IPFS
While working with contract/token metadata, a typical scenario is to fetch it from IPFS. DipDup has a separate datasource to perform such requests via public nodes.
dipdup.yaml
datasources:
ipfs:
kind: ipfs
url: https://ipfs.io/ipfs
You can use this datasource within any callback. Output is either JSON or binary data.
ipfs = ctx.get_ipfs_datasource('ipfs')
file = await ipfs.get('QmdCz7XGkBtd5DFmpDPDN3KFRmpkQHJsDgGiG16cgVbUYu')
assert file[:4].decode()[1:] == 'PDF'
file = await ipfs.get('QmSgSC7geYH3Ae4SpUHy4KutxqNH9ESKBGXoCN4JQdbtEz/package.json')
assert file['name'] == 'json-buffer'
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