json-storage-manager 0.1.12

JSON Storage Manager for JSON data stored in text-files

json-storage-manager

json-storage-manager is a Python Package that simply manages the JSON files with the stored data of products and orders for a demo store API.

Installation

pip install json-storage-manager

atomic

Usage

atomic is basically used as a custom context manager for writing JSON files without downtime for the original file. It simply loads the JSON file into memory and opens a temporary file using the tempfile Python Package, finally once the operation is finished it performs an os.replace() to replace the original file (which is an atomic operation on Linux systems).

from json_storage_manager import atomic

with atomic.atomic_write(str(json_file)) as temp_file:
        with open(str(json_file)) as products_file:
            # get the JSON data into memory
            products_data = json.load(products_file)
        # now process the JSON data
        products_data.append(
            {'uuid': "2299d69e-deba-11e8-bded-680715cce955",
             'special_price': 111.0,
             'name': "Test Product"
             })
        json.dump(products_data, temp_file)