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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])
34
35async def bsky_activity():
36 relay_url = 'ws://localhost:6008/subscribe'
37
38 sys.stdout.write(f'opening websocket connection to {relay_url}\n')
39 sys.stdout.flush()
40
41 async with websockets.connect(relay_url, ping_timeout=60) as firehose:
42 while True:
43 yield json.loads(await firehose.recv())
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 event in bsky_activity():
69 if event['type'] != 'com':
70 continue
71
72 payload = event.get('commit')
73 if payload is None:
74 continue
75
76 if payload['type'] != 'c':
77 continue
78
79 collection = payload['collection']
80 if collection not in app_bsky_allowlist | other_allowlist:
81 continue
82
83 repo_did = event['did']
84 repo_update_time = datetime.now(timezone.utc)
85 db_cnx.execute(
86 'insert into users values (:did, :ts) on conflict (did) do update set ts = :ts',
87 {'did': repo_did, 'ts': repo_update_time.timestamp()}
88 )
89
90 if collection == 'app.bsky.feed.post':
91 embed = payload['record'].get('embed')
92 if embed is not None and embed.get('$type', ''):
93 embed_type = embed['$type']
94 redis_pipe.incr(f'app.bsky.feed.post:embed:{embed_type}')
95
96 redis_pipe \
97 .incr(collection) \
98 .incr('dev.edavis.muninsky.ops')
99
100 op_count += 1
101 if op_count % 500 == 0:
102 current_time_ms = datetime.now(timezone.utc).timestamp()
103 event_time_ms = event['time_us'] / 1_000_000
104 current_lag = current_time_ms - event_time_ms
105 sys.stdout.write(f'lag: {current_lag:.2f}\n')
106 redis_pipe.execute()
107 db_cnx.commit()
108 sys.stdout.flush()
109
110if __name__ == '__main__':
111 asyncio.run(main())