Functioning mqtt ingestion and db write, formating changes, device manager initiated

services/device_manager/models.py

@@ -0,0 +1,38 @@
+import datetime
+
+from pydantic import BaseModel
+
+
+class Device(BaseModel):
+    """IoT devices registered in the system."""
+
+    id: str
+    name: str
+    location: str | None = None
+    is_active: bool = True
+    created_at: datetime.datetime
+
+class DeviceCertificate(BaseModel):
+    """X.509 certificates issued to devices for mTLS authentication."""
+
+    device_id: str
+    certificate_pem: str
+    private_key_pem: str | None = None
+    issued_at: datetime.datetime
+    expires_at: datetime.datetime
+    revoked_at: datetime.datetime | None = None
+
+class DeviceRegistrationRequest(BaseModel):
+    """Request model for registering a new device."""
+
+    name: str
+    location: str | None = None
+
+class DeviceRegistrationResponse(BaseModel):
+    """Response model after registering a new device."""
+
+    device_id: str
+    ca_certificate_pem: str
+    certificate_pem: str
+    private_key_pem: str
+    expires_at: datetime.datetime