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wireprotov2: define and implement "manifestdata" command...
wireprotov2: define and implement "manifestdata" command The added command can be used for obtaining manifest data. Given a manifest path and set of manifest nodes, data about manifests can be retrieved. Unlike changeset data, we wish to emit deltas to describe manifest revisions. So the command uses the relatively new API for building delta requests and emitting them. The code calls into deltaparent(), which I'm not very keen of. There's still work to be done in delta generation land so implementation details of storage (e.g. exactly one delta is stored/available) don't creep into higher levels. But we can worry about this later (there is already a TODO on imanifestorage tracking this). On the subject of parent deltas, the server assumes parent revisions exist on the receiving end. This is obviously wrong for shallow clone. I've added TODOs to add a mechanism to the command to allow clients to specify desired behavior. This shouldn't be too difficult to implement. Another big change is that the client must explicitly request manifest nodes to retrieve. This is a major departure from "getbundle," where the server derives relevant manifests as it iterates changesets and sends them automatically. As implemented, the client must transmit each requested node to the server. At 20 bytes per node, we're looking at 2 MB per 100,000 nodes. Plus wire encoding overhead. This isn't ideal for clients with limited upload bandwidth. I plan to address this in the future by allowing alternate mechanisms for defining the revisions to retrieve. One idea is to define a range of changeset revisions whose manifest revisions to retrieve (similar to how "changesetdata" works). We almost certainly want an API to look up an individual manifest by node. And that's where I've chosen to start with the implementation. Again, a theme of this early exchangev2 work is I want to start by building primitives for accessing raw repository data first and see how far we can get with those before we need more complexity. Differential Revision: https://phab.mercurial-scm.org/D4488

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test-debugcommands.t
619 lines | 17.0 KiB | text/troff | Tads3Lexer
/ tests / test-debugcommands.t
$ cat << EOF >> $HGRCPATH
> [ui]
> interactive=yes
> EOF
$ hg init debugrevlog
$ cd debugrevlog
$ echo a > a
$ hg ci -Am adda
adding a
$ hg rm .
removing a
$ hg ci -Am make-it-empty
$ hg revert --all -r 0
adding a
$ hg ci -Am make-it-full
#if reporevlogstore
$ hg debugrevlog -c
format : 1
flags : inline
revisions : 3
merges : 0 ( 0.00%)
normal : 3 (100.00%)
revisions : 3
empty : 0 ( 0.00%)
text : 0 (100.00%)
delta : 0 (100.00%)
snapshot : 3 (100.00%)
lvl-0 : 3 (100.00%)
deltas : 0 ( 0.00%)
revision size : 191
snapshot : 191 (100.00%)
lvl-0 : 191 (100.00%)
deltas : 0 ( 0.00%)
chunks : 3
0x75 (u) : 3 (100.00%)
chunks size : 191
0x75 (u) : 191 (100.00%)
avg chain length : 0
max chain length : 0
max chain reach : 67
compression ratio : 0
uncompressed data size (min/max/avg) : 57 / 66 / 62
full revision size (min/max/avg) : 58 / 67 / 63
inter-snapshot size (min/max/avg) : 0 / 0 / 0
delta size (min/max/avg) : 0 / 0 / 0
$ hg debugrevlog -m
format : 1
flags : inline, generaldelta
revisions : 3
merges : 0 ( 0.00%)
normal : 3 (100.00%)
revisions : 3
empty : 1 (33.33%)
text : 1 (100.00%)
delta : 0 ( 0.00%)
snapshot : 2 (66.67%)
lvl-0 : 2 (66.67%)
deltas : 0 ( 0.00%)
revision size : 88
snapshot : 88 (100.00%)
lvl-0 : 88 (100.00%)
deltas : 0 ( 0.00%)
chunks : 3
empty : 1 (33.33%)
0x75 (u) : 2 (66.67%)
chunks size : 88
empty : 0 ( 0.00%)
0x75 (u) : 88 (100.00%)
avg chain length : 0
max chain length : 0
max chain reach : 44
compression ratio : 0
uncompressed data size (min/max/avg) : 0 / 43 / 28
full revision size (min/max/avg) : 44 / 44 / 44
inter-snapshot size (min/max/avg) : 0 / 0 / 0
delta size (min/max/avg) : 0 / 0 / 0
$ hg debugrevlog a
format : 1
flags : inline, generaldelta
revisions : 1
merges : 0 ( 0.00%)
normal : 1 (100.00%)
revisions : 1
empty : 0 ( 0.00%)
text : 0 (100.00%)
delta : 0 (100.00%)
snapshot : 1 (100.00%)
lvl-0 : 1 (100.00%)
deltas : 0 ( 0.00%)
revision size : 3
snapshot : 3 (100.00%)
lvl-0 : 3 (100.00%)
deltas : 0 ( 0.00%)
chunks : 1
0x75 (u) : 1 (100.00%)
chunks size : 3
0x75 (u) : 3 (100.00%)
avg chain length : 0
max chain length : 0
max chain reach : 3
compression ratio : 0
uncompressed data size (min/max/avg) : 2 / 2 / 2
full revision size (min/max/avg) : 3 / 3 / 3
inter-snapshot size (min/max/avg) : 0 / 0 / 0
delta size (min/max/avg) : 0 / 0 / 0
#endif
Test debugindex, with and without the --verbose/--debug flag
$ hg debugrevlogindex a
rev linkrev nodeid p1 p2
0 0 b789fdd96dc2 000000000000 000000000000
#if no-reposimplestore
$ hg --verbose debugrevlogindex a
rev offset length linkrev nodeid p1 p2
0 0 3 0 b789fdd96dc2 000000000000 000000000000
$ hg --debug debugrevlogindex a
rev offset length linkrev nodeid p1 p2
0 0 3 0 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000
#endif
$ hg debugrevlogindex -f 1 a
rev flag size link p1 p2 nodeid
0 0000 2 0 -1 -1 b789fdd96dc2
#if no-reposimplestore
$ hg --verbose debugrevlogindex -f 1 a
rev flag offset length size link p1 p2 nodeid
0 0000 0 3 2 0 -1 -1 b789fdd96dc2
$ hg --debug debugrevlogindex -f 1 a
rev flag offset length size link p1 p2 nodeid
0 0000 0 3 2 0 -1 -1 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
#endif
$ hg debugindex -c
rev linkrev nodeid p1 p2
0 0 07f494440405 000000000000 000000000000
1 1 8cccb4b5fec2 07f494440405 000000000000
2 2 b1e228c512c5 8cccb4b5fec2 000000000000
$ hg debugindex -c --debug
rev linkrev nodeid p1 p2
0 0 07f4944404050f47db2e5c5071e0e84e7a27bba9 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000
1 1 8cccb4b5fec20cafeb99dd01c26d4dee8ea4388a 07f4944404050f47db2e5c5071e0e84e7a27bba9 0000000000000000000000000000000000000000
2 2 b1e228c512c5d7066d70562ed839c3323a62d6d2 8cccb4b5fec20cafeb99dd01c26d4dee8ea4388a 0000000000000000000000000000000000000000
$ hg debugindex -m
rev linkrev nodeid p1 p2
0 0 a0c8bcbbb45c 000000000000 000000000000
1 1 57faf8a737ae a0c8bcbbb45c 000000000000
2 2 a35b10320954 57faf8a737ae 000000000000
$ hg debugindex -m --debug
rev linkrev nodeid p1 p2
