Mercurial > hg
view tests/test-automv.t @ 37631:2f626233859b
wireproto: implement batching on peer executor interface
This is a bit more complicated than non-batch requests because we
need to buffer sends until the last request arrives *and* we need
to support resolving futures as data arrives from the remote.
In a classical concurrent.futures executor model, the future
"starts" as soon as it is submitted. However, we have nothing to
start until the last command is submitted.
If we did nothing, calling result() would deadlock, since the future
hasn't "started." So in the case where we queue the command, we return
a special future type whose result() will trigger sendcommands().
This eliminates the deadlock potential. It also serves as a check
against callers who may be calling result() prematurely, as it will
prevent any subsequent callcommands() from working. This behavior
is slightly annoying and a bit restrictive. But it's the world
that half duplex connections forces on us.
In order to support streaming responses, we were previously using
a generator. But with a futures-based API, we're using futures
and not generators. So in order to get streaming, we need a
background thread to read data from the server.
The approach taken in this patch is to leverage the ThreadPoolExecutor
from concurrent.futures for managing a background thread. We create
an executor and future that resolves when all response data is
processed (or an error occurs). When exiting the context manager,
we wait on that background reading before returning.
I was hoping we could manually spin up a threading.Thread and this
would be simple. But I ran into a few deadlocks when implementing.
After looking at the source code to concurrent.futures, I figured
it would just be easier to use a ThreadPoolExecutor than implement
all the code needed to manually manage a thread.
To prove this works, a use of the batch API in discovery has been
updated.
Differential Revision: https://phab.mercurial-scm.org/D3269
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Fri, 13 Apr 2018 11:02:34 -0700 |
parents | 20f533a92eda |
children |
line wrap: on
line source
Tests for the automv extension; detect moved files at commit time. $ cat >> $HGRCPATH << EOF > [extensions] > automv= > rebase= > EOF Setup repo $ hg init repo $ cd repo Test automv command for commit $ printf 'foo\nbar\nbaz\n' > a.txt $ hg add a.txt $ hg commit -m 'init repo with a' mv/rm/add $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ hg status -C A b.txt R a.txt $ hg commit -m 'msg' detected move of 1 files $ hg status --change . -C A b.txt a.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved mv/rm/add/modif $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ printf '\n' >> b.txt $ hg status -C A b.txt R a.txt $ hg commit -m 'msg' detected move of 1 files created new head $ hg status --change . -C A b.txt a.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved mv/rm/add/modif $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ printf '\nfoo\n' >> b.txt $ hg status -C A b.txt R a.txt $ hg commit -m 'msg' created new head $ hg status --change . -C A b.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved mv/rm/add/modif/changethreshold $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ printf '\nfoo\n' >> b.txt $ hg status -C A b.txt R a.txt $ hg commit --config automv.similarity='60' -m 'msg' detected move of 1 files created new head $ hg status --change . -C A b.txt a.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved mv $ mv a.txt b.txt $ hg status -C ! a.txt ? b.txt $ hg commit -m 'msg' nothing changed (1 missing files, see 'hg status') [1] $ hg status -C ! a.txt ? b.txt $ hg revert -aqC $ rm b.txt mv/rm/add/notincommitfiles $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ echo 'bar' > c.txt $ hg add c.txt $ hg status -C A b.txt A c.txt R a.txt $ hg commit c.txt -m 'msg' created new head $ hg status --change . -C A c.txt $ hg status -C A b.txt R a.txt $ hg up -r 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg rm a.txt $ echo 'bar' > c.txt $ hg add c.txt $ hg commit -m 'msg' detected move of 1 files created new head $ hg status --change . -C A b.txt a.txt A c.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 2 files removed, 0 files unresolved mv/rm/add/--no-automv $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ hg status -C A b.txt R a.txt $ hg commit --no-automv -m 'msg' created new head $ hg status --change . -C A b.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved Test automv command for commit --amend mv/rm/add $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ hg status -C A b.txt R a.txt $ hg commit --amend -m 'amended' detected move of 1 files saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A b.txt a.txt A c.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 2 files removed, 0 files unresolved mv/rm/add/modif $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ printf '\n' >> b.txt $ hg status -C A b.txt R a.txt $ hg commit --amend -m 'amended' detected move of 1 files saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A b.txt a.txt A c.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 2 files removed, 0 files unresolved mv/rm/add/modif $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ printf '\nfoo\n' >> b.txt $ hg status -C A b.txt R a.txt $ hg commit --amend -m 'amended' saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A b.txt A c.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 2 files removed, 0 files unresolved mv/rm/add/modif/changethreshold $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ printf '\nfoo\n' >> b.txt $ hg status -C A b.txt R a.txt $ hg commit --amend --config automv.similarity='60' -m 'amended' detected move of 1 files saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A b.txt a.txt A c.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 2 files removed, 0 files unresolved mv $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg status -C ! a.txt ? b.txt $ hg commit --amend -m 'amended' saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status -C ! a.txt ? b.txt $ hg up -Cr 0 1 files updated, 0 files merged, 1 files removed, 0 files unresolved mv/rm/add/notincommitfiles $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ echo 'bar' > d.txt $ hg add d.txt $ hg status -C A b.txt A d.txt R a.txt $ hg commit --amend -m 'amended' d.txt saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A c.txt A d.txt $ hg status -C A b.txt R a.txt $ hg commit --amend -m 'amended' detected move of 1 files saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A b.txt a.txt A c.txt A d.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 3 files removed, 0 files unresolved mv/rm/add/--no-automv $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg rm a.txt $ hg add b.txt $ hg status -C A b.txt R a.txt $ hg commit --amend -m 'amended' --no-automv saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A b.txt A c.txt R a.txt $ hg up -r 0 1 files updated, 0 files merged, 2 files removed, 0 files unresolved mv/rm/commit/add/amend $ echo 'c' > c.txt $ hg add c.txt $ hg commit -m 'revision to amend to' created new head $ mv a.txt b.txt $ hg rm a.txt $ hg status -C R a.txt ? b.txt $ hg commit -m "removed a" $ hg add b.txt $ hg commit --amend -m 'amended' saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-amend.hg (glob) $ hg status --change . -C A b.txt R a.txt error conditions $ cat >> $HGRCPATH << EOF > [automv] > similarity=110 > EOF $ hg commit -m 'revision to amend to' abort: automv.similarity must be between 0 and 100 [255]