view tests/test-lfs-serve-access.t @ 40326:fed697fa1734

sqlitestore: file storage backend using SQLite

This commit provides an extension which uses SQLite to store file
data (as opposed to revlogs).

As the inline documentation describes, there are still several
aspects to the extension that are incomplete. But it's a start.
The extension does support basic clone, checkout, and commit
workflows, which makes it suitable for simple use cases.

One notable missing feature is support for "bundlerepos." This is
probably responsible for the most test failures when the extension
is activated as part of the test suite.

All revision data is stored in SQLite. Data is stored as zstd
compressed chunks (default if zstd is available), zlib compressed
chunks (default if zstd is not available), or raw chunks (if
configured or if a compressed delta is not smaller than the raw
delta). This makes things very similar to revlogs.

Unlike revlogs, the extension doesn't yet enforce a limit on delta
chain length. This is an obvious limitation and should be addressed.
This is somewhat mitigated by the use of zstd, which is much faster
than zlib to decompress.

There is a dedicated table for storing deltas. Deltas are stored
by the SHA-1 hash of their uncompressed content. The "fileindex" table
has columns that reference the delta for each revision and the base
delta that delta should be applied against. A recursive SQL query
is used to resolve the delta chain along with the delta data.

By storing deltas by hash, we are able to de-duplicate delta storage!
With revlogs, the same deltas in different revlogs would result in
duplicate storage of that delta. In this scheme, inserting the
duplicate delta is a no-op and delta chains simply reference the
existing delta.

When initially implementing this extension, I did not have
content-indexed deltas and deltas could be duplicated across files
(just like revlogs). When I implemented content-indexed deltas, the
size of the SQLite database for a full clone of mozilla-unified
dropped:

before: 2,554,261,504 bytes
after:  2,488,754,176 bytes

Surprisingly, this is still larger than the bytes size of revlog
files:

revlog files: 2,104,861,230 bytes
du -b:        2,254,381,614

I would have expected storage to be smaller since we're not limiting
delta chain length and since we're using zstd instead of zlib. I
suspect the SQLite indexes and per-column overhead account for the
bulk of the differences. (Keep in mind that revlog uses a 64-byte
packed struct for revision index data and deltas are stored without
padding. Aside from the 12 unused bytes in the 32 byte node field,
revlogs are pretty efficient.) Another source of overhead is file
name storage. With revlogs, file names are stored in the filesystem.
But with SQLite, we need to store file names in the database. This is
roughly equivalent to the size of the fncache file, which for the
mozilla-unified repository is ~34MB.

Since the SQLite database isn't append-only and since delta chains
can reference any delta, this opens some interesting possibilities.
For example, we could store deltas in reverse, such that fulltexts
are stored for newer revisions and deltas are applied to reconstruct
older revisions. This is likely a more optimal storage strategy for
version control, as new data tends to be more frequently accessed
than old data. We would obviously need wire protocol support for
transferring revision data from newest to oldest. And we would
probably need some kind of mechanism for "re-encoding" stores. But
it should be doable.

This extension is very much experimental quality. There are a handful
of features that don't work. It probably isn't suitable for day-to-day
use. But it could be used in limited cases (e.g. read-only checkouts
like in CI). And it is also a good proving ground for alternate
storage backends. As we continue to define interfaces for all things
storage, it will be useful to have a viable alternate storage backend
to see how things shake out in practice.

test-storage.py passes on Python 2 and introduces no new test failures on
Python 3. Having the storage-level unit tests has proved to be insanely
useful when developing this extension. Those tests caught numerous bugs
during development and I'm convinced this style of testing is the way
forward for ensuring alternate storage backends work as intended. Of
course, test coverage isn't close to what it needs to be. But it is
a start. And what coverage we have gives me confidence that basic store
functionality is implemented properly.

Differential Revision: https://phab.mercurial-scm.org/D4928

#require serve no-reposimplestore no-chg

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > lfs=
  > [lfs]
  > track=all()
  > [web]
  > push_ssl = False
  > allow-push = *
  > EOF

Serving LFS files can experimentally be turned off.  The long term solution is
to support the 'verify' action in both client and server, so that the server can
tell the client to store files elsewhere.

  $ hg init server
  $ hg --config "lfs.usercache=$TESTTMP/servercache" \
  >    --config experimental.lfs.serve=False -R server serve -d \
  >    -p $HGPORT --pid-file=hg.pid -A $TESTTMP/access.log -E $TESTTMP/errors.log
  $ cat hg.pid >> $DAEMON_PIDS

Uploads fail...

  $ hg init client
  $ echo 'this-is-an-lfs-file' > client/lfs.bin
  $ hg -R client ci -Am 'initial commit'
  adding lfs.bin
  $ hg -R client push http://localhost:$HGPORT
  pushing to http://localhost:$HGPORT/
  searching for changes
  abort: LFS HTTP error: HTTP Error 400: no such method: .git (action=upload)!
  [255]

... so do a local push to make the data available.  Remove the blob from the
default cache, so it attempts to download.
  $ hg --config "lfs.usercache=$TESTTMP/servercache" \
  >    --config "lfs.url=null://" \
  >    -R client push -q server
  $ mv `hg config lfs.usercache` $TESTTMP/servercache

Downloads fail...

  $ hg clone http://localhost:$HGPORT httpclone
  (remote is using large file support (lfs); lfs will be enabled for this repository)
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  new changesets 525251863cad
  updating to branch default
  abort: LFS HTTP error: HTTP Error 400: no such method: .git (action=download)!
  [255]

  $ "$PYTHON" $RUNTESTDIR/killdaemons.py $DAEMON_PIDS

  $ cat $TESTTMP/access.log $TESTTMP/errors.log
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D525251863cad618e55d483555f3d00a2ca99597e x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 400 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:bookmarks=1&bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%252C03%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps%250Arev-branch-cache%250Astream%253Dv2&cg=1&common=0000000000000000000000000000000000000000&heads=525251863cad618e55d483555f3d00a2ca99597e&listkeys=bookmarks&phases=1 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 400 - (glob)

Blob URIs are correct when --prefix is used

  $ rm -f $TESTTMP/access.log $TESTTMP/errors.log
  $ hg --config "lfs.usercache=$TESTTMP/servercache" -R server serve -d \
  >    -p $HGPORT --pid-file=hg.pid --prefix=subdir/mount/point \
  >    -A $TESTTMP/access.log -E $TESTTMP/errors.log
  $ cat hg.pid >> $DAEMON_PIDS

  $ hg clone --debug http://localhost:$HGPORT/subdir/mount/point cloned2
  using http://localhost:$HGPORT/subdir/mount/point
  sending capabilities command
  (remote is using large file support (lfs); lfs will be enabled for this repository)
  query 1; heads
  sending batch command
  requesting all changes
  sending getbundle command
  bundle2-input-bundle: with-transaction
  bundle2-input-part: "changegroup" (params: 1 mandatory 1 advisory) supported
  adding changesets
  add changeset 525251863cad
  adding manifests
  adding file changes
  adding lfs.bin revisions
  added 1 changesets with 1 changes to 1 files
  bundle2-input-part: total payload size 648
  bundle2-input-part: "listkeys" (params: 1 mandatory) supported
  bundle2-input-part: "phase-heads" supported
  bundle2-input-part: total payload size 24
  bundle2-input-part: "cache:rev-branch-cache" (advisory) supported
  bundle2-input-part: total payload size 39
  bundle2-input-bundle: 3 parts total
  checking for updated bookmarks
  updating the branch cache
  new changesets 525251863cad
  updating to branch default
  resolving manifests
   branchmerge: False, force: False, partial: False
   ancestor: 000000000000, local: 000000000000+, remote: 525251863cad
  lfs: assuming remote store: http://localhost:$HGPORT/subdir/mount/point/.git/info/lfs
  Status: 200
  Content-Length: 371
  Content-Type: application/vnd.git-lfs+json
  Date: $HTTP_DATE$
  Server: testing stub value
  {
    "objects": [
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
            }
            "href": "http://localhost:$HGPORT/subdir/mount/point/.hg/lfs/objects/f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e"
          }
        }
        "oid": "f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e"
        "size": 20
      }
    ]
    "transfer": "basic"
  }
  lfs: downloading f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e (20 bytes)
  Status: 200
  Content-Length: 20
  Content-Type: application/octet-stream
  Date: $HTTP_DATE$
  Server: testing stub value
  lfs: adding f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e to the usercache
  lfs: processed: f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e
  lfs: downloaded 1 files (20 bytes)
   lfs.bin: remote created -> g
  getting lfs.bin
  lfs: found f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e in the local lfs store
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (sent 3 HTTP requests and * bytes; received * bytes in responses) (glob)

