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edavis.dev
1#!/usr/bin/env python3
2
3import asyncio
4from datetime import datetime, timezone
5import json
6import os
7import sqlite3
8import sys
9
10import redis
11import websockets
12
13app_bsky_allowlist = set([
14 'app.bsky.actor.profile',
15 'app.bsky.feed.generator',
16 'app.bsky.feed.like',
17 'app.bsky.feed.post',
18 'app.bsky.feed.postgate',
19 'app.bsky.feed.repost',
20 'app.bsky.feed.threadgate',
21 'app.bsky.graph.block',
22 'app.bsky.graph.follow',
23 'app.bsky.graph.list',
24 'app.bsky.graph.listblock',
25 'app.bsky.graph.listitem',
26 'app.bsky.graph.starterpack',
27 'app.bsky.labeler.service',
28 'chat.bsky.actor.declaration',
29])
30
31other_allowlist = set([
32 'social.psky.feed.post',
33 'social.psky.chat.message',
34])
35
36async def bsky_activity():
37 relay_url = 'ws://localhost:6008/subscribe'
38
39 sys.stdout.write(f'opening websocket connection to {relay_url}\n')
40 sys.stdout.flush()
41
42 async with websockets.connect(relay_url, ping_timeout=60) as firehose:
43 while True:
44 yield json.loads(await firehose.recv())
45
46async def main():
47 redis_cnx = redis.Redis()
48 redis_pipe = redis_cnx.pipeline()
49
50 if os.path.exists('/opt/muninsky/users.db'):
51 db_fname = '/opt/muninsky/users.db'
52 else:
53 db_fname = 'users.db'
54
55 db_cnx = sqlite3.connect(db_fname)
56 with db_cnx:
57 db_cnx.executescript("""
58 PRAGMA journal_mode = WAL;
59 PRAGMA synchronous = off;
60 CREATE TABLE IF NOT EXISTS users (did TEXT, ts TIMESTAMP);
61 CREATE UNIQUE INDEX IF NOT EXISTS did_idx on users(did);
62 CREATE INDEX IF NOT EXISTS ts_idx on users(ts);
63 """)
64
65 sys.stdout.write('starting up\n')
66 sys.stdout.flush()
67
68 op_count = 0
69 async for event in bsky_activity():
70 if event['type'] != 'com':
71 continue
72
73 payload = event.get('commit')
74 if payload is None:
75 continue
76
77 if payload['type'] != 'c':
78 continue
79
80 collection = payload['collection']
81 if collection not in app_bsky_allowlist | other_allowlist:
82 continue
83
84 repo_did = event['did']
85 repo_update_time = datetime.now(timezone.utc)
86 db_cnx.execute(
87 'insert into users values (:did, :ts) on conflict (did) do update set ts = :ts',
88 {'did': repo_did, 'ts': repo_update_time.timestamp()}
89 )
90
91 if collection == 'app.bsky.feed.post':
92 embed = payload['record'].get('embed')
93 if embed is not None and embed.get('$type', ''):
94 embed_type = embed['$type']
95 redis_pipe.incr(f'app.bsky.feed.post:embed:{embed_type}')
96
97 redis_pipe \
98 .incr(collection) \
99 .incr('dev.edavis.muninsky.ops')
100
101 op_count += 1
102 if op_count % 500 == 0:
103 current_time_ms = datetime.now(timezone.utc).timestamp()
104 event_time_ms = event['time_us'] / 1_000_000
105 current_lag = current_time_ms - event_time_ms
106 sys.stdout.write(f'lag: {current_lag:.2f}\n')
107 redis_pipe.execute()
108 db_cnx.commit()
109 sys.stdout.flush()
110
111if __name__ == '__main__':
112 asyncio.run(main())