Refactor of caching & data storage part 6 #118

staticdataproviders/static_data_provider.py

@@ -0,0 +1,31 @@
+import logging
+from datetime import datetime
+
+import pytz
+
+from core.data_store import DATA_STORE
+
+
+class StaticDataProvider:
+    """Generic static reference data provider class. Subclasses of this query the individual URLs or files for data."""
+
+    def __init__(self, name, provider_config):
+        """Constructor"""
+
+        self.name = name
+        self.enabled = provider_config["enabled"]
+        self.last_update_time = datetime.min.replace(tzinfo=pytz.UTC)
+        self.status = "Not Started" if self.enabled else "Disabled"
+        self.reference_count = 0
+
+
+    def start(self):
+        """Start the provider. This should return immediately after spawning threads to access the remote resources"""
+
+        raise NotImplementedError("Subclasses must implement this method")
+
+
+    def stop(self):
+        """Stop any threads and prepare for application shutdown"""
+
+        raise NotImplementedError("Subclasses must implement this method")