  $ "$PYTHON" $RUNTESTDIR/killdaemons.py $DAEMON_PIDS

  $ cat $TESTTMP/access.log $TESTTMP/errors.log
  $LOCALIP - - [$LOGDATE$] "GET /subdir/mount/point?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /subdir/mount/point?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /subdir/mount/point?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:bookmarks=1&bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%252C03%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps%250Arev-branch-cache%250Astream%253Dv2&cg=1&common=0000000000000000000000000000000000000000&heads=525251863cad618e55d483555f3d00a2ca99597e&listkeys=bookmarks&phases=1 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /subdir/mount/point/.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /subdir/mount/point/.hg/lfs/objects/f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e HTTP/1.1" 200 - (glob)

Blobs that already exist in the usercache are linked into the repo store, even
though the client doesn't send the blob.

  $ hg init server2
  $ hg --config "lfs.usercache=$TESTTMP/servercache" -R server2 serve -d \
  >    -p $HGPORT --pid-file=hg.pid \
  >    -A $TESTTMP/access.log -E $TESTTMP/errors.log
  $ cat hg.pid >> $DAEMON_PIDS

  $ hg --config "lfs.usercache=$TESTTMP/servercache" -R cloned2 --debug \
  >    push http://localhost:$HGPORT | grep '^[{} ]'
  {
    "objects": [
      {
        "oid": "f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e"
        "size": 20
      }
    ]
    "transfer": "basic"
  }
  $ find server2/.hg/store/lfs/objects | sort
  server2/.hg/store/lfs/objects
  server2/.hg/store/lfs/objects/f0
  server2/.hg/store/lfs/objects/f0/3217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e
  $ "$PYTHON" $RUNTESTDIR/killdaemons.py $DAEMON_PIDS
  $ cat $TESTTMP/errors.log

  $ cat >> $TESTTMP/lfsstoreerror.py <<EOF
  > import errno
  > from hgext.lfs import blobstore
  > 
  > _numverifies = 0
  > _readerr = True
  > 
  > def reposetup(ui, repo):
  >     # Nothing to do with a remote repo
  >     if not repo.local():
  >         return
  > 
  >     store = repo.svfs.lfslocalblobstore
  >     class badstore(store.__class__):
  >         def download(self, oid, src):
  >             '''Called in the server to handle reading from the client in a
  >             PUT request.'''
  >             origread = src.read
  >             def _badread(nbytes):
  >                 # Simulate bad data/checksum failure from the client
  >                 return b'0' * len(origread(nbytes))
  >             src.read = _badread
  >             super(badstore, self).download(oid, src)
  > 
  >         def _read(self, vfs, oid, verify):
  >             '''Called in the server to read data for a GET request, and then
  >             calls self._verify() on it before returning.'''
  >             global _readerr
  >             # One time simulation of a read error
  >             if _readerr:
  >                 _readerr = False
  >                 raise IOError(errno.EIO, '%s: I/O error' % oid)
  >             # Simulate corrupt content on client download
  >             blobstore._verify(oid, 'dummy content')
  > 
  >         def verify(self, oid):
  >             '''Called in the server to populate the Batch API response,
  >             letting the client re-upload if the file is corrupt.'''
  >             # Fail verify in Batch API for one clone command and one push
  >             # command with an IOError.  Then let it through to access other
  >             # functions.  Checksum failure is tested elsewhere.
  >             global _numverifies
  >             _numverifies += 1
  >             if _numverifies <= 2:
  >                 raise IOError(errno.EIO, '%s: I/O error' % oid)
  >             return super(badstore, self).verify(oid)
  > 
  >     store.__class__ = badstore
  > EOF

