Make SERVER_HOST optional

barcode_server/server.py

@@ -0,0 +1,47 @@
+import asyncio
+import logging
+from typing import Dict
+
+from barcode_server.barcode import BarcodeReader, BarcodeEvent
+from barcode_server.config import AppConfig
+from barcode_server.const import *
+from barcode_server.notifier import BarcodeNotifier
+from barcode_server.notifier.serial import SerialNotifier
+from barcode_server.notifier.file import FileNotifier
+from barcode_server.stats import REST_TIME_DEVICES, WEBSOCKET_CLIENT_COUNT
+from barcode_server.util import input_device_to_dict
+
+LOGGER = logging.getLogger(__name__)
+
+class Server:
+
+    def __init__(self, config: AppConfig, barcode_reader: BarcodeReader):
+        self.config = config
+
+        self.barcode_reader = barcode_reader
+        self.barcode_reader.add_listener(self.on_barcode)
+
+        self.notifiers: Dict[str, BarcodeNotifier] = {}
+
+        if config.SERIAL_PATH_A.value is not None:
+            serial_notifier = SerialNotifier(config.SERIAL_PATH_A.value, config.SERIAL_PATH_B.value)
+            self.notifiers["serial"] = serial_notifier
+
+        if config.FILE_PATH.value is not None:
+            file_notifier = FileNotifier(config.FILE_PATH.value)
+            self.notifiers["file"] = file_notifier
+
+    async def start(self):
+        # start detecting and reading barcode scanners
+        await self.barcode_reader.start()
+        # start notifier queue processors
+        for key, notifier in self.notifiers.items():
+            LOGGER.debug(f"Starting notifier: {key}")
+            await notifier.start()
+
+        # wait forever
+        return await asyncio.Event().wait()
+
+    async def on_barcode(self, event: BarcodeEvent):
+        for key, notifier in self.notifiers.items():
+            await notifier.add_event(event)