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import asyncio | ||
import signal | ||
import time | ||
from collections import defaultdict | ||
from types import FrameType | ||
from typing import Any | ||
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from atproto import ( | ||
CAR, | ||
AsyncFirehoseSubscribeReposClient, | ||
AtUri, | ||
firehose_models, | ||
models, | ||
parse_subscribe_repos_message, | ||
) | ||
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_INTERESTED_RECORDS = { | ||
models.ids.AppBskyFeedLike: models.AppBskyFeedLike, | ||
models.ids.AppBskyFeedPost: models.AppBskyFeedPost, | ||
models.ids.AppBskyGraphFollow: models.AppBskyGraphFollow, | ||
} | ||
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def _get_ops_by_type(commit: models.ComAtprotoSyncSubscribeRepos.Commit) -> defaultdict: | ||
operation_by_type = defaultdict(lambda: {'created': [], 'deleted': []}) | ||
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car = CAR.from_bytes(commit.blocks) | ||
for op in commit.ops: | ||
if op.action == 'update': | ||
# not supported yet | ||
continue | ||
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uri = AtUri.from_str(f'at://{commit.repo}/{op.path}') | ||
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if op.action == 'create': | ||
if not op.cid: | ||
continue | ||
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create_info = {'uri': str(uri), 'cid': str(op.cid), 'author': commit.repo} | ||
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record_raw_data = car.blocks.get(op.cid) | ||
if not record_raw_data: | ||
continue | ||
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record = models.get_or_create(record_raw_data, strict=False) | ||
record_type = _INTERESTED_RECORDS.get(uri.collection) | ||
if record_type and models.is_record_type(record, record_type): | ||
operation_by_type[uri.collection]['created'].append({'record': record, **create_info}) | ||
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if op.action == 'delete': | ||
operation_by_type[uri.collection]['deleted'].append({'uri': str(uri)}) | ||
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return operation_by_type | ||
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def measure_events_per_second(func: callable) -> callable: | ||
def wrapper(*args) -> Any: | ||
wrapper.calls += 1 | ||
cur_time = time.time() | ||
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if cur_time - wrapper.start_time >= 1: | ||
print(f'NETWORK LOAD: {wrapper.calls} events/second') | ||
wrapper.start_time = cur_time | ||
wrapper.calls = 0 | ||
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return func(*args) | ||
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wrapper.calls = 0 | ||
wrapper.start_time = time.time() | ||
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return wrapper | ||
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async def signal_handler(_: int, __: FrameType) -> None: | ||
print('Keyboard interrupt received. Stopping...') | ||
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# Stop receiving new messages | ||
await client.stop() | ||
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async def main(firehose_client: AsyncFirehoseSubscribeReposClient) -> None: | ||
@measure_events_per_second | ||
async def on_message_handler(message: firehose_models.MessageFrame) -> None: | ||
commit = parse_subscribe_repos_message(message) | ||
if not isinstance(commit, models.ComAtprotoSyncSubscribeRepos.Commit): | ||
return | ||
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if commit.seq % 20 == 0: | ||
firehose_client.update_params(models.ComAtprotoSyncSubscribeRepos.Params(cursor=commit.seq)) | ||
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if not commit.blocks: | ||
return | ||
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ops = _get_ops_by_type(commit) | ||
for created_post in ops[models.ids.AppBskyFeedPost]['created']: | ||
author = created_post['author'] | ||
record = created_post['record'] | ||
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inlined_text = record.text.replace('\n', ' ') | ||
print(f'NEW POST [CREATED_AT={record.created_at}][AUTHOR={author}]: {inlined_text}') | ||
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await client.start(on_message_handler) | ||
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if __name__ == '__main__': | ||
signal.signal(signal.SIGINT, lambda _, __: asyncio.create_task(signal_handler(_, __))) | ||
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start_cursor = None | ||
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params = None | ||
if start_cursor is not None: | ||
params = models.ComAtprotoSyncSubscribeRepos.Params(cursor=start_cursor) | ||
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client = AsyncFirehoseSubscribeReposClient(params) | ||
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# use run() for a higher Python version | ||
asyncio.get_event_loop().run_until_complete(main(client)) |