largefiles: remove meaningless code path for "hg pull --rebase"
This patch removes "--rebase" specific code path for "hg pull" in
"overridepull", because previous patch makes it meaningless: now,
"rebase.rebase" ("orig" invocation in this patch) can
update/commit largefiles safely without "repo._isrebasing = True".
As a side effect of removing "rebase.rebase" invocation in
"overridepull", this patch removes "nothing to rebase ..." message in
"test-largefiles.t", which is shown only when rebase extension is
enabled AFTER largefiles:
before this patch:
1. "dispatch" invokes "pullrebase" of rebase as "hg pull" at
first, because rebase wraps "hg pull" later
2. "pullrebase" invokes "overridepull" of largefiles as "orig",
even though rebase assumes that "orig" is "pull" of commands
3. "overridepull" executes "pull" and "rebase" directly
3.1 "pull" pulls changesets and creates new head "X"
3.2 "rebase" rebases current working parent "Y" on "X"
4. "overridepull" returns to "pullrebase"
5. "pullrebase" tries to rebase, but there is nothing to be done,
because "Y" is already rebased on "X". then, it shows "nothing
to rebase ..."
after this patch:
1. "dispatch" invokes "pullrebase" of rebase as "hg pull"
2. "pullrebase" invokes "overridepull" of largefiles as "orig"
3. "overridepull" executes "pull" as "orig"
4. "overridepull" returns to "pullrebase"
5. revision "Y" is not yet rebased, so "pullrebase" doesn't shows
"nothing to rebase ..."
As another side effect of removing "rebase.rebase" invocation, this
patch fixes
issue3861, which occurs only when rebase extension is
enabled BEFORE largefiles:
before this patch:
1. "dispatch" invokes "overridepull" of largefiles at first,
because largefiles wrap "hg pull" later
2. "overridepull" executes "pull" and "rebase" explicitly
2.1 "pull" pulls changesets and creates new head "X"
2.2 "rebase" rebases current working parent, but fails because
no revision is checked out in
issue3861 case
3. "overridepull" returns to "dispatch" with exit code 1 returned
from "rebase" at (2.2)
4. "hg pull" terminates with exit code 1 unexpectedly
after this patch:
1. "dispatch" invokes "overridepull" of largefiles at first
2. "overridepull" invokes "pullrebase" of rebase as "orig"
3. "pullrebase" invokes "pull" as "orig"
4. "pullrebase" invokes "rebase", and it fails
5. "pullrebase" returns to "overridepull" with exit code 0
(because "pullrebase" ignores result of "pull" and "rebase")
6. "overridepull" returns to "dispatch" with exit code 0 returned
from "rebase" at (5)
7. "hg pull" terminates with exit code 0
Verify that pending changesets are seen by pretxn* hooks but not by other
processes that access the destination repo while the hooks are running.
The hooks (python and external) both reject changesets after some think time,
during which another process runs pull. Each hook creates a file ('notify') to
indicate to the controlling process that it is running; the process removes the
file to indicate the hook can terminate.
init env vars
$ d=`pwd`
$ maxwait=20
utility to run the test - start a push in the background and run pull
$ dotest() {
> rm -f notify
> printf 'push '; hg -R child-push tip --template '{node}\n'
> hg -R child-push -q push > push.out 2>&1 &
>
> # wait for hook to create the notify file
> i=$maxwait
> while [ ! -f notify -a $i != 0 ]; do
> sleep 1
> i=`expr $i - 1`
> done
>
> # run pull
> hg -R child-pull -q pull
> rc=$?
>
> # tell hook to finish; notify should exist.
> rm notify
> wait
>
> cat push.out
> printf 'pull '; hg -R child-pull tip --template '{node}\n'
> return $rc
> }
python hook
$ cat <<EOF > reject.py
> import os, time
> from mercurial import ui, localrepo
> def rejecthook(ui, repo, hooktype, node, **opts):
> ui.write('hook %s\\n' % repo['tip'].hex())
> # create the notify file so caller knows we're running
> fpath = os.path.join('$d', 'notify')
> f = open(fpath, 'w')
> f.close()
> # wait for ack - caller should delete the notify file
> i = $maxwait
> while os.path.exists(fpath) and i > 0:
> time.sleep(1)
> i -= 1
> return True # reject the changesets
> EOF
external hook
$ cat <<EOF > reject.sh
> printf 'hook '; hg tip --template '{node}\\n'
> # create the notify file so caller knows we're running
> fpath=$d/notify
> touch \$fpath
> # wait for ack - caller should delete the notify file
> i=$maxwait
> while [ -f \$fpath -a \$i != 0 ]; do
> sleep 1
> i=\`expr \$i - 1\`
> done
> exit 1 # reject the changesets
> EOF
create repos
$ hg init parent
$ hg clone -q parent child-push
$ hg clone -q parent child-pull
$ echo a > child-push/a
$ hg -R child-push add child-push/a
$ hg -R child-push commit -m a -d '1000000 0'
test python hook
$ cat <<EOF > parent/.hg/hgrc
> [extensions]
> reject = $d/reject.py
> [hooks]
> pretxnchangegroup = python:reject.rejecthook
> EOF
$ dotest
push 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
hook 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
transaction abort!
rollback completed
abort: pretxnchangegroup hook failed
pull 0000000000000000000000000000000000000000
test external hook
$ cat <<EOF > parent/.hg/hgrc
> [hooks]
> pretxnchangegroup = sh $d/reject.sh
> EOF
$ dotest
push 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
hook 29b62aeb769fdf78d8d9c5f28b017f76d7ef824b
transaction abort!
rollback completed
abort: pretxnchangegroup hook exited with status 1
pull 0000000000000000000000000000000000000000