debugcommands: introduce actions to perform deterministic reads
"readavailable" is useful as a debugging device to see what data is
available on a pipe. But the mechanism isn't deterministic because
what's available on a pipe is highly conditional on timing, system
load, OS behavior, etc. This makes it not suitable for tests.
We introduce "ereadline," "read," and "eread" for performing
deterministic I/O operations (at least on blocking file descriptors).
We stop short of converting existing consumers of "readavailable"
in tests because we're working out race conditions and deadlocks
on Windows. But the goal is to eventually move tests away from
"readavailable" to these new APIs.
Differential Revision: https://phab.mercurial-scm.org/D2720
#require killdaemons
$ hg clone http://localhost:$HGPORT/ copy
abort: * (glob)
[255]
$ test -d copy
[1]
This server doesn't do range requests so it's basically only good for
one pull
$ $PYTHON "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid \
> --logfile server.log
$ cat dumb.pid >> $DAEMON_PIDS
$ hg init remote
$ cd remote
$ echo foo > bar
$ echo c2 > '.dotfile with spaces'
$ hg add
adding .dotfile with spaces
adding bar
$ hg commit -m"test"
$ hg tip
changeset: 0:02770d679fb8
tag: tip
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: test
$ cd ..
$ hg clone static-http://localhost:$HGPORT/remote local
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files
new changesets 02770d679fb8
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd local
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
2 files, 1 changesets, 2 total revisions
$ cat bar
foo
$ cd ../remote
$ echo baz > quux
$ hg commit -A -mtest2
adding quux
check for HTTP opener failures when cachefile does not exist
$ rm .hg/cache/*
$ cd ../local
$ cat >> .hg/hgrc <<EOF
> [hooks]
> changegroup = sh -c "printenv.py changegroup"
> EOF
$ hg pull
pulling from static-http://localhost:$HGPORT/remote
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
new changesets 4ac2e3648604
changegroup hook: HG_HOOKNAME=changegroup HG_HOOKTYPE=changegroup HG_NODE=4ac2e3648604439c580c69b09ec9d93a88d93432 HG_NODE_LAST=4ac2e3648604439c580c69b09ec9d93a88d93432 HG_SOURCE=pull HG_TXNID=TXN:$ID$ HG_URL=http://localhost:$HGPORT/remote
(run 'hg update' to get a working copy)
trying to push
$ hg update
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo more foo >> bar
$ hg commit -m"test"
$ hg push
pushing to static-http://localhost:$HGPORT/remote
abort: destination does not support push
[255]
trying clone -r
$ cd ..
$ hg clone -r doesnotexist static-http://localhost:$HGPORT/remote local0
abort: unknown revision 'doesnotexist'!
[255]
$ hg clone -r 0 static-http://localhost:$HGPORT/remote local0
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files
new changesets 02770d679fb8
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
test with "/" URI (issue747) and subrepo
$ hg init
$ hg init sub
$ touch sub/test
$ hg -R sub commit -A -m "test"
adding test
$ hg -R sub tag not-empty
$ echo sub=sub > .hgsub
$ echo a > a
$ hg add a .hgsub
$ hg -q ci -ma
$ hg clone static-http://localhost:$HGPORT/ local2
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 3 changes to 3 files
new changesets a9ebfbe8e587
updating to branch default
cloning subrepo sub from static-http://localhost:$HGPORT/sub
requesting all changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 2 files
new changesets be090ea66256:322ea90975df
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd local2
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 1 changesets, 3 total revisions
checking subrepo links
$ cat a
a
$ hg paths
default = static-http://localhost:$HGPORT/
test with empty repo (issue965)
$ cd ..
$ hg init remotempty
$ hg clone static-http://localhost:$HGPORT/remotempty local3
no changes found
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd local3
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
0 files, 0 changesets, 0 total revisions
$ hg paths
default = static-http://localhost:$HGPORT/remotempty
test with non-repo
$ cd ..
$ mkdir notarepo
$ hg clone static-http://localhost:$HGPORT/notarepo local3
abort: 'http://localhost:$HGPORT/notarepo' does not appear to be an hg repository!
