view src/browser/sat_browser/logging.py @ 985:64826e69f365

pages: cache mechanism, first draft: a cache mechanism has been implemented to retrieve pages with a complexe rendering and/or calling expensive methods (e.g. network calls). For now it's is done only for Pubsub and with service profile (i.e. profile used when user is not logged in). When a LiberviaPage use cache, node is subscribed, and as long as no event is received (even can be item update, item retraction, or node deletion), the cached page is returned. This is a first draft, it is planed to handle in the future logged users (which can be tricky as we must not let (un)subscribed node if user is not willing to), multi-nodes pages (e.g.: item + comments) and cache for page not depending on pubsub (e.g. chat).
author Goffi <goffi@goffi.org>
date Sun, 19 Nov 2017 17:18:14 +0100
parents fd4eae654182
children f2170536ba23
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#!/usr/bin/python
# -*- coding: utf-8 -*-

# Libervia: a Salut à Toi frontend
# Copyright (C) 2011-2017 Jérôme Poisson <goffi@goffi.org>

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""This module configure logs for Libervia browser side"""

from __pyjamas__ import console
from constants import Const as C
from sat.core import log  # XXX: we don't use core.log_config here to avoid the impossible imports in pyjamas


class LiberviaLogger(log.Logger):

    def out(self, message, level=None):
        try:
            console
        except:
            # XXX: for older Firefox version, the displayed error is "libervia_main ReferenceError: console is not defined"
            # but none of the following exception class is working: ReferenceError, TypeError, NameError, Exception...
            # it works when you don't explicit a class, tested with Firefox 3.0.4
            print message
            return
        if level == C.LOG_LVL_DEBUG:
            console.debug(message)
        elif level == C.LOG_LVL_INFO:
            console.info(message)
        elif level == C.LOG_LVL_WARNING:
            console.warn(message)
        else:
            console.error(message)


def configure():
    fmt = '[%(name)s] %(message)s'
    log.configure(C.LOG_BACKEND_CUSTOM,
                  logger_class = LiberviaLogger,
                  level = C.LOG_LVL_DEBUG,
                  fmt = fmt,
                  output = None,
                  logger = None,
                  colors = False,
                  force_colors = False)
    # FIXME: workaround for Pyjamas, need to be removed when Pyjamas is fixed
    LiberviaLogger.fmt = fmt