view tests/test-bundle2-remote-changegroup.t @ 30745:c1b7b2285522

revlog: flag processor

Add the ability for revlog objects to process revision flags and apply
registered transforms on read/write operations.

This patch introduces:
- the 'revlog._processflags()' method that looks at revision flags and applies
  flag processors registered on them. Due to the need to handle non-commutative
  operations, flag transforms are applied in stable order but the order in which
  the transforms are applied is reversed between read and write operations.
- the 'addflagprocessor()' method allowing to register processors on flags.
  Flag processors are defined as a 3-tuple of (read, write, raw) functions to be
  applied depending on the operation being performed.
- an update on 'revlog.addrevision()' behavior. The current flagprocessor design
  relies on extensions to wrap around 'addrevision()' to set flags on revision
  data, and on the flagprocessor to perform the actual transformation of its
  contents. In the lfs case, this means we need to process flags before we meet
  the 2GB size check, leading to performing some operations before it happens:
  - if flags are set on the revision data, we assume some extensions might be
    modifying the contents using the flag processor next, and we compute the
    node for the original revision data (still allowing extension to override
    the node by wrapping around 'addrevision()').
  - we then invoke the flag processor to apply registered transforms (in lfs's
    case, drastically reducing the size of large blobs).
  - finally, we proceed with the 2GB size check.

Note: In the case a cachedelta is passed to 'addrevision()' and we detect the
flag processor modified the revision data, we chose to trust the flag processor
and drop the cachedelta.

#require killdaemons

Create an extension to test bundle2 remote-changegroup parts

  $ cat > bundle2.py << EOF
  > """A small extension to test bundle2 remote-changegroup parts.
  > 
  > Current bundle2 implementation doesn't provide a way to generate those
  > parts, so they must be created by extensions.
  > """
  > from mercurial import bundle2, changegroup, discovery, exchange, util
  > 
  > def _getbundlechangegrouppart(bundler, repo, source, bundlecaps=None,
  >                               b2caps=None, heads=None, common=None,
  >                               **kwargs):
  >     """this function replaces the changegroup part handler for getbundle.
  >     It allows to create a set of arbitrary parts containing changegroups
  >     and remote-changegroups, as described in a bundle2maker file in the
  >     repository .hg/ directory.
  > 
  >     Each line of that bundle2maker file contain a description of the
  >     part to add:
  >       - changegroup common_revset heads_revset
  >           Creates a changegroup part based, using common_revset and
  >           heads_revset for outgoing
  >       - remote-changegroup url file
  >           Creates a remote-changegroup part for a bundle at the given
  >           url. Size and digest, as required by the client, are computed
  >           from the given file.
  >       - raw-remote-changegroup <python expression>
  >           Creates a remote-changegroup part with the data given in the
  >           python expression as parameters. The python expression is
  >           evaluated with eval, and is expected to be a dict.
  >     """
  >     def newpart(name, data=''):
  >         """wrapper around bundler.newpart adding an extra part making the
  >         client output information about each processed part"""
  >         bundler.newpart('output', data=name)
  >         part = bundler.newpart(name, data=data)
  >         return part
  > 
  >     for line in open(repo.join('bundle2maker'), 'r'):
  >         line = line.strip()
  >         try:
  >             verb, args = line.split(None, 1)
  >         except ValueError:
  >             verb, args = line, ''
  >         if verb == 'remote-changegroup':
  >            url, file = args.split()
  >            bundledata = open(file, 'rb').read()
  >            digest = util.digester.preferred(b2caps['digests'])
  >            d = util.digester([digest], bundledata)
  >            part = newpart('remote-changegroup')
  >            part.addparam('url', url)
  >            part.addparam('size', str(len(bundledata)))
  >            part.addparam('digests', digest)
  >            part.addparam('digest:%s' % digest, d[digest])
  >         elif verb == 'raw-remote-changegroup':
  >            part = newpart('remote-changegroup')
  >            for k, v in eval(args).items():
  >                part.addparam(k, str(v))
  >         elif verb == 'changegroup':
  >             _common, heads = args.split()
  >             common.extend(repo.lookup(r) for r in repo.revs(_common))
  >             heads = [repo.lookup(r) for r in repo.revs(heads)]
  >             outgoing = discovery.outgoing(repo, common, heads)
  >             cg = changegroup.getchangegroup(repo, 'changegroup', outgoing)
  >             newpart('changegroup', cg.getchunks())
  >         else:
  >             raise Exception('unknown verb')
  > 
  > exchange.getbundle2partsmapping['changegroup'] = _getbundlechangegrouppart
  > EOF

Start a simple HTTP server to serve bundles

  $ python "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid
  $ cat dumb.pid >> $DAEMON_PIDS

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > ssh=python "$TESTDIR/dummyssh"
  > logtemplate={rev}:{node|short} {phase} {author} {bookmarks} {desc|firstline}
  > EOF

  $ hg init repo

  $ hg -R repo unbundle $TESTDIR/bundles/rebase.hg
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)

