284 lines
8.6 KiB
Python
284 lines
8.6 KiB
Python
"""
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Django settings for llm_be project.
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Environment-driven for local/dev/beta/prod (match company_site / scha).
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"""
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from pathlib import Path
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from datetime import timedelta
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from urllib.parse import urlparse
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import json
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import os
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BASE_DIR = Path(__file__).resolve().parent.parent
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def env(key: str, default: str | None = None) -> str | None:
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return os.environ.get(key, default)
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def env_bool(key: str, default: bool = False) -> bool:
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value = os.environ.get(key)
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if value is None:
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return default
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return value.lower() in {"1", "true", "yes", "on"}
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def env_list(key: str, default: str = "") -> list[str]:
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value = os.environ.get(key, default)
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if not value:
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return []
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value = value.strip()
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if value.startswith("["):
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try:
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parsed = json.loads(value)
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except ValueError:
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parsed = None
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if isinstance(parsed, list):
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return [str(item).strip() for item in parsed if str(item).strip()]
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return [item.strip() for item in value.split(",") if item.strip()]
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def database_config() -> dict:
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database_url = env("DATABASE_URL")
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if database_url:
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parsed = urlparse(database_url)
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return {
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"default": {
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"ENGINE": "django.db.backends.postgresql",
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"NAME": parsed.path.lstrip("/"),
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"USER": parsed.username or "",
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"PASSWORD": parsed.password or "",
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"HOST": parsed.hostname or "",
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"PORT": str(parsed.port or 5432),
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}
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}
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if env("DB_HOST"):
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return {
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"default": {
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"ENGINE": "django.db.backends.postgresql",
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"NAME": env("DB_NAME", "chat_backend"),
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"USER": env("DB_USER", "chat_backend"),
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"PASSWORD": env("DB_PASSWORD", ""),
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"HOST": env("DB_HOST"),
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"PORT": env("DB_PORT", "5432"),
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}
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}
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return {
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"default": {
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"ENGINE": "django.db.backends.sqlite3",
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"NAME": BASE_DIR / "db.sqlite3",
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}
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}
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def build_csrf_trusted_origins(
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allowed_hosts: list[str], explicit: list[str] | None = None
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) -> list[str]:
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if explicit:
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return explicit
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local_hosts = {"localhost", "127.0.0.1", "0.0.0.0"}
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origins: list[str] = []
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for host in allowed_hosts:
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if not host or host == "*" or host.startswith("."):
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continue
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hostname = host.split(":")[0]
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scheme = "http" if hostname in local_hosts else "https"
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origins.append(f"{scheme}://{host}")
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return origins
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DJANGO_ENV = (env("DJANGO_ENV", "dev") or "dev").lower()
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SECRET_KEY = env(
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"DJANGO_SECRET_KEY",
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"django-insecure-dev-only-change-me-before-production",
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)
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DEBUG = env_bool("DJANGO_DEBUG", DJANGO_ENV == "dev")
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allowed_hosts = env_list(
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"DJANGO_ALLOWED_HOSTS",
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"localhost,127.0.0.1,0.0.0.0,chatbackend.aimloperations.com,chat.aimloperations.com",
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)
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ALLOWED_HOSTS = allowed_hosts if allowed_hosts else ["*"]
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CSRF_TRUSTED_ORIGINS = build_csrf_trusted_origins(
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ALLOWED_HOSTS,
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env_list("DJANGO_CSRF_TRUSTED_ORIGINS"),
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)
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CORS_ALLOW_CREDENTIALS = False
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CORS_ORIGIN_ALLOW_ALL = env_bool("CORS_ORIGIN_ALLOW_ALL", True)
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CORS_ALLOWED_ORIGINS = env_list(
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"CORS_ALLOWED_ORIGINS",
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"http://localhost:3000,http://127.0.0.1:3000,https://chat.aimloperations.com",
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)
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# Ollama — GPU host on LAN for deployed envs; loopback for local Ollama.
