[#61] Add Redis/Celery service in Render (#64)

* feat: add celery/redis render service [#61]

* fix: add condition for redis [#61]

* chore: lint [#61]

* chore: moar lint [#61]

* meh

* chore: more new line [#61]

Author: nickatnight

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2024 Nick Kelly
+Copyright (c) 2025 Nick Kelly
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cookiecutter-fastapi-backend"
-version = "1.1.0"
+version = "1.2.0"
 description = "Cookiecutter template to build and deploy fastapi backends..batteries included"
 authors = ["nickatnight <nialexanderke@proton.me>"]
 readme = "README.md"

{{ cookiecutter.project_slug }}/.env_example

@@ -16,4 +16,5 @@ POSTGRES_URL=
 # Redis
 REDIS_HOST=redis
 REDIS_PORT=6379
+REDIS_URL=
 {%- endif %}

{{ cookiecutter.project_slug }}/render.yaml

@@ -26,7 +26,43 @@ services:
         fromDatabase:
           name: {{ cookiecutter.project_slug_db }}db
           property: connectionString
+{%- if cookiecutter.use_celery == "yes" %}
+      - key: REDIS_URL
+        fromService:
+          name: celery-redis
+          type: redis
+          property: connectionString
+
+  - type: worker
+    name: celery-worker
+    runtime: docker
+    plan: free
+    autoDeployTrigger: checksPass
+    dockerCommand: celery --app=src worker --loglevel=info --concurrency=4
+    dockerfilePath: ./{{ cookiecutter.backend_container_name }}/Dockerfile
+    dockerContext: ./{{ cookiecutter.backend_container_name }}
+
+    envVars:
+      - key: PORT
+        value: '10000'
+      - key: POETRY_VERSION
+        value: '1.8.5'
+      - key: POSTGRES_URL
+        fromDatabase:
+          name: {{ cookiecutter.project_slug_db }}db
+          property: connectionString
+      - key: REDIS_URL
+        fromService:
+          name: celery-redis
+          type: redis
+          property: connectionString
 
+  - type: redis
+    name: celery-redis
+    plan: free # free plans will not persist data
+    maxmemoryPolicy: noeviction # recommended policy for queues
+    ipAllowList: [] # only allow internal connections
+{%- endif %}
 databases:
   - name: {{ cookiecutter.project_slug_db }}db
     plan: free

{{ cookiecutter.project_slug }}/{{ cookiecutter.backend_container_name }}/src/api/deps.py

@@ -4,7 +4,7 @@
 
 
 def get_redis_url() -> str:
-    return f"redis://{settings.REDIS_HOST}:{settings.REDIS_PORT}"
+    return settings.REDIS_URL or ""
 
 
 def get_redis_client() -> Redis:

{{ cookiecutter.project_slug }}/{{ cookiecutter.backend_container_name }}/src/core/config.py

@@ -25,6 +25,7 @@ class Settings(BaseSettings):
     {%- if cookiecutter.use_celery == "yes" %}
     REDIS_HOST: str = Field(default="")
     REDIS_PORT: str = Field(default="")
+    REDIS_URL: Optional[str] = None
     {%- endif %}
     DB_POOL_SIZE: int = Field(default=83)
     WEB_CONCURRENCY: int = Field(default=9)
@@ -52,6 +53,16 @@ def build_db_connection(cls, v: Optional[str], values: ValidationInfo) -> Any:
             host=values.data.get("POSTGRES_HOST"),
             path=f"{values.data.get('POSTGRES_DB') or ''}",
         ).unicode_string()
+    {%- if cookiecutter.use_celery == "yes" %}
+
+    @field_validator("REDIS_URL", mode="before")
+    @classmethod
+    def build_redis_connection(cls, v: Optional[str], values: ValidationInfo) -> Any:
+        if isinstance(v, str) and len(v) > 0:
+            return v
+
+        return f"redis://{values.data.get('REDIS_HOST')}:{values.data.get('REDIS_PORT')}"
+    {%- endif %}
 
 
 settings = Settings()