tests/test-narrow-patch.t
author Gregory Szorc <gregory.szorc@gmail.com>
Sat, 14 Apr 2018 11:50:19 -0700
changeset 37719 a656cba08a04
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permissions -rw-r--r--
wireprotov2: move response handling out of httppeer And fix some bugs while we're here. The code for processing response data from the unified framing protocol is mostly peer agnostic. The peer-specific bits are the configuration of the client reactor and how I/O is performed. I initially implemented things in httppeer for expediency. This commit establishes a module for holding the peer API level code for the framing based protocol. Inside this module we have a class to help coordinate higher-level activities, such as managing response object. The client handler bits could be rolled into clientreactor. However, I want clientreactor to be sans I/O and I want it to only be concerned with protocol-level details, not higher-level concepts like how protocol events are converted into peer API concepts. I want clientreactor to receive a frame and then tell the caller what should probably be done about it. If we start putting things like future resolution into clientreactor, we'll constrain how the protocol can be used (e.g. by requiring futures). The new code is loosely based on what was in httppeer before. I changed things a bit around response handling. We now buffer the entire response "body" and then handle it as one atomic unit. This fixed a bug around decoding CBOR data that spanned multiple frames. I also fixed an off-by-one bug where we failed to read a single byte CBOR value at the end of the stream. That's why tests have changed. The new state of httppeer is much cleaner. It is largely agnostic about framing protocol implementation details. That's how it should be: the framing protocol is designed to be largely transport agnostic. We want peers merely putting bytes on the wire and telling the framing protocol where to read response data from. There's still a bit of work to be done here, especially for representing responses. But at least we're a step closer to having a higher-level peer interface that can be plugged into the SSH peer someday. I initially added this class to wireprotoframing. However, we'll eventually need version 2 specific functions to convert CBOR responses into data structures expected by the code calling commands. This needs to live somewhere. Since that code would be shared across peers, we need a common module. We have wireprotov1peer for the equivalent version 1 code. So I decided to establish wireprotov2peer. Differential Revision: https://phab.mercurial-scm.org/D3379
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#testcases flat tree
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  $ . "$TESTDIR/narrow-library.sh"
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#if tree
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  $ cat << EOF >> $HGRCPATH
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  > [experimental]
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  > treemanifest = 1
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  > EOF
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#endif
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create full repo
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  $ hg init master
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  $ cd master
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  $ mkdir inside
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  $ echo inside > inside/f1
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  $ mkdir outside
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  $ echo outside > outside/f1
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  $ hg ci -Aqm 'initial'
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  $ echo modified > inside/f1
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  $ hg ci -qm 'modify inside'
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  $ echo modified > outside/f1
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  $ hg ci -qm 'modify outside'
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  $ cd ..
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  $ hg clone --narrow ssh://user@dummy/master narrow --include inside
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  requesting all changes
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  adding changesets
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  adding manifests
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  adding file changes
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  added 3 changesets with 2 changes to 1 files
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  new changesets *:* (glob)
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  updating to branch default
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  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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  $ cd narrow
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Can show patch touching paths outside
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  $ hg log -p
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  changeset:   2:* (glob)
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  tag:         tip
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  user:        test
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  date:        Thu Jan 01 00:00:00 1970 +0000
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  summary:     modify outside
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  changeset:   1:* (glob)
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  user:        test
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  date:        Thu Jan 01 00:00:00 1970 +0000
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  summary:     modify inside
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  diff -r * -r * inside/f1 (glob)
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  --- a/inside/f1	Thu Jan 01 00:00:00 1970 +0000
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  +++ b/inside/f1	Thu Jan 01 00:00:00 1970 +0000
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  @@ -1,1 +1,1 @@
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  -inside
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  +modified
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  changeset:   0:* (glob)
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  user:        test
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  date:        Thu Jan 01 00:00:00 1970 +0000
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  summary:     initial
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  diff -r 000000000000 -r * inside/f1 (glob)
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  --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
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  +++ b/inside/f1	Thu Jan 01 00:00:00 1970 +0000
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  @@ -0,0 +1,1 @@
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  +inside
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  $ hg status --rev 1 --rev 2
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Can show copies inside the narrow clone
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  $ hg cp inside/f1 inside/f2
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  $ hg diff --git
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  diff --git a/inside/f1 b/inside/f2
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  copy from inside/f1
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  copy to inside/f2