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# Prod/beta control-node secret should set OLLAMA_BASE_URL=http://10.0.0.128:11434
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OLLAMA_BASE_URL = env("OLLAMA_BASE_URL", "http://127.0.0.1:11434") or "http://127.0.0.1:11434"
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OLLAMA_MODEL = env(
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"OLLAMA_MODEL",
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"llama3.2" if not DEBUG else "gpt-oss:20b",
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) or ("llama3.2" if not DEBUG else "gpt-oss:20b")
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OLLAMA_EMBED_MODEL = env("OLLAMA_EMBED_MODEL", OLLAMA_MODEL) or OLLAMA_MODEL
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CHROMA_PERSIST_DIRECTORY = env(
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"CHROMA_PERSIST_DIRECTORY",
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str(BASE_DIR / "chroma_db"),
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) or str(BASE_DIR / "chroma_db")
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INSTALLED_APPS = [
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"daphne",
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"django.contrib.admin",
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"django.contrib.auth",
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"django.contrib.contenttypes",
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"django.contrib.sessions",
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"django.contrib.messages",
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"whitenoise.runserver_nostatic",
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"django.contrib.staticfiles",
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"chat_backend",
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"rest_framework",
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"corsheaders",
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"rest_framework_simplejwt.token_blacklist",
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]
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MIDDLEWARE = [
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"django.middleware.security.SecurityMiddleware",
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"whitenoise.middleware.WhiteNoiseMiddleware",
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"django.contrib.sessions.middleware.SessionMiddleware",
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"corsheaders.middleware.CorsMiddleware",
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"django.middleware.common.CommonMiddleware",
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"django.middleware.csrf.CsrfViewMiddleware",
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"django.contrib.auth.middleware.AuthenticationMiddleware",
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"django.contrib.messages.middleware.MessageMiddleware",
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"django.middleware.clickjacking.XFrameOptionsMiddleware",
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]
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ROOT_URLCONF = "llm_be.urls"
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TEMPLATES = [
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{
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"BACKEND": "django.template.backends.django.DjangoTemplates",
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"DIRS": [os.path.join(BASE_DIR, "templates")],
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"APP_DIRS": True,
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"OPTIONS": {
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"context_processors": [
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"django.template.context_processors.debug",
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"django.template.context_processors.request",
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"django.contrib.auth.context_processors.auth",
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"django.contrib.messages.context_processors.messages",
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],
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},
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},
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]
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WSGI_APPLICATION = "llm_be.wsgi.application"
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ASGI_APPLICATION = "llm_be.asgi.application"
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DATABASES = database_config()
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AUTH_PASSWORD_VALIDATORS = [
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{
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"NAME": "django.contrib.auth.password_validation.UserAttributeSimilarityValidator",
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},
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{
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"NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
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},
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{
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"NAME": "django.contrib.auth.password_validation.CommonPasswordValidator",
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},
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{
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"NAME": "django.contrib.auth.password_validation.NumericPasswordValidator",
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},
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]
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LANGUAGE_CODE = "en-us"
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TIME_ZONE = "UTC"
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USE_I18N = True
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USE_L10N = True
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USE_TZ = True
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STATIC_URL = "/static/"
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STATIC_ROOT = BASE_DIR / "staticfiles"
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MEDIA_URL = "/media/"
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MEDIA_ROOT = BASE_DIR / "media"
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STORAGES = {
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"default": {
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"BACKEND": "chat_backend.storage.DatabaseStorage",
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},
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"staticfiles": {
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"BACKEND": "whitenoise.storage.CompressedManifestStaticFilesStorage",
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},
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}
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DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
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AUTH_USER_MODEL = "chat_backend.CustomUser"
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REST_FRAMEWORK = {
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"DEFAULT_PERMISSION_CLASSES": ("rest_framework.permissions.IsAuthenticated",),
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"DEFAULT_AUTHENTICATION_CLASSES": (
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"rest_framework_simplejwt.authentication.JWTAuthentication",
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),
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}
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SIMPLE_JWT = {
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"ACCESS_TOKEN_LIFETIME": timedelta(hours=5),
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"REFRESH_TOKEN_LIFETIME": timedelta(days=14),
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"ROTATE_REFRESH_TOKENS": True,
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"BLACKLIST_AFTER_ROTATION": True,
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"ALGORITHM": "HS256",
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"SIGNING_KEY": SECRET_KEY,
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"VERIFYING_KEY": None,
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"AUTH_HEADER_TYPES": ("JWT",),
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"USER_ID_FIELD": "id",
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"USER_ID_CLAIM": "user_id",
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"AUTH_TOKEN_CLASSES": ("rest_framework_simplejwt.tokens.AccessToken",),
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"TOKEN_TYPE_CLAIM": "token_type",
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}
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CHANNEL_LAYERS = {
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"default": {
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"BACKEND": "channels.layers.InMemoryChannelLayer",
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},
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}
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EMAIL_HOST = env("EMAIL_HOST", "mail.smtp2go.com") or "mail.smtp2go.com"
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EMAIL_HOST_USER = env("EMAIL_HOST_USER", "") or ""
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EMAIL_HOST_PASSWORD = env("EMAIL_HOST_PASSWORD", "") or ""
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EMAIL_PORT = int(env("EMAIL_PORT", "2525") or "2525")
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EMAIL_USE_TLS = env_bool("EMAIL_USE_TLS", True)
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CAPTCHA_SECRET_KEY = env("CAPTCHA_SECRET_KEY", "") or ""
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USE_TLS_PROXY = env_bool("USE_TLS_PROXY", DJANGO_ENV in {"prod", "beta"})
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if USE_TLS_PROXY:
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SECURE_PROXY_SSL_HEADER = ("HTTP_X_FORWARDED_PROTO", "https")
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directory_path = env("DJANGO_LOG_DIR", str(BASE_DIR / "logs")) or str(BASE_DIR / "logs")
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os.makedirs(directory_path, exist_ok=True)
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ALLOW_IMAGE_GENERATION = env_bool("ALLOW_IMAGE_GENERATION", False)
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ALLOW_INTERNET_ACCESS = env_bool("ALLOW_INTERNET_ACCESS", True)
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if DJANGO_ENV in {"prod", "beta"}:
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# Compose treats $ in .env as variable expansion — escape each $ as $$.
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if not SECRET_KEY:
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raise ValueError(
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"DJANGO_SECRET_KEY is empty in prod/beta. Set it in the control-node "
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"secret (~/Documents/secrets/chat_backend/chat_backend_<env>.env). "
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"If the value contains $, write $$ or Compose will strip/empty it."
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)
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if SECRET_KEY.startswith("django-insecure") or "dev-only" in SECRET_KEY:
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raise ValueError(
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"DJANGO_SECRET_KEY still looks like a placeholder "
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"(starts with 'django-insecure' or contains 'dev-only'). "
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"Replace it with a real random secret and redeploy."
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)
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