[255]
Clone with tags and branches works
$ hg init remote-with-names
$ cd remote-with-names
$ echo 0 > foo
$ hg -q commit -A -m initial
$ echo 1 > foo
$ hg commit -m 'commit 1'
$ hg -q up 0
$ hg branch mybranch
marked working directory as branch mybranch
(branches are permanent and global, did you want a bookmark?)
$ echo 2 > foo
$ hg commit -m 'commit 2 (mybranch)'
$ hg tag -r 1 'default-tag'
$ hg tag -r 2 'branch-tag'
$ cd ..
$ hg clone static-http://localhost:$HGPORT/remote-with-names local-with-names
requesting all changes
adding changesets
adding manifests
adding file changes
added 5 changesets with 5 changes to 2 files (+1 heads)
new changesets 68986213bd44:0c325bd2b5a7
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Clone a specific branch works
$ hg clone -r mybranch static-http://localhost:$HGPORT/remote-with-names local-with-names-branch
adding changesets
adding manifests
adding file changes
added 4 changesets with 4 changes to 2 files
new changesets 68986213bd44:0c325bd2b5a7
updating to branch mybranch
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
Clone a specific tag works
$ hg clone -r default-tag static-http://localhost:$HGPORT/remote-with-names local-with-names-tag
adding changesets
adding manifests
adding file changes
added 2 changesets with 2 changes to 1 files
new changesets 68986213bd44:4ee3fcef1c80
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ killdaemons.py
List of files accessed over HTTP:
$ cat server.log | sed -n -e 's|.*GET \(/[^ ]*\).*|\1|p' | sort -u
/.hg/bookmarks
/.hg/bookmarks.current
/.hg/cache/hgtagsfnodes1
/.hg/cache/rbc-names-v1
/.hg/cache/rbc-revs-v1
/.hg/requires
/.hg/store/00changelog.i
/.hg/store/00manifest.i
/.hg/store/data/%7E2ehgsub.i
/.hg/store/data/%7E2ehgsubstate.i
/.hg/store/data/a.i
/notarepo/.hg/00changelog.i
/notarepo/.hg/requires
/remote-with-names/.hg/bookmarks
/remote-with-names/.hg/bookmarks.current
/remote-with-names/.hg/cache/branch2-served
/remote-with-names/.hg/cache/hgtagsfnodes1
/remote-with-names/.hg/cache/rbc-names-v1
/remote-with-names/.hg/cache/rbc-revs-v1
/remote-with-names/.hg/cache/tags2-served
/remote-with-names/.hg/localtags
/remote-with-names/.hg/requires
/remote-with-names/.hg/store/00changelog.i
/remote-with-names/.hg/store/00manifest.i
/remote-with-names/.hg/store/data/%7E2ehgtags.i
/remote-with-names/.hg/store/data/foo.i
/remote/.hg/bookmarks
/remote/.hg/bookmarks.current
/remote/.hg/cache/branch2-base
/remote/.hg/cache/branch2-immutable
/remote/.hg/cache/branch2-served
/remote/.hg/cache/hgtagsfnodes1
/remote/.hg/cache/rbc-names-v1
/remote/.hg/cache/rbc-revs-v1
/remote/.hg/cache/tags2-served
/remote/.hg/localtags
/remote/.hg/requires
/remote/.hg/store/00changelog.i
/remote/.hg/store/00manifest.i
/remote/.hg/store/data/%7E2edotfile%20with%20spaces.i
/remote/.hg/store/data/%7E2ehgtags.i
/remote/.hg/store/data/bar.i
/remote/.hg/store/data/quux.i
/remotempty/.hg/bookmarks
/remotempty/.hg/bookmarks.current
/remotempty/.hg/requires
/remotempty/.hg/store/00changelog.i
/remotempty/.hg/store/00manifest.i
/sub/.hg/bookmarks
/sub/.hg/bookmarks.current
/sub/.hg/cache/hgtagsfnodes1
/sub/.hg/cache/rbc-names-v1
/sub/.hg/cache/rbc-revs-v1
/sub/.hg/requires
/sub/.hg/store/00changelog.i
/sub/.hg/store/00manifest.i
/sub/.hg/store/data/%7E2ehgtags.i
/sub/.hg/store/data/test.i