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#!/bin/bash
set -e
# Start a local schroot instance with the requested arch and distro
# This script is meant to be executed from Jenkins jobs inside TCWG
# lab. It prints shell commands meant to be executed in the parent
# shell, consisting in:
# - a cleanup statement, to remove the container on exit for instance
# - definition of ${CONTAINER}, used to prefix commands that you want
# to run inside the container.
# - definition of ${session_host} and ${session_port}, can be used for
# a remote connexion to the container
usage() {
echo "Usage: $0 --arch container-arch --distro flavour [--session-host host] [--session-name name] [--task {build|test}]"
echo
echo " container-arch: architecture (eg: amd64, i386, arm64, armhf)"
echo " distro: distribution (eg: trusty)"
echo " session-host: hostname where the container will run, defaults to localhost"
echo " useful if the name resolution does not work correctly"
echo " session-name: session, in case the default '$BUILD_NUMBER-$JOB_NAME' is not suitable"
echo " task: type of container (build or test, default=build)"
exit 1
}
# Save stdout/stderr file descriptors
exec 3>&1 4>&2
# Make sure all output goes to stderr
exec 1>&2
container_arch=
distro=
session_host=
session_name=
task="build"
while [ $# -ge 1 ]
do
case $1 in
--arch)
container_arch=$2
[ x${container_arch} = x ] && usage
shift 2
;;
--distro)
distro=$2
[ x${distro} = x ] && usage
shift 2
;;
--session-host)
session_host=$2
[ x${session_host} = x ] && usage
shift 2
;;
--session-name)
session_name=$2
[ x${session_name} = x ] && usage
shift 2
;;
--task)
task=$2
[ x${task} = x ] && usage
shift 2
;;
*)
echo "Unsupported option: $1"
usage
;;
esac
done
[ x${container_arch} = x ] && usage
[ x${distro} = x ] && usage
[ x"$session_host" = x ] && session_host=localhost
# Append .tcwglab if not already present
case ${session_host} in
*.tcwglab) ;;
*) session_host=${session_host}.tcwglab
esac
session_port=22
schroot_image="tcwg-${task}-${container_arch}-${distro}"
SCHROOT="ssh -p ${session_port} -A ${session_host} schroot"
session_id=$(${SCHROOT} -b -c chroot:$schroot_image --preserve-environment)
if [ x"$session_id" = x ]; then
exit 1
fi
# Restore stdout/stderr
exec 1>&3 2>&4
cat <<EOF
ulimit -u 5000 # FIXME how to support this remotely?
# Sometimes /dev/pts can't get unmounted on the first try.
# Workaround by retrying.
CONTAINER="${SCHROOT} -r -c session:$session_id --preserve-environment -- "
CONTAINER_CLEANUP="${SCHROOT} -f -e -c session:$session_id"
session_host=${session_host}
session_port=${session_port}
EOF
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