Mercurial > hg
view tests/test-rebase-interruptions.t @ 37048:fc5e261915b9
wireproto: require POST for all HTTPv2 requests
Wire protocol version 1 transfers argument data via request
headers by default. This has historically caused problems because
servers institute limits on the length of individual HTTP headers
as well as the total size of all request headers. Mercurial servers
can advertise the maximum length of an individual header. But
there's no guarantee any intermediate HTTP agents will accept
headers up to that length.
In the existing wire protocol, server operators typically also
key off the HTTP request method to implement authentication.
For example, GET requests translate to read-only requests and
can be allowed. But read-write commands must use POST and require
authentication. This has typically worked because the only wire
protocol commands that use POST modify the repo (e.g. the
"unbundle" command).
There is an experimental feature to enable clients to transmit
argument data via POST request bodies. This is technically a
better and more robust solution. But we can't enable it by default
because of servers assuming POST means write access.
In version 2 of the wire protocol, the permissions of a request
are encoded in the URL. And with it being a new protocol in a new
URL space, we're not constrained by backwards compatibility
requirements.
This commit adopts the technically superior mechanism of using
HTTP request bodies to send argument data by requiring POST for
all commands. Strictly speaking, it may be possible to send
request bodies on GET requests. But my experience is that not all
HTTP stacks support this. POST pretty much always works. Using POST
for read-only operations does sacrifice some RESTful design
purity. But this API cares about practicality, not about being
in Roy T. Fielding's REST ivory tower.
There's a chance we may relax this restriction in the future. But
for now, I want to see how far we can get with a POST only API.
Differential Revision: https://phab.mercurial-scm.org/D2837
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 13 Mar 2018 11:57:43 -0700 |
parents | 9457c395fcbb |
children | e9e61fbac787 |
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$ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > > [phases] > publish=False > > [alias] > tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n" > tglogp = log -G --template "{rev}: {node|short} {phase} '{desc}' {branches}\n" > EOF $ hg init a $ cd a $ echo A > A $ hg ci -Am A adding A $ echo B > B $ hg ci -Am B adding B $ echo C >> A $ hg ci -m C $ hg up -q -C 0 $ echo D >> A $ hg ci -m D created new head $ echo E > E $ hg ci -Am E adding E $ cd .. Changes during an interruption - continue: $ hg clone -q -u . a a1 $ cd a1 $ hg tglog @ 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' Rebasing B onto E: $ hg rebase -s 1 -d 4 rebasing 1:27547f69f254 "B" rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Force a commit on C during the interruption: $ hg up -q -C 2 --config 'extensions.rebase=!' $ echo 'Extra' > Extra $ hg add Extra $ hg ci -m 'Extra' --config 'extensions.rebase=!' Force this commit onto secret phase $ hg phase --force --secret 6 $ hg tglogp @ 6: deb5d2f93d8b secret 'Extra' | | o 5: 45396c49d53b draft 'B' | | | o 4: ae36e8e3dfd7 draft 'E' | | | o 3: 46b37eabc604 draft 'D' | | o | 2: 965c486023db draft 'C' | | o | 1: 27547f69f254 draft 'B' |/ o 0: 4a2df7238c3b draft 'A' Resume the rebasing: $ hg rebase --continue already rebased 1:27547f69f254 "B" as 45396c49d53b rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Solve the conflict and go on: $ echo 'conflict solved' > A $ rm A.orig $ hg resolve -m A (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue already rebased 1:27547f69f254 "B" as 45396c49d53b rebasing 2:965c486023db "C" warning: orphaned descendants detected, not stripping 27547f69f254, 965c486023db $ hg tglogp o 7: d2d25e26288e draft 'C' | | o 6: deb5d2f93d8b secret 'Extra' | | o | 5: 45396c49d53b draft 'B' | | @ | 4: ae36e8e3dfd7 draft 'E' | | o | 3: 46b37eabc604 draft 'D' | | | o 2: 965c486023db draft 'C' | | | o 1: 27547f69f254 draft 'B' |/ o 0: 4a2df7238c3b draft 'A' $ cd .. Changes during an interruption - abort: $ hg clone -q -u . a a2 $ cd a2 $ hg tglog @ 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' Rebasing B onto E: $ hg rebase -s 1 -d 4 rebasing 1:27547f69f254 "B" rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Force a commit on B' during the interruption: $ hg up -q -C 5 --config 'extensions.rebase=!' $ echo 'Extra' > Extra $ hg add Extra $ hg ci -m 'Extra' --config 'extensions.rebase=!' $ hg tglog @ 6: 402ee3642b59 'Extra' | o 5: 45396c49d53b 'B' | o 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' Abort the rebasing: $ hg rebase --abort warning: new changesets detected on destination branch, can't strip rebase aborted $ hg tglog @ 6: 402ee3642b59 'Extra' | o 5: 45396c49d53b 'B' | o 4: ae36e8e3dfd7 'E' | o 3: 46b37eabc604 'D' | | o 2: 965c486023db 'C' | | | o 1: 27547f69f254 'B' |/ o 0: 4a2df7238c3b 'A' $ cd .. Changes during an interruption - abort (again): $ hg clone -q -u . a a3 $ cd a3 $ hg tglogp @ 4: ae36e8e3dfd7 draft 'E' | o 3: 46b37eabc604 draft 'D' | | o 2: 965c486023db draft 'C' | | | o 1: 27547f69f254 draft 'B' |/ o 0: 4a2df7238c3b draft 'A' Rebasing B onto E: $ hg rebase -s 1 -d 4 rebasing 1:27547f69f254 "B" rebasing 2:965c486023db "C" merging A warning: conflicts while merging A! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] Change phase on B and B' $ hg up -q -C 5 --config 'extensions.rebase=!' $ hg phase --public 1 $ hg phase --public 5 $ hg phase --secret -f 2 $ hg tglogp @ 5: 45396c49d53b public 'B' | o 4: ae36e8e3dfd7 public 'E' | o 3: 46b37eabc604 public 'D' | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' Abort the rebasing: $ hg rebase --abort warning: can't clean up public changesets 45396c49d53b rebase aborted $ hg tglogp @ 5: 45396c49d53b public 'B' | o 4: ae36e8e3dfd7 public 'E' | o 3: 46b37eabc604 public 'D' | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' Test rebase interrupted by hooks $ hg up 2 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo F > F $ hg add F $ hg ci -m F $ cd .. (precommit version) $ cp -R a3 hook-precommit $ cd hook-precommit $ hg rebase --source 2 --dest 5 --tool internal:other --config 'hooks.precommit=hg status | grep "M A"' rebasing 2:965c486023db "C" M A rebasing 6:a0b2430ebfb8 "F" (tip) abort: precommit hook exited with status 1 [255] $ hg tglogp @ 7: 401ccec5e39f secret 'C' | | @ 6: a0b2430ebfb8 secret 'F' | | o | 5: 45396c49d53b public 'B' | | o | 4: ae36e8e3dfd7 public 'E' | | o | 3: 46b37eabc604 public 'D' | | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ hg rebase --continue already rebased 2:965c486023db "C" as 401ccec5e39f rebasing 6:a0b2430ebfb8 "F" saved backup bundle to $TESTTMP/hook-precommit/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg $ hg tglogp @ 6: 6e92a149ac6b secret 'F' | o 5: 401ccec5e39f secret 'C' | o 4: 45396c49d53b public 'B' | o 3: ae36e8e3dfd7 public 'E' | o 2: 46b37eabc604 public 'D' | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ cd .. (pretxncommit version) $ cp -R a3 hook-pretxncommit $ cd hook-pretxncommit #if windows $ NODE="%HG_NODE%" #else $ NODE="\$HG_NODE" #endif $ hg rebase --source 2 --dest 5 --tool internal:other --config "hooks.pretxncommit=hg log -r $NODE | grep \"summary: C\"" rebasing 2:965c486023db "C" summary: C rebasing 6:a0b2430ebfb8 "F" (tip) transaction abort! rollback completed abort: pretxncommit hook exited with status 1 [255] $ hg tglogp @ 7: 401ccec5e39f secret 'C' | | @ 6: a0b2430ebfb8 secret 'F' | | o | 5: 45396c49d53b public 'B' | | o | 4: ae36e8e3dfd7 public 'E' | | o | 3: 46b37eabc604 public 'D' | | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ hg rebase --continue already rebased 2:965c486023db "C" as 401ccec5e39f rebasing 6:a0b2430ebfb8 "F" saved backup bundle to $TESTTMP/hook-pretxncommit/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg $ hg tglogp @ 6: 6e92a149ac6b secret 'F' | o 5: 401ccec5e39f secret 'C' | o 4: 45396c49d53b public 'B' | o 3: ae36e8e3dfd7 public 'E' | o 2: 46b37eabc604 public 'D' | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ cd .. (pretxnclose version) $ cp -R a3 hook-pretxnclose $ cd hook-pretxnclose $ hg rebase --source 2 --dest 5 --tool internal:other --config 'hooks.pretxnclose=hg log -r tip | grep "summary: C"' rebasing 2:965c486023db "C" summary: C rebasing 6:a0b2430ebfb8 "F" (tip) transaction abort! rollback completed abort: pretxnclose hook exited with status 1 [255] $ hg tglogp @ 7: 401ccec5e39f secret 'C' | | @ 6: a0b2430ebfb8 secret 'F' | | o | 5: 45396c49d53b public 'B' | | o | 4: ae36e8e3dfd7 public 'E' | | o | 3: 46b37eabc604 public 'D' | | | o 2: 965c486023db secret 'C' | | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ hg rebase --continue already rebased 2:965c486023db "C" as 401ccec5e39f rebasing 6:a0b2430ebfb8 "F" saved backup bundle to $TESTTMP/hook-pretxnclose/.hg/strip-backup/965c486023db-aa6250e7-rebase.hg $ hg tglogp @ 6: 6e92a149ac6b secret 'F' | o 5: 401ccec5e39f secret 'C' | o 4: 45396c49d53b public 'B' | o 3: ae36e8e3dfd7 public 'E' | o 2: 46b37eabc604 public 'D' | | o 1: 27547f69f254 public 'B' |/ o 0: 4a2df7238c3b public 'A' $ cd .. Make sure merge state is cleaned up after a no-op rebase merge (issue5494) $ hg init repo $ cd repo $ echo a > a $ hg commit -qAm base $ echo b >> a $ hg commit -qm b $ hg up '.^' 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo c >> a $ hg commit -qm c $ hg rebase -s 1 -d 2 --noninteractive rebasing 1:fdaca8533b86 "b" merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ echo a > a $ echo c >> a $ hg resolve --mark a (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue rebasing 1:fdaca8533b86 "b" note: rebase of 1:fdaca8533b86 created no changes to commit saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg $ hg resolve --list $ test -d .hg/merge [1] Now try again with --collapse $ hg unbundle -q .hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg $ hg rebase -s 2 -d 1 --noninteractive --collapse rebasing 2:fdaca8533b86 "b" (tip) merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ echo a > a $ echo c >> a $ hg resolve --mark a (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue rebasing 2:fdaca8533b86 "b" (tip) saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fdaca8533b86-7fd70513-rebase.hg $ hg resolve --list $ test -d .hg/merge [1]