Pydantic avro schema storage

src/sasquatchbackpack/schemas/__init__.py

@@ -0,0 +1 @@
+"""Avro schemas."""

src/sasquatchbackpack/schemas/usgs.py

@@ -0,0 +1,17 @@
+"""USGS Schemas."""
+
+from dataclasses import dataclass, field
+
+from dataclasses_avroschema import AvroModel
+
+
+@dataclass
+class EarthquakeSchema(AvroModel):
+    """USGS Earthquake schema."""
+
+    timestamp: int
+    id: str = field(metadata={"description": "unique earthquake id"})
+    latitude: float = field(metadata={"units": "degree"})
+    longitude: float = field(metadata={"units": "degree"})
+    depth: float = field(metadata={"units": "km"})
+    magnitude: float = field(metadata={"units": "u.richter_magnitudes"})