From c5fd144ff06928939b227d6c838370f01ea9cb3c Mon Sep 17 00:00:00 2001
From: 3wc <3wc@doesthisthing.work>
Date: Sun, 31 Mar 2024 23:48:53 -0300
Subject: [PATCH] Error pages

Re coop-cloud/organising#115
---
 abra.sh                |  4 ++--
 compose.errors.yml     | 29 +++++++++++++++++++++++++++++
 file-provider.yml.tmpl | 15 ++++++++++++++-
 traefik.yml.tmpl       |  7 +++++++
 4 files changed, 52 insertions(+), 3 deletions(-)
 create mode 100644 compose.errors.yml

diff --git a/abra.sh b/abra.sh
index 550ac6b..aca7209 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1,3 +1,3 @@
-export TRAEFIK_YML_VERSION=v19
-export FILE_PROVIDER_YML_VERSION=v9
+export TRAEFIK_YML_VERSION=v20
+export FILE_PROVIDER_YML_VERSION=v10
 export ENTRYPOINT_VERSION=v2
diff --git a/compose.errors.yml b/compose.errors.yml
new file mode 100644
index 0000000..c8e285b
--- /dev/null
+++ b/compose.errors.yml
@@ -0,0 +1,29 @@
+---
+version: "3.8"
+
+services:
+  app:
+    environment:
+      - "CUSTOM_ERRORS=1"
+    volumes:
+      - "traefik-plugins:/plugins-local/"
+  errors:
+    image: "tarampampam/error-pages:2.27.0"
+    networks:
+      - proxy
+    deploy:
+      labels:
+          - "traefik.enable=true"
+          # use as "fallback" for any non-registered services (with priority below normal)
+          - "traefik.http.routers.${STACK_NAME}-error.rule=HostRegexp(`{host:.+}`)"
+          - "traefik.http.routers.${STACK_NAME}-error.priority=10"
+          - "traefik.http.routers.${STACK_NAME}-error.entrypoints=web-secure"
+          - "traefik.http.routers.${STACK_NAME}-error.tls.certresolver=${LETS_ENCRYPT_ENV}"
+          - "traefik.http.services.${STACK_NAME}-error.loadbalancer.server.port=8080"
+          # "errors" middleware settings
+          - "traefik.http.middlewares.${STACK_NAME}-error.errors.status=400-599"
+          - "traefik.http.middlewares.${STACK_NAME}-error.errors.service=${STACK_NAME}-error"
+          - "traefik.http.middlewares.${STACK_NAME}-error.errors.query=/{status}.html"
+
+volumes:
+  traefik-plugins:
diff --git a/file-provider.yml.tmpl b/file-provider.yml.tmpl
index aa827bd..7cb8300 100644
--- a/file-provider.yml.tmpl
+++ b/file-provider.yml.tmpl
@@ -1,6 +1,19 @@
 ---
+
 http:
   middlewares:
+    {{ if eq (env "CUSTOM_ERRORS") "1" }}
+    error:
+      plugin:
+        traefik-error-page:
+          debug: "true"
+          contentsOnly: "false"
+          contentsOnlyMatch: "Bad Gateway"
+          query: /{status}.html
+          service: http://{{ env "STACK_NAME" }}_errors:8080
+          status:
+            - 502
+    {{ end }}
     {{ if eq (env "KEYCLOAK_MIDDLEWARE_ENABLED") "1" }}
     keycloak:
       forwardAuth:
@@ -48,4 +61,4 @@ tls:
   certificates:
     - certFile: /run/secrets/ssl_cert
       keyFile: /run/secrets/ssl_key
-  {{ end }}
\ No newline at end of file
+  {{ end }}
diff --git a/traefik.yml.tmpl b/traefik.yml.tmpl
index 3f6aeab..a7d4791 100644
--- a/traefik.yml.tmpl
+++ b/traefik.yml.tmpl
@@ -115,3 +115,10 @@ certificatesResolvers:
           - "1.1.1.1:53"
           - "9.9.9.9:53"
       {{ end }}
+
+{{ if eq (env "CUSTOM_ERRORS") "1" }}
+experimental:
+  localplugins:
+    traefik-error-page:
+      moduleName: "github.com/3-w-c/traefik-error-page"
+{{ end }}