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#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright (c) 2022 Universidade da Coruña
# Authors:
# - Jonatan Enes [main](jonatan.enes@udc.es)
# - Roberto R. Expósito
# - Juan Touriño
#
# This file is part of the ServerlessContainers framework, from
# now on referred to as ServerlessContainers.
#
# ServerlessContainers 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, either version 3
# of the License, or (at your option) any later version.
#
# ServerlessContainers 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 ServerlessContainers. If not, see <http://www.gnu.org/licenses/>.
from flask import g
import os
import src.StateDatabase.couchdb as couchDB
MAX_TRIES = 10
BACK_OFF_TIME_MS = 500
COUCHDB_URL = os.getenv('COUCHDB_URL')
if not COUCHDB_URL:
COUCHDB_URL = "couchdb"
def get_db():
global COUCHDB_URL
"""Opens a new database connection if there is none yet for the current application context."""
if not hasattr(g, 'db_handler'):
g.db_handler = couchDB.CouchDBServer(couchdb_url=COUCHDB_URL)
return g.db_handler