Fix typing failures

rctab/crud/schema.py

@@ -24,7 +24,7 @@ class UserRBAC(BaseModel):
     """The access that a user has to RCTab."""
 
     oid: UUID
-    username: Optional[str]
+    username: Optional[str] = None
     has_access: bool
     is_admin: bool
 
@@ -34,52 +34,52 @@ class Usage(HashBaseModel):
 
     # See https://docs.microsoft.com/en-us/rest/api/consumption/usage-details/list#legacyusagedetail
     id: str
-    name: Optional[str]
-    type: Optional[str]
-    tags: Optional[Dict[str, str]]
-    billing_account_id: Optional[str]
-    billing_account_name: Optional[str]
-    billing_period_start_date: Optional[datetime.date]
-    billing_period_end_date: Optional[datetime.date]
-    billing_profile_id: Optional[str]
-    billing_profile_name: Optional[str]
-    account_owner_id: Optional[str]
-    account_name: Optional[str]
+    name: Optional[str] = None
+    type: Optional[str] = None
+    tags: Optional[Dict[str, str]] = None
+    billing_account_id: Optional[str] = None
+    billing_account_name: Optional[str] = None
+    billing_period_start_date: Optional[datetime.date] = None
+    billing_period_end_date: Optional[datetime.date] = None
+    billing_profile_id: Optional[str] = None
+    billing_profile_name: Optional[str] = None
+    account_owner_id: Optional[str] = None
+    account_name: Optional[str] = None
     subscription_id: UUID
-    subscription_name: Optional[str]
+    subscription_name: Optional[str] = None
     date: datetime.date
-    product: Optional[str]
-    part_number: Optional[str]
-    meter_id: Optional[str]
-    quantity: Optional[float]
-    effective_price: Optional[float]
-    cost: Optional[float]
-    amortised_cost: Optional[float]
+    product: Optional[str] = None
+    part_number: Optional[str] = None
+    meter_id: Optional[str] = None
+    quantity: Optional[float] = None
+    effective_price: Optional[float] = None
+    cost: Optional[float] = None
+    amortised_cost: Optional[float] = None
     total_cost: float
-    unit_price: Optional[float]
-    billing_currency: Optional[str]
-    resource_location: Optional[str]
-    consumed_service: Optional[str]
-    resource_id: Optional[str]
-    resource_name: Optional[str]
-    service_info1: Optional[str]
-    service_info2: Optional[str]
-    additional_info: Optional[str]
-    invoice_section: Optional[str]
-    cost_center: Optional[str]
-    resource_group: Optional[str]
-    reservation_id: Optional[str]
-    reservation_name: Optional[str]
-    product_order_id: Optional[str]
-    offer_id: Optional[str]
-    is_azure_credit_eligible: Optional[bool]
-    term: Optional[str]
-    publisher_name: Optional[str]
-    publisher_type: Optional[str]
-    plan_name: Optional[str]
-    charge_type: Optional[str]
-    frequency: Optional[str]
-    monthly_upload: Optional[datetime.date]
+    unit_price: Optional[float] = None
+    billing_currency: Optional[str] = None
+    resource_location: Optional[str] = None
+    consumed_service: Optional[str] = None
+    resource_id: Optional[str] = None
+    resource_name: Optional[str] = None
+    service_info1: Optional[str] = None
+    service_info2: Optional[str] = None
+    additional_info: Optional[str] = None
+    invoice_section: Optional[str] = None
+    cost_center: Optional[str] = None
+    resource_group: Optional[str] = None
+    reservation_id: Optional[str] = None
+    reservation_name: Optional[str] = None
+    product_order_id: Optional[str] = None
+    offer_id: Optional[str] = None
+    is_azure_credit_eligible: Optional[bool] = None
+    term: Optional[str] = None
+    publisher_name: Optional[str] = None
+    publisher_type: Optional[str] = None
+    plan_name: Optional[str] = None
+    charge_type: Optional[str] = None
+    frequency: Optional[str] = None
+    monthly_upload: Optional[datetime.date] = None
 
 
 class AllUsage(BaseModel):
@@ -92,7 +92,7 @@ class CMUsage(HashBaseModel):
     """A usage object from the Azure cost management API."""
 
     subscription_id: UUID
-    name: Optional[str]
+    name: Optional[str] = None
     start_datetime: datetime.date
     end_datetime: datetime.date
     cost: confloat(ge=0.0)  # type: ignore
@@ -112,8 +112,8 @@ class RoleAssignment(HashBaseModel):
     role_name: str
     principal_id: str
     display_name: str
-    mail: Optional[str]
-    scope: Optional[str]
+    mail: Optional[str] = None
+    scope: Optional[str] = None
 
 
 class SubscriptionState(str, Enum):

rctab/settings.py

@@ -4,9 +4,8 @@
 from typing import Any, List, Optional
 from uuid import UUID
 
-from pydantic import HttpUrl, PostgresDsn, field_validator, model_validator
+from pydantic import PostgresDsn, field_validator, model_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
-from typing_extensions import Self
 
 
 class Settings(BaseSettings):
@@ -60,8 +59,12 @@ class Settings(BaseSettings):
     # Settings for the settings class itself.
     model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8")
 
+    # Note that mode="before" means that we get (and return)
+    # a dict and not a Settings object.
     @model_validator(mode="before")
-    def validate_postgres_dsn(self) -> Self:
+    def validate_postgres_dsn(  # type: ignore
+        self: dict[str, Any],
+    ) -> dict[str, Any]:
         """Build a DSN string from the host, db name, port, username and password."""
         # We want to build the Data Source Name ourselves so none should be provided
         if self.get("postgres_dsn") is not None: