Mercurial > hg
view tests/test-mq-safety.t @ 24545:9e0c67e84896
json: implement {tags} template
Tags is pretty easy to implement. Let's start there.
The output is slightly different from `hg tags -Tjson`. For reference,
the CLI has the following output:
[
{
"node": "e2049974f9a23176c2addb61d8f5b86e0d620490",
"rev": 29880,
"tag": "tip",
"type": ""
},
...
]
Our output has the format:
{
"node": "0aeb19ea57a6d223bacddda3871cb78f24b06510",
"tags": [
{
"node": "e2049974f9a23176c2addb61d8f5b86e0d620490",
"tag": "tag1",
"date": [1427775457.0, 25200]
},
...
]
}
"rev" is omitted because it isn't a reliable identifier. We shouldn't
be exposing them in web APIs and giving the impression it remotely
resembles a stable identifier. Perhaps we could one day hide this behind
a config option (it might be useful to expose when running servers
locally).
The "type" of the tag isn't defined because this information isn't yet
exposed to the hgweb templater (it could be in a follow-up) and because
it is questionable whether different types should be exposed at all.
(Should the web interface really be exposing "local" tags?)
We use an object for the outer type instead of Array for a few reasons.
First, it is extensible. If we ever need to throw more global properties
into the output, we can do that without breaking backwards compatibility
(property additions should be backwards compatible). Second, uniformity
in web APIs is nice. Having everything return objects seems much saner than
a mix of array and object. Third, there are security issues with arrays
in older browsers. The JSON web services world almost never uses arrays
as the main type for this reason.
Another possibly controversial part about this patch is how dates are
defined. While JSON has a Date type, it is based on the JavaScript Date
type, which is widely considered a pile of garbage. It is a non-starter
for this reason.
Many of Mercurial's built-in date filters drop seconds resolution. So
that's a non-starter as well, since we want the API to be lossless where
possible. rfc3339date, rfc822date, isodatesec, and date are all lossless.
However, they each require the client to perform string parsing on top of
JSON decoding. While date parsing libraries are pretty ubiquitous, some
languages don't have them out of the box. However, pretty much every
programming language can deal with UNIX timestamps (which are just
integers or floats). So, we choose to use Mercurial's internal date
representation, which in JSON is modeled as float seconds since UNIX
epoch and an integer timezone offset from UTC (keep in mind
JavaScript/JSON models all "Numbers" as double prevision floating point
numbers, so there isn't a difference between ints and floats in JSON).
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 31 Mar 2015 14:52:21 -0700 |
parents | aa9385f983fa |
children | d298805fb639 |
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$ echo '[extensions]' >> $HGRCPATH $ echo 'hgext.mq =' >> $HGRCPATH $ hg init repo $ cd repo $ echo foo > foo $ hg ci -qAm 'add a file' $ hg qinit $ hg qnew foo $ echo foo >> foo $ hg qrefresh -m 'append foo' $ hg qnew bar $ echo bar >> foo $ hg qrefresh -m 'append bar' Try to operate on public mq changeset $ hg qpop popping bar now at: foo $ hg phase --public qbase $ echo babar >> foo $ hg qref abort: cannot refresh immutable revision (see "hg help phases" for details) [255] $ hg revert -a reverting foo $ hg qpop abort: popping would remove an immutable revision (see "hg help phases" for details) [255] $ hg qfold bar abort: cannot refresh immutable revision (see "hg help phases" for details) [255] $ hg revert -a reverting foo restore state for remaining test $ hg qpush applying bar now at: bar try to commit on top of a patch $ echo quux >> foo $ hg ci -m 'append quux' abort: cannot commit over an applied mq patch [255] cheat a bit... $ mv .hg/patches .hg/patches2 $ hg ci -m 'append quux' $ mv .hg/patches2 .hg/patches qpop/qrefresh on the wrong revision $ hg qpop abort: popping would remove a revision not managed by this patch queue [255] $ hg qpop -n patches using patch queue: $TESTTMP/repo/.hg/patches (glob) abort: popping would remove a revision not managed by this patch queue [255] $ hg qrefresh abort: working directory revision is not qtip [255] $ hg up -C qtip 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg qpop abort: popping would remove a revision not managed by this patch queue [255] $ hg qrefresh abort: cannot refresh a revision with children [255] $ hg tip --template '{rev} {desc}\n' 3 append quux qpush warning branchheads $ cd .. $ hg init branchy $ cd branchy $ echo q > q $ hg add q $ hg qnew -f qp $ hg qpop popping qp patch queue now empty $ echo a > a $ hg ci -Ama adding a $ hg up null 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg branch b marked working directory as branch b (branches are permanent and global, did you want a bookmark?) $ echo c > c $ hg ci -Amc adding c $ hg merge default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -mmerge $ hg up default 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg log changeset: 2:65309210bf4e branch: b tag: tip parent: 1:707adb4c8ae1 parent: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: merge changeset: 1:707adb4c8ae1 branch: b parent: -1:000000000000 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: c changeset: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a $ hg qpush applying qp now at: qp Testing applied patches, push and --force $ cd .. $ hg init forcepush $ cd forcepush $ echo a > a $ hg ci -Am adda adding a $ echo a >> a $ hg ci -m changea $ hg up 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg branch branch marked working directory as branch branch (branches are permanent and global, did you want a bookmark?) $ echo b > b $ hg ci -Am addb adding b $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg --cwd .. clone -r 0 forcepush forcepush2 adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo a >> a $ hg qnew patch Pushing applied patch with --rev without --force $ hg push -r . ../forcepush2 pushing to ../forcepush2 abort: source has mq patches applied [255] Pushing applied patch with branchhash, without --force $ hg push ../forcepush2#default pushing to ../forcepush2 abort: source has mq patches applied [255] Pushing revs excluding applied patch $ hg push --new-branch -r 'branch(branch)' -r 2 ../forcepush2 pushing to ../forcepush2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files Pushing applied patch with --force $ hg phase --force --secret 'mq()' $ hg push --force -r default ../forcepush2 pushing to ../forcepush2 searching for changes no changes found (ignored 1 secret changesets) [1] $ hg phase --draft 'mq()' $ hg push --force -r default ../forcepush2 pushing to ../forcepush2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) $ cd ..