Nick Lang
68 lines
2.6 KiB
ReStructuredText
68 lines
2.6 KiB
ReStructuredText
.. _connection_api:
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Connection Layer API
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====================
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All of the classes responsible for handling the connection to the Elasticsearch
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cluster. The default subclasses used can be overriden by passing parameters to the
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:class:`~elasticsearch.Elasticsearch` class. All of the arguments to the client
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will be passed on to :class:`~elasticsearch.Transport`,
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:class:`~elasticsearch.ConnectionPool` and :class:`~elasticsearch.Connection`.
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For example if you wanted to use your own implementation of the
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:class:`~elasticsearch.ConnectionSelector` class you can just pass in the
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``selector_class`` parameter.
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.. note::
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:class:`~elasticsearch.ConnectionPool` and related options (like
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``selector_class``) will only be used if more than one connection is defined.
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Either directly or via the :ref:`sniffing` mechanism.
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.. py:module:: elasticsearch
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Transport
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---------
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.. autoclass:: Transport(hosts, connection_class=Urllib3HttpConnection, connection_pool_class=ConnectionPool, nodes_to_host_callback=construct_hosts_list, sniff_on_start=False, sniffer_timeout=None, sniff_on_connection_fail=False, serializer=JSONSerializer(), max_retries=3, ** kwargs)
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:members:
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Connection Pool
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---------------
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.. autoclass:: ConnectionPool(connections, dead_timeout=60, selector_class=RoundRobinSelector, randomize_hosts=True, ** kwargs)
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:members:
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Connection Selector
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-------------------
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.. autoclass:: ConnectionSelector(opts)
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:members:
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Urllib3HttpConnection (default connection_class)
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------------------------------------------------
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Deprecation Notice: `use_ssl`, `verify_certs`, `ca_certs` and `ssl_version` are being
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deprecated in favor of using a `SSLContext` (https://docs.python.org/3/library/ssl.html#ssl.SSLContext) object.
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You can continue to use the deprecated parameters and an `SSLContext` will be created for you.
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If you want to create your own `SSLContext` object you can create one natively using the
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python SSL library with the `create_default_context` (https://docs.python.org/3/library/ssl.html#ssl.create_default_context) method
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or you can use the wrapper function :function:`~elasticsearch.connection.http_urllib3.create_ssl_context`.
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To create an `SSLContext` object you only need to use one of cafile, capath or cadata::
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>>> from elasticsearch.connection import create_ssl_context
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>>> context = create_ssl_context(cafile=None, capath=None, cadata=None)
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* `cafile` is the path to your CA File
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* `capath` is the directory of a collection of CA's
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* `cadata` is either an ASCII string of one or more PEM-encoded certificates or a bytes-like object of DER-encoded certificates.
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.. autoclass:: Urllib3HttpConnection
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:members:
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