Files
container.training/prepare-labs/dns-netlify.sh
2024-08-07 09:53:47 -05:00

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#!/bin/sh
set -eu
# https://open-api.netlify.com/#tag/dnsZone
[ "${1-}" ] || {
echo ""
echo "Add a record in Netlify DNS."
echo "This script is hardcoded to add a record to container.training".
echo ""
echo "Syntax:"
echo "$0 list"
echo "$0 add <name> <ipaddr>"
echo "$0 del <recordid>"
echo ""
echo "Example to create a A record for eu.container.training:"
echo "$0 add eu A 185.145.250.0"
echo ""
exit 1
}
NETLIFY_CONFIG_FILE=~/.config/netlify/config.json
if ! [ "${DOMAIN-}" ]; then
DOMAIN=container.training
fi
if ! [ -f "$NETLIFY_CONFIG_FILE" ]; then
echo "Could not find Netlify configuration file ($NETLIFY_CONFIG_FILE)."
echo "Try to run the following command, and try again:"
echo "npx netlify-cli login"
exit 1
fi
if ! command -v http >/dev/null; then
echo "Could not find the 'http' command line tool."
echo "Please install it (the package name might be 'httpie')."
exit 1
fi
NETLIFY_USERID=$(jq .userId < "$NETLIFY_CONFIG_FILE")
NETLIFY_TOKEN=$(jq -r .users[$NETLIFY_USERID].auth.token < "$NETLIFY_CONFIG_FILE")
netlify() {
URI=$1
shift
http https://api.netlify.com/api/v1/$URI "$@" "Authorization:Bearer $NETLIFY_TOKEN"
}
ZONE_ID=$(netlify dns_zones |
jq -r '.[] | select ( .name == "'$DOMAIN'" ) | .id')
_list() {
netlify dns_zones/$ZONE_ID/dns_records |
jq -r '.[] | select(.type=="A" or .type=="AAAA") | [.hostname, .type, .value, .id] | @tsv' |
sort |
column --table
}
_add() {
NAME=$1.$DOMAIN
TYPE=$2
VALUE=$3
# It looks like if we create two identical records, then delete one of them,
# Netlify DNS ends up in a weird state (the name doesn't resolve anymore even
# though it's still visible through the API and the website?)
if netlify dns_zones/$ZONE_ID/dns_records |
jq '.[] | select(.hostname=="'$NAME'" and .type=="'$TYPE'" and .value=="'$VALUE'")' |
grep .
then
echo "It looks like that record already exists. Refusing to create it."
exit 1
fi
netlify dns_zones/$ZONE_ID/dns_records type=$TYPE hostname=$NAME value=$VALUE ttl=300
netlify dns_zones/$ZONE_ID/dns_records |
jq '.[] | select(.hostname=="'$NAME'")'
}
_del() {
RECORD_ID=$1
# OK, since that one is dangerous, I'm putting the whole request explicitly here
http DELETE \
https://api.netlify.com/api/v1/dns_zones/$ZONE_ID/dns_records/$RECORD_ID \
"Authorization:Bearer $NETLIFY_TOKEN"
}
case "$1" in
list)
_list
;;
add)
_add $2 $3 $4
;;
del)
_del $2
;;
*)
echo "Unknown command '$1'."
exit 1
;;
esac