panni
108 lines
3.4 KiB
Python
108 lines
3.4 KiB
Python
# coding=utf-8
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from xmlrpclib import SafeTransport, ProtocolError, Fault, Transport
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import certifi
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import ssl
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import os
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import socket
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import logging
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from requests import Session, exceptions
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from retry.api import retry_call
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from subzero.lib.io import get_viable_encoding
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logger = logging.getLogger(__name__)
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pem_file = os.path.normpath(os.path.join(os.path.dirname(os.path.realpath(unicode(__file__, get_viable_encoding()))), "..", certifi.where()))
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try:
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default_ssl_context = ssl.create_default_context(cafile=pem_file)
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except AttributeError:
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# < Python 2.7.9
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default_ssl_context = None
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class RetryingSession(Session):
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proxied_functions = ("get", "post")
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def __init__(self):
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super(RetryingSession, self).__init__()
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self.verify = pem_file
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proxy = os.environ.get('SZ_HTTP_PROXY')
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if proxy:
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self.proxies = {
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"http": proxy,
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"https": proxy
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}
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def retry_method(self, method, *args, **kwargs):
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if self.proxies:
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# fixme: may be a little loud
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logger.debug("Using proxy %s for: %s", self.proxies["http"], args[0])
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return retry_call(getattr(super(RetryingSession, self), method), fargs=args, fkwargs=kwargs, tries=3, delay=5,
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exceptions=(exceptions.ConnectionError,
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exceptions.ProxyError,
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exceptions.SSLError,
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exceptions.Timeout,
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exceptions.ConnectTimeout,
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exceptions.ReadTimeout,
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socket.timeout))
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def get(self, *args, **kwargs):
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return self.retry_method("get", *args, **kwargs)
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def post(self, *args, **kwargs):
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return self.retry_method("post", *args, **kwargs)
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class TimeoutTransport(Transport):
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"""Timeout support for ``xmlrpc.client.SafeTransport``."""
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def __init__(self, timeout, *args, **kwargs):
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Transport.__init__(self, *args, **kwargs)
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self.timeout = timeout
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def make_connection(self, host):
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c = Transport.make_connection(self, host)
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c.timeout = self.timeout
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return c
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class SubZeroTransport(SafeTransport):
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"""
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Timeout and proxy support for ``xmlrpc.client.(Safe)Transport``
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"""
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def __init__(self, timeout, url, *args, **kwargs):
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SafeTransport.__init__(self, *args, **kwargs)
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self.timeout = timeout
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self.host = None
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self.proxy = None
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self.scheme = url.split('://', 1)[0]
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self.https = url.startswith('https')
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self.proxy = os.environ.get('SZ_HTTP_PROXY')
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if self.https:
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self.context = default_ssl_context
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if self.proxy:
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logger.debug("Using proxy %s for: %s", self.proxy, url)
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self.https = self.proxy.startswith('https')
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def make_connection(self, host):
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self.host = host
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if self.proxy:
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host = self.proxy.split('://', 1)[-1]
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if self.https:
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c = SafeTransport.make_connection(self, host)
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else:
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c = Transport.make_connection(self, host)
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c.timeout = self.timeout
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return c
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def send_request(self, connection, handler, request_body):
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handler = '%s://%s%s' % (self.scheme, self.host, handler)
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Transport.send_request(self, connection, handler, request_body)
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