Mercurial > hg
view tests/test-pathconflicts-update.t @ 37048:fc5e261915b9
wireproto: require POST for all HTTPv2 requests
Wire protocol version 1 transfers argument data via request
headers by default. This has historically caused problems because
servers institute limits on the length of individual HTTP headers
as well as the total size of all request headers. Mercurial servers
can advertise the maximum length of an individual header. But
there's no guarantee any intermediate HTTP agents will accept
headers up to that length.
In the existing wire protocol, server operators typically also
key off the HTTP request method to implement authentication.
For example, GET requests translate to read-only requests and
can be allowed. But read-write commands must use POST and require
authentication. This has typically worked because the only wire
protocol commands that use POST modify the repo (e.g. the
"unbundle" command).
There is an experimental feature to enable clients to transmit
argument data via POST request bodies. This is technically a
better and more robust solution. But we can't enable it by default
because of servers assuming POST means write access.
In version 2 of the wire protocol, the permissions of a request
are encoded in the URL. And with it being a new protocol in a new
URL space, we're not constrained by backwards compatibility
requirements.
This commit adopts the technically superior mechanism of using
HTTP request bodies to send argument data by requiring POST for
all commands. Strictly speaking, it may be possible to send
request bodies on GET requests. But my experience is that not all
HTTP stacks support this. POST pretty much always works. Using POST
for read-only operations does sacrifice some RESTful design
purity. But this API cares about practicality, not about being
in Roy T. Fielding's REST ivory tower.
There's a chance we may relax this restriction in the future. But
for now, I want to see how far we can get with a POST only API.
Differential Revision: https://phab.mercurial-scm.org/D2837
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 13 Mar 2018 11:57:43 -0700 |
parents | 2a774cae3a03 |
children | 527ce85c2e60 |
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Path conflict checking is currently disabled by default because of issue5716. Turn it on for this test. $ cat >> $HGRCPATH << EOF > [experimental] > merge.checkpathconflicts=True > EOF $ hg init repo $ cd repo $ echo base > base $ hg add base $ hg commit -m "base" $ hg bookmark -i base $ mkdir a $ echo 1 > a/b $ hg add a/b $ hg commit -m "file" $ hg bookmark -i file $ echo 2 > a/b $ hg commit -m "file2" $ hg bookmark -i file2 $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ mkdir a #if symlink $ ln -s c a/b #else $ touch a/b #endif $ hg add a/b $ hg commit -m "link" created new head $ hg bookmark -i link $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ mkdir -p a/b/c $ echo 2 > a/b/c/d $ hg add a/b/c/d $ hg commit -m "dir" created new head $ hg bookmark -i dir Update - local file conflicts with remote directory: $ hg up -q 0 $ mkdir a $ echo 9 > a/b $ hg up dir a/b: untracked file conflicts with directory abort: untracked files in working directory differ from files in requested revision [255] $ hg up dir --config merge.checkunknown=warn a/b: replacing untracked file 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (activating bookmark dir) $ cat a/b.orig 9 $ rm a/b.orig Update - local symlink conflicts with remote directory: $ hg up -q 0 $ mkdir a #if symlink $ ln -s x a/b #else $ touch a/b #endif $ hg up dir a/b: untracked file conflicts with directory abort: untracked files in working directory differ from files in requested revision [255] $ hg up dir --config merge.checkunknown=warn a/b: replacing untracked file 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (activating bookmark dir) #if symlink $ readlink.py a/b.orig a/b.orig -> x #endif $ rm a/b.orig Update - local directory conflicts with remote file $ hg up -q 0 $ mkdir -p a/b/c $ echo 9 > a/b/c/d $ hg up file a/b: untracked directory conflicts with file abort: untracked files in working directory differ from files in requested revision [255] $ hg up file --config merge.checkunknown=warn a/b: replacing untracked files in directory 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (activating bookmark file) $ cat a/b 1 $ test -d a/b.orig $ rm -rf a/b.orig Update - local directory conflicts with remote symlink $ hg up -q 0 $ mkdir -p a/b/c $ echo 9 > a/b/c/d $ hg up link a/b: untracked directory conflicts with file abort: untracked files in working directory differ from files in requested revision [255] $ hg up link --config merge.checkunknown=warn a/b: replacing untracked files in directory 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (activating bookmark link) #if symlink $ readlink.py a/b a/b -> c #endif $ test -d a/b.orig $ rm -rf a/b.orig Update - local renamed file conflicts with remote directory $ hg up -q 0 $ hg mv base a $ hg status -C A a base R base $ hg up --check dir abort: uncommitted changes [255] $ hg up dir a: path conflict - a file or link has the same name as a directory the local file has been renamed to a~d20a80d4def3 resolve manually then use 'hg resolve --mark a' 1 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges (activating bookmark dir) [1] $ hg status -C A a~d20a80d4def3 base R base $ hg resolve --list P a $ hg up --clean -q 0 Update clean - local directory conflicts with changed remote file $ hg up -q file $ rm a/b $ mkdir a/b $ echo 9 > a/b/c $ hg up file2 --check --config merge.checkunknown=warn abort: uncommitted changes [255] $ hg up file2 --clean 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (activating bookmark file2)