https://github.com/kralverde/py-ipfs-car-decoder

A way to decode IPFS CAR blocks in python and save them to disk or stream file-likes.
https://github.com/kralverde/py-ipfs-car-decoder

async car ipfs ipld python python3

Last synced: 10 days ago
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A way to decode IPFS CAR blocks in python and save them to disk or stream file-likes.

• Host: GitHub
• URL: https://github.com/kralverde/py-ipfs-car-decoder
• Owner: kralverde
• Created: 2023-10-15T21:52:24.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2024-02-16T19:30:09.000Z (11 months ago)
• Last Synced: 2024-04-24T06:21:55.475Z (9 months ago)
• Topics: async, car, ipfs, ipld, python, python3
• Language: Python
• Homepage:
• Size: 23.4 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.rst

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README

        
Validate what an IPFS gateway returns by decoding and validating the CAR block.

Usage

-----

CARs can be read from memory or file and can be exported as a file/folder or byte stream

>>> import asyncio

>>> import aiohttp

...

>>> from ipfs_car_decoder import ChunkedMemoryByteStream, stream_bytes

...

>>> ipfs_hash = 'bafkreibm6jg3ux5qumhcn2b3flc3tyu6dmlb4xa7u5bf44yegnrjhc4yeq'

...

>>> async def test():

...     stream = ChunkedMemoryByteStream()

...     async with aiohttp.ClientSession() as session:

...         async with session.get(f'https://ipfs.io/ipfs/{ipfs_hash}', headers={'Accept':'application/vnd.ipld.car'}) as resp:

...             resp.raise_for_status()

...             assert resp.content_type == 'application/vnd.ipld.car'

...             async for chunk, _ in resp.content.iter_chunks():

...                 await stream.append_bytes(chunk)

...     await stream.mark_complete()

...     acc = b''

...     async for chunk in stream_bytes(ipfs_hash, stream):

...         acc += chunk

...     print(acc)

...

>>> asyncio.run(test())

b'hello'