Add nginx service that provides a frontend to all the other services

This allows us to run all the different services and expose all their metrics,
all on one port.

build

@@ -8,7 +8,7 @@ set -eu
 # Pass PUSH=true to also push the resulting images, or PUSH=latest to push them as :latest tag
 
 # The different images we can build
-COMPONENTS=(downloader restreamer backfiller thrimshim cutter sheetsync)
+COMPONENTS=(downloader restreamer backfiller thrimshim cutter sheetsync nginx)
 
 # Define push if not already defined
 PUSH=${PUSH:-}

docker-compose.jsonnet

@@ -19,6 +19,7 @@
     cutter: false,
     sheetsync: false,
     thrimshim: false,
+    nginx: true,
   },
 
   // Twitch channel to capture
@@ -34,12 +35,13 @@
   // The host's port to expose each service on.
   // Only the restreamer needs to be externally accessible - the others are just for monitoring.
   ports:: {
-    restreamer: 8080,
-    thrimshim: 8081,
+    restreamer: 8000,
+    thrimshim: 8004,
     downloader: 8001,
     backfiller: 8002,
     cutter: 8003,
     sheetsync: 8005,
+    nginx: 80,
   },
 
   // The local port within each container to bind the backdoor server on.
@@ -199,6 +201,12 @@
       [if "sheetsync" in $.ports then "ports"]: ["%s:8005" % $.ports.sheetsync]
     },
 
+    [if $.enabled.nginx then "nginx"]: {
+      image: "quay.io/ekimekim/wubloader-nginx:%s" % image_tag,
+      restart: "on-failure",
+      [if "nginx" in $.ports then "ports"]: ["%s:80" % $.ports.nginx],
+    },
+
   },
 
 }

nginx/Dockerfile

@@ -0,0 +1,3 @@
+# nginx container contains config that exposes all the various services metrics
+FROM nginx:latest
+ADD nginx/nginx.conf /etc/nginx/nginx.conf

nginx/nginx.conf

@@ -0,0 +1,37 @@
+
+worker_processes 1;
+
+events {
+	worker_connections 1024;
+}
+
+http {
+	server {
+		listen 80;
+		location / {
+			proxy_pass http://restreamer:8000;
+		}
+		location /thrimshim {
+			proxy_pass http://thrimshim:8004;
+		}
+		# Restreamer metrics would be available regardless, this is just for consistency
+		location /metrics/restreamer {
+			proxy_pass http://restreamer:8000/metrics;
+		}
+		location /metrics/downloader {
+			proxy_pass http://downloader:8001/metrics;
+		}
+		location /metrics/backfiller {
+			proxy_pass http://backfiller:8002/metrics;
+		}
+		location /metrics/cutter {
+			proxy_pass http://cutter:8003/metrics;
+		}
+		location /metrics/thrimshim {
+			proxy_pass http://thrimshim:8004/metrics;
+		}
+		location /metrics/sheetsync {
+			proxy_pass http://sheetsync:8005/metrics;
+		}
+	}
+}