wireprotoserver: ensure that output stream gets flushed on exception
Previously flush was happening due to Python finalizer being run on
`BufferedWriter`. With upgrade to Python 3.11 this started randomly
failing.
My guess is that the finalizer on the raw `FileIO` object may
be running before the finalizer of `BufferedWriter` has a chance to run.
At any rate, since we're not relying on finalizers in the happy case
we should also not rely on them in case of exception.
============================================================================
Pulling from modern to a non-general delta target (and other related checks)
============================================================================
There is various issue that can arise when we update the code with modern
storage in mind while working on delta processing. So this file is meant for
various scenario that might break in the future or have break in the past.
Setup
=====
Create a modern server with an older clone
$ cat << EOF >> $HGRCPATH
> [command-templates]
> log = "{desc} {tags}\n"
> EOF
$ hg init server
$ hg clone --quiet --pull server client --config format.usegeneraldelta=no
$ hg debugformat -R client | grep generaldelta
generaldelta: no
Create some complexe history
$ cd server
$ hg debugbuilddag -n '.+3:a$.+5:b/a:k$.+7:c/b:l$.+6:d/a:m<k+6/l+1/m'
$ hg log -G
o r36 tip
|\
| o r35
| |
| o r34
| |\
| | o r33
| | |
| | o r32
| | |
| | o r31
| | |
| | o r30
| | |
| | o r29
| | |
| | o r28
| | |
o | | r27 m
|\ \ \
| o | | r26 d
| | | |
| o | | r25
| | | |
| o | | r24
| | | |
| o | | r23
| | | |
| o | | r22
| | | |
| o | | r21
| | | |
| o | | r20
| / /
| o | r19 l
| |\ \
| | o | r18 c
| | | |
| | o | r17
| | | |
| | o | r16
| | | |
| | o | r15
| | | |
| | o | r14
| | | |
| | o | r13
| | | |
| | o | r12
| | | |
| | o | r11
| | /
+---o r10 k
| |/
| o r9 b
| |
| o r8
| |
| o r7
| |
| o r6
| |
| o r5
| |
| o r4
|
o r3 a
|
o r2
|
o r1
|
o r0
$ cd ..
Pull it in the client
=====================
pull with default value
-----------------------
$ cp -R client client-simple-pull
$ hg -R client-simple-pull pull
pulling from $TESTTMP/server
requesting all changes
adding changesets
adding manifests
adding file changes
added 37 changesets with 37 changes to 37 files
new changesets 61246295ee1e:b4b117cbbcf3
(run 'hg update' to get a working copy)
$ hg -R client-simple-pull verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checking dirstate
checked 37 changesets with 37 changes to 37 files
pull with "no-reuse" policy
---------------------------
$ cp -R client client-no-reuse
$ hg -R client-no-reuse pull --config paths.default:pulled-delta-reuse-policy=no-reuse
pulling from $TESTTMP/server
requesting all changes
adding changesets
adding manifests
adding file changes
added 37 changesets with 37 changes to 37 files
new changesets 61246295ee1e:b4b117cbbcf3
(run 'hg update' to get a working copy)
$ hg -R client-no-reuse verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checking dirstate
checked 37 changesets with 37 changes to 37 files
pull with "try-base" policy
---------------------------
$ cp -R client client-try-base
$ hg -R client-try-base pull --config paths.default:pulled-delta-reuse-policy=try-base
pulling from $TESTTMP/server
requesting all changes
adding changesets
adding manifests
adding file changes
added 37 changesets with 37 changes to 37 files
new changesets 61246295ee1e:b4b117cbbcf3
(run 'hg update' to get a working copy)
$ hg -R client-try-base verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checking dirstate
checked 37 changesets with 37 changes to 37 files
pull with "forced" policy
-------------------------
$ cp -R client client-forced
$ hg -R client-forced paths --config paths.default:pulled-delta-reuse-policy=forced
default = $TESTTMP/server
default:pulled-delta-reuse-policy = forced
$ hg -R client-forced pull --config paths.default:pulled-delta-reuse-policy=forced
pulling from $TESTTMP/server
requesting all changes
adding changesets
adding manifests
adding file changes
added 37 changesets with 37 changes to 37 files
new changesets 61246295ee1e:b4b117cbbcf3
(run 'hg update' to get a working copy)
$ hg -R client-forced verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checking dirstate
checked 37 changesets with 37 changes to 37 files