view tests/test-remotefilelog-prefetch.t @ 40924:08cfa77d7288

wireprotov2: unify file revision collection and linknode derivation

The old mechanism for choosing which file revisions to send in the
haveparents=True case was buggy in multiple ways - the most severe
of which being that file revisions were excluded when they shouldn't
have been.

This commit unifies the logic for deriving the filenodes that will
be sent by the "filesdata" command. We now consistently read files
data from manifests. The "haveparents" argument now controls whether
we iterate ctx.files() or use the full manifest to derive relevant
files.

The logic here is still woefully lacking to fully support shallow
clones. It will require an API break to fully address. This commit
should at least make the server APIs emit proper data, which is
strictly better than before.

Differential Revision: https://phab.mercurial-scm.org/D5406

#require no-windows

  $ . "$TESTDIR/remotefilelog-library.sh"

  $ hg init master
  $ cd master
  $ cat >> .hg/hgrc <<EOF
  > [remotefilelog]
  > server=True
  > EOF
  $ echo x > x
  $ echo z > z
  $ hg commit -qAm x
  $ echo x2 > x
  $ echo y > y
  $ hg commit -qAm y
  $ hg bookmark foo

  $ cd ..

# prefetch a revision

  $ hgcloneshallow ssh://user@dummy/master shallow --noupdate
  streaming all changes
  2 files to transfer, 528 bytes of data
  transferred 528 bytes in * seconds (*/sec) (glob)
  searching for changes
  no changes found
  $ cd shallow

  $ hg prefetch -r 0
  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 0 x
  x

# prefetch with base

  $ clearcache
  $ hg prefetch -r 0::1 -b 0
  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 1 x
  x2
  $ hg cat -r 1 y
  y

  $ hg cat -r 0 x
  x
  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 0 z
  z
  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ hg prefetch -r 0::1 --base 0
  $ hg prefetch -r 0::1 -b 1
  $ hg prefetch -r 0::1

# prefetch a range of revisions

  $ clearcache
  $ hg prefetch -r 0::1
  4 files fetched over 1 fetches - (4 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 0 x
  x
  $ hg cat -r 1 x
  x2

# prefetch certain files

  $ clearcache
  $ hg prefetch -r 1 x
  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 1 x
  x2

  $ hg cat -r 1 y
  y
  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

# prefetch on pull when configured

  $ printf "[remotefilelog]\npullprefetch=bookmark()\n" >> .hg/hgrc
  $ hg strip tip
  saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/109c3a557a73-3f43405e-backup.hg (glob)

  $ clearcache
  $ hg pull
  pulling from ssh://user@dummy/master
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 0 changes to 0 files
  updating bookmark foo
  new changesets 109c3a557a73
  (run 'hg update' to get a working copy)
  prefetching file contents
  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)

  $ hg up tip
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

# prefetch only fetches changes not in working copy

  $ hg strip tip
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/109c3a557a73-3f43405e-backup.hg (glob)
  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)
  $ clearcache

  $ hg pull
  pulling from ssh://user@dummy/master
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 0 changes to 0 files
  updating bookmark foo
  new changesets 109c3a557a73
  (run 'hg update' to get a working copy)
  prefetching file contents
  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

# Make some local commits that produce the same file versions as are on the
# server. To simulate a situation where we have local commits that were somehow
# pushed, and we will soon pull.

  $ hg prefetch -r 'all()'
  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)
  $ hg strip -q -r 0
  $ echo x > x
  $ echo z > z
  $ hg commit -qAm x
  $ echo x2 > x
  $ echo y > y
  $ hg commit -qAm y

# prefetch server versions, even if local versions are available

  $ clearcache
  $ hg strip -q tip
  $ hg pull
  pulling from ssh://user@dummy/master
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 0 changes to 0 files
  updating bookmark foo
  new changesets 109c3a557a73
  1 local changesets published (?)
  (run 'hg update' to get a working copy)
  prefetching file contents
  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

  $ cd ..

# Prefetch unknown files during checkout

  $ hgcloneshallow ssh://user@dummy/master shallow2
  streaming all changes
  2 files to transfer, 528 bytes of data
  transferred 528 bytes in * seconds * (glob)
  searching for changes
  no changes found
  updating to branch default
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over * (glob)
  $ cd shallow2
  $ hg up -q null
  $ echo x > x
  $ echo y > y
  $ echo z > z
  $ clearcache
  $ hg up tip
  x: untracked file differs
  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)
  abort: untracked files in working directory differ from files in requested revision
  [255]
  $ hg revert --all

# Test batch fetching of lookup files during hg status
  $ hg up --clean tip
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg debugrebuilddirstate
  $ clearcache
  $ hg status
  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)

# Prefetch during addrename detection
  $ hg up -q --clean tip
  $ hg revert --all
  $ mv x x2
  $ mv y y2
  $ mv z z2
  $ clearcache
  $ hg addremove -s 50 > /dev/null
  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)
  $ hg revert --all
  forgetting x2
  forgetting y2
  forgetting z2
  undeleting x
  undeleting y
  undeleting z


# Revert across double renames. Note: the scary "abort", error is because
# https://bz.mercurial-scm.org/5419 .

  $ cd ../master
  $ hg mv z z2
  $ hg commit -m 'move z -> z2'
  $ cd ../shallow2
  $ hg pull -q
  $ clearcache
  $ hg mv y y2
  y2: not overwriting - file exists
  ('hg rename --after' to record the rename)
  [1]
  $ hg mv x x2
  x2: not overwriting - file exists
  ('hg rename --after' to record the rename)
  [1]
  $ hg mv z2 z3
  z2: not copying - file is not managed
  abort: no files to copy
  [255]
  $ hg revert -a -r 1 || true
  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)
  abort: z2@109c3a557a73: not found in manifest! (?)