  $ hg -R repo log -G
  o  7:02de42196ebe draft Nicolas Dumazet <[e-mail]>  H
  |
  | o  6:eea13746799a draft Nicolas Dumazet <[e-mail]>  G
  |/|
  o |  5:24b6387c8c8c draft Nicolas Dumazet <[e-mail]>  F
  | |
  | o  4:9520eea781bc draft Nicolas Dumazet <[e-mail]>  E
  |/
  | o  3:32af7686d403 draft Nicolas Dumazet <[e-mail]>  D
  | |
  | o  2:5fddd98957c8 draft Nicolas Dumazet <[e-mail]>  C
  | |
  | o  1:42ccdea3bb16 draft Nicolas Dumazet <[e-mail]>  B
  |/
  o  0:cd010b8cd998 draft Nicolas Dumazet <[e-mail]>  A
  
  $ hg clone repo orig
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cat > repo/.hg/hgrc << EOF
  > [extensions]
  > bundle2=$TESTTMP/bundle2.py
  > EOF

Test a pull with an remote-changegroup

  $ hg bundle -R repo --type v1 --base '0:4' -r '5:7' bundle.hg
  3 changesets found
  $ cat > repo/.hg/bundle2maker << EOF
  > remote-changegroup http://localhost:$HGPORT/bundle.hg bundle.hg
  > EOF
  $ hg clone orig clone -r 3 -r 4
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 5 files (+1 heads)
  updating to branch default
  4 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 2 changes to 2 files (+1 heads)
  (run 'hg heads .' to see heads, 'hg merge' to merge)
  $ hg -R clone log -G
  o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
  |
  | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
  |/|
  o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
  | |
  | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
  |/
  | @  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
  | |
  | o  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
  | |
  | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
  |/
  o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
  
  $ rm -rf clone

Test a pull with an remote-changegroup and a following changegroup

  $ hg bundle -R repo --type v1 --base 2 -r '3:4' bundle2.hg
  2 changesets found
  $ cat > repo/.hg/bundle2maker << EOF
  > remote-changegroup http://localhost:$HGPORT/bundle2.hg bundle2.hg
  > changegroup 0:4 5:7
  > EOF
  $ hg clone orig clone -r 2
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files (+1 heads)
  remote: changegroup
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 2 changes to 2 files (+1 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg -R clone log -G
  o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
  |
  | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
  |/|
  o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
  | |
  | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
  |/
  | o  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
  | |
  | @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
  | |
  | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
  |/
  o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
  
  $ rm -rf clone

Test a pull with a changegroup followed by an remote-changegroup

  $ hg bundle -R repo --type v1 --base '0:4' -r '5:7' bundle3.hg
  3 changesets found
  $ cat > repo/.hg/bundle2maker << EOF
  > changegroup 000000000000 :4
  > remote-changegroup http://localhost:$HGPORT/bundle3.hg bundle3.hg
  > EOF
  $ hg clone orig clone -r 2
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: changegroup
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files (+1 heads)
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 2 changes to 2 files (+1 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg -R clone log -G
  o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
  |
  | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
  |/|
  o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
  | |
  | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
  |/
  | o  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
  | |
  | @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
  | |
  | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
  |/
  o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
  
  $ rm -rf clone

Test a pull with two remote-changegroups and a changegroup

  $ hg bundle -R repo --type v1 --base 2 -r '3:4' bundle4.hg
  2 changesets found
  $ hg bundle -R repo --type v1 --base '3:4' -r '5:6' bundle5.hg
  2 changesets found
  $ cat > repo/.hg/bundle2maker << EOF
  > remote-changegroup http://localhost:$HGPORT/bundle4.hg bundle4.hg
  > remote-changegroup http://localhost:$HGPORT/bundle5.hg bundle5.hg
  > changegroup 0:6 7
  > EOF
  $ hg clone orig clone -r 2
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files (+1 heads)
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 1 changes to 1 files
  remote: changegroup
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg -R clone log -G
  o  7:02de42196ebe public Nicolas Dumazet <[e-mail]>  H
  |
  | o  6:eea13746799a public Nicolas Dumazet <[e-mail]>  G
  |/|
  o |  5:24b6387c8c8c public Nicolas Dumazet <[e-mail]>  F
  | |
  | o  4:9520eea781bc public Nicolas Dumazet <[e-mail]>  E
  |/
  | o  3:32af7686d403 public Nicolas Dumazet <[e-mail]>  D
  | |
  | @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
  | |
  | o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
  |/
  o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
  
  $ rm -rf clone

Hash digest tests

  $ hg bundle -R repo --type v1 -a bundle6.hg
  8 changesets found

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'sha1', 'digest:sha1': '2c880cfec23cff7d8f80c2f12958d1563cbdaba6'}
  > EOF
  $ hg clone ssh://user@dummy/repo clone
  requesting all changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ rm -rf clone

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5', 'digest:md5': 'e22172c2907ef88794b7bea6642c2394'}
  > EOF
  $ hg clone ssh://user@dummy/repo clone
  requesting all changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ rm -rf clone

