view tests/test-phases.t @ 17616:9535a0dc41f2

store: implement fncache basic path encoding in C

(This is not yet enabled; it will be turned on in a followup patch.)

The path encoding performed by fncache is complex and (perhaps
surprisingly) slow enough to negatively affect the overall performance
of Mercurial.

For a short path (< 120 bytes), the Python code can be reduced to a fairly
tractable state machine that either determines that nothing needs to be
done in a single pass, or performs the encoding in a second pass.

For longer paths, we avoid the more complicated hashed encoding scheme
for now, and fall back to Python.

Raw performance: I measured in a repo containing 150,000 files in its tip
manifest, with a median path name length of 57 bytes, and 95th percentile
of 96 bytes.

In this repo, the Python code takes 3.1 seconds to encode all path
names, while the hybrid C-and-Python code (called from Python) takes
0.21 seconds, for a speedup of about 14.

Across several other large repositories, I've measured the speedup from
the C code at between 26x and 40x.

For path names above 120 bytes where we must fall back to Python for
hashed encoding, the speedup is about 1.7x.  Thus absolute performance
will depend strongly on the characteristics of a particular repository.

  $ hglog() { hg log --template "{rev} {phaseidx} {desc}\n" $*; }
  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    message="$1"
  >    shift
  >    hg ci -m "$message" $*
  > }

  $ hg init initialrepo
  $ cd initialrepo

Cannot change null revision phase

  $ hg phase --force --secret null
  abort: cannot change null revision phase
  [255]
  $ hg phase null
  -1: public

  $ mkcommit A

New commit are draft by default

  $ hglog
  0 1 A

Following commit are draft too

  $ mkcommit B

  $ hglog
  1 1 B
  0 1 A

Draft commit are properly created over public one:

  $ hg phase --public .
  $ hglog
  1 0 B
  0 0 A

  $ mkcommit C
  $ mkcommit D

  $ hglog
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Test creating changeset as secret

  $ mkcommit E --config phases.new-commit='secret'
  $ hglog
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Test the secret property is inherited

  $ mkcommit H
  $ hglog
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Even on merge

  $ hg up -q 1
  $ mkcommit "B'"
  created new head
  $ hglog
  6 1 B'
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A
  $ hg merge 4 # E
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg ci -m "merge B' and E"
  $ hglog
  7 2 merge B' and E
  6 1 B'
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Test secret changeset are not pushed

  $ hg init ../push-dest
  $ cat > ../push-dest/.hg/hgrc << EOF
  > [phases]
  > publish=False
  > EOF
  $ hg outgoing ../push-dest --template='{rev} {phase} {desc|firstline}\n'
  comparing with ../push-dest
  searching for changes
  0 public A
  1 public B
  2 draft C
  3 draft D
  6 draft B'
  $ hg outgoing -r 'branch(default)' ../push-dest --template='{rev} {phase} {desc|firstline}\n'
  comparing with ../push-dest
  searching for changes
  0 public A
  1 public B
  2 draft C
  3 draft D
  6 draft B'

  $ hg push ../push-dest -f # force because we push multiple heads
  pushing to ../push-dest
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 5 files (+1 heads)
  $ hglog
  7 2 merge B' and E
  6 1 B'
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A
  $ cd ../push-dest
  $ hglog
  4 1 B'
  3 1 D
  2 1 C
  1 0 B
  0 0 A

(Issue3303)
Check that remote secret changeset are ignore when checking creation of remote heads

We add a secret head into the push destination.  This secreat head shadow a
visible shared between the initial repo and the push destination.

  $ hg up -q 4 # B'
  $ mkcommit Z --config phases.new-commit=secret
  $ hg phase .
  5: secret

# We now try to push a new public changeset that descend from the common public
# head shadowed by the remote secret head.

  $ cd ../initialrepo
  $ hg up -q 6 #B'
  $ mkcommit I
  created new head
  $ hg push ../push-dest
  pushing to ../push-dest
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)

:note: The "(+1 heads)" is wrong as we do not had any visible head


Restore condition prior extra insertion.
  $ hg -q --config extensions.mq= strip .
  $ hg up -q 7
  $ cd ..

Test secret changeset are not pull

  $ hg init pull-dest
  $ cd pull-dest
  $ hg pull ../initialrepo
  pulling from ../initialrepo
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 5 files (+1 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hglog
  4 0 B'
  3 0 D
  2 0 C
  1 0 B
  0 0 A
  $ cd ..

But secret can still be bundled explicitly

  $ cd initialrepo
  $ hg bundle --base '4^' -r 'children(4)' ../secret-bundle.hg
  4 changesets found
  $ cd ..

