prepare docker setup for http remote backend

docker/ddns/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.7
+FROM golang:1.9
 
 WORKDIR /go/src/github.com/pboehm/ddns
 COPY . .
@@ -6,4 +6,6 @@ COPY . .
 RUN go-wrapper download   # "go get -d -v ./..."
 RUN go-wrapper install    # "go install -v ."
 
-CMD ["/bin/true"]
+ENV GIN_MODE release
+
+CMD /go/bin/ddns --domain=${DDNS_DOMAIN} --soa_fqdn=${DDNS_SOA_DOMAIN} --redis=redis:6379 web

docker/docker-compose.yml

@@ -1,42 +1,27 @@
 version: '2'
 
-volumes:
-  ddns:
-
 services:
   ddns:
+    restart: unless-stopped
     build:
       context: ..
       dockerfile: docker/ddns/Dockerfile
-    volumes:
-      - ddns:/go/bin/
-
-  ddns-web:
-    restart: unless-stopped
-    build:
-      context: web/
-      dockerfile: Dockerfile
     depends_on:
       - redis
-    volumes_from:
-      - ddns
     environment:
       DDNS_DOMAIN: d.example.net
+      DDNS_SOA_DOMAIN: soa.example.net
 
-  ddns-powerdns:
+  powerdns:
     restart: unless-stopped
     build:
       context: powerdns/
       dockerfile: Dockerfile
     depends_on:
-      - redis
-    volumes_from:
       - ddns
     environment:
-      DDNS_DOMAIN: d.example.net
-      DDNS_SOA_DOMAIN: soa.example.net
-      DDNS_VERBOSE: --verbose
+      PDNS_REMOTE_HTTP_HOST: "ddns:8080"
 
   redis:
     restart: unless-stopped
-    image: redis:latest
+    image: redis:4-alpine

docker/powerdns/Dockerfile

@@ -2,11 +2,11 @@ FROM buildpack-deps:jessie-scm
 MAINTAINER Philipp Böhm <philipp@pboehm.org>
 
 # the setup procedure according to https://repo.powerdns.com/ (Debian 8 Jessie)
-RUN echo "deb http://repo.powerdns.com/debian jessie-auth-40 main" > /etc/apt/sources.list.d/pdns.list \
+RUN echo "deb http://repo.powerdns.com/debian jessie-auth-41 main" > /etc/apt/sources.list.d/pdns.list \
 	&& echo "Package: pdns-*\nPin: origin repo.powerdns.com\nPin-Priority: 600\n" >> /etc/apt/preferences.d/pdns \
 	&& curl https://repo.powerdns.com/FD380FBB-pub.asc | apt-key add - \
 	&& apt-get -y update \
-	&& apt-get install -y pdns-server pdns-backend-pipe \
+	&& apt-get install -y pdns-server pdns-backend-remote \
 	&& rm -rf /var/lib/apt/lists/*
 
 COPY pdns.conf /etc/powerdns/pdns.conf

docker/powerdns/entrypoint.sh

@@ -2,8 +2,6 @@
 
 CONFIG_FILE=/etc/powerdns/pdns.conf
 
-sed -i 's/{{DDNS_DOMAIN}}/'"${DDNS_DOMAIN}"'/g' ${CONFIG_FILE}
-sed -i 's/{{DDNS_SOA_DOMAIN}}/'"${DDNS_SOA_DOMAIN}"'/g' ${CONFIG_FILE}
-sed -i 's/{{DDNS_VERBOSE}}/'"${DDNS_VERBOSE}"'/g' ${CONFIG_FILE}
+sed -i 's/{{PDNS_REMOTE_HTTP_HOST}}/'"${PDNS_REMOTE_HTTP_HOST}"'/g' ${CONFIG_FILE}
 
 exec "$@"

docker/powerdns/pdns.conf

@@ -3,7 +3,6 @@ cache-ttl=0
 loglevel=7
 log-dns-details=yes
 disable-axfr=yes
-pipe-abi-version=1
 
-launch=pipe
-pipe-command=/go/bin/ddns --domain={{DDNS_DOMAIN}} --soa_fqdn={{DDNS_SOA_DOMAIN}} --redis=redis:6379 {{DDNS_VERBOSE}} backend
+launch=remote
+remote-connection-string=http:url=http://{{PDNS_REMOTE_HTTP_HOST}}/dnsapi

docker/web/Dockerfile

@@ -1,6 +0,0 @@
-FROM buildpack-deps:jessie-scm
-MAINTAINER Philipp Böhm <philipp@pboehm.org>
-
-ENV GIN_MODE release
-
-CMD /go/bin/ddns --domain=${DDNS_DOMAIN} --redis=redis:6379 web

web/template.go

@@ -168,7 +168,7 @@ const indexTemplate string = `
             function validate() {
                 var hostname = $('#hostname').val();
 
-                $.getJSON("/available/" + hostname + "/", function( data ) {
+                $.getJSON("/available/" + hostname, function( data ) {
                     if (data.available) {
                         isValid();
                     } else {
@@ -188,7 +188,7 @@ const indexTemplate string = `
                 $('#register').click(function() {
                     var hostname = $("#hostname").val();
 
-                    $.getJSON("/new/" + hostname + "/", function( data ) {
+                    $.getJSON("/new/" + hostname, function( data ) {
                         console.log(data);
 
                         var host = location.protocol + '//' + location.host;