##// END OF EJS Templates
wireprotov2: implement commands as a generator of objects...
wireprotov2: implement commands as a generator of objects Previously, wire protocol version 2 inherited version 1's model of having separate types to represent the results of different wire protocol commands. As I implemented more powerful commands in future commits, I found I was using a common pattern of returning a special type to hold a generator. This meant the command function required a closure to do most of the work. That made logic flow more difficult to follow. I also noticed that many commands were effectively a sequence of objects to be CBOR encoded. I think it makes sense to define version 2 commands as generators. This way, commands can simply emit the data structures they wish to send to the client. This eliminates the need for a closure in command functions and removes encoding from the bodies of commands. As part of this commit, the handling of response objects has been moved into the serverreactor class. This puts the reactor in the driver's seat with regards to CBOR encoding and error handling. Having error handling in the function that emits frames is particularly important because exceptions in that function can lead to things getting in a bad state: I'm fairly certain that uncaught exceptions in the frame generator were causing deadlocks. I also introduced a dedicated error type for explicit error reporting in command handlers. This will be used in subsequent commits. There's still a bit of work to be done here, especially around formalizing the error handling "protocol." I've added yet another TODO to track this so we don't forget. Test output changed because we're using generators and no longer know we are at the end of the data until we hit the end of the generator. This means we can't emit the end-of-stream flag until we've exhausted the generator. Hence the introduction of 0-sized end-of-stream frames. Differential Revision: https://phab.mercurial-scm.org/D4472

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test-mq-qrefresh.t
552 lines | 8.6 KiB | text/troff | Tads3Lexer
$ cat <<EOF >> $HGRCPATH
> [extensions]
> mq =
> [diff]
> nodates = 1
> EOF
$ hg init a
$ cd a
$ mkdir 1 2
$ echo 'base' > 1/base
$ echo 'base' > 2/base
$ hg ci -Ambase
adding 1/base
adding 2/base
$ hg qnew -mmqbase mqbase
$ echo 'patched' > 1/base
$ echo 'patched' > 2/base
$ hg qrefresh
$ hg qdiff
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ hg qdiff .
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ echo 'patched again' > base
$ hg qrefresh 1
$ hg qdiff
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ hg qdiff .
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
qrefresh . in subdir:
$ ( cd 1 ; hg qrefresh . )
$ hg qdiff
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ hg qdiff .
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
qrefresh in hg-root again:
$ hg qrefresh
$ hg qdiff
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ hg qdiff .
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
qrefresh --short tests:
$ echo 'orphan' > orphanchild
$ hg add orphanchild
$ hg qrefresh nonexistentfilename # clear patch
nonexistentfilename: * (glob)
$ hg diff -c qtip
$ hg qrefresh --short 1/base
$ hg qrefresh --short 2/base
$ hg qdiff
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 orphanchild
--- /dev/null
+++ b/orphanchild
@@ -0,0 +1,1 @@
+orphan
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
$ hg st
A orphanchild
? base
diff shows what is not in patch:
$ hg diff
diff -r ???????????? orphanchild (glob)
--- /dev/null
+++ b/orphanchild
@@ -0,0 +1,1 @@
+orphan
Before starting exclusive tests:
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
Exclude 2/base:
$ hg qref -s -X 2/base
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
status shows 2/base as dirty:
$ hg status
M 2/base
A orphanchild
? base
Remove 1/base and add 2/base again but not orphanchild:
$ hg qref -s -X orphanchild -X 1/base 2/base orphanchild
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 2/base
--- a/2/base
+++ b/2/base
@@ -1,1 +1,1 @@
-base
+patched
Add 1/base with include filter - and thus remove 2/base from patch:
$ hg qref -s -I 1/ o* */*
$ cat .hg/patches/mqbase
# HG changeset patch
# Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa
mqbase
diff -r e7af5904b465 1/base
--- a/1/base
+++ b/1/base
@@ -1,1 +1,1 @@
-base
+patched
$ cd ..