Hash digest mismatch throws an error

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'sha1', 'digest:sha1': '0' * 40}
  > EOF
  $ hg clone ssh://user@dummy/repo clone
  requesting all changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  transaction abort!
  rollback completed
  abort: bundle at http://localhost:$HGPORT/bundle6.hg is corrupted:
  sha1 mismatch: expected 0000000000000000000000000000000000000000, got 2c880cfec23cff7d8f80c2f12958d1563cbdaba6
  [255]

Multiple hash digests can be given

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5 sha1', 'digest:md5': 'e22172c2907ef88794b7bea6642c2394', 'digest:sha1': '2c880cfec23cff7d8f80c2f12958d1563cbdaba6'}
  > EOF
  $ hg clone ssh://user@dummy/repo clone
  requesting all changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ rm -rf clone

If either of the multiple hash digests mismatches, an error is thrown

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5 sha1', 'digest:md5': '0' * 32, 'digest:sha1': '2c880cfec23cff7d8f80c2f12958d1563cbdaba6'}
  > EOF
  $ hg clone ssh://user@dummy/repo clone
  requesting all changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  transaction abort!
  rollback completed
  abort: bundle at http://localhost:$HGPORT/bundle6.hg is corrupted:
  md5 mismatch: expected 00000000000000000000000000000000, got e22172c2907ef88794b7bea6642c2394
  [255]

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle6.hg', 'size': 1663, 'digests': 'md5 sha1', 'digest:md5': 'e22172c2907ef88794b7bea6642c2394', 'digest:sha1': '0' * 40}
  > EOF
  $ hg clone ssh://user@dummy/repo clone
  requesting all changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  transaction abort!
  rollback completed
  abort: bundle at http://localhost:$HGPORT/bundle6.hg is corrupted:
  sha1 mismatch: expected 0000000000000000000000000000000000000000, got 2c880cfec23cff7d8f80c2f12958d1563cbdaba6
  [255]

Corruption tests

  $ hg clone orig clone -r 2
  adding changesets
  adding manifests
  adding file changes
  added 3 changesets with 3 changes to 3 files
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cat > repo/.hg/bundle2maker << EOF
  > remote-changegroup http://localhost:$HGPORT/bundle4.hg bundle4.hg
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle5.hg', 'size': 578, 'digests': 'sha1', 'digest:sha1': '0' * 40}
  > changegroup 0:6 7
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files (+1 heads)
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 1 changes to 1 files
  transaction abort!
  rollback completed
  abort: bundle at http://localhost:$HGPORT/bundle5.hg is corrupted:
  sha1 mismatch: expected 0000000000000000000000000000000000000000, got f29485d6bfd37db99983cfc95ecb52f8ca396106
  [255]

The entire transaction has been rolled back in the pull above

  $ hg -R clone log -G
  @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
  |
  o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
  |
  o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
  

No params

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {}
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: remote-changegroup: missing "url" param
  [255]

Missing size

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg'}
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: remote-changegroup: missing "size" param
  [255]

Invalid size

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 'foo'}
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: remote-changegroup: invalid value for param "size"
  [255]

Size mismatch

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 42}
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files (+1 heads)
  transaction abort!
  rollback completed
  abort: bundle at http://localhost:$HGPORT/bundle4.hg is corrupted:
  size mismatch: expected 42, got 581
  [255]

Unknown digest

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 581, 'digests': 'foo', 'digest:foo': 'bar'}
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: missing support for remote-changegroup - digest:foo
  [255]

Missing digest

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'http://localhost:$HGPORT/bundle4.hg', 'size': 581, 'digests': 'sha1'}
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: remote-changegroup: missing "digest:sha1" param
  [255]

Not an HTTP url

  $ cat > repo/.hg/bundle2maker << EOF
  > raw-remote-changegroup {'url': 'ssh://localhost:$HGPORT/bundle4.hg', 'size': 581}
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: remote-changegroup does not support ssh urls
  [255]

Not a bundle

  $ cat > notbundle.hg << EOF
  > foo
  > EOF
  $ cat > repo/.hg/bundle2maker << EOF
  > remote-changegroup http://localhost:$HGPORT/notbundle.hg notbundle.hg
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: http://localhost:$HGPORT/notbundle.hg: not a Mercurial bundle
  [255]

Not a bundle 1.0

  $ cat > notbundle10.hg << EOF
  > HG20
  > EOF
  $ cat > repo/.hg/bundle2maker << EOF
  > remote-changegroup http://localhost:$HGPORT/notbundle10.hg notbundle10.hg
  > EOF
  $ hg pull -R clone ssh://user@dummy/repo
  pulling from ssh://user@dummy/repo
  searching for changes
  remote: remote-changegroup
  abort: http://localhost:$HGPORT/notbundle10.hg: not a bundle version 1.0
  [255]

  $ hg -R clone log -G
  @  2:5fddd98957c8 public Nicolas Dumazet <[e-mail]>  C
  |
  o  1:42ccdea3bb16 public Nicolas Dumazet <[e-mail]>  B
  |
  o  0:cd010b8cd998 public Nicolas Dumazet <[e-mail]>  A
  
  $ rm -rf clone

  $ killdaemons.py