view tests/test-fastannotate-protocol.t @ 46326:3e23794b9e1c

run-tests: work around the Windows firewall popup for server processes

Windows doesn't have a `python3` executable, so cc0b332ab9fc attempted to work
around the issue by copying the current python to `python3.exe`.  That put it in
`_tmpbindir` because of failures in `test-run-tests.t` when using `_bindir`,
which looked like a process was trying to open it to write out a copy while it
was in use.  (Interestingly, I couldn't reproduce this running the test by
itself in a loop for a couple of hours, but it happens constantly when running
all tests.)  The problem with using `_tmpbindir` is that it is the randomly
generated path for the test run, and instead of Windows Firewall remembering the
executable signature or image hash when allowing the process to open a server
port, it apparently remembers the image path.  That means every run will trigger
a popup to allow it, which is bad for firing off a test run and walking away.

I tried to symlink to the python executable, but that currently requires admin
priviledges[1].  This will prompt the first time if the underlying python binary
has never opened a server port, but appears to avoid it on subsequent runs.

[1] https://bugs.python.org/issue40687

Differential Revision: https://phab.mercurial-scm.org/D9815

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > ssh = "$PYTHON" "$TESTDIR/dummyssh"
  > [extensions]
  > fastannotate=
  > [fastannotate]
  > mainbranch=@
  > EOF

setup the server repo

  $ hg init repo-server
  $ cd repo-server
  $ cat >> .hg/hgrc << EOF
  > [fastannotate]
  > server=1
  > EOF
  $ for i in 1 2 3 4; do
  >   echo $i >> a
  >   hg commit -A -m $i a
  > done
  $ [ -d .hg/fastannotate ]
  [1]
  $ hg bookmark @
  $ cd ..

setup the local repo

  $ hg clone 'ssh://user@dummy/repo-server' repo-local -q
  $ cd repo-local
  $ cat >> .hg/hgrc << EOF
  > [fastannotate]
  > client=1
  > clientfetchthreshold=0
  > EOF
  $ [ -d .hg/fastannotate ]
  [1]
  $ hg fastannotate a --debug
  running * (glob)
  sending hello command
  sending between command
  remote: * (glob) (?)
  remote: capabilities: * (glob)
  remote: * (glob) (?)
  sending protocaps command
  fastannotate: requesting 1 files
  sending getannotate command
  fastannotate: writing 112 bytes to fastannotate/default/a.l
  fastannotate: writing 94 bytes to fastannotate/default/a.m
  fastannotate: a: using fast path (resolved fctx: True)
  0: 1
  1: 2
  2: 3
  3: 4

the cache could be reused and no download is necessary

  $ hg fastannotate a --debug
  fastannotate: a: using fast path (resolved fctx: True)
  0: 1
  1: 2
  2: 3
  3: 4

if the client agrees where the head of the master branch is, no re-download
happens even if the client has more commits

  $ echo 5 >> a
  $ hg commit -m 5
  $ hg bookmark -r 3 @ -f
  $ hg fastannotate a --debug
  0: 1
  1: 2
  2: 3
  3: 4
  4: 5

if the client has a different "@" (head of the master branch) and "@" is ahead
of the server, the server can detect things are unchanged and does not return
full contents (not that there is no "writing ... to fastannotate"), but the
client can also build things up on its own (causing diverge)

  $ hg bookmark -r 4 @ -f
  $ hg fastannotate a --debug
  running * (glob)
  sending hello command
  sending between command
  remote: * (glob) (?)
  remote: capabilities: * (glob)
  remote: * (glob) (?)
  sending protocaps command
  fastannotate: requesting 1 files
  sending getannotate command
  fastannotate: a: 1 new changesets in the main branch
  0: 1
  1: 2
  2: 3
  3: 4
  4: 5

if the client has a different "@" which is behind the server. no download is
necessary

  $ hg fastannotate a --debug --config fastannotate.mainbranch=2
  fastannotate: a: using fast path (resolved fctx: True)
  0: 1
  1: 2
  2: 3
  3: 4
  4: 5

define fastannotate on-disk paths

  $ p1=.hg/fastannotate/default
  $ p2=../repo-server/.hg/fastannotate/default

revert bookmark change so the client is behind the server

  $ hg bookmark -r 2 @ -f

in the "fctx" mode with the "annotate" command, the client also downloads the
cache. but not in the (default) "fastannotate" mode.

  $ rm $p1/a.l $p1/a.m
  $ hg annotate a --debug | grep 'fastannotate: writing'
  [1]
  $ hg annotate a --config fastannotate.modes=fctx --debug | grep 'fastannotate: writing' | sort
  fastannotate: writing 112 bytes to fastannotate/default/a.l
  fastannotate: writing 94 bytes to fastannotate/default/a.m

the fastannotate cache (built server-side, downloaded client-side) in two repos
have the same content (because the client downloads from the server)

  $ diff $p1/a.l $p2/a.l
  $ diff $p1/a.m $p2/a.m

in the "fctx" mode, the client could also build the cache locally

  $ hg annotate a --config fastannotate.modes=fctx --debug --config fastannotate.mainbranch=4 | grep fastannotate
  fastannotate: requesting 1 files
  fastannotate: a: 1 new changesets in the main branch

the server would rebuild broken cache automatically

  $ cp $p2/a.m $p2/a.m.bak
  $ echo BROKEN1 > $p1/a.m
  $ echo BROKEN2 > $p2/a.m
  $ hg fastannotate a --debug | grep 'fastannotate: writing' | sort
  fastannotate: writing 112 bytes to fastannotate/default/a.l
  fastannotate: writing 94 bytes to fastannotate/default/a.m
  $ diff $p1/a.m $p2/a.m
  $ diff $p2/a.m $p2/a.m.bak

use the "debugbuildannotatecache" command to build annotate cache

  $ rm -rf $p1 $p2
  $ hg --cwd ../repo-server debugbuildannotatecache a --debug
  fastannotate: a: 4 new changesets in the main branch
  $ hg --cwd ../repo-local debugbuildannotatecache a --debug
  running * (glob)
  sending hello command
  sending between command
  remote: * (glob) (?)
  remote: capabilities: * (glob)
  remote: * (glob) (?)
  sending protocaps command
  fastannotate: requesting 1 files
  sending getannotate command
  fastannotate: writing * (glob)
  fastannotate: writing * (glob)
  $ diff $p1/a.l $p2/a.l
  $ diff $p1/a.m $p2/a.m

with the clientfetchthreshold config option, the client can build up the cache
without downloading from the server

  $ rm -rf $p1
  $ hg fastannotate a --debug --config fastannotate.clientfetchthreshold=10
  fastannotate: a: 3 new changesets in the main branch
  0: 1
  1: 2
  2: 3
  3: 4
  4: 5

if the fastannotate directory is not writable, the fctx mode still works

  $ rm -rf $p1
  $ touch $p1
  $ hg annotate a --debug --traceback --config fastannotate.modes=fctx
  fastannotate: a: cache broken and deleted
  fastannotate: prefetch failed: * (glob)
  fastannotate: a: cache broken and deleted
  fastannotate: falling back to the vanilla annotate: * (glob)
  0: 1
  1: 2
  2: 3
  3: 4
  4: 5

with serverbuildondemand=False, the server will not build anything

  $ cat >> ../repo-server/.hg/hgrc <<EOF
  > [fastannotate]
  > serverbuildondemand=False
  > EOF
  $ rm -rf $p1 $p2
  $ hg fastannotate a --debug | grep 'fastannotate: writing'
  [1]