Improving Caddyfile build process.

.gitignore

@@ -14,3 +14,7 @@ terraform.tfstate
 terraform.tfstate.backup
 
 app
+
+apps.config
+
+all-apps/lb/Caddyfile

Makefile

@@ -6,7 +6,10 @@ app/.dirstamp: all-apps/app.service all-apps/docker-compose.yaml $(wildcard all-
 	rm -Rf app/
 	cp -a all-apps app && touch $@
 
-ignition.json: cl.yaml app/.dirstamp
+all-apps/lb/Caddyfile: apps.config make-caddyfile.sh
+	./make-caddyfile.sh > all-apps/lb/Caddyfile
+
+ignition.json: cl.yaml app/.dirstamp all-apps/lb/Caddyfile
 	cat cl.yaml | sudo docker run --rm --volume /home/tjhintz/.ssh/id_rsa.pub:/pwd/ssh-keys --volume ${PWD}:/pwd --workdir /pwd -i quay.io/coreos/butane:latest -d /pwd > ignition.json
 
 plan: ignition.json

all-apps/lb/Caddyfile

@@ -1,17 +0,0 @@
-wg-easy1.nassella.cc {
-  reverse_proxy http://wg-easy:80
-
-  # tls internal
-  # x
-  # log
-}
-
-nextcloud1.nassella.cc {
-  reverse_proxy http://nextcloud:80
-  # tls internal
-}
-
-root.nassella.cc {
-  reverse_proxy http://nginx:80
-  # tls internal
-}

apps.config.tmpl

@@ -0,0 +1,2 @@
+ROOT_DOMAIN=example.com
+APP_CONFIGS="nextcloud,nextcloud wg-easy,wg-easy"

make-caddyfile.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# this script generates the load-balancer
+# config for the Caddy server.
+
+# it depends on apps.config which should define:
+# ROOT_DOMAIN - the root domain for all apps
+# APP_CONFIGS - app-subdomain pairs, configured via a comma, like:
+#   app1,subdomain1 app2,subdomain2 app3,subdomain3
+# full example:
+#   ROOT_DOMAIN=nassella.cc
+#   APP_CONFIGS="app1,subdomain1 app2,subdomain2 app3,subdomain3"
+
+set -e
+
+. apps.config
+
+read -r -a APP_CONFIGS <<< "$APP_CONFIGS"
+APP_CONFIGS+=('lb,root')
+
+
+declare -A bodys
+bodys["nextcloud"]="  reverse_proxy http://nextcloud:80"
+bodys["wg-easy"]="  reverse_proxy http://wg-easy:80"
+bodys["lb"]="  reverse_proxy http://nginx:80"
+
+for config_string in ${APP_CONFIGS[@]}; do
+    IFS=','
+    read -r -a config <<< "$config_string"
+
+    app=${config[0]}
+    subdomain=${config[1]}
+    body=${bodys[$app]}
+    fulldomain="$subdomain.$ROOT_DOMAIN"
+
+    echo "$fulldomain {"
+    echo $body
+    echo "}"
+done
+
+
+