branchcache: skip entries that are topological heads in the on disk file
In the majority of cases, topological heads are also branch heads. We have
efficient way to get the topological heads and efficient way to retrieve
their branch information. So there is little value in putting them in the branch
cache file explicitly. On the contrary, writing them explicitly tend to create
very large cache file that are inefficient to read and update.
So the branch cache v3 format is no longer including them. This changeset focus
on the format aspect and have no focus on the performance aspect. We will cover
that later.
#!/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"