obsolete: compute extinct changesets
`extinct` changesets are obsolete changesets with obsolete descendants only. They
are of no interest anymore and can be:
- exclude from exchange
- hidden to the user in most situation
- safely garbage collected
This changeset just allows mercurial to detect them.
The implementation is a bit naive, as for unstable changesets. We better use a
simple revset query and a cache, but simple version comes first.
$ cat >> $HGRCPATH << EOF
> [extensions]
> graphlog=
> [phases]
> # public changeset are not obsolete
> publish=false
> EOF
$ mkcommit() {
> echo "$1" > "$1"
> hg add "$1"
> hg ci -m "add $1"
> }
$ getid() {
> hg id --debug -ir "desc('$1')"
> }
$ hg init tmpa
$ cd tmpa
Killing a single changeset without replacement
$ mkcommit kill_me
$ hg debugobsolete -d '0 0' `getid kill_me` -u babar
$ hg debugobsolete
97b7c2d76b1845ed3eb988cd612611e72406cef0 0 {'date': '0 0', 'user': 'babar'}
$ cd ..
Killing a single changeset with replacement
$ hg init tmpb
$ cd tmpb
$ mkcommit a
$ mkcommit b
$ mkcommit original_c
$ hg up "desc('b')"
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkcommit new_c
created new head
$ hg debugobsolete `getid original_c` `getid new_c` -d '56 12'
$ hg debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
do it again (it read the obsstore before adding new changeset)
$ hg up '.^'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkcommit new_2_c
created new head
$ hg debugobsolete -d '1337 0' `getid new_c` `getid new_2_c`
$ hg debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
Register two markers with a missing node
$ hg up '.^'
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ mkcommit new_3_c
created new head
$ hg debugobsolete -d '1338 0' `getid new_2_c` 1337133713371337133713371337133713371337
$ hg debugobsolete -d '1339 0' 1337133713371337133713371337133713371337 `getid new_3_c`
$ hg debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
ca819180edb99ed25ceafb3e9584ac287e240b00 1337133713371337133713371337133713371337 0 {'date': '1338 0', 'user': 'test'}
1337133713371337133713371337133713371337 5601fb93a350734d935195fee37f4054c529ff39 0 {'date': '1339 0', 'user': 'test'}
Check that graphlog detect that a changeset is obsolete:
$ hg glog
@ changeset: 5:5601fb93a350
| tag: tip
| parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_3_c
|
| x changeset: 4:ca819180edb9
|/ parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_2_c
|
| x changeset: 3:cdbce2fbb163
|/ parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_c
|
| x changeset: 2:245bde4270cd
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add original_c
|
o changeset: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add b
|
o changeset: 0:1f0dee641bb7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add a
Check that public changeset are not accounted as obsolete:
$ hg phase --public 2
$ hg --config 'extensions.graphlog=' glog
@ changeset: 5:5601fb93a350
| tag: tip
| parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_3_c
|
| x changeset: 4:ca819180edb9
|/ parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_2_c
|
| x changeset: 3:cdbce2fbb163
|/ parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_c
|
| o changeset: 2:245bde4270cd
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add original_c
|
o changeset: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add b
|
o changeset: 0:1f0dee641bb7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add a
$ cd ..
Exchange Test
============================
Destination repo does not have any data
---------------------------------------
Try to pull markers
$ hg init tmpc
$ cd tmpc
$ hg pull ../tmpb
pulling from ../tmpb
requesting all changes
adding changesets
adding manifests
adding file changes
added 6 changesets with 6 changes to 6 files (+3 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
ca819180edb99ed25ceafb3e9584ac287e240b00 1337133713371337133713371337133713371337 0 {'date': '1338 0', 'user': 'test'}
1337133713371337133713371337133713371337 5601fb93a350734d935195fee37f4054c529ff39 0 {'date': '1339 0', 'user': 'test'}
Rollback//Transaction support
$ hg debugobsolete -d '1340 0' aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
$ hg debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
ca819180edb99ed25ceafb3e9584ac287e240b00 1337133713371337133713371337133713371337 0 {'date': '1338 0', 'user': 'test'}
1337133713371337133713371337133713371337 5601fb93a350734d935195fee37f4054c529ff39 0 {'date': '1339 0', 'user': 'test'}
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb 0 {'date': '1340 0', 'user': 'test'}
$ hg rollback -n
repository tip rolled back to revision 5 (undo debugobsolete)
$ hg rollback
repository tip rolled back to revision 5 (undo debugobsolete)
$ hg debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
ca819180edb99ed25ceafb3e9584ac287e240b00 1337133713371337133713371337133713371337 0 {'date': '1338 0', 'user': 'test'}
1337133713371337133713371337133713371337 5601fb93a350734d935195fee37f4054c529ff39 0 {'date': '1339 0', 'user': 'test'}
$ cd ..
