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network.py
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network.py
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# =============================================================================
# Copyright (C) 2014 Ryan Holmes
#
# This file is part of pyfa.
#
# pyfa 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.
#
# pyfa 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 pyfa. If not, see <http://www.gnu.org/licenses/>.
# =============================================================================
import requests
import socket
from logbook import Logger
import config
from service.settings import NetworkSettings
pyfalog = Logger(__name__)
# network timeout, otherwise pyfa hangs for a long while if no internet connection
timeout = 3
socket.setdefaulttimeout(timeout)
class Error(Exception):
def __init__(self, msg=None):
self.message = msg
class RequestError(Exception):
pass
class AuthenticationError(Exception):
pass
class ServerError(Exception):
pass
class TimeoutError(Exception):
pass
class Network:
# Request constants - every request must supply this, as it is checked if
# enabled or not via settings
ENABLED = 1
EVE = 2 # Mostly API, but also covers CREST requests. update: might be useless these days, this Network class needs to be reviewed
PRICES = 4
UPDATE = 8
_instance = None
@classmethod
def getInstance(cls):
if cls._instance is None:
cls._instance = Network()
return cls._instance
def get(self, url, type, **kwargs):
self.__networkAccessCheck(type)
headers = self.__getHeaders()
proxies = self.__getProxies()
try:
resp = requests.get(url, headers=headers, proxies=proxies, **kwargs)
resp.raise_for_status()
return resp
except requests.exceptions.HTTPError as error:
pyfalog.warning('HTTPError:')
pyfalog.warning(error)
if error.response.status_code == 404:
raise RequestError()
elif error.response.status_code == 403:
raise AuthenticationError()
elif error.response.status_code >= 500:
raise ServerError()
raise Error(error)
except requests.exceptions.Timeout:
raise TimeoutError()
except (KeyboardInterrupt, SystemExit):
raise
except Exception as error:
raise Error(error)
def post(self, url, type, jsonData, **kwargs):
self.__networkAccessCheck(type)
headers = self.__getHeaders()
proxies = self.__getProxies()
try:
resp = requests.post(url, json=jsonData, headers=headers, proxies=proxies, **kwargs)
resp.raise_for_status()
return resp
except requests.exceptions.HTTPError as error:
pyfalog.warning('HTTPError:')
pyfalog.warning(error)
if error.response.status_code == 404:
raise RequestError()
elif error.response.status_code == 403:
raise AuthenticationError()
elif error.response.status_code >= 500:
raise ServerError()
raise Error(error)
except requests.exceptions.Timeout:
raise TimeoutError()
except (KeyboardInterrupt, SystemExit):
raise
except Exception as error:
raise Error(error)
def __networkAccessCheck(self, type):
# Make sure request is enabled
access = NetworkSettings.getInstance().getAccess()
if not self.ENABLED & access or not type & access:
pyfalog.warning('Access not enabled - please enable in Preferences > Network')
raise Error('Access not enabled - please enable in Preferences > Network')
def __getHeaders(self):
versionString = '{0}'.format(config.version)
return {'User-Agent': 'pyfa {0} (python-requests {1})'.format(versionString, requests.__version__)}
def __getProxies(self):
# python-requests supports setting proxy for request as parameter to get() / post()
# in a form like: proxies = { 'http': 'http://10.10.1.10:3128', 'https': 'http://10.10.1.10:1080' }
# or with HTTP Basic auth support: proxies = {'http': 'http://user:pass@10.10.1.10:3128/'}
# then you do: requests.get('http://example.org', proxies=proxies)
return NetworkSettings.getInstance().getProxySettingsInRequestsFormat()