  $ rm -rf `hg config lfs.usercache`
  $ rm -f $TESTTMP/access.log $TESTTMP/errors.log
  $ hg --config "lfs.usercache=$TESTTMP/servercache" \
  >    --config extensions.lfsstoreerror=$TESTTMP/lfsstoreerror.py \
  >    -R server serve -d \
  >    -p $HGPORT1 --pid-file=hg.pid -A $TESTTMP/access.log -E $TESTTMP/errors.log
  $ cat hg.pid >> $DAEMON_PIDS

Test an I/O error in localstore.verify() (Batch API) with GET

  $ hg clone http://localhost:$HGPORT1 httpclone2
  (remote is using large file support (lfs); lfs will be enabled for this repository)
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  new changesets 525251863cad
  updating to branch default
  abort: LFS server error for "lfs.bin": Internal server error!
  [255]

Test an I/O error in localstore.verify() (Batch API) with PUT

  $ echo foo > client/lfs.bin
  $ hg -R client ci -m 'mod lfs'
  $ hg -R client push http://localhost:$HGPORT1
  pushing to http://localhost:$HGPORT1/
  searching for changes
  abort: LFS server error for "unknown": Internal server error!
  [255]
TODO: figure out how to associate the file name in the error above

Test a bad checksum sent by the client in the transfer API

  $ hg -R client push http://localhost:$HGPORT1
  pushing to http://localhost:$HGPORT1/
  searching for changes
  abort: HTTP error: HTTP Error 422: corrupt blob (oid=b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c, action=upload)!
  [255]

  $ echo 'test lfs file' > server/lfs3.bin
  $ hg --config experimental.lfs.disableusercache=True \
  >    -R server ci -Aqm 'another lfs file'
  $ hg -R client pull -q http://localhost:$HGPORT1

Test an I/O error during the processing of the GET request

  $ hg --config lfs.url=http://localhost:$HGPORT1/.git/info/lfs \
  >    -R client update -r tip
  abort: HTTP error: HTTP Error 500: Internal Server Error (oid=276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d, action=download)!
  [255]

Test a checksum failure during the processing of the GET request

  $ hg --config lfs.url=http://localhost:$HGPORT1/.git/info/lfs \
  >    -R client update -r tip
  abort: HTTP error: HTTP Error 422: corrupt blob (oid=276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d, action=download)!
  [255]

  $ "$PYTHON" $RUNTESTDIR/killdaemons.py $DAEMON_PIDS

  $ cat $TESTTMP/access.log
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:bookmarks=1&bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%252C03%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps%250Arev-branch-cache%250Astream%253Dv2&cg=1&common=0000000000000000000000000000000000000000&heads=525251863cad618e55d483555f3d00a2ca99597e&listkeys=bookmarks&phases=1 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D392c05922088bacf8e68a6939b480017afbf245d x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=branchmap HTTP/1.1" 200 - x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D392c05922088bacf8e68a6939b480017afbf245d x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=branchmap HTTP/1.1" 200 - x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "PUT /.hg/lfs/objects/b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c HTTP/1.1" 422 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D392c05922088bacf8e68a6939b480017afbf245d x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:bookmarks=1&bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%252C03%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps%250Arev-branch-cache%250Astream%253Dv2&cg=1&common=525251863cad618e55d483555f3d00a2ca99597e&heads=506bf3d83f78c54b89e81c6411adee19fdf02156+525251863cad618e55d483555f3d00a2ca99597e&listkeys=bookmarks&phases=1 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d HTTP/1.1" 500 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d HTTP/1.1" 422 - (glob)

