mirror of
https://github.com/facebook/sapling.git
synced 2024-10-06 14:58:03 +03:00
ab3a7cb21f
Summary: In preparation for merging fb-mercurial sources to the Eden repository, move everything from the top-level directory into an `eden/scm` subdirectory.
139 lines
3.4 KiB
Python
139 lines
3.4 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2.
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from __future__ import absolute_import
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import os
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from bindings import tracing
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from testutil.autofix import eq
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from testutil.dott import feature, sh, testtmp # noqa: F401
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os.environ["EDENSCM_TRACE_LEVEL"] = "trace"
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idtopath = {}
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def getidtopath():
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"""Return a dict mapping from id (in hex form) to path"""
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output = sh.hg("debugmanifestdirs", "-rall()")
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# debugmanifestdirs prints "<id> <path>" per line
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result = dict(l.split() for l in output.splitlines())
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return result
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def collectprefetch(command):
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"""Updating to commit, check prefetched paths"""
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d = tracing.tracingdata()
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with d:
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(sh % command).output
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ids = []
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for span in d.treespans().values()[0]:
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name = span.get("name")
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if name == "tree::store::prefetch":
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ids += span["ids"].split()
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elif name == "tree::store::get":
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ids.append(span["id"])
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idtopath.update(getidtopath())
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paths = set(idtopath[id] for id in set(ids)) - {"/"}
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# Translate ids to paths
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return sorted(filter(None, paths))
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# Use some production settings. They avoid expensive paths.
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sh % "setconfig experimental.copytrace=off copytrace.fastcopytrace=true perftweaks.disablecasecheck=true"
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sh % "enable sparse treemanifest rebase copytrace"
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# flatcompat calls '.text()' which invalidates fast paths. So disable it.
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sh % "setconfig treemanifest.flatcompat=0"
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sh % "newrepo"
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sh % "drawdag" << r"""
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B # B/x/x/y/z=B1
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| # B/y/x/y/z=B2
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| D # D/d/d/d/d=D1
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| C # C/c/c/c/c=C1
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|/
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A # A/x/x/y/z=A1
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# A/y/x/y/z=A2
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# A/z/x/y/z=A3
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"""
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sh % "hg sparse include x"
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# Good: Updating to A should avoid downloading y/ or z/
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eq(collectprefetch("hg update -q $A"), ["x", "x/x", "x/x/y"])
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# Good: Updating to B should avoid downloading y/
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eq(collectprefetch("hg update -q $B"), ["x", "x/x", "x/x/y"])
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sh % "hg update -q $D"
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# Good: Rebasing B to D should avoid downloading d/ or c/, or z/.
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# (This is optimized by "rebase: use matcher to optimize manifestmerge",
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# https://www.mercurial-scm.org/repo/hg/rev/4d504e541d3d,
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# fbsource-hg: 94ad1b49ede1f8e5897c7c9381304785746fa460)
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eq(
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collectprefetch("hg rebase -r $B -d $D -q"),
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["x", "x/x", "x/x/y", "y", "y/x", "y/x/y"],
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)
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# Good: Changing sparse profile should not download everything.
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eq(collectprefetch("hg sparse exclude y"), ["x", "x/x", "x/x/y"])
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# Test sparse profile change.
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sh % "newrepo"
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sh % "drawdag" << r"""
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# B/profile=[include]\nx\ny
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B # B/x/x/x=2
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| # B/y/y/y=2
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| # B/z/z/z=2
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A # A/profile=[include]\nx
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# A/x/x/x=1
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# A/y/y/y=1
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# A/z/z/z=1
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"""
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idtopath = getidtopath()
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eq(collectprefetch("hg sparse enable profile"), [])
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# Good: Updating to A should avoid downloading y/ or z/
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eq(collectprefetch("hg update -q $A"), ["x", "x/x"])
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# Good: Updating to B should avoid downloading z/
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eq(collectprefetch("hg update -q $B"), ["x", "x/x", "y", "y/y"])
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# Test 'status'.
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sh % "newrepo"
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sh % "drawdag" << r"""
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A # A/x/x/x=1
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# A/y/y/y=1
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# A/z/z/z=1
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"""
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eq(collectprefetch("hg sparse include x"), [])
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sh % "hg up -q $A"
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open("y", "w").write("2")
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os.mkdir("z")
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open("z/1", "w").write("2")
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open("z/z", "w").write("2")
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# Good: 'status' should avoid downloading y/ or z/.
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eq(collectprefetch("hg status"), ["x", "x/x"])
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