Try to pull markers
$ hg init tmpd
$ hg -R tmpb push tmpd
pushing to tmpd
searching for changes
abort: push includes an obsolete changeset: ca819180edb9!
[255]
$ hg -R tmpd debugobsolete
$ hg -R tmpb push tmpd --rev 'not obsolete()'
pushing to tmpd
searching for changes
adding changesets
adding manifests
adding file changes
added 4 changesets with 4 changes to 4 files (+1 heads)
$ hg -R tmpd debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
ca819180edb99ed25ceafb3e9584ac287e240b00 1337133713371337133713371337133713371337 0 {'date': '1338 0', 'user': 'test'}
1337133713371337133713371337133713371337 5601fb93a350734d935195fee37f4054c529ff39 0 {'date': '1339 0', 'user': 'test'}
Destination repo have existing data
---------------------------------------
On pull
$ hg init tmpe
$ cd tmpe
$ hg debugobsolete -d '1339 0' 2448244824482448244824482448244824482448 1339133913391339133913391339133913391339
$ hg pull ../tmpb
pulling from ../tmpb
requesting all changes
adding changesets
adding manifests
adding file changes
added 6 changesets with 6 changes to 6 files (+3 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
$ hg debugobsolete
2448244824482448244824482448244824482448 1339133913391339133913391339133913391339 0 {'date': '1339 0', 'user': 'test'}
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
ca819180edb99ed25ceafb3e9584ac287e240b00 1337133713371337133713371337133713371337 0 {'date': '1338 0', 'user': 'test'}
1337133713371337133713371337133713371337 5601fb93a350734d935195fee37f4054c529ff39 0 {'date': '1339 0', 'user': 'test'}
On push
$ hg push ../tmpc
pushing to ../tmpc
searching for changes
no changes found
[1]
$ hg -R ../tmpc debugobsolete
245bde4270cd1072a27757984f9cda8ba26f08ca cdbce2fbb16313928851e97e0d85413f3f7eb77f 0 {'date': '56 12', 'user': 'test'}
cdbce2fbb16313928851e97e0d85413f3f7eb77f ca819180edb99ed25ceafb3e9584ac287e240b00 0 {'date': '1337 0', 'user': 'test'}
ca819180edb99ed25ceafb3e9584ac287e240b00 1337133713371337133713371337133713371337 0 {'date': '1338 0', 'user': 'test'}
1337133713371337133713371337133713371337 5601fb93a350734d935195fee37f4054c529ff39 0 {'date': '1339 0', 'user': 'test'}
2448244824482448244824482448244824482448 1339133913391339133913391339133913391339 0 {'date': '1339 0', 'user': 'test'}
detect outgoing obsolete and unstable
---------------------------------------
$ hg glog
o changeset: 5:5601fb93a350
| tag: tip
| parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_3_c
|
| x changeset: 4:ca819180edb9
|/ parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_2_c
|
| x changeset: 3:cdbce2fbb163
|/ parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_c
|
| o changeset: 2:245bde4270cd
|/ user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add original_c
|
o changeset: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add b
|
o changeset: 0:1f0dee641bb7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add a
$ hg up -q 'desc("new_2_c")'
$ mkcommit original_d
$ hg glog -r '::unstable()'
@ changeset: 6:7878242aeece
| tag: tip
| parent: 4:ca819180edb9
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add original_d
|
x changeset: 4:ca819180edb9
| parent: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add new_2_c
|
o changeset: 1:7c3bad9141dc
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: add b
|
o changeset: 0:1f0dee641bb7
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add a
$ hg push ../tmpc/
pushing to ../tmpc/
searching for changes
abort: push includes an unstable changeset: 7878242aeece!
[255]
Test that extinct changeset are properly detected
$ hg log -r 'extinct()'
changeset: 3:cdbce2fbb163
parent: 1:7c3bad9141dc
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: add new_c