  $ grep -v '  File "' $TESTTMP/errors.log
  $LOCALIP - - [$ERRDATE$] HG error:  Exception happened while processing request '/.git/info/lfs/objects/batch': (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  Traceback (most recent call last): (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      verifies = store.verify(oid) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      raise IOError(errno.EIO, '%s: I/O error' % oid) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  IOError: [Errno 5] f03217a32529a28a42d03b1244fe09b6e0f9fd06d7b966d4d50567be2abe6c0e: I/O error (glob)
  $LOCALIP - - [$ERRDATE$] HG error:   (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  Exception happened while processing request '/.git/info/lfs/objects/batch': (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  Traceback (most recent call last): (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      verifies = store.verify(oid) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      raise IOError(errno.EIO, '%s: I/O error' % oid) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  IOError: [Errno 5] b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c: I/O error (glob)
  $LOCALIP - - [$ERRDATE$] HG error:   (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  Exception happened while processing request '/.hg/lfs/objects/b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c': (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  Traceback (most recent call last): (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      localstore.download(oid, req.bodyfh) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      super(badstore, self).download(oid, src) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      % oid) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  LfsCorruptionError: corrupt remote lfs object: b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c (glob)
  $LOCALIP - - [$ERRDATE$] HG error:   (glob)
  $LOCALIP - - [$ERRDATE$] Exception happened during processing request '/.hg/lfs/objects/276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d': (glob)
  Traceback (most recent call last):
      self.do_write()
      self.do_hgweb()
      for chunk in self.server.application(env, self._start_response):
      for r in self._runwsgi(req, res, repo):
      rctx, req, res, self.check_perm)
      return func(*(args + a), **kw)
      lambda perm:
      res.setbodybytes(localstore.read(oid))
      blob = self._read(self.vfs, oid, verify)
      raise IOError(errno.EIO, '%s: I/O error' % oid)
  IOError: [Errno 5] 276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d: I/O error
  
  $LOCALIP - - [$ERRDATE$] HG error:  Exception happened while processing request '/.hg/lfs/objects/276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d': (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  Traceback (most recent call last): (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      res.setbodybytes(localstore.read(oid)) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      blob = self._read(self.vfs, oid, verify) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      blobstore._verify(oid, 'dummy content') (glob)
  $LOCALIP - - [$ERRDATE$] HG error:      hint=_('run hg verify')) (glob)
  $LOCALIP - - [$ERRDATE$] HG error:  LfsCorruptionError: detected corrupt lfs object: 276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d (glob)
  $LOCALIP - - [$ERRDATE$] HG error:   (glob)

Basic Authorization headers are returned by the Batch API, and sent back with
the GET/PUT request.

  $ rm -f $TESTTMP/access.log $TESTTMP/errors.log

  $ cat >> $HGRCPATH << EOF
  > [experimental]
  > lfs.disableusercache = True
  > [auth]
  > l.schemes=http
  > l.prefix=lo
  > l.username=user
  > l.password=pass
  > EOF

  $ cat << EOF > userpass.py
  > import base64
  > from mercurial.hgweb import common
  > def perform_authentication(hgweb, req, op):
  >     auth = req.headers.get(b'Authorization')
  >     if not auth:
  >         raise common.ErrorResponse(common.HTTP_UNAUTHORIZED, b'who',
  >                 [(b'WWW-Authenticate', b'Basic Realm="mercurial"')])
  >     if base64.b64decode(auth.split()[1]).split(b':', 1) != [b'user',
  >                                                             b'pass']:
  >         raise common.ErrorResponse(common.HTTP_FORBIDDEN, b'no')
  > def extsetup():
  >     common.permhooks.insert(0, perform_authentication)
  > EOF

