commit 2b7194dc23aed630f71e72fe6a8530b36c35826a · edavis.dev/bsky-tools

+4 -2

feed_manager.py

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       from feeds.battle import BattleFeed

     

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       from feeds.rapidfire import RapidFireFeed

     

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       from feeds.popular import PopularFeed

     

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       from feeds.rapidfire import RapidFireFeed

     

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       class FeedManager:

     

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           def __init__(self):

     
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                   feed.commit_changes()

     

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       feed_manager = FeedManager()

     

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       feed_manager.register(BattleFeed)

     

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       feed_manager.register(RapidFireFeed)

     

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       feed_manager.register(PopularFeed)

     

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       feed_manager.register(RapidFireFeed)

+99

feeds/battle.py

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       import logging

     

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       import apsw

     

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       import apsw.ext

     

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       import grapheme

     

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       from . import BaseFeed

     

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       MAX_TEXT_LENGTH = 140

     

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       class RapidFireFeed(BaseFeed):

     

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           FEED_URI = 'at://did:plc:4nsduwlpivpuur4mqkbfvm6a/app.bsky.feed.generator/rapidfire'

     

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           def __init__(self):

     

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               self.db_cnx = apsw.Connection('db/rapidfire.db')

     

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               self.db_cnx.pragma('journal_mode', 'WAL')

     

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               self.db_cnx.pragma('wal_autocheckpoint', '0')

     

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               with self.db_cnx:

     

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                   self.db_cnx.execute("""

     

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                   create table if not exists posts (uri text, create_ts timestamp, lang text);

     

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                   create index if not exists create_ts_idx on posts(create_ts);

     

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                   """)

     

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               self.logger = logging.getLogger('feeds.rapidfire')

     

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           def process_commit(self, commit):

     

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               op = commit['op']

     

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               if op['action'] != 'create':

     

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                   return

     

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               collection, _ = op['path'].split('/')

     

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               if collection != 'app.bsky.feed.post':

     

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                   return

     

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               record = op.get('record')

     

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               if record is None:

     

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                   return

     

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               if all([

     

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                   grapheme.length(record['text']) <= MAX_TEXT_LENGTH,

     

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                   record.get('reply') is None,

     

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                   record.get('embed') is None,

     

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                   record.get('facets') is None

     

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               ]):

     

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                   repo = commit['repo']

     

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                   path = op['path']

     

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                   post_uri = f'at://{repo}/{path}'

     

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                   ts = self.safe_timestamp(record['createdAt']).timestamp()

     

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                   self.transaction_begin(self.db_cnx)

     

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                   langs = record.get('langs') or ['']

     

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                   for lang in langs:

     

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                       self.db_cnx.execute(

     

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                           'insert into posts (uri, create_ts, lang) values (:uri, :ts, :lang)',

     

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                           dict(uri=post_uri, ts=ts, lang=lang)

     

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                       )

     

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           def delete_old_posts(self):

     

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               self.db_cnx.execute(

     

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                   "delete from posts where create_ts < unixepoch('now', '-15 minutes')"

     

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               )

     

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           def commit_changes(self):

     

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               self.logger.debug('committing changes')

     

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               self.delete_old_posts()

     

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               self.transaction_commit(self.db_cnx)

     

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               self.wal_checkpoint(self.db_cnx, 'RESTART')

     

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           def serve_feed(self, limit, offset, langs):

     

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               if '*' in langs:

     

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                   cur = self.db_cnx.execute(

     

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                       "select uri from posts order by create_ts desc limit :limit offset :offset",

     

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                       dict(limit=limit, offset=offset)

     

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                   )

     

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                   return [uri for (uri,) in cur]

     

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               else:

     

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                   lang_values = list(langs.values())

     

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                   lang_selects = ['select uri, create_ts from posts where lang = ?'] * len(lang_values)

     

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                   lang_clause = ' union '.join(lang_selects)

     

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                   cur = self.db_cnx.execute(

     

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                       lang_clause + ' order by create_ts desc limit ? offset ?',

     

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                       [*lang_values, limit, offset]

     

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                   )

     

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                   return [uri for (uri, create_ts) in cur]

     

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           def serve_feed_debug(self, limit, offset, langs):

     

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               query = """

     

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               select *, unixepoch('now') - create_ts as age_seconds

     

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               from posts

     

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               order by create_ts desc

     

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               limit :limit offset :offset

     

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               """

     

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               bindings = dict(limit=limit, offset=offset)

     

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               return apsw.ext.format_query_table(

     

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                   self.db_cnx, query, bindings,

     

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                   string_sanitize=2, text_width=9999, use_unicode=True

     

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               )