Mercurial > hg
view tests/test-diff-reverse.t @ 33269:ead6749354e1
phabricator: try to fetch differential revisions in batch
Previously, we read Differential Revisions one by one by calling
`differential.query`.
Fetching them one by one is suboptimal. Unfortunately, there is no Conduit
API that allows us to get a stack of diffids using a single API call.
This patch tries to be smarter using a simple heuristic: when fetching D59
as a stack, previous IDs like D51, D52, D53, ..., D58 are likely belonging
to a same stack so just fetch them as well. Since `differential.query` only
returns cheap metadata without expensive diff content, it shouldn't be a big
problem for the server.
Using a test Phabricator instance, this patch reduces `phabread` reading a
10 patch stack from about 13 to 30 seconds to 8 seconds.
author | Jun Wu <quark@fb.com> |
---|---|
date | Tue, 04 Jul 2017 16:36:48 -0700 |
parents | c586cb50872b |
children | 55c6ebd11cb9 |
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$ hg init $ cat > a <<EOF > a > b > c > EOF $ hg ci -Am adda adding a $ cat > a <<EOF > d > e > f > EOF $ hg ci -m moda $ hg diff --reverse -r0 -r1 diff -r 2855cdcfcbb7 -r 8e1805a3cf6e a --- a/a Thu Jan 01 00:00:00 1970 +0000 +++ b/a Thu Jan 01 00:00:00 1970 +0000 @@ -1,3 +1,3 @@ -d -e -f +a +b +c $ cat >> a <<EOF > g > h > EOF $ hg diff --reverse --nodates diff -r 2855cdcfcbb7 a --- a/a +++ b/a @@ -1,5 +1,3 @@ d e f -g -h should show removed file 'a' as being added $ hg revert a $ hg rm a $ hg diff --reverse --nodates a diff -r 2855cdcfcbb7 a --- /dev/null +++ b/a @@ -0,0 +1,3 @@ +d +e +f should show added file 'b' as being removed $ echo b >> b $ hg add b $ hg diff --reverse --nodates b diff -r 2855cdcfcbb7 b --- a/b +++ /dev/null @@ -1,1 +0,0 @@ -b