  $ hg --config extensions.x=$TESTTMP/userpass.py \
  >    -R server serve -d -p $HGPORT1 --pid-file=hg.pid \
  >    -A $TESTTMP/access.log -E $TESTTMP/errors.log
  $ mv hg.pid $DAEMON_PIDS

  $ hg clone --debug http://localhost:$HGPORT1 auth_clone | egrep '^[{}]|  '
  {
    "objects": [
      {
        "actions": {
          "download": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
              "Authorization": "Basic dXNlcjpwYXNz"
            }
            "href": "http://localhost:$HGPORT1/.hg/lfs/objects/276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d"
          }
        }
        "oid": "276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d"
        "size": 14
      }
    ]
    "transfer": "basic"
  }

  $ echo 'another blob' > auth_clone/lfs.blob
  $ hg -R auth_clone ci -Aqm 'add blob'
  $ hg -R auth_clone --debug push | egrep '^[{}]|  '
  {
    "objects": [
      {
        "actions": {
          "upload": {
            "expires_at": "$ISO_8601_DATE_TIME$"
            "header": {
              "Accept": "application/vnd.git-lfs"
              "Authorization": "Basic dXNlcjpwYXNz"
            }
            "href": "http://localhost:$HGPORT1/.hg/lfs/objects/df14287d8d75f076a6459e7a3703ca583ca9fb3f4918caed10c77ac8622d49b3"
          }
        }
        "oid": "df14287d8d75f076a6459e7a3703ca583ca9fb3f4918caed10c77ac8622d49b3"
        "size": 13
      }
    ]
    "transfer": "basic"
  }

  $ "$PYTHON" $RUNTESTDIR/killdaemons.py $DAEMON_PIDS

  $ cat $TESTTMP/access.log $TESTTMP/errors.log
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 401 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=getbundle HTTP/1.1" 200 - x-hgarg-1:bookmarks=1&bundlecaps=HG20%2Cbundle2%3DHG20%250Abookmarks%250Achangegroup%253D01%252C02%252C03%250Adigests%253Dmd5%252Csha1%252Csha512%250Aerror%253Dabort%252Cunsupportedcontent%252Cpushraced%252Cpushkey%250Ahgtagsfnodes%250Alistkeys%250Aphases%253Dheads%250Apushkey%250Aremote-changegroup%253Dhttp%252Chttps%250Arev-branch-cache%250Astream%253Dv2&cg=1&common=0000000000000000000000000000000000000000&heads=506bf3d83f78c54b89e81c6411adee19fdf02156+525251863cad618e55d483555f3d00a2ca99597e&listkeys=bookmarks&phases=1 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 401 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /.hg/lfs/objects/276f73cfd75f9fb519810df5f5d96d6594ca2521abd86cbcd92122f7d51a1f3d HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 401 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=capabilities HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=batch HTTP/1.1" 200 - x-hgarg-1:cmds=heads+%3Bknown+nodes%3D525251863cad618e55d483555f3d00a2ca99597e+4d9397055dc0c205f3132f331f36353ab1a525a3 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=branchmap HTTP/1.1" 200 - x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=bookmarks x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 401 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /.git/info/lfs/objects/batch HTTP/1.1" 200 - (glob)
  $LOCALIP - - [$LOGDATE$] "PUT /.hg/lfs/objects/df14287d8d75f076a6459e7a3703ca583ca9fb3f4918caed10c77ac8622d49b3 HTTP/1.1" 201 - (glob)
  $LOCALIP - - [$LOGDATE$] "POST /?cmd=unbundle HTTP/1.1" 200 - x-hgarg-1:heads=666f726365 x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)
  $LOCALIP - - [$LOGDATE$] "GET /?cmd=listkeys HTTP/1.1" 200 - x-hgarg-1:namespace=phases x-hgproto-1:0.1 0.2 comp=$USUAL_COMPRESSIONS$ partial-pull (glob)