branchcache: add a "pure topological head" fast path
In a narrow but actually quick common case, all topological heads are all on
the same branch and all open. In this case, computing the branch map is very
simple. We can quickly detect situation where this situation will not change.
So we update the V3 format to be able to express this situation and upgrade the
update code to detect we remains in that mode.
The branch cache is populated with the actual value when the branch map is
accessed, but the update_disk method can do the update without needing to
populate it.
#!/bin/bash -e
BUILDDIR=$(dirname $0)
export ROOTDIR=$(cd $BUILDDIR/../..; pwd)
PLATFORM="$1"
shift # extra params are passed to buildrpm
DOCKERFILE="$PLATFORM"
OS_RELEASE="${PLATFORM//[a-z]/}"
case "$PLATFORM" in
fedora*)
DOCKERFILE="${PLATFORM//[0-9]/}.template"
;;
esac
DOCKER=$($BUILDDIR/hg-docker docker-path)
CONTAINER=hg-docker-$PLATFORM
DOCKERUID=$(id -u)
DOCKERGID=$(id -g)
$BUILDDIR/hg-docker build \
--build-arg UID=$DOCKERUID \
--build-arg GID=$DOCKERGID \
--build-arg OS_RELEASE=${OS_RELEASE:-latest} \
$BUILDDIR/docker/$DOCKERFILE $CONTAINER
RPMBUILDDIR=$ROOTDIR/packages/$PLATFORM
mkdir -p $RPMBUILDDIR
$ROOTDIR/contrib/packaging/buildrpm --rpmbuilddir $RPMBUILDDIR --prepare $*
DSHARED=/mnt/shared
DBUILDUSER=build
$DOCKER run -e http_proxy -e https_proxy -u $DBUILDUSER --rm -v $RPMBUILDDIR:$DSHARED $CONTAINER \
rpmbuild --define "_topdir $DSHARED" -ba $DSHARED/SPECS/mercurial.spec --clean
$DOCKER run -e http_proxy -e https_proxy -u $DBUILDUSER --rm -v $RPMBUILDDIR:$DSHARED $CONTAINER \
createrepo $DSHARED
cat << EOF > $RPMBUILDDIR/mercurial.repo
# Place this file in /etc/yum.repos.d/mercurial.repo
[mercurial]
name=Mercurial packages for $PLATFORM
# baseurl=file://$RPMBUILDDIR/
baseurl=http://hg.example.com/build/$PLATFORM/
skip_if_unavailable=True
gpgcheck=0
enabled=1
EOF
echo
echo "Build complete - results can be found in $RPMBUILDDIR"