Test qrefresh --git losing copy metadata:
$ hg init repo
$ cd repo
$ echo "[diff]" >> .hg/hgrc
$ echo "git=True" >> .hg/hgrc
$ echo a > a
$ hg ci -Am adda
adding a
$ hg copy a ab
$ echo b >> ab
$ hg copy a ac
$ echo c >> ac
Capture changes:
$ hg qnew -f p1
$ hg qdiff
diff --git a/a b/ab
copy from a
copy to ab
--- a/a
+++ b/ab
@@ -1,1 +1,2 @@
a
+b
diff --git a/a b/ac
copy from a
copy to ac
--- a/a
+++ b/ac
@@ -1,1 +1,2 @@
a
+c
Refresh and check changes again:
$ hg qrefresh
$ hg qdiff
diff --git a/a b/ab
copy from a
copy to ab
--- a/a
+++ b/ab
@@ -1,1 +1,2 @@
a
+b
diff --git a/a b/ac
copy from a
copy to ac
--- a/a
+++ b/ac
@@ -1,1 +1,2 @@
a
+c
$ cd ..
Issue1441: qrefresh confused after hg rename:
$ hg init repo-1441
$ cd repo-1441
$ echo a > a
$ hg add a
$ hg qnew -f p
$ hg mv a b
$ hg qrefresh
$ hg qdiff
diff -r 000000000000 b
--- /dev/null
+++ b/b
@@ -0,0 +1,1 @@
+a
$ cd ..
Issue2025: qrefresh does not honor filtering options when tip !=
qtip:
$ hg init repo-2025
$ cd repo-2025
$ echo a > a
$ echo b > b
$ hg ci -qAm addab
$ echo a >> a
$ echo b >> b
$ hg qnew -f patch
$ hg up -qC 0
$ echo c > c
$ hg ci -qAm addc
$ hg up -qC 1
refresh with tip != qtip:
$ hg --config diff.nodates=1 qrefresh -I b
$ hg st
M a
$ cat b
b
b
$ cat .hg/patches/patch
# HG changeset patch
# Parent 1a60229be7ac3e4a7f647508e99b87bef1f03593
diff -r 1a60229be7ac b
--- a/b
+++ b/b
@@ -1,1 +1,2 @@
b
+b
$ cd ..
Issue1441 with git patches:
$ hg init repo-1441-git
$ cd repo-1441-git
$ echo "[diff]" >> .hg/hgrc
$ echo "git=True" >> .hg/hgrc
$ echo a > a
$ hg add a
$ hg qnew -f p
$ hg mv a b
$ hg qrefresh
$ hg qdiff --nodates
diff --git a/b b/b
new file mode 100644
--- /dev/null
+++ b/b
@@ -0,0 +1,1 @@
+a
$ cd ..
Refresh with bad usernames. Mercurial used to abort on bad usernames,
but only after writing the bad name into the patch.
$ hg init bad-usernames
$ cd bad-usernames
$ touch a
$ hg add a
$ hg qnew a
$ hg qrefresh -u 'foo
> bar'
transaction abort!
rollback completed
qrefresh interrupted while patch was popped! (revert --all, qpush to recover)
abort: username 'foo\nbar' contains a newline!
[255]
$ rm a
$ cat .hg/patches/a
# HG changeset patch
# Parent 0000000000000000000000000000000000000000
diff --git a/a b/a
new file mode 100644
$ hg qpush
applying a
now at: a
$ hg qrefresh -u ' '
transaction abort!
rollback completed
qrefresh interrupted while patch was popped! (revert --all, qpush to recover)
abort: empty username!
[255]
$ cat .hg/patches/a
# HG changeset patch
# Parent 0000000000000000000000000000000000000000
diff --git a/a b/a
new file mode 100644
$ cd ..
Refresh with phase data:
$ cd repo
$ echo 'babar' >> a
$ hg qnew -m 'update a' p2.diff
$ hg phase p2.diff
2: draft
$ echo 'beber' >> a
$ hg qref
$ hg phase p2.diff
2: draft
$ hg phase --force --secret p2.diff
$ echo 'bibir' >> a
$ hg qref
$ hg phase p2.diff
2: secret
$ cd ..