Elastic-transport

Fixed

- Fixed `Urllib3HttpNode` and `RequestsHttpNode` to never require a valid certificate chain when using `ssl_assert_fingerprint`. Instead the internal HTTP client libraries will explicitly disable verifying the certificate chain and instead rely only on the certificate fingerprint for verification.

Fixed

- Fixed `AiohttpHttpNode` to close TLS connections that aren't properly shutdown by the server instead of leaking them
- Fixed `Urllib3HttpNode` to respect `path_prefix` setting in `NodeConfig`

Added

- Added support for asyncio with `AsyncTransport` and `AiohttpHttpNode`
- Added `JsonSerializer`, `NdjsonSerializer`
- Added `connections_per_node` parameter to `RequestsHttpNode`
- Added support for `ssl_assert_fingerprint` to `RequestsHttpNode`
- Added **experimental** support for pinning non-leaf certificates
via `ssl_assert_fingerprint` when using CPython 3.10+
- Added support for node discovery via "sniffing" using the
`sniff_callback` transport parameter
- Added ability to specify `ssl_version` via `ssl.TLSVersion` enum
instead of `ssl.PROTOCOL_TLSvX` for Python 3.7+
- Added `elastic_transport.client_utils` module to help writing API clients
- Added `elastic_transport.debug_logging` method to enable all logging for debugging purposes
- Added option to set `requests.Session.auth` within `RequestsHttpNode` via `NodeConfig._extras['requests.session.auth']`

Changed

- Changed `*Connection` classes to use `*Node` terminology
- Changed `connection_class` to `node_class`
- Changed `ConnectionPool` to `NodePool`
- Changed `ConnectionSelector` to `NodeSelector`
- Changed `NodeSelector(randomize_hosts)` parameter to `randomize_nodes`
- Changed `NodeSelector.get_connection()` method to `get()`
- Changed `elastic_transport.connection` logger name to `elastic_transport.node`
- Changed `Urllib3HttpNode(connections_per_host)` parameter to `connections_per_node`
- Changed return type of `BaseNode.perform_request()` to `NamedTuple(meta=ApiResponseMeta, body=bytes)`
- Changed return type of `Transport.perform_request()` to `NamedTuple(meta=ApiResponseMeta, body=Any)`
- Changed name of `Deserializer` into `SerializersCollection`
- Changed `ssl_version` to denote the minimum TLS version instead of the only TLS version
- Changed the base class for `ApiError` to be `Exception` instead of `TransportError`.
`TransportError` is now only for errors that occur at the transport layer.
- Changed `Urllib3HttpNode` to block on new connections when the internