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# This file is part of Gajim.
#
# Gajim is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; version 3 only.
#
# Gajim is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Gajim. If not, see <http://www.gnu.org/licenses/>.
from __future__ import annotations
from typing import Any
from typing import NamedTuple
import json
import logging
import sqlite3
import time
from collections import defaultdict
from collections import namedtuple
from nbxmpp.protocol import JID
from nbxmpp.structs import DiscoInfo
from nbxmpp.structs import RosterItem
from gajim.common import configpaths
from gajim.common.storage.base import Encoder
from gajim.common.storage.base import json_decoder
from gajim.common.storage.base import SqliteStorage
from gajim.common.storage.base import timeit
ContactCacheDictT = dict[tuple[str, JID], dict[str, Any]]
CURRENT_USER_VERSION = 10
CACHE_SQL_STATEMENT = '''
CREATE TABLE caps_cache (
hash_method TEXT,
hash TEXT,
data TEXT,
last_seen INTEGER
);
CREATE TABLE last_seen_disco_info(
jid TEXT PRIMARY KEY UNIQUE,
disco_info TEXT,
last_seen INTEGER
);
CREATE TABLE roster(
account TEXT PRIMARY KEY UNIQUE,
roster TEXT
);
CREATE TABLE muc(
account TEXT,
jid TEXT,
avatar TEXT,
PRIMARY KEY (account, jid)
);
CREATE TABLE contact(
account TEXT,
jid TEXT,
avatar TEXT,
avatar_ts INTEGER,
nickname TEXT,
nickname_ts INTEGER,
PRIMARY KEY (account, jid)
);
CREATE TABLE unread(
account TEXT,
jid TEXT,
count INTEGER,
message_id TEXT,
timestamp INTEGER,
PRIMARY KEY (account, jid)
);
CREATE INDEX idx_unread ON unread(account, jid);
CREATE INDEX idx_contact ON contact(jid);
CREATE INDEX idx_muc ON muc(jid);
PRAGMA user_version=%s;
''' % CURRENT_USER_VERSION
log = logging.getLogger('gajim.c.storage.cache')
class UnreadTableRow(NamedTuple):
account: str
jid: JID
count: int # pyright: ignore
message_id: str
timestamp: float
class CacheStorage(SqliteStorage):
def __init__(self, in_memory: bool = False):
path = None if in_memory else configpaths.get('CACHE_DB')
SqliteStorage.__init__(self,
log,
path,
CACHE_SQL_STATEMENT)
self._entity_caps_cache: dict[tuple[str, str], DiscoInfo] = {}
self._disco_info_cache: dict[JID, DiscoInfo] = {}
self._muc_cache: ContactCacheDictT = defaultdict(dict)
self._contact_cache: ContactCacheDictT = defaultdict(dict)
def init(self, **kwargs: Any) -> None:
SqliteStorage.init(self,
detect_types=sqlite3.PARSE_COLNAMES)
self._set_journal_mode('WAL')
self._con.row_factory = self._namedtuple_factory
self._fill_disco_info_cache()
self._clean_caps_table()
self._load_caps_data()
@staticmethod
def _namedtuple_factory(cursor: sqlite3.Cursor,
row: tuple[Any, ...]) -> NamedTuple:
assert cursor.description is not None
fields = [col[0] for col in cursor.description]
Row = namedtuple('Row', fields) # pyright: ignore
return Row(*row)
def _migrate(self) -> None:
try:
user_version = self.user_version
except sqlite3.DatabaseError as error:
log.error('Database error: %s', error)
self._reinit_storage()
return
if user_version > CURRENT_USER_VERSION:
# Gajim was downgraded, reinit the storage
self._reinit_storage()
return
if user_version < 10:
self._reinit_storage()
return
@timeit
def _load_caps_data(self) -> None:
rows = self._con.execute(
'SELECT hash_method, hash, data as "data [disco_info]" '
'FROM caps_cache')
for row in rows:
self._entity_caps_cache[(row.hash_method, row.hash)] = row.data
@timeit
def add_caps_entry(self,
jid: JID,
hash_method: str,
hash_: str,
caps_data: DiscoInfo) -> None:
self._entity_caps_cache[(hash_method, hash_)] = caps_data
self._disco_info_cache[jid] = caps_data
self._con.execute('''
INSERT INTO caps_cache (hash_method, hash, data, last_seen)
VALUES (?, ?, ?, ?)
