdav store, that never gets
cleaned up.
Also, exporting files with spaces to box.com seems to fail; perhaps it
does not support it?
This commit was supported by the NSF-funded DataLad project.
