view tests/test-mq-qimport.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.

  $ "$TESTDIR/hghave" killdaemons || exit 80

  $ cat > writelines.py <<EOF
  > import sys
  > path = sys.argv[1]
  > args = sys.argv[2:]
  > assert (len(args) % 2) == 0
  > 
  > f = file(path, 'wb')
  > for i in xrange(len(args)/2):
  >    count, s = args[2*i:2*i+2]
  >    count = int(count)
  >    s = s.decode('string_escape')
  >    f.write(s*count)
  > f.close()
  > 
  > EOF
  $ echo "[extensions]" >> $HGRCPATH
  $ echo "mq=" >> $HGRCPATH
  $ echo "[diff]" >> $HGRCPATH
  $ echo "git=1" >> $HGRCPATH
  $ hg init repo
  $ cd repo

qimport without file or revision

  $ hg qimport
  abort: no files or revisions specified
  [255]

qimport non-existing-file

  $ hg qimport non-existing-file
  abort: unable to read file non-existing-file
  [255]

qimport null revision

  $ hg qimport -r null
  abort: revision -1 is not mutable
  (see "hg help phases" for details)
  [255]
  $ hg qseries

import email

  $ hg qimport --push -n email - <<EOF
  > From: Username in email <[e-mail]>
  > Subject: [PATCH] Message in email
  > Date: Fri, 02 Jan 1970 00:00:00 +0000
  > 
  > Text before patch.
  > 
  > # HG changeset patch
  > # User Username in patch <[e-mail]>
  > # Date 0 0
  > # Node ID 1a706973a7d84cb549823634a821d9bdf21c6220
  > # Parent  0000000000000000000000000000000000000000
  > First line of commit message.
  > 
  > More text in commit message.
  > --- confuse the diff detection
  > 
  > diff --git a/x b/x
  > new file mode 100644
  > --- /dev/null
  > +++ b/x
  > @@ -0,0 +1,1 @@
  > +new file
  > Text after patch.
  > 
  > EOF
  adding email to series file
  applying email
  now at: email

hg tip -v

  $ hg tip -v
  changeset:   0:1a706973a7d8
  tag:         email
  tag:         qbase
  tag:         qtip
  tag:         tip
  user:        Username in patch <[e-mail]>
  date:        Thu Jan 01 00:00:00 1970 +0000
  files:       x
  description:
  First line of commit message.
  
  More text in commit message.
  
  
  $ hg qpop
  popping email
  patch queue now empty
  $ hg qdelete email

import URL

  $ echo foo >> foo
  $ hg add foo
  $ hg diff > url.diff
  $ hg revert --no-backup foo
  $ rm foo

Under unix: file:///foobar/blah
Under windows: file:///c:/foobar/blah

  $ patchurl=`pwd | tr '\\\\' /`/url.diff
  $ expr "$patchurl" : "\/" > /dev/null || patchurl="/$patchurl"
  $ hg qimport file://"$patchurl"
  adding url.diff to series file
  $ rm url.diff
  $ hg qun
  url.diff

import patch that already exists

  $ echo foo2 >> foo
  $ hg add foo
  $ hg diff > ../url.diff
  $ hg revert --no-backup foo
  $ rm foo
  $ hg qimport ../url.diff
  abort: patch "url.diff" already exists
  [255]
  $ hg qpush
  applying url.diff
  now at: url.diff
  $ cat foo
  foo
  $ hg qpop
  popping url.diff
  patch queue now empty

qimport -f

  $ hg qimport -f ../url.diff
  adding url.diff to series file
  $ hg qpush
  applying url.diff
  now at: url.diff
  $ cat foo
  foo2
  $ hg qpop
  popping url.diff
  patch queue now empty

build diff with CRLF

  $ python ../writelines.py b 5 'a\n' 5 'a\r\n'
  $ hg ci -Am addb
  adding b
  $ python ../writelines.py b 2 'a\n' 10 'b\n' 2 'a\r\n'
  $ hg diff > b.diff
  $ hg up -C
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

qimport CRLF diff

  $ hg qimport b.diff
  adding b.diff to series file
  $ hg qpush
  applying b.diff
  now at: b.diff

try to import --push

  $ cat > appendfoo.diff <<EOF
  > append foo
  > 
  > diff -r 07f494440405 -r 261500830e46 baz
  > --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
  > +++ b/baz	Thu Jan 01 00:00:00 1970 +0000
  > @@ -0,0 +1,1 @@
  > +foo
  > EOF

  $ cat > appendbar.diff <<EOF
  > append bar
  > 
  > diff -r 07f494440405 -r 261500830e46 baz
  > --- a/baz	Thu Jan 01 00:00:00 1970 +0000
  > +++ b/baz	Thu Jan 01 00:00:00 1970 +0000
  > @@ -1,1 +1,2 @@
  >  foo
  > +bar
  > EOF

  $ hg qimport --push appendfoo.diff appendbar.diff
  adding appendfoo.diff to series file
  adding appendbar.diff to series file
  applying appendfoo.diff
  applying appendbar.diff
  now at: appendbar.diff
  $ hg qfin -a
  patch b.diff finalized without changeset message
  $ hg qimport -r 'p1(.)::' -P
  $ hg qpop -a
  popping 3.diff
  popping 2.diff
  patch queue now empty
  $ hg qdel 3.diff
  $ hg qdel -k 2.diff

qimport -e

  $ hg qimport -e 2.diff
  adding 2.diff to series file
  $ hg qdel -k 2.diff

qimport -e --name newname oldexisitingpatch

  $ hg qimport -e --name this-name-is-better 2.diff
  renaming 2.diff to this-name-is-better
  adding this-name-is-better to series file
  $ hg qser
  this-name-is-better
  url.diff

qimport -e --name without --force

  $ cp .hg/patches/this-name-is-better .hg/patches/3.diff
  $ hg qimport -e --name this-name-is-better 3.diff
  abort: patch "this-name-is-better" already exists
  [255]
  $ hg qser
  this-name-is-better
  url.diff

qimport -e --name with --force

  $ hg qimport --force -e --name this-name-is-better 3.diff
  renaming 3.diff to this-name-is-better
  adding this-name-is-better to series file
  $ hg qser
  this-name-is-better
  url.diff

qimport with bad name, should abort before reading file

  $ hg qimport non-existent-file --name .hg
  abort: patch name cannot begin with ".hg"
  [255]

qimport http:// patch with leading slashes in url

set up hgweb

  $ cd ..
  $ hg init served
  $ cd served
  $ echo a > a
  $ hg ci -Am patch
  adding a
  $ hg serve -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
  $ cat hg.pid >> $DAEMON_PIDS

  $ cd ../repo
  $ hg qimport http://localhost:$HGPORT/raw-rev/0///
  adding 0 to series file

check qimport phase:

  $ hg -q qpush
  now at: 0
  $ hg phase qparent
  1: draft
  $ hg qimport -r qparent
  $ hg phase qbase
  1: draft
  $ hg qfinish qbase
  $ echo '[mq]' >> $HGRCPATH
  $ echo 'secret=true' >> $HGRCPATH
  $ hg qimport -r qparent
  $ hg phase qbase
  1: secret

  $ cd ..

  $ "$TESTDIR/killdaemons.py" $DAEMON_PIDS