build.sh

#!/bin/bash


# The following code is necessary to make CLI arguments work (with long flag names).
# These arguments are necessary to make the script configurable and testable.
TEMP=$(getopt -o o: --long configs:,conditions:,output: \
              -n 'build' -- "$@")

if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi

OUTPUT=./build
CONDITIONS=./conditions
CONFIGS=./remote_configurations
CLUSTER_MAPPING=cluster-mapping.json

while true; do
  case "$1" in
    --configs ) CONFIGS=$2 ; shift 2 ;;
    --conditions ) CONDITIONS=$2 ; shift 2 ;;
    -o | --output ) OUTPUT=$2 ; shift 2 ;;
    -- ) shift; break ;;
    * ) break ;;
  esac
done

mkdir -p ${OUTPUT}/v1
mkdir -p ${OUTPUT}/v2

# Build the conditions for v1 endpoint
VERSION=$(git describe --tags --abbrev=0)
jq --arg VERSION $VERSION \
    -s '{ version: $VERSION, rules: map(.) }' ${CONDITIONS}/*.json > ${OUTPUT}/v1/rules.json

# Build remote configurations
for config_template in ${CONFIGS}/*; do
    # build JSON array with contents of all required conditions
    contents='['
    while read -r condition; do
	contents+=$(cat ${CONDITIONS}/${condition}.json)
	contents+=','
    done < <(jq -r '.conditional_gathering_rules[]' $config_template)
    # remove last comma from the array
    contents=${contents%?}
    contents+=']'
    # build entire config with contents and the version
    jq --argjson contents "${contents}" --arg VERSION $VERSION '.version=$VERSION | .conditional_gathering_rules=$contents' $config_template > ${OUTPUT}/v2/$(basename $config_template)
done

cp ${CLUSTER_MAPPING} ${OUTPUT}/