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Introduce docker version check into scope script, error on <1.5.0

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This commit is contained in:
Tom Wilkie
2015-10-11 18:56:30 +00:00
parent e99c111413
commit 7f21622d37
1 changed files with 30 additions and 0 deletions
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30
scope
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@@ -30,6 +30,34 @@ WEAVESCOPE_DOCKER_ARGS=${WEAVESCOPE_DOCKER_ARGS:-}
COMMAND=$1
shift 1
# - The image embeds the weave script & Docker 1.3.1 client
# - Docker versions prior to 1.5.0 do not support --pid=host
MIN_DOCKER_VERSION=1.5.0
check_docker_version() {
if ! DOCKER_VERSION=$(docker -v | sed -n -e 's|^Docker version \([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*|\1|p') || [ -z "$DOCKER_VERSION" ] ; then
echo "ERROR: Unable to parse docker version" >&2
exit 1
fi
DOCKER_VERSION_MAJOR=$(echo "$DOCKER_VERSION" | cut -d. -f 1)
DOCKER_VERSION_MINOR=$(echo "$DOCKER_VERSION" | cut -d. -f 2)
DOCKER_VERSION_PATCH=$(echo "$DOCKER_VERSION" | cut -d. -f 3)
MIN_DOCKER_VERSION_MAJOR=$(echo "$MIN_DOCKER_VERSION" | cut -d. -f 1)
MIN_DOCKER_VERSION_MINOR=$(echo "$MIN_DOCKER_VERSION" | cut -d. -f 2)
MIN_DOCKER_VERSION_PATCH=$(echo "$MIN_DOCKER_VERSION" | cut -d. -f 3)
if [ \( "$DOCKER_VERSION_MAJOR" -lt "$MIN_DOCKER_VERSION_MAJOR" \) -o \
\( "$DOCKER_VERSION_MAJOR" -eq "$MIN_DOCKER_VERSION_MAJOR" -a \
\( "$DOCKER_VERSION_MINOR" -lt "$MIN_DOCKER_VERSION_MINOR" -o \
\( "$DOCKER_VERSION_MINOR" -eq "$MIN_DOCKER_VERSION_MINOR" -a \
\( "$DOCKER_VERSION_PATCH" -lt "$MIN_DOCKER_VERSION_PATCH" \) \) \) \) ] ; then
echo "ERROR: scope requires Docker version $MIN_DOCKER_VERSION or later; you are running $DOCKER_VERSION" >&2
exit 1
fi
}
# Check that a container named $1 with image $2 is not running
check_not_running() {
case $(docker inspect --format='{{.State.Running}} {{.Config.Image}}' $1 2>/dev/null) in
@@ -64,6 +92,8 @@ launch_command() {
$WEAVESCOPE_DOCKER_ARGS $SCOPE_IMAGE --probe.docker true "$@"
}
check_docker_version
case "$COMMAND" in
command)
launch_command "$@"