Add config.py

config.py

@@ -0,0 +1,52 @@
+"""Configuration for the billing API, loaded from environment / .env file."""
+from functools import lru_cache
+
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    # OpenStack endpoints
+    keystone_auth_url: str = "https://internal.3engine.rootxwire.com:5000"
+    cloudkitty_url: str = "https://internal.3engine.rootxwire.com:8889"
+
+    # Keystone credentials (needs visibility over all projects' rating data,
+    # i.e. admin or a reader role on the service project)
+    os_username: str = "admin"
+    os_password: str = ""
+    os_project_name: str = "admin"
+    os_user_domain: str = "Default"
+    os_project_domain: str = "Default"
+
+    # Cluster uses self-signed certs on internal endpoints
+    verify_ssl: bool = False
+
+    # CloudKitty stores period boundaries in the cluster-local tz (+05:30)
+    billing_tz: str = "Asia/Kolkata"
+
+    http_timeout: float = 30.0
+    # Cache the Keystone token this long (tokens are valid ~1h by default)
+    token_ttl_seconds: int = 2700
+
+    # Optional endpoint overrides. Empty = use the Keystone catalog's
+    # public URLs (correct when running outside the cluster network).
+    nova_url: str = ""
+    cinder_url: str = ""
+    neutron_url: str = ""
+
+    # SMTP for emailing tenant reports. Leave smtp_host empty to disable;
+    # the /send endpoint then returns the report for manual sharing instead.
+    smtp_host: str = ""
+    smtp_port: int = 587
+    smtp_user: str = ""
+    smtp_password: str = ""
+    smtp_from: str = "billing@connectvm.com"
+    smtp_tls: bool = True
+
+    class Config:
+        env_file = ".env"
+        env_prefix = "BILLING_"
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()