''', (hash_method, hash_, caps_data, int(time.time())))
self._delayed_commit()
def get_caps_entry(self, hash_method: str, hash_: str):
return self._entity_caps_cache.get((hash_method, hash_))
@timeit
def update_caps_time(self, method: str, hash_: str) -> None:
sql = '''UPDATE caps_cache SET last_seen = ?
WHERE hash_method = ? and hash = ?'''
self._con.execute(sql, (int(time.time()), method, hash_))
self._delayed_commit()
@timeit
def _clean_caps_table(self) -> None:
'''
Remove caps which was not seen for 3 months
'''
timestamp = int(time.time()) - 3 * 30 * 24 * 3600
self._con.execute('DELETE FROM caps_cache WHERE last_seen < ?',
(timestamp,))
self._delayed_commit()
@timeit
def _fill_disco_info_cache(self) -> None:
sql = '''SELECT disco_info as "disco_info [disco_info]",
jid as "jid [jid]", last_seen FROM
last_seen_disco_info'''
rows = self._con.execute(sql).fetchall()
for row in rows:
disco_info = row.disco_info._replace(timestamp=row.last_seen)
self._disco_info_cache[row.jid] = disco_info
log.info('%d DiscoInfo entries loaded', len(rows))
def get_last_disco_info(self,
jid: JID,
max_age: int = 0) -> DiscoInfo | None:
'''
Get last disco info from jid
:param jid: The jid
:param max_age: max age in seconds of the DiscoInfo record
'''
disco_info = self._disco_info_cache.get(jid)
if disco_info is not None:
max_timestamp = time.time() - max_age if max_age else 0
if max_timestamp > disco_info.timestamp: # pyright: ignore
return None
return disco_info
@timeit
def set_last_disco_info(self,
jid: JID,
disco_info: DiscoInfo,
cache_only: bool = False) -> None:
'''
Get last disco info from jid
:param jid: The jid
:param disco_info: A DiscoInfo object
'''
log.info('Save disco info from %s', jid)
if cache_only:
self._disco_info_cache[jid] = disco_info
return
disco_exists = self.get_last_disco_info(jid) is not None
if disco_exists:
sql = '''UPDATE last_seen_disco_info SET
disco_info = ?, last_seen = ?
WHERE jid = ?'''
self._con.execute(sql, (disco_info, disco_info.timestamp, str(jid)))
else:
sql = '''INSERT INTO last_seen_disco_info
(jid, disco_info, last_seen)
VALUES (?, ?, ?)'''
self._con.execute(sql, (str(jid), disco_info, disco_info.timestamp))
self._disco_info_cache[jid] = disco_info
self._delayed_commit()
@timeit
def store_roster(self, account: str, roster: dict[JID, RosterItem]) -> None:
serialized = json.dumps(list(roster.values()), cls=Encoder)
insert_sql = 'INSERT INTO roster(account, roster) VALUES(?, ?)'
update_sql = 'UPDATE roster SET roster = ? WHERE account = ?'
try:
self._con.execute(insert_sql, (account, serialized))
except sqlite3.IntegrityError:
self._con.execute(update_sql, (serialized, account))
self._delayed_commit()
@timeit
def load_roster(self, account: str) -> dict[JID, RosterItem] | None:
select_sql = 'SELECT roster FROM roster WHERE account = ?'
