azure_PDF2image.py

import os, io
import logging
from PIL import Image
import azure.functions as func
import tempfile
from azure.storage.blob import BlockBlobService

from pdf2image import convert_from_path, convert_from_bytes


BlobAccount = os.environ['BlobAccount']
BlobKey = os.environ['BlobKey']
BlobItem = os.environ['BlobItem']

def main(myblob: func.InputStream):
    logging.info(f"Python blob trigger function processed blob \n"
                 f"Name: {myblob.name}\n"
                 f"Blob Size: {myblob.length} bytes")
    
    file = myblob.read()
    image = io.BytesIO(file)   
    
    blob_service = BlockBlobService(account_name=BlobAccount, account_key=BlobKey) 
    
    blob_name = myblob.name.replace(BlobItem + "/", "") 

    with open(blob_name, "wb") as outfile:
        # Copy the BytesIO stream to the output file
        outfile.write(image.getbuffer())
    

    with tempfile.TemporaryDirectory() as path:
        pages = convert_from_path(blob_name,dpi=600, output_folder=path)
    
    x=1
    for page in pages:
        filename = str(x)+".jpg"
        page.save(filename, "JPEG")
        x = x +1
        blob_service.create_blob_from_path(BlobItem,filename,filename)
        os.remove(filename)

    os.remove(blob_name)