Mercurial > hg
view tests/test-rename-dir-merge.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 | 41ef02ba329b |
children | eb9835014d20 |
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$ hg init t $ cd t $ mkdir a $ echo foo > a/a $ echo bar > a/b $ hg ci -Am "0" adding a/a adding a/b $ hg co -C 0 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg mv a b moving a/a to b/a moving a/b to b/b $ hg ci -m "1 mv a/ b/" $ hg co -C 0 2 files updated, 0 files merged, 2 files removed, 0 files unresolved $ echo baz > a/c $ echo quux > a/d $ hg add a/c $ hg ci -m "2 add a/c" created new head $ hg merge --debug 1 searching for copies back to rev 1 unmatched files in local: a/c unmatched files in other: b/a b/b all copies found (* = to merge, ! = divergent, % = renamed and deleted): src: 'a/a' -> dst: 'b/a' src: 'a/b' -> dst: 'b/b' checking for directory renames discovered dir src: 'a/' -> dst: 'b/' pending file src: 'a/c' -> dst: 'b/c' resolving manifests branchmerge: True, force: False, partial: False ancestor: f9b20c0d4c51, local: ce36d17b18fb+, remote: 397f8b00a740 a/a: other deleted -> r removing a/a a/b: other deleted -> r removing a/b b/a: remote created -> g getting b/a b/b: remote created -> g getting b/b b/c: remote directory rename - move from a/c -> dm moving a/c to b/c 3 files updated, 0 files merged, 2 files removed, 0 files unresolved (branch merge, don't forget to commit) $ echo a/* b/* a/d b/a b/b b/c $ hg st -C M b/a M b/b A b/c a/c R a/a R a/b R a/c ? a/d $ hg ci -m "3 merge 2+1" $ hg debugrename b/c b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88 $ hg co -C 1 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge --debug 2 searching for copies back to rev 1 unmatched files in local: b/a b/b unmatched files in other: a/c all copies found (* = to merge, ! = divergent, % = renamed and deleted): src: 'a/a' -> dst: 'b/a' src: 'a/b' -> dst: 'b/b' checking for directory renames discovered dir src: 'a/' -> dst: 'b/' pending file src: 'a/c' -> dst: 'b/c' resolving manifests branchmerge: True, force: False, partial: False ancestor: f9b20c0d4c51, local: 397f8b00a740+, remote: ce36d17b18fb starting 4 threads for background file closing (?) b/c: local directory rename - get from a/c -> dg getting a/c to b/c 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ echo a/* b/* a/d b/a b/b b/c $ hg st -C A b/c a/c ? a/d $ hg ci -m "4 merge 1+2" created new head $ hg debugrename b/c b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88 Local directory rename with conflicting file added in remote source directory and untracked in local target directory. $ hg co -qC 1 $ echo target > b/c $ hg merge 2 b/c: untracked file differs abort: untracked files in working directory differ from files in requested revision [255] $ cat b/c target but it should succeed if the content matches $ hg cat -r 2 a/c > b/c $ hg merge 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st -C A b/c a/c ? a/d Local directory rename with conflicting file added in remote source directory and committed in local target directory. $ hg co -qC 1 $ echo target > b/c $ hg add b/c $ hg commit -qm 'new file in target directory' $ hg merge 2 merging b/c and a/c to b/c warning: conflicts while merging b/c! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ hg st -A M b/c a/c ? a/d ? b/c.orig C b/a C b/b $ cat b/c <<<<<<< working copy: f1c50ca4f127 - test: new file in target directory target ======= baz >>>>>>> merge rev: ce36d17b18fb - test: 2 add a/c $ rm b/c.orig Remote directory rename with conflicting file added in remote target directory and committed in local source directory. $ hg co -qC 2 $ hg st -A ? a/d C a/a C a/b C a/c $ hg merge 5 merging a/c and b/c to b/c warning: conflicts while merging b/c! (edit, then use 'hg resolve --mark') 2 files updated, 0 files merged, 2 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ hg st -A M b/a M b/b M b/c a/c R a/a R a/b R a/c ? a/d ? b/c.orig $ cat b/c <<<<<<< working copy: ce36d17b18fb - test: 2 add a/c baz ======= target >>>>>>> merge rev: f1c50ca4f127 - test: new file in target directory Second scenario with two repos: $ cd .. $ hg init r1 $ cd r1 $ mkdir a $ echo foo > a/f $ hg add a adding a/f $ hg ci -m "a/f == foo" $ cd .. $ hg clone r1 r2 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd r2 $ hg mv a b moving a/f to b/f $ echo foo1 > b/f $ hg ci -m" a -> b, b/f == foo1" $ cd .. $ cd r1 $ mkdir a/aa $ echo bar > a/aa/g $ hg add a/aa adding a/aa/g $ hg ci -m "a/aa/g" $ hg pull ../r2 pulling from ../r2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) new changesets 7d51ed18da25 (run 'hg heads' to see heads, 'hg merge' to merge) $ hg merge 2 files updated, 0 files merged, 1 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st -C M b/f A b/aa/g a/aa/g R a/aa/g R a/f $ cd .. Test renames to separate directories $ hg init a $ cd a $ mkdir a $ touch a/s $ touch a/t $ hg ci -Am0 adding a/s adding a/t Add more files $ touch a/s2 $ touch a/t2 $ hg ci -Am1 adding a/s2 adding a/t2 Do moves on a branch $ hg up 0 0 files updated, 0 files merged, 2 files removed, 0 files unresolved $ mkdir s $ mkdir t $ hg mv a/s s $ hg mv a/t t $ hg ci -Am2 created new head $ hg st --copies --change . A s/s a/s A t/t a/t R a/s R a/t Merge shouldn't move s2, t2 $ hg merge 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st --copies M a/s2 M a/t2 Try the merge in the other direction. It may or may not be appropriate for status to list copies here. $ hg up -C 1 4 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg merge 2 files updated, 0 files merged, 2 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st --copies M s/s M t/t R a/s R a/t