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import time
import urllib3
from urllib3.exceptions import ReadTimeoutError, SSLError as UrllibSSLError
import warnings
from .base import Connection
from ..exceptions import ConnectionError, ImproperlyConfigured, ConnectionTimeout, SSLError
from ..compat import urlencode
class Urllib3HttpConnection(Connection):
"""
Default connection class using the `urllib3` library and the http protocol.
:arg http_auth: optional http auth information as either ':' separated
string or a tuple
:arg use_ssl: use ssl for the connection if `True`
:arg verify_certs: whether to verify SSL certificates
:arg ca_certs: optional path to CA bundle. See
http://urllib3.readthedocs.org/en/latest/security.html#using-certifi-with-urllib3
for instructions how to get default set
:arg client_cert: path to the file containing the private key and the
certificate
:arg maxsize: the maximum number of connections which will be kept open to
this host.
"""
def __init__(self, host='localhost', port=9200, http_auth=None,
use_ssl=False, verify_certs=False, ca_certs=None, client_cert=None,
maxsize=10, **kwargs):
super(Urllib3HttpConnection, self).__init__(host=host, port=port, **kwargs)
self.headers = {}
if http_auth is not None:
if isinstance(http_auth, (tuple, list)):
http_auth = ':'.join(http_auth)
self.headers = urllib3.make_headers(basic_auth=http_auth)
pool_class = urllib3.HTTPConnectionPool
kw = {}
if use_ssl:
pool_class = urllib3.HTTPSConnectionPool
if verify_certs:
kw['cert_reqs'] = 'CERT_REQUIRED'
kw['ca_certs'] = ca_certs
kw['cert_file'] = client_cert
elif ca_certs:
raise ImproperlyConfigured("You cannot pass CA certificates when verify SSL is off.")
else:
warnings.warn(
'Connecting to %s using SSL with verify_certs=False is insecure.' % host)
self.pool = pool_class(host, port=port, timeout=self.timeout, maxsize=maxsize, **kw)
def perform_request(self, method, url, params=None, body=None, timeout=None, ignore=()):
url = self.url_prefix + url
if params:
url = '%s?%s' % (url, urlencode(params))
full_url = self.host + url
start = time.time()
try:
kw = {}
if timeout:
kw['timeout'] = timeout
# in python2 we need to make sure the url is not unicode. Otherwise
# the body will be decoded into unicode too and that will fail (#133).
if not isinstance(url, str):
url = url.encode('utf-8')
response = self.pool.urlopen(method, url, body, retries=False, headers=self.headers, **kw)
duration = time.time() - start
raw_data = response.data.decode('utf-8')
except UrllibSSLError as e:
self.log_request_fail(method, full_url, body, time.time() - start, exception=e)
raise SSLError('N/A', str(e), e)
except ReadTimeoutError as e:
self.log_request_fail(method, full_url, body, time.time() - start, exception=e)
raise ConnectionTimeout('TIMEOUT', str(e), e)
except Exception as e:
self.log_request_fail(method, full_url, body, time.time() - start, exception=e)
raise ConnectionError('N/A', str(e), e)
if not (200 <= response.status < 300) and response.status not in ignore:
self.log_request_fail(method, url, body, duration, response.status)
self._raise_error(response.status, raw_data)
self.log_request_success(method, full_url, url, body, response.status,
raw_data, duration)
return response.status, response.getheaders(), raw_data
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