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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, string_types
class RequestsHttpConnection(Connection):
"""
Connection using the `requests` library.
:arg http_auth: optional http auth information as either ':' separated
string or a tuple. Any value will be passed into requests as `auth`.
: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, or cert only if using client_key
:arg client_key: path to the file containing the private key if using
separate cert and key files (client_cert will contain only the cert)
:arg headers: any custom http headers to be add to requests
"""
def __init__(self, host='localhost', port=9200, http_auth=None,
use_ssl=False, verify_certs=True, ca_certs=None, client_cert=None,
client_key=None, headers=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()
self.session.headers = headers
if http_auth is not None:
if isinstance(http_auth, (tuple, list)):
http_auth = tuple(http_auth)
elif isinstance(http_auth, string_types):
http_auth = tuple(http_auth.split(':', 1))
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
if not client_key:
self.session.cert = client_cert
elif client_cert:
# cert is a tuple of (certfile, keyfile)
self.session.cert = (client_cert, client_key)
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, response.request.path_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, response.request.path_url, body, time.time() - start, exception=e)
raise ConnectionTimeout('TIMEOUT', str(e), e)
except requests.ConnectionError as e:
self.log_request_fail(method, url, response.request.path_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, response.request.path_url, body, duration, response.status_code, raw_data)
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
def close(self):
"""
Explicitly closes connections
"""
self.session.close()
|
