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|
#!/bin/bash
USAGE="Proper Usage: $0 image cmd [...]"
if [ $# -lt 2 ]
then
echo "$USAGE" 1>&2
echo "ERROR - please specify an image and command to execute" 1>&2
exit 1
fi
image=$1
shift
cmd=$2
shifter=$(which shifter 2>/dev/null || true)
docker=$(which docker 2>/dev/null || true)
cmd2=$(which cmd 2>/dev/null || true)
set -e
set -o pipefail
RUN_PREFIX=
if [ -x "${cmd2}" ]
then
# no need for shifter or docker
RUN_PREFIX=time
elif [ -x "${shifter}" ]
then
img=$(${shifter}img lookup $image 1>&2 || true)
[ -z "$img" ] && ${shifter}img pull $image 1>&2 && img=$(${shifter}img lookup $image)
if [ -z "$img" ]
then
echo "$USAGE" 1>&2
echo "ERROR - shifter could not pull $image" 1>&2
exit 1
fi
RUN_PREFIX="shifter --image=id:${img}"
elif [ -x "${docker}" ]
then
if ! docker pull $image 1>&2
then
echo "$USAGE" 1>&2
echo "ERROR - docker could not pull $image" 1>&2
exit 1
fi
img=$image
volumes="--volume=$(pwd):$(pwd) --workdir=$(pwd)"
if [ -n "$VOLUMES" ]
then
for v in $VOLUMES
do
volumes="$volumes --volume=$v:$v"
done
fi
RUN_PREFIX="docker run -i --tty=false -a STDIN -a STDOUT -a STDERR --user $(id -u):$(id -g) $volumes ${img}"
else
echo "$USAGE" 1>&2
echo "Could not find '$cmd' or shifter or docker for image=$image. Please update your PATH" 1>&2
exit 1
fi
echo "Executing '$RUN_PREFIX $@' at $(date) on $(uname -n)" 1>&2
ret=0
$RUN_PREFIX $@ || ret=$?
if [ $ret -ne 0 ]
then
echo "ERROR exit $ret for command '$RUN_PREFIX $@' at $(date)" 1>&2
exit $ret
else
echo "Finished at $(date) with $SECONDS s runtime" 1>&2
fi
|
