Files
scylladb/tools/toolchain/dbuild
Benny Halevy 0f01a4c1b8 dbuild: add usage
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2019-09-11 12:53:02 +03:00

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#!/bin/bash
here="$(realpath $(dirname "$0"))"
toplevel="$(realpath "$here/../..")"
group_args=()
docker_args=()
image="$(<"$here/image")"
for gid in $(id -G); do
group_args+=(--group-add "$gid")
done
interactive=
function help () {
cat <<EOF 1>&2
NAME
$(basename $0) - Run a command in scylla's frozen toolchain docker build image.
SYNOPSIS
$0 [OPTIONS --] [command [arg ...]]
DESCRIPTION
$(basename $0) is used mainly to build scylla in a docker image containing
a frozen version of the toolchain.
When no command is provided, $(basename $0) runs an interactive shell in
the docker instance. The image to use is taken by default from "$(dirname $0)/image".
It may be overriden using the --image option.
When providing docker options, the options list must be terminated with \`--'.
OPTIONS
-h | --help
Print this help message.
--image [IMAGE]
Use the specified docker IMAGE.
If omitted, list the available images using \`docker image ls'
-i | --interactive
Run an interactive session.
See \`docker help run' for available options.
EOF
exit 0
}
function usage () {
cat <<EOF 1>&2
$1
Run \`$0 --help' to print the full help message.
EOF
exit 1
}
if [[ $# -eq 0 ]]; then
interactive=y
docker_args=(-it)
elif [[ "$1" = -* ]]; then
while [[ "$1" != "--" && $# != 0 ]]; do
case "$1" in
-h|--help)
help
;;
--image)
image="$2"
shift 2
if [[ -z "$image" ]]; then
exec docker image ls
fi
if ! docker image inspect "$image" >/dev/null; then
usage
fi
continue
;;
--*)
if [[ "$1" = --interactive || "$1" = --interactive=true ]]; then
interactive=y
fi
;;
-*)
if [[ "$1" = -*i* ]]; then
interactive=y
fi
;;
*)
;;
esac
docker_args+=("$1")
shift
done
if [[ "$1" != "--" ]]; then
usage "Expected '--' to terminate docker flag list"
fi
shift
fi
if [[ $# != 0 ]]; then
args=("$@")
else
args=(/bin/bash -i)
fi
MAVEN_LOCAL_REPO="$HOME/.m2"
mkdir -p "$MAVEN_LOCAL_REPO"
docker_common_args=(
--network host \
-u "$(id -u):$(id -g)" \
"${group_args[@]}" \
--cap-add SYS_PTRACE \
-v "$PWD:$PWD:z" \
-v "$toplevel:$toplevel:z" \
-v /tmp:/tmp:z \
-v "$MAVEN_LOCAL_REPO:$MAVEN_LOCAL_REPO:z" \
-v /etc/passwd:/etc/passwd:ro \
-v /etc/group:/etc/group:ro \
-v /etc/localtime:/etc/localtime:ro \
-w "$PWD" \
"${docker_args[@]}" \
"$image" \
"${args[@]}"
)
if [[ -n "$interactive" ]]; then
# If --interactive was given on the command line, we can't run in detached mode
# as it will be impossible to interact with the container.
exec docker run --rm "${docker_common_args[@]}"
fi
container=$(
docker run \
"--detach=true" \
"${docker_common_args[@]}"
)
kill_it() {
if [[ -n "$container" ]]; then
docker rm -f "$container" > /dev/null
container=
fi
}
trap kill_it SIGTERM SIGINT SIGHUP EXIT
docker logs --follow "$container"
if [[ -n "$container" ]]; then
exitcode="$(docker wait "$container")"
else
exitcode=99
fi
kill_it
trap - SIGTERM SIGINT SIGHUP EXIT
# after "docker kill", docker wait will not print anything
[[ -z "$exitcode" ]] && exitcode=1
exit "$exitcode"