From 52831532ecff8ad5e6036889da8a68386642a87f Mon Sep 17 00:00:00 2001
From: Cristhian Garcia <crisgarta8@gmail.com>
Date: Wed, 29 May 2024 11:35:25 -0500
Subject: [PATCH] feat: add support for static cache config

---
 drydock/patches/kustomization-resources       |  1 +
 drydock/patches/static-cache-config           |  7 +++++
 drydock/plugin.py                             | 17 ++++++++++++
 .../drydock/k8s/ingress/static-cache.yml      | 26 +++++++++++++++++++
 4 files changed, 51 insertions(+)
 create mode 100644 drydock/patches/static-cache-config
 create mode 100644 drydock/templates/drydock/k8s/ingress/static-cache.yml

diff --git a/drydock/patches/kustomization-resources b/drydock/patches/kustomization-resources
index de1ffcf1..eb2069cf 100644
--- a/drydock/patches/kustomization-resources
+++ b/drydock/patches/kustomization-resources
@@ -12,6 +12,7 @@
 - plugins/drydock/k8s/ingress/cms.yml
 - plugins/drydock/k8s/ingress/mfe.yml
 - plugins/drydock/k8s/ingress/extra-hosts.yml
+{% if DRYDOCK_NGINX_STATIC_CACHE_CONFIG %}- plugins/drydock/k8s/ingress/static-cache.yml{%- endif %}
 {%- endif %}
 {% if DRYDOCK_DEBUG -%}
 - plugins/drydock/k8s/debug/deployments.yml
diff --git a/drydock/patches/static-cache-config b/drydock/patches/static-cache-config
new file mode 100644
index 00000000..2f2b7fd9
--- /dev/null
+++ b/drydock/patches/static-cache-config
@@ -0,0 +1,7 @@
+# Cache settings
+proxy_cache_valid 404 10m;
+proxy_cache_use_stale error timeout updating http_404 http_500 http_502 http_503 http_504;
+proxy_cache static-cache;
+proxy_cache_valid any 120m;
+proxy_cache_bypass $http_x_purge;
+add_header X-Cache-Status $upstream_cache_status;
diff --git a/drydock/plugin.py b/drydock/plugin.py
index 3fb468f3..d9dad1bb 100644
--- a/drydock/plugin.py
+++ b/drydock/plugin.py
@@ -162,6 +162,23 @@ def get_sync_waves_for_resource(resource_name: str) -> SYNC_WAVES_ORDER_ATTRS_TY
             "lms-worker",
             "cms-worker",
         ],
+        "NGINX_STATIC_CACHE_CONFIG": {
+            "lms": {
+                "host": "{{ LMS_HOST }}",
+                "path": "/static/",
+                "port": 8000,
+            },
+            "cms": {
+                "host": "{{ CMS_HOST }}",
+                "path": "/static/",
+                "port": 8000,
+            },
+            "mfe": {
+                "host": "{{ MFE_HOST }}",
+                "path": "/static/",
+                "port": 8002,
+            },
+        },
     },
     # Add here settings that don't have a reasonable default for all users. For
     # instance: passwords, secret keys, etc.
diff --git a/drydock/templates/drydock/k8s/ingress/static-cache.yml b/drydock/templates/drydock/k8s/ingress/static-cache.yml
new file mode 100644
index 00000000..617ce536
--- /dev/null
+++ b/drydock/templates/drydock/k8s/ingress/static-cache.yml
@@ -0,0 +1,26 @@
+{%- for service, config in DRYDOCK_NGINX_STATIC_CACHE_CONFIG.items() %}
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: ingress-static-{{ service }}
+  namespace: {{ K8S_NAMESPACE }}
+  annotations:
+    nginx.ingress.kubernetes.io/proxy-body-size: 8m
+    nginx.ingress.kubernetes.io/proxy-buffering: "on"
+    nginx.ingress.kubernetes.io/configuration-snippet: |
+      {{ patch("static-cache-config") | indent(6)}}
+spec:
+  ingressClassName: nginx
+  rules:
+  - host: {{ config["host"] }}
+    http:
+      paths:
+        - pathType: Prefix
+          path: {{ config["path"]}}
+          backend:
+            service:
+              name: {% if DRYDOCK_BYPASS_CADDY -%}{% else -%}caddy{% endif %}
+            port:
+              number: {% if DRYDOCK_BYPASS_CADDY -%}{{ config["port"] }}{% else -%}80{% endif %}
+{%- endfor %}