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|
#!/bin/bash
usage() {
cat << EOF
Install (or upgrade) an umbrella Helm Chart, and its subcharts, as separate Helm Releases
The umbrella Helm Chart is broken apart into a parent release and subchart releases.
Subcharts the are disabled (<chart>.enabled=false) will not be installed or upgraded.
All releases are grouped and deployed within the same namespace.
The deploy arguments must be a release and chart. The chart
argument can be either: a chart reference('stable/onap'), a path to a chart directory,
a packaged chart, or a fully qualified URL. For chart references, the latest
version will be specified unless the '--version' flag is set.
To override values in a chart, use either the '--values' flag and pass in a file
or use the '--set' flag and pass configuration from the command line, to force string
values, use '--set-string'.
You can specify the '--values'/'-f' flag multiple times. The priority will be given to the
last (right-most) file specified. For example, if both myvalues.yaml and override.yaml
contained a key called 'Test', the value set in override.yaml would take precedence:
$ helm deploy demo ./onap --namespace onap -f openstack.yaml -f overrides.yaml
You can specify the '--set' flag multiple times. The priority will be given to the
last (right-most) set specified. For example, if both 'bar' and 'newbar' values are
set for a key called 'foo', the 'newbar' value would take precedence:
$ helm deploy demo local/onap --namespace onap -f overrides.yaml --set log.enabled=false --set vid.enabled=false
Usage:
helm deploy [RELEASE] [CHART] [flags]
Flags:
--namespace string namespace to install the release into. Defaults to the current kube config namespace.
--set stringArray set values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
--set-string stringArray set STRING values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
-f, --values valueFiles specify values in a YAML file or a URL(can specify multiple) (default [])
EOF
}
parse_yaml() {
local prefix=$2
local s='[[:space:]]*' w='[a-zA-Z0-9_]*' fs=$(echo @|tr @ '\034')
sed -ne "s|^\($s\)\($w\)$s:$s\"\(.*\)\"$s\$|\1$fs\2$fs\3|p" \
-e "s|^\($s\)\($w\)$s:$s\(.*\)$s\$|\1$fs\2$fs\3|p" $1 |
awk -F$fs '{
indent = length($1)/2;
vname[indent] = $2;
for (i in vname) {if (i > indent) {delete vname[i]}}
if (length($3) > 0) {
vn=""; for (i=0; i<indent; i++) {vn=(vn)(vname[i])("_")}
printf("%s%s%s=\"%s\"\n", "'$prefix'",vn, $2, $3);
}
}'
}
generate_overrides() {
SUBCHART_NAMES=($(cat $COMPUTED_OVERRIDES | grep -v '^\s\s'))
for index in "${!SUBCHART_NAMES[@]}"; do
START=${SUBCHART_NAMES[index]}
END=${SUBCHART_NAMES[index+1]}
if [[ $START == "global:" ]]; then
echo "global:" > $GLOBAL_OVERRIDES
cat $COMPUTED_OVERRIDES | sed '/common:/,/consul:/d' \
| sed -n '/'"$START"'/,/'log:'/p' | sed '1d;$d' >> $GLOBAL_OVERRIDES
else
SUBCHART_DIR="$CACHE_SUBCHART_DIR/$(cut -d':' -f1 <<<"$START")"
if [[ -d "$SUBCHART_DIR" ]]; then
cat $COMPUTED_OVERRIDES | sed -n '/'"$START"'/,/'"$END"'/p' \
| sed '1d;$d' | cut -c3- > $SUBCHART_DIR/subchart-overrides.yaml
fi
fi
done
}
deploy() {
RELEASE=$1
CHART_URL=$2
FLAGS=${@:3}
CHART_REPO="$(cut -d'/' -f1 <<<"$CHART_URL")"
CHART_NAME="$(cut -d'/' -f2 <<<"$CHART_URL")"
CACHE_DIR=~/.helm/plugins/deploy/cache
CHART_DIR=$CACHE_DIR/$CHART_NAME
CACHE_SUBCHART_DIR=$CHART_DIR-subcharts
# should pass all flags instead
NAMESPACE="$(echo $FLAGS | sed -n 's/.*\(namespace\).\s*/\1/p' | cut -c10-)"
# clear previously cached charts
rm -rf $CACHE_DIR
# fetch umbrella chart (parent chart containing subcharts)
if [[ -d "$CHART_URL" ]]; then
mkdir -p $CHART_DIR
cp -R $CHART_URL/* $CHART_DIR/
cd $CHART_DIR/charts/
for subchart in * ; do
tar xzf ${subchart}
done
rm -rf *.tgz
else
helm fetch $CHART_URL --untar --untardir $CACHE_DIR
fi
# move out subcharts to process separately
mkdir -p $CACHE_SUBCHART_DIR
mv $CHART_DIR/charts/* $CACHE_SUBCHART_DIR/
# temp hack - parent chart needs common subchart
mv $CACHE_SUBCHART_DIR/common $CHART_DIR/charts/
# disable dependencies
rm $CHART_DIR/requirements.lock
mv $CHART_DIR/requirements.yaml $CHART_DIR/requirements.deploy
# compute overrides for parent and all subcharts
COMPUTED_OVERRIDES=$CACHE_DIR/$CHART_NAME/computed-overrides.yaml
helm upgrade -i $RELEASE $CHART_DIR $FLAGS --dry-run --debug \
| sed -n '/COMPUTED VALUES:/,/HOOKS:/p' | sed '1d;$d' > $COMPUTED_OVERRIDES
# extract global overrides to apply to parent and all subcharts
GLOBAL_OVERRIDES=$CHART_DIR/global-overrides.yaml
generate_overrides $COMPUTED_OVERRIDES $GLOBAL_OVERRIDES
# upgrade/install parent chart first
helm upgrade -i $RELEASE $CHART_DIR --namespace $NAMESPACE -f $COMPUTED_OVERRIDES
# parse computed overrides - will use to determine if a subchart is "enabled"
eval $(parse_yaml $COMPUTED_OVERRIDES "computed_")
# upgrade/install each "enabled" subchart
cd $CACHE_SUBCHART_DIR
for subchart in * ; do
VAR="computed_${subchart}_enabled"
COMMAND="$"$VAR
eval "SUBCHART_ENABLED=$COMMAND"
if [[ $SUBCHART_ENABLED == "true" ]]; then
SUBCHART_OVERRIDES=$CACHE_SUBCHART_DIR/$subchart/subchart-overrides.yaml
helm upgrade -i "${RELEASE}-${subchart}" $CACHE_SUBCHART_DIR/$subchart \
--namespace $NAMESPACE -f $GLOBAL_OVERRIDES -f $SUBCHART_OVERRIDES
fi
done
}
if [[ $# < 2 ]]; then
usage
exit 0
fi
case "${1:-"help"}" in
"help")
usage
;;
"--help")
usage
;;
"-h")
usage
;;
*)
deploy $1 $2 ${@:3}
;;
esac
exit 0
|
