JFIF$        dd7 

Viewing File: /usr/lib/python3.9/site-packages/dnf/persistor.py

# persistor.py
# Persistence data container.
#
# Copyright (C) 2013-2016 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties 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 this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.  Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
#

# The current implementation is storing to files in persistdir. Do not depend on
# specific files existing, instead use the persistor API. The underlying
# implementation can change, e.g. for one general file with a serialized dict of
# data etc.

from __future__ import absolute_import
from __future__ import unicode_literals
from dnf.i18n import _
import dnf.util
import errno
import fnmatch
import json
import logging
import os
import re

logger = logging.getLogger("dnf")


class JSONDB(object):

    def _check_json_db(self, json_path):
        if not os.path.isfile(json_path):
            # initialize new db
            dnf.util.ensure_dir(os.path.dirname(json_path))
            self._write_json_db(json_path, [])

    def _get_json_db(self, json_path, default=[]):
        with open(json_path, 'r') as f:
            content = f.read()
        if content == "":
            # empty file is invalid json format
            logger.warning(_("%s is empty file"), json_path)
            self._write_json_db(json_path, default)
        else:
            try:
                default = json.loads(content)
            except ValueError as e:
                logger.warning(e)
        return default

    @staticmethod
    def _write_json_db(json_path, content):
        with open(json_path, 'w') as f:
            json.dump(content, f)


class RepoPersistor(JSONDB):
    """Persistent data kept for repositories.

    Is arch/releasever specific and stores to cachedir.

    """

    def __init__(self, cachedir):
        self.cachedir = cachedir
        self.db_path = os.path.join(self.cachedir, "expired_repos.json")
        self.expired_to_add = set()
        self.reset_last_makecache = False

    @property
    def _last_makecache_path(self):
        return os.path.join(self.cachedir, "last_makecache")

    def get_expired_repos(self):
        try:
            self._check_json_db(self.db_path)
            return set(self._get_json_db(self.db_path))
        except OSError as e:
            logger.warning(_("Failed to load expired repos cache: %s"), e)
            return None

    def save(self):
        try:
            self._check_json_db(self.db_path)
            self._write_json_db(self.db_path, list(self.expired_to_add))
        except OSError as e:
            logger.warning(_("Failed to store expired repos cache: %s"), e)
            return False
        if self.reset_last_makecache:
            try:
                dnf.util.touch(self._last_makecache_path)
                return True
            except IOError:
                logger.warning(_("Failed storing last makecache time."))
                return False

    def since_last_makecache(self):
        try:
            return int(dnf.util.file_age(self._last_makecache_path))
        except OSError:
            logger.warning(_("Failed determining last makecache time."))
            return None


class TempfilePersistor(JSONDB):

    def __init__(self, cachedir):
        self.db_path = os.path.join(cachedir, "tempfiles.json")
        self.tempfiles_to_add = set()
        self._empty = False

    def get_saved_tempfiles(self):
        self._check_json_db(self.db_path)
        return self._get_json_db(self.db_path)

    def save(self):
        if not self._empty and not self.tempfiles_to_add:
            return
        self._check_json_db(self.db_path)
        if self._empty:
            self._write_json_db(self.db_path, [])
            return
        if self.tempfiles_to_add:
            data = set(self._get_json_db(self.db_path))
            data.update(self.tempfiles_to_add)
            self._write_json_db(self.db_path, list(data))

    def empty(self):
        self._empty = True
Back to Directory  nL+D550H?Mx ,D"v]qv;6*Zqn)ZP0!1 A "#a$2Qr D8 a Ri[f\mIykIw0cuFcRı?lO7к_f˓[C$殷WF<_W ԣsKcëIzyQy/_LKℂ;C",pFA:/]=H  ~,ls/9ć:[=/#f;)x{ٛEQ )~ =𘙲r*2~ a _V=' kumFD}KYYC)({ *g&f`툪ry`=^cJ.I](*`wq1dđ#̩͑0;H]u搂@:~וKL Nsh}OIR*8:2 !lDJVo(3=M(zȰ+i*NAr6KnSl)!JJӁ* %݉?|D}d5:eP0R;{$X'xF@.ÊB {,WJuQɲRI;9QE琯62fT.DUJ;*cP A\ILNj!J۱+O\͔]ޒS߼Jȧc%ANolՎprULZԛerE2=XDXgVQeӓk yP7U*omQIs,K`)6\G3t?pgjrmۛجwluGtfh9uyP0D;Uڽ"OXlif$)&|ML0Zrm1[HXPlPR0'G=i2N+0e2]]9VTPO׮7h(F*癈'=QVZDF,d߬~TX G[`le69CR(!S2!P <0x<!1AQ "Raq02Br#SCTb ?Ζ"]mH5WR7k.ۛ!}Q~+yԏz|@T20S~Kek *zFf^2X*(@8r?CIuI|֓>^ExLgNUY+{.RѪ τV׸YTD I62'8Y27'\TP.6d&˦@Vqi|8-OΕ]ʔ U=TL8=;6c| !qfF3aů&~$l}'NWUs$Uk^SV:U# 6w++s&r+nڐ{@29 gL u"TÙM=6(^"7r}=6YݾlCuhquympǦ GjhsǜNlɻ}o7#S6aw4!OSrD57%|?x>L |/nD6?/8w#[)L7+6〼T ATg!%5MmZ/c-{1_Je"|^$'O&ޱմTrb$w)R$& N1EtdU3Uȉ1pM"N*(DNyd96.(jQ)X 5cQɎMyW?Q*!R>6=7)Xj5`J]e8%t!+'!1Q5 !1 AQaqё#2"0BRb?Gt^## .llQT $v,,m㵜5ubV =sY+@d{N! dnO<.-B;_wJt6;QJd.Qc%p{ 1,sNDdFHI0ГoXшe黅XۢF:)[FGXƹ/w_cMeD,ʡcc.WDtA$j@:) -# u c1<@ۗ9F)KJ-hpP]_x[qBlbpʖw q"LFGdƶ*s+ډ_Zc"?%t[IP 6J]#=ɺVvvCGsGh1 >)6|ey?Lӣm,4GWUi`]uJVoVDG< SB6ϏQ@ TiUlyOU0kfV~~}SZ@*WUUi##; s/[=!7}"WN]'(L! ~y5g9T̅JkbM' +s:S +B)v@Mj e Cf jE 0Y\QnzG1д~Wo{T9?`Rmyhsy3!HAD]mc1~2LSu7xT;j$`}4->L#vzŏILS ֭T{rjGKC;bpU=-`BsK.SFw4Mq]ZdHS0)tLg