|
|
#!/bin/bash
|
|
|
#
|
|
|
# produces two repositories with different common and missing subsets
|
|
|
#
|
|
|
# $ discovery-helper.sh REPO NBHEADS DEPT
|
|
|
#
|
|
|
# The Goal is to produce two repositories with some common part and some
|
|
|
# exclusive part on each side. Provide a source repository REPO, it will
|
|
|
# produce two repositories REPO-left and REPO-right.
|
|
|
#
|
|
|
# Each repository will be missing some revisions exclusive to NBHEADS of the
|
|
|
# repo topological heads. These heads and revisions exclusive to them (up to
|
|
|
# DEPTH depth) are stripped.
|
|
|
#
|
|
|
# The "left" repository will use the NBHEADS first heads (sorted by
|
|
|
# description). The "right" use the last NBHEADS one.
|
|
|
#
|
|
|
# To find out how many topological heads a repo has, use:
|
|
|
#
|
|
|
# $ hg heads -t -T '{rev}\n' | wc -l
|
|
|
#
|
|
|
# Example:
|
|
|
#
|
|
|
# The `pypy-2018-09-01` repository has 192 heads. To produce two repositories
|
|
|
# with 92 common heads and ~50 exclusive heads on each side.
|
|
|
#
|
|
|
# $ ./discovery-helper.sh pypy-2018-08-01 50 10
|
|
|
|
|
|
set -euo pipefail
|
|
|
|
|
|
printusage () {
|
|
|
echo "usage: `basename $0` REPO NBHEADS DEPTH [left|right]" >&2
|
|
|
}
|
|
|
|
|
|
if [ $# -lt 3 ]; then
|
|
|
printusage
|
|
|
exit 64
|
|
|
fi
|
|
|
|
|
|
repo="$1"
|
|
|
shift
|
|
|
|
|
|
nbheads="$1"
|
|
|
shift
|
|
|
|
|
|
depth="$1"
|
|
|
shift
|
|
|
|
|
|
doleft=1
|
|
|
doright=1
|
|
|
if [ $# -gt 1 ]; then
|
|
|
printusage
|
|
|
exit 64
|
|
|
elif [ $# -eq 1 ]; then
|
|
|
if [ "$1" == "left" ]; then
|
|
|
doleft=1
|
|
|
doright=0
|
|
|
elif [ "$1" == "right" ]; then
|
|
|
doleft=0
|
|
|
doright=1
|
|
|
else
|
|
|
printusage
|
|
|
exit 64
|
|
|
fi
|
|
|
fi
|
|
|
|
|
|
leftrepo="${repo}-${nbheads}h-${depth}d-left"
|
|
|
rightrepo="${repo}-${nbheads}h-${depth}d-right"
|
|
|
|
|
|
left="first(sort(heads(all()), 'desc'), $nbheads)"
|
|
|
right="last(sort(heads(all()), 'desc'), $nbheads)"
|
|
|
|
|
|
leftsubset="ancestors($left, $depth) and only($left, heads(all() - $left))"
|
|
|
rightsubset="ancestors($right, $depth) and only($right, heads(all() - $right))"
|
|
|
|
|
|
echo '### creating left/right repositories with missing changesets:'
|
|
|
if [ $doleft -eq 1 ]; then
|
|
|
echo '# left revset:' '"'${leftsubset}'"'
|
|
|
fi
|
|
|
if [ $doright -eq 1 ]; then
|
|
|
echo '# right revset:' '"'${rightsubset}'"'
|
|
|
fi
|
|
|
|
|
|
if [ $doleft -eq 1 ]; then
|
|
|
echo '### building left repository:' $left-repo
|
|
|
echo '# cloning'
|
|
|
hg clone --noupdate "${repo}" "${leftrepo}"
|
|
|
echo '# stripping' '"'${leftsubset}'"'
|
|
|
hg -R "${leftrepo}" --config extensions.strip= strip --rev "$leftsubset" --no-backup
|
|
|
fi
|
|
|
|
|
|
if [ $doright -eq 1 ]; then
|
|
|
echo '### building right repository:' $right-repo
|
|
|
echo '# cloning'
|
|
|
hg clone --noupdate "${repo}" "${rightrepo}"
|
|
|
echo '# stripping:' '"'${rightsubset}'"'
|
|
|
hg -R "${rightrepo}" --config extensions.strip= strip --rev "$rightsubset" --no-backup
|
|
|
fi
|
|
|
|