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edavis.dev
1#!/usr/bin/env python3
2
3import asyncio
4from datetime import datetime, timezone
5from io import BytesIO
6import json
7import os
8import sqlite3
9import sys
10
11from atproto import CAR
12import redis
13import dag_cbor
14import websockets
15
16app_bsky_allowlist = set([
17 'app.bsky.actor.profile',
18 'app.bsky.feed.generator',
19 'app.bsky.feed.like',
20 'app.bsky.feed.post',
21 'app.bsky.feed.repost',
22 'app.bsky.feed.threadgate',
23 'app.bsky.graph.block',
24 'app.bsky.graph.follow',
25 'app.bsky.graph.list',
26 'app.bsky.graph.listblock',
27 'app.bsky.graph.listitem',
28 'app.bsky.labeler.service',
29 'chat.bsky.actor.declaration',
30 'app.bsky.graph.starterpack',
31])
32
33async def bsky_activity():
34 relay_url = 'ws://localhost:6008/subscribe'
35
36 sys.stdout.write(f'opening websocket connection to {relay_url}\n')
37 sys.stdout.flush()
38
39 async with websockets.connect(relay_url, ping_timeout=60) as firehose:
40 while True:
41 payload = BytesIO(await firehose.recv())
42
43 yield json.load(payload)
44
45async def main():
46 redis_cnx = redis.Redis()
47 redis_pipe = redis_cnx.pipeline()
48
49 if os.path.exists('/opt/muninsky/users.db'):
50 db_fname = '/opt/muninsky/users.db'
51 else:
52 db_fname = 'users.db'
53
54 db_cnx = sqlite3.connect(db_fname)
55 with db_cnx:
56 db_cnx.executescript("""
57 PRAGMA journal_mode = WAL;
58 PRAGMA synchronous = off;
59 CREATE TABLE IF NOT EXISTS users (did TEXT, ts TIMESTAMP);
60 CREATE UNIQUE INDEX IF NOT EXISTS did_idx on users(did);
61 CREATE INDEX IF NOT EXISTS ts_idx on users(ts);
62 """)
63
64 sys.stdout.write('starting up\n')
65 sys.stdout.flush()
66
67 op_count = 0
68 async for payload in bsky_activity():
69 if payload['opType'] != 'c':
70 continue
71
72 collection = payload['collection']
73 if collection not in app_bsky_allowlist:
74 continue
75
76 repo_did = payload['did']
77 repo_update_time = datetime.now(timezone.utc)
78 db_cnx.execute(
79 'insert into users values (:did, :ts) on conflict (did) do update set ts = :ts',
80 {'did': repo_did, 'ts': repo_update_time.timestamp()}
81 )
82
83 redis_pipe \
84 .incr(collection) \
85 .incr('dev.edavis.muninsky.ops')
86
87 op_count += 1
88 if op_count % 500 == 0:
89 now = datetime.now(timezone.utc)
90 payload_seq = payload['seq']
91 payload_lag = now - repo_update_time
92
93 sys.stdout.write(f'seq: {payload_seq}, lag: {payload_lag.total_seconds()}\n')
94 redis_pipe.set('dev.edavis.muninsky.seq', payload_seq)
95 redis_pipe.execute()
96 db_cnx.commit()
97 sys.stdout.flush()
98
99if __name__ == '__main__':
100 asyncio.run(main())