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import time
import warnings
try:
import requests
REQUESTS_AVAILABLE = True
except ImportError:
REQUESTS_AVAILABLE = False
from .base import Connection
from ..exceptions import ConnectionError, ImproperlyConfigured, ConnectionTimeout, SSLError
from ..compat import urlencode
class RequestsHttpConnection(Connection):
"""
Connection using the `requests` library.
: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. By default standard requests'
bundle will be used.
:arg client_cert: path to the file containing the private key and the
certificate
"""
def __init__(self, host='localhost', port=9200, http_auth=None,
use_ssl=False, verify_certs=False, ca_certs=None, client_cert=None,
**kwargs):
if not REQUESTS_AVAILABLE:
raise ImproperlyConfigured("Please install requests to use RequestsHttpConnection.")
super(RequestsHttpConnection, self).__init__(host= host, port=port, **kwargs)
self.session = requests.session()
if http_auth is not None:
if not isinstance(http_auth, (tuple, list)):
http_auth = http_auth.split(':', 1)
http_auth = tuple(http_auth)
self.session.auth = http_auth
self.base_url = 'http%s://%s:%d%s' % (
's' if use_ssl else '',
host, port, self.url_prefix
)
self.session.verify = verify_certs
self.session.cert = client_cert
if ca_certs:
if not verify_certs:
raise ImproperlyConfigured("You cannot pass CA certificates when verify SSL is off.")
self.session.verify = ca_certs
if use_ssl and not verify_certs:
warnings.warn(
'Connecting to %s using SSL with verify_certs=False is insecure.' % self.base_url)
def perform_request(self, method, url, params=None, body=None, timeout=None, ignore=()):
url = self.base_url + url
if params:
url = '%s?%s' % (url, urlencode(params or {}))
start = time.time()
try:
response = self.session.request(method, url, data=body, timeout=timeout or self.timeout)
duration = time.time() - start
raw_data = response.text
except requests.exceptions.SSLError as e:
self.log_request_fail(method, url, body, time.time() - start, exception=e)
raise SSLError('N/A', str(e), e)
except requests.Timeout as e:
self.log_request_fail(method, url, body, time.time() - start, exception=e)
raise ConnectionTimeout('TIMEOUT', str(e), e)
except requests.ConnectionError as e:
self.log_request_fail(method, url, body, time.time() - start, exception=e)
raise ConnectionError('N/A', str(e), e)
# raise errors based on http status codes, let the client handle those if needed
if not (200 <= response.status_code < 300) and response.status_code not in ignore:
self.log_request_fail(method, url, body, duration, response.status_code)
self._raise_error(response.status_code, raw_data)
self.log_request_success(method, url, response.request.path_url, body, response.status_code, raw_data, duration)
return response.status_code, response.headers, raw_data
|