Test secret changeset are not cloned
(during local clone)

  $ hg clone -qU initialrepo clone-dest
  $ hglog -R clone-dest
  4 0 B'
  3 0 D
  2 0 C
  1 0 B
  0 0 A

Test revset

  $ cd initialrepo
  $ hglog -r 'public()'
  0 0 A
  1 0 B
  $ hglog -r 'draft()'
  2 1 C
  3 1 D
  6 1 B'
  $ hglog -r 'secret()'
  4 2 E
  5 2 H
  7 2 merge B' and E

test that phase are displayed in log at debug level

  $ hg log --debug
  changeset:   7:17a481b3bccb796c0521ae97903d81c52bfee4af
  tag:         tip
  phase:       secret
  parent:      6:cf9fe039dfd67e829edf6522a45de057b5c86519
  parent:      4:a603bfb5a83e312131cebcd05353c217d4d21dde
  manifest:    7:5e724ffacba267b2ab726c91fc8b650710deaaa8
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      C D E
  extra:       branch=default
  description:
  merge B' and E
  
  
  changeset:   6:cf9fe039dfd67e829edf6522a45de057b5c86519
  phase:       draft
  parent:      1:27547f69f25460a52fff66ad004e58da7ad3fb56
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    6:ab8bfef2392903058bf4ebb9e7746e8d7026b27a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      B'
  extra:       branch=default
  description:
  B'
  
  
  changeset:   5:a030c6be5127abc010fcbff1851536552e6951a8
  phase:       secret
  parent:      4:a603bfb5a83e312131cebcd05353c217d4d21dde
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    5:5c710aa854874fe3d5fa7192e77bdb314cc08b5a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      H
  extra:       branch=default
  description:
  H
  
  
  changeset:   4:a603bfb5a83e312131cebcd05353c217d4d21dde
  phase:       secret
  parent:      3:b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    4:7173fd1c27119750b959e3a0f47ed78abe75d6dc
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      E
  extra:       branch=default
  description:
  E
  
  
  changeset:   3:b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e
  phase:       draft
  parent:      2:f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    3:6e1f4c47ecb533ffd0c8e52cdc88afb6cd39e20c
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      D
  extra:       branch=default
  description:
  D
  
  
  changeset:   2:f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  phase:       draft
  parent:      1:27547f69f25460a52fff66ad004e58da7ad3fb56
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    2:66a5a01817fdf5239c273802b5b7618d051c89e4
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      C
  extra:       branch=default
  description:
  C
  
  
  changeset:   1:27547f69f25460a52fff66ad004e58da7ad3fb56
  parent:      0:4a2df7238c3b48766b5e22fafbb8a2f506ec8256
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    1:cb5cbbc1bfbf24cc34b9e8c16914e9caa2d2a7fd
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      B
  extra:       branch=default
  description:
  B
  
  
  changeset:   0:4a2df7238c3b48766b5e22fafbb8a2f506ec8256
  parent:      -1:0000000000000000000000000000000000000000
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    0:007d8c9d88841325f5c6b06371b35b4e8a2b1a83
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      A
  extra:       branch=default
  description:
  A
  
  

Test phase command
===================

initial picture

  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > hgext.graphlog=
  > EOF
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 secret E
  | |
  o |  3 draft D
  | |
  o |  2 draft C
  |/
  o  1 public B
  |
  o  0 public A
  

display changesets phase

(mixing -r and plain rev specification)

  $ hg phase 1::4 -r 7
  1: public
  2: draft
  3: draft
  4: secret
  7: secret


move changeset forward

(with -r option)

  $ hg phase --public -r 2
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 secret E
  | |
  o |  3 draft D
  | |
  o |  2 public C
  |/
  o  1 public B
  |
  o  0 public A
  

move changeset backward

(without -r option)

  $ hg phase --draft --force 2
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 secret E
  | |
  o |  3 draft D
  | |
  o |  2 draft C
  |/
  o  1 public B
  |
  o  0 public A
  

move changeset forward and backward

  $ hg phase --draft --force 1::4
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 draft E
  | |
  o |  3 draft D
  | |
  o |  2 draft C
  |/
  o  1 draft B
  |
  o  0 public A
  
test partial failure

  $ hg phase --public 7
  $ hg phase --draft '5 or 7'
  cannot move 1 changesets to a more permissive phase, use --force
  phase changed for 1 changesets
  [1]
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 public merge B' and E
  |\
  | o  6 public B'
  | |
  +---o  5 draft H
  | |
  o |  4 public E
  | |
  o |  3 public D
  | |
  o |  2 public C
  |/
  o  1 public B
  |
  o  0 public A
  

test complete failure

  $ hg phase --draft 7
  cannot move 1 changesets to a more permissive phase, use --force
  no phases changed
  [1]

  $ cd ..