feat: printing uploaded product barcode images

modules/fulfillment_base/barcodes_pdf_gen/barcode_pdf_generator.py

@@ -1,6 +1,7 @@
 from io import BytesIO
 from typing import Any, Optional
 
+import aiohttp
 from reportlab.graphics.barcode import code128
 from reportlab.lib.units import mm
 from reportlab.platypus import Spacer, PageBreak, Paragraph
@@ -24,7 +25,7 @@ class BarcodePdfGenerator(PDFGenerator):
                 return None
         return value
 
-    def generate(
+    async def generate(
         self, barcodes_data: list[BarcodeData | PdfBarcodeImageGenData]
     ) -> BytesIO:
         pdf_barcodes_gen_data: list[PdfBarcodeGenData | PdfBarcodeImageGenData] = []
@@ -52,9 +53,9 @@ class BarcodePdfGenerator(PDFGenerator):
                 }
             )
 
-        return self._generate(pdf_barcodes_gen_data)
+        return await self._generate(pdf_barcodes_gen_data)
 
-    def _generate(
+    async def _generate(
         self, barcodes_data: list[PdfBarcodeGenData | PdfBarcodeImageGenData]
     ) -> BytesIO:
         pdf_maker = PdfMaker((self.page_width, self.page_height))
@@ -63,9 +64,10 @@ class BarcodePdfGenerator(PDFGenerator):
 
         for barcode_data in barcodes_data:
             if "barcode_value" in barcode_data:
-                pdf_files.append(self._generate_for_one_product(barcode_data))
+                result = self._generate_for_one_product(barcode_data)
             else:
-                pdf_files.append(self._generate_for_one_product_using_img(barcode_data))
+                result = await self._generate_for_one_product_using_img(barcode_data)
+            pdf_files.append(result)
             pdf_files.append(self._generate_spacers())
 
         for file in pdf_files[:-1]:
@@ -138,11 +140,18 @@ class BarcodePdfGenerator(PDFGenerator):
         buffer.seek(0)
         return buffer
 
-    def _generate_for_one_product_using_img(
+    async def _generate_for_one_product_using_img(
         self, barcode_data: PdfBarcodeImageGenData
     ) -> BytesIO:
-        with open(barcode_data["barcode_image_url"], "rb") as pdf_file:
-            pdf_bytes = pdf_file.read()
+        pdf_url = barcode_data["barcode_image_url"]
+
+        async with aiohttp.ClientSession() as session:
+            async with session.get(pdf_url) as response:
+                if response.status != 200:
+                    raise ValueError(
+                        f"Failed to download PDF from {pdf_url} (status {response.status})"
+                    )
+                pdf_bytes = await response.read()
 
         pdf_maker = PdfMaker((self.page_width, self.page_height))
         for _ in range(barcode_data["num_duplicates"]):