All of the classes responsible for handling the connection to the Elasticsearch cluster. The default subclasses used can be overriden by passing parameters to the :class:`~elasticsearch.Elasticsearch` class. All of the arguments to the client will be passed on to :class:`~elasticsearch.Transport`, :class:`~elasticsearch.ConnectionPool` and :class:`~elasticsearch.Connection`.
For example if you wanted to use your own implementation of the
:class:`~elasticsearch.ConnectionSelector` class you can just pass in the
selector_class
parameter.
Note
:class:`~elasticsearch.ConnectionPool` and related options (like
selector_class
) will only be used if more than one connection is defined.
Either directly or via the :ref:`sniffing` mechanism.
.. py:module:: elasticsearch
.. autoclass:: Transport(hosts, connection_class=Urllib3HttpConnection, connection_pool_class=ConnectionPool, host_info_callback=construct_hosts_list, sniff_on_start=False, sniffer_timeout=None, sniff_on_connection_fail=False, serializer=JSONSerializer(), max_retries=3, ** kwargs) :members:
.. autoclass:: ConnectionPool(connections, dead_timeout=60, selector_class=RoundRobinSelector, randomize_hosts=True, ** kwargs) :members:
.. autoclass:: ConnectionSelector(opts) :members:
If you have complex SSL logic for connecting to Elasticsearch using an SSLContext object might be more helpful. You can create one natively using the python SSL library with the create_default_context (https://docs.python.org/3/library/ssl.html#ssl.create_default_context) method.
To create an SSLContext object you only need to use one of cafile, capath or cadata:
>>> from ssl import create_default_context
>>> context = create_default_context(cafile=None, capath=None, cadata=None)
- cafile is the path to your CA File
- capath is the directory of a collection of CA's
- cadata is either an ASCII string of one or more PEM-encoded certificates or a bytes-like object of DER-encoded certificates.
Please note that the use of SSLContext is only available for Urllib3.
.. autoclass:: Urllib3HttpConnection :members: