commit 6113f594c606bd5b93fb44eaf3bccb6c38f654cc · edavis.dev/bsky-tools

+33 -9
firehose_utils.py
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       import dag_cbor

     

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       import redis

     

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       from atproto import CAR

     

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       from io import BytesIO

     

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       def commit_ops(payload):

     

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           # TODO(ejd): figure out how to validate blocks

     

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           car_parsed = CAR.from_bytes(payload['blocks'])

     

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           for op in payload['ops']:

     

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               repo_op = op.copy()

     

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               if op['cid'] is not None:

     

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                   repo_op['cid'] = op['cid'].encode('base32')

     

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                   repo_op['record'] = car_parsed.blocks[repo_op['cid']]

     

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               yield repo_op

     

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       def subscribe_commits():

     

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           redis_cnx = redis.Redis()

     

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           redis_sub = redis_cnx.pubsub(ignore_subscribe_messages=True)

     

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           redis_sub.subscribe('bsky-tools:firehose:stream')

     

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           for event in redis_sub.listen():

     

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               frame = BytesIO(event['data'])

     

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               header = dag_cbor.decode(frame, allow_concat=True)

     

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               if header['op'] != 1 or header['t'] != '#commit':

     

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                   continue

     

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               payload = dag_cbor.decode(frame)

     

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               if payload['tooBig']:

     

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                   # TODO(ejd): figure out how to get blocks out-of-band

     

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                   continue

     

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               # TODO(ejd): figure out how to validate blocks

     

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               blocks = payload.pop('blocks')

     

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               car_parsed = CAR.from_bytes(blocks)

     

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               message = payload.copy()

     

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               del message['ops']

     

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               message['commit'] = message['commit'].encode('base32')

     

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               for commit_op in payload['ops']:

     

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                   op = commit_op.copy()

     

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                   if op['cid'] is not None:

     

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                       op['cid'] = op['cid'].encode('base32')

     

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                       op['record'] = car_parsed.blocks[op['cid']]

     

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                   yield message, op