result = self._con.execute(select_sql, (account,)).fetchone()
if result is None:
return None
roster: dict[JID, RosterItem] = {}
data = json.loads(result.roster, object_hook=json_decoder)
for item in data:
roster[item.jid] = item
return roster
@timeit
def remove_roster(self, account: str) -> None:
delete_sql = 'DELETE FROM roster WHERE account = ?'
self._con.execute(delete_sql, (account,))
self._commit()
@timeit
def set_muc(self,
account: str,
jid: JID,
prop: str,
value: Any
) -> None:
sql = f'''INSERT INTO muc (account, jid, {prop}) VALUES (?, ?, ?)'''
try:
self._con.execute(sql, (account, jid, value))
except sqlite3.IntegrityError:
sql = f'UPDATE muc SET {prop} = ? WHERE account = ? AND jid = ?'
self._con.execute(sql, (value, account, jid))
self._muc_cache[(account, jid)][prop] = value
self._delayed_commit()
@timeit
def get_muc(self, account: str, jid: JID, prop: str) -> Any:
try:
return self._muc_cache[(account, jid)][prop]
except KeyError:
sql = f'''SELECT jid as "jid [jid]", {prop}
FROM muc WHERE account = ? AND jid = ?'''
row = self._con.execute(sql, (account, jid)).fetchone()
value = None if row is None else getattr(row, prop)
self._muc_cache[(account, jid)][prop] = value
return value
@timeit
def set_contact(self,
account: str,
jid: JID,
prop: str,
value: Any
) -> None:
sql = f'''INSERT INTO contact (account, jid, {prop}, {prop}_ts)
VALUES (?, ?, ?, ?)'''
prop_ts = time.time()
try:
self._con.execute(sql, (account, jid, value, prop_ts))
except sqlite3.IntegrityError:
sql = f'''UPDATE contact SET {prop} = ?, {prop}_ts = ?
WHERE account = ? AND jid = ?'''
self._con.execute(sql, (value, prop_ts, account, jid))
self._contact_cache[(account, jid)][prop] = (value, prop_ts)
self._delayed_commit()
@timeit
def get_contact(self, account: str, jid: JID, prop: str) -> Any:
try:
value, prop_ts = self._contact_cache[(account, jid)][prop]
except KeyError:
sql = f'''SELECT jid as "jid [jid]", {prop}, {prop}_ts
FROM contact WHERE account = ? AND jid = ?'''
row = self._con.execute(sql, (account, jid)).fetchone()
value = None if row is None else getattr(row, prop)
prop_ts = 0 if row is None else getattr(row, f'{prop}_ts')
self._contact_cache[(account, jid)][prop] = (value, prop_ts)
return value
else:
# TODO: Expire entries
return value
@timeit
def get_unread(self) -> list[UnreadTableRow]:
sql = 'SELECT * FROM unread'
return self._con.execute(sql).fetchall()
@timeit
def get_unread_count(self, account: str, jid: JID) -> int | None:
sql = '''SELECT count, message_id, timestamp FROM unread
WHERE account = ? AND jid = ?'''
return self._con.execute(sql, (account, jid)).fetchone()
@timeit
def set_unread_count(self,
account: str,
jid: JID,
count: int,
message_id: str,
timestamp: float) -> None:
if self.get_unread_count(account, jid) is not None:
self.update_unread_count(account, jid, count)
else:
sql = '''INSERT INTO unread
(account, jid, count, message_id, timestamp)
VALUES (?, ?, ?, ?, ?)'''
self._con.execute(sql, (account, jid, count, message_id, timestamp))
self._delayed_commit()
@timeit
def update_unread_count(self, account: str, jid: JID, count: int) -> None:
sql = 'UPDATE unread SET count = ? WHERE account = ? AND jid = ?'
self._con.execute(sql, (count, account, jid))
self._delayed_commit()
@timeit
def reset_unread_count(self, account: str, jid: JID) -> None:
sql = 'DELETE FROM unread WHERE account = ? AND jid = ?'
self._con.execute(sql, (account, jid))
self._delayed_commit()
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