From 1f90a64891ed83e172cbf605890044dba8315073 Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Sat, 19 Dec 2015 09:39:40 +0000
Subject: [PATCH] git-p4: reduce number of server queries for fetches
When fetching changes from a depot using a full client spec, there
is no need to perform as many queries as there are top-level paths
in the client spec. Instead we query all changes in chronological
order, also getting rid of the need to sort the results and remove
duplicates.
Signed-off-by: Sam Hocevar <sam@hocevar.net>
Signed-off-by: Luke Diamand <luke@diamand.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
git-p4.py | 44 ++++++++++++++++++++---------------------
t/t9818-git-p4-block.sh | 2 +-
2 files changed, 22 insertions(+), 24 deletions(-)
diff --git a/git-p4.py b/git-p4.py
index 2f10f01d34..45785da7cd 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -822,39 +822,37 @@ def p4ChangesForPaths(depotPaths, changeRange, requestedBlockSize):
die("cannot use --changes-block-size with non-numeric revisions")
block_size = None
- # Accumulate change numbers in a dictionary to avoid duplicates
- changes = {}
+ changes = []
- for p in depotPaths:
- # Retrieve changes a block at a time, to prevent running
- # into a MaxResults/MaxScanRows error from the server.
+ # Retrieve changes a block at a time, to prevent running
+ # into a MaxResults/MaxScanRows error from the server.
- while True:
- cmd = ['changes']
+ while True:
+ cmd = ['changes']
- if block_size:
- end = min(changeEnd, changeStart + block_size)
- revisionRange = "%d,%d" % (changeStart, end)
- else:
- revisionRange = "%s,%s" % (changeStart, changeEnd)
+ if block_size:
+ end = min(changeEnd, changeStart + block_size)
+ revisionRange = "%d,%d" % (changeStart, end)
+ else:
+ revisionRange = "%s,%s" % (changeStart, changeEnd)
+ for p in depotPaths:
cmd += ["%s...@%s" % (p, revisionRange)]
- for line in p4_read_pipe_lines(cmd):
- changeNum = int(line.split(" ")[1])
- changes[changeNum] = True
+ # Insert changes in chronological order
+ for line in reversed(p4_read_pipe_lines(cmd)):
+ changes.append(int(line.split(" ")[1]))
- if not block_size:
- break
+ if not block_size:
+ break
- if end >= changeEnd:
- break
+ if end >= changeEnd:
+ break
- changeStart = end + 1
+ changeStart = end + 1
- changelist = changes.keys()
- changelist.sort()
- return changelist
+ changes = sorted(changes)
+ return changes
def p4PathStartsWith(path, prefix):
# This method tries to remedy a potential mixed-case issue:
diff --git a/t/t9818-git-p4-block.sh b/t/t9818-git-p4-block.sh
index 64510b794a..8840a183ac 100755
--- a/t/t9818-git-p4-block.sh
+++ b/t/t9818-git-p4-block.sh
@@ -128,7 +128,7 @@ test_expect_success 'Create a repo with multiple depot paths' '
done
'
-test_expect_failure 'Clone repo with multiple depot paths' '
+test_expect_success 'Clone repo with multiple depot paths' '
(
cd "$git" &&
git p4 clone --changes-block-size=4 //depot/pathA@all //depot/pathB@all \
--
2.40.0