0 0 a0c8bcbbb45c63b90b70ad007bf38961f64f2af0 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000
1 1 57faf8a737ae7faf490582941a82319ba6529dca a0c8bcbbb45c63b90b70ad007bf38961f64f2af0 0000000000000000000000000000000000000000
2 2 a35b103209548032201c16c7688cb2657f037a38 57faf8a737ae7faf490582941a82319ba6529dca 0000000000000000000000000000000000000000
$ hg debugindex a
rev linkrev nodeid p1 p2
0 0 b789fdd96dc2 000000000000 000000000000
$ hg debugindex --debug a
rev linkrev nodeid p1 p2
0 0 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000
debugdelta chain basic output
#if reporevlogstore
$ hg debugdeltachain -m
rev chain# chainlen prev delta size rawsize chainsize ratio lindist extradist extraratio
0 1 1 -1 base 44 43 44 1.02326 44 0 0.00000
1 2 1 -1 base 0 0 0 0.00000 0 0 0.00000
2 3 1 -1 base 44 43 44 1.02326 44 0 0.00000
$ hg debugdeltachain -m -T '{rev} {chainid} {chainlen}\n'
0 1 1
1 2 1
2 3 1
$ hg debugdeltachain -m -Tjson
[
{
"chainid": 1,
"chainlen": 1,
"chainratio": 1.02325581395,
"chainsize": 44,
"compsize": 44,
"deltatype": "base",
"extradist": 0,
"extraratio": 0.0,
"lindist": 44,
"prevrev": -1,
"rev": 0,
"uncompsize": 43
},
{
"chainid": 2,
"chainlen": 1,
"chainratio": 0,
"chainsize": 0,
"compsize": 0,
"deltatype": "base",
"extradist": 0,
"extraratio": 0,
"lindist": 0,
"prevrev": -1,
"rev": 1,
"uncompsize": 0
},
{
"chainid": 3,
"chainlen": 1,
"chainratio": 1.02325581395,
"chainsize": 44,
"compsize": 44,
"deltatype": "base",
"extradist": 0,
"extraratio": 0.0,
"lindist": 44,
"prevrev": -1,
"rev": 2,
"uncompsize": 43
}
]
debugdelta chain with sparse read enabled
$ cat >> $HGRCPATH <<EOF
> [experimental]
> sparse-read = True
> EOF
$ hg debugdeltachain -m
rev chain# chainlen prev delta size rawsize chainsize ratio lindist extradist extraratio readsize largestblk rddensity srchunks
0 1 1 -1 base 44 43 44 1.02326 44 0 0.00000 44 44 1.00000 1
1 2 1 -1 base 0 0 0 0.00000 0 0 0.00000 0 0 1.00000 1
2 3 1 -1 base 44 43 44 1.02326 44 0 0.00000 44 44 1.00000 1
$ hg debugdeltachain -m -T '{rev} {chainid} {chainlen} {readsize} {largestblock} {readdensity}\n'
0 1 1 44 44 1.0
1 2 1 0 0 1
2 3 1 44 44 1.0
$ hg debugdeltachain -m -Tjson
[
{
"chainid": 1,
"chainlen": 1,
"chainratio": 1.02325581395,
"chainsize": 44,
"compsize": 44,
"deltatype": "base",
"extradist": 0,
"extraratio": 0.0,
"largestblock": 44,
"lindist": 44,
"prevrev": -1,
"readdensity": 1.0,
"readsize": 44,
"rev": 0,
"srchunks": 1,
"uncompsize": 43
},
{
"chainid": 2,
"chainlen": 1,
"chainratio": 0,
"chainsize": 0,
"compsize": 0,
"deltatype": "base",
"extradist": 0,
"extraratio": 0,
"largestblock": 0,
"lindist": 0,
"prevrev": -1,
"readdensity": 1,
"readsize": 0,
"rev": 1,
"srchunks": 1,
"uncompsize": 0
},
{
"chainid": 3,
"chainlen": 1,
"chainratio": 1.02325581395,
"chainsize": 44,
"compsize": 44,
"deltatype": "base",
"extradist": 0,
"extraratio": 0.0,
"largestblock": 44,
"lindist": 44,
"prevrev": -1,
"readdensity": 1.0,
"readsize": 44,
"rev": 2,
"srchunks": 1,
"uncompsize": 43
}
]
$ printf "This test checks things.\n" >> a
$ hg ci -m a
$ hg branch other
marked working directory as branch other
(branches are permanent and global, did you want a bookmark?)
