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authorSam Hocevar <sam@hocevar.net>2015-12-19 09:39:40 (GMT)
committerJunio C Hamano <gitster@pobox.com>2015-12-21 19:26:55 (GMT)
commit1f90a64891ed83e172cbf605890044dba8315073 (patch)
treeae54b0eb2d3f83586a5d861b8ad3ae5b38b4c5e7
parentcbc692425cb8824b603da90929909ee8f4a8e0e0 (diff)
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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>
-rwxr-xr-xgit-p4.py44
-rwxr-xr-xt/t9818-git-p4-block.sh2
2 files changed, 22 insertions, 24 deletions
diff --git a/git-p4.py b/git-p4.py
index 2f10f01..45785da 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 64510b7..8840a18 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 \