DNSControl Compiler

dnscc.bash

#!/usr/bin/env bash
: <<'!COMMENT'

DNSControl Compiler v201712120445
Louis T. Getterman IV (@LTGIV)
https://Thad.Getterman.org/2017/12/11/dnscontrol-compiler

# DNSControl
https://github.com/StackExchange/dnscontrol
https://github.com/StackExchange/dnscontrol/blob/master/docs/getting-started.md

# Encrypt creds.json
https://www.agwa.name/projects/git-crypt/
https://github.com/StackExchange/blackbox

!COMMENT

################################################################################
SOURCE="${BASH_SOURCE[0]}" # Dave Dopson, Thank You! - http://stackoverflow.com/questions/59895/can-a-bash-script-tell-what-directory-its-stored-in
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
	SCRIPTPATH="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
	SOURCE="$(readlink "$SOURCE")"
	[[ $SOURCE != /* ]] && SOURCE="$SCRIPTPATH/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
################################################################################
SCRIPTPATH="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
SCRIPTNAME=`basename "$SOURCE"`
################################################################################

# Compile
: <<'!COMMENT'
	https://github.com/StackExchange/dnscontrol/issues/51
	https://stackoverflow.com/questions/24069173/recursive-cat-all-the-files-into-single-file
!COMMENT
DNSCONFIGJS="${SCRIPTPATH}/dnsconfig.js"
cat "${SCRIPTPATH}/global.js" > "${DNSCONFIGJS}"
find "${SCRIPTPATH}/domains" -type f -name '*.js' -exec cat {} \; >> "${DNSCONFIGJS}"

# Mode
COMMAND=${1-preview}
case "$COMMAND" in
"preview")
	echo "You're in preview mode, ^C to abort."
	echo "Please use '${SCRIPTNAME} push' when you're ready to save changes."
	sleep 2
    true
    ;;
"push")
	echo "Saving changes."
    true
    ;;
*)
: <<'!COMMENT'
	Other modes offered by DNSControl, such as:
	check
	print-ir
	version
	create-domains
	help
!COMMENT
    false
    ;;
esac

# Pull
docker pull stackexchange/dnscontrol

# Run
docker \
	run \
	--rm \
	-it \
	-v "${DNSCONFIGJS}":/dns/dnsconfig.js \
	-v "${SCRIPTPATH}/creds.json":/dns/creds.json \
	stackexchange/dnscontrol \
	dnscontrol ${COMMAND}

# Clean-up
rm -rf "${DNSCONFIGJS}"