$ for i in `$TESTDIR/seq.py 5`; do
> printf "shorter ${i}" >> a
> hg ci -m "a other:$i"
> hg up -q default
> printf "for the branch default we want longer chains: ${i}" >> a
> hg ci -m "a default:$i"
> hg up -q other
> done
$ hg debugdeltachain a -T '{rev} {srchunks}\n' \
> --config experimental.sparse-read.density-threshold=0.50 \
> --config experimental.sparse-read.min-gap-size=0
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 2
11 1
$ hg --config extensions.strip= strip --no-backup -r 1
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
Test max chain len
$ cat >> $HGRCPATH << EOF
> [format]
> maxchainlen=4
> EOF
$ printf "This test checks if maxchainlen config value is respected also it can serve as basic test for debugrevlog -d <file>.\n" >> a
$ hg ci -m a
$ printf "b\n" >> a
$ hg ci -m a
$ printf "c\n" >> a
$ hg ci -m a
$ printf "d\n" >> a
$ hg ci -m a
$ printf "e\n" >> a
$ hg ci -m a
$ printf "f\n" >> a
$ hg ci -m a
$ printf 'g\n' >> a
$ hg ci -m a
$ printf 'h\n' >> a
$ hg ci -m a
$ hg debugrevlog -d a
# rev p1rev p2rev start end deltastart base p1 p2 rawsize totalsize compression heads chainlen
0 -1 -1 0 ??? 0 0 0 0 ??? ???? ? 1 0 (glob)
1 0 -1 ??? ??? 0 0 0 0 ??? ???? ? 1 1 (glob)
2 1 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 2 (glob)
3 2 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 3 (glob)
4 3 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 4 (glob)
5 4 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 0 (glob)
6 5 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 1 (glob)
7 6 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 2 (glob)
8 7 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 3 (glob)
#endif
Test debuglocks command:
$ hg debuglocks
lock: free
wlock: free
* Test setting the lock
waitlock <file> will wait for file to be created. If it isn't in a reasonable
amount of time, displays error message and returns 1
$ waitlock() {
> start=`date +%s`
> timeout=5
> while [ \( ! -f $1 \) -a \( ! -L $1 \) ]; do
> now=`date +%s`
> if [ "`expr $now - $start`" -gt $timeout ]; then
> echo "timeout: $1 was not created in $timeout seconds"
> return 1
> fi
> sleep 0.1
> done
> }
$ dolock() {
> {
> waitlock .hg/unlock
> rm -f .hg/unlock
> echo y
> } | hg debuglocks "$@" > /dev/null
> }
$ dolock -s &
$ waitlock .hg/store/lock
$ hg debuglocks
lock: user *, process * (*s) (glob)
wlock: free
[1]
$ touch .hg/unlock
$ wait
$ [ -f .hg/store/lock ] || echo "There is no lock"
There is no lock
* Test setting the wlock
$ dolock -S &
$ waitlock .hg/wlock
$ hg debuglocks
lock: free
wlock: user *, process * (*s) (glob)
[1]
$ touch .hg/unlock
$ wait
$ [ -f .hg/wlock ] || echo "There is no wlock"
There is no wlock
* Test setting both locks
$ dolock -Ss &
$ waitlock .hg/wlock && waitlock .hg/store/lock
$ hg debuglocks
lock: user *, process * (*s) (glob)
wlock: user *, process * (*s) (glob)
[2]
* Test failing to set a lock
$ hg debuglocks -s
abort: lock is already held
[255]
$ hg debuglocks -S
abort: wlock is already held
[255]
$ touch .hg/unlock
$ wait
$ hg debuglocks
lock: free
wlock: free
* Test forcing the lock
$ dolock -s &
$ waitlock .hg/store/lock
$ hg debuglocks
lock: user *, process * (*s) (glob)
wlock: free
[1]
$ hg debuglocks -L
$ hg debuglocks
lock: free
wlock: free
$ touch .hg/unlock
$ wait
* Test forcing the wlock
$ dolock -S &
$ waitlock .hg/wlock
$ hg debuglocks
lock: free
wlock: user *, process * (*s) (glob)
[1]
$ hg debuglocks -W
$ hg debuglocks
lock: free
wlock: free
$ touch .hg/unlock
$ wait
Test WdirUnsupported exception
$ hg debugdata -c ffffffffffffffffffffffffffffffffffffffff
abort: working directory revision cannot be specified
[255]
Test cache warming command
$ rm -rf .hg/cache/
$ hg debugupdatecaches --debug
updating the branch cache
$ ls -r .hg/cache/*
.hg/cache/rbc-revs-v1
.hg/cache/rbc-names-v1
.hg/cache/manifestfulltextcache (reporevlogstore !)
.hg/cache/branch2-served
Test debugcolor
#if no-windows
$ hg debugcolor --style --color always | egrep 'mode|style|log\.'
color mode: 'ansi'
available style:
\x1b[0;33mlog.changeset\x1b[0m: \x1b[0;33myellow\x1b[0m (esc)
#endif
$ hg debugcolor --style --color never
color mode: None
available style:
$ cd ..
Test internal debugstacktrace command
$ cat > debugstacktrace.py << EOF
> from __future__ import absolute_import
> import sys
> from mercurial import util
> def f():
> util.debugstacktrace(f=sys.stdout)
> g()
> def g():
> util.dst('hello from g\\n', skip=1)
> h()
> def h():
> util.dst('hi ...\\nfrom h hidden in g', 1, depth=2)
> f()
> EOF
$ $PYTHON debugstacktrace.py
stacktrace at:
debugstacktrace.py:12 in * (glob)
debugstacktrace.py:5 in f
hello from g at:
debugstacktrace.py:12 in * (glob)
debugstacktrace.py:6 in f
hi ...
from h hidden in g at:
debugstacktrace.py:6 in f
debugstacktrace.py:9 in g
Test debugcapabilities command:
$ hg debugcapabilities ./debugrevlog/
Main capabilities:
branchmap
$USUAL_BUNDLE2_CAPS$
getbundle
known
lookup
pushkey
unbundle
Bundle2 capabilities:
HG20
bookmarks
changegroup
01
02
digests
md5
sha1
sha512
error
abort
unsupportedcontent
pushraced
pushkey
hgtagsfnodes
listkeys
phases
heads
pushkey
remote-changegroup
http
https
rev-branch-cache
stream
v2
Test debugpeer
$ hg --config ui.ssh="\"$PYTHON\" \"$TESTDIR/dummyssh\"" debugpeer ssh://user@dummy/debugrevlog
url: ssh://user@dummy/debugrevlog
local: no
pushable: yes
$ hg --config ui.ssh="\"$PYTHON\" \"$TESTDIR/dummyssh\"" --debug debugpeer ssh://user@dummy/debugrevlog
running "*" "*/tests/dummyssh" 'user@dummy' 'hg -R debugrevlog serve --stdio' (glob) (no-windows !)
running "*" "*\tests/dummyssh" "user@dummy" "hg -R debugrevlog serve --stdio" (glob) (windows !)
devel-peer-request: hello+between
devel-peer-request: pairs: 81 bytes
sending hello command
sending between command
remote: 413
remote: capabilities: batch branchmap $USUAL_BUNDLE2_CAPS_SERVER$ changegroupsubset getbundle known lookup protocaps pushkey streamreqs=generaldelta,revlogv1 unbundle=HG10GZ,HG10BZ,HG10UN unbundlehash
remote: 1
devel-peer-request: protocaps
devel-peer-request: caps: * bytes (glob)
sending protocaps command
url: ssh://user@dummy/debugrevlog
local: no
pushable: yes