UPDATE

device_hub/models.py

@@ -0,0 +1,67 @@
+import uuid as uuid_lib
+
+from django.db import models
+
+
+class SensorCatalog(models.Model):
+    uuid = models.UUIDField(default=uuid_lib.uuid4, unique=True, editable=False, db_index=True)
+    code = models.CharField(max_length=255, unique=True, db_index=True)
+    name = models.CharField(max_length=255, unique=True, db_index=True)
+    description = models.TextField(blank=True, default="")
+    customizable_fields = models.JSONField(default=list, blank=True)
+    supported_power_sources = models.JSONField(default=list, blank=True)
+    returned_data_fields = models.JSONField(default=list, blank=True)
+    sample_payload = models.JSONField(default=dict, blank=True)
+    is_active = models.BooleanField(default=True)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        db_table = "sensor_catalogs"
+        ordering = ["code"]
+
+    def __str__(self):
+        return self.name
+
+
+class FarmSensor(models.Model):
+    uuid = models.UUIDField(default=uuid_lib.uuid4, unique=True, editable=False, db_index=True)
+    farm = models.ForeignKey("farm_hub.FarmHub", on_delete=models.CASCADE, related_name="sensors")
+    sensor_catalog = models.ForeignKey(
+        SensorCatalog,
+        on_delete=models.PROTECT,
+        related_name="farm_sensors",
+        null=True,
+        blank=True,
+    )
+    physical_device_uuid = models.UUIDField(default=uuid_lib.uuid4, unique=True, db_index=True)
+    name = models.CharField(max_length=255)
+    sensor_type = models.CharField(max_length=255, blank=True, default="")
+    is_active = models.BooleanField(default=True)
+    specifications = models.JSONField(default=dict, blank=True)
+    power_source = models.JSONField(default=dict, blank=True)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    class Meta:
+        db_table = "farm_sensors"
+        ordering = ["-created_at"]
+
+    def __str__(self):
+        return f"{self.name} ({self.uuid})"
+
+
+class SensorExternalRequestLog(models.Model):
+    farm_uuid = models.UUIDField(db_index=True)
+    sensor_catalog_uuid = models.UUIDField(null=True, blank=True, db_index=True)
+    physical_device_uuid = models.UUIDField(db_index=True)
+    payload = models.JSONField(default=dict, blank=True)
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        db_table = "sensor_external_request_logs"
+        ordering = ["-created_at", "-id"]
+
+    def __str__(self):
+        return f"{self.physical_device_uuid}:{self.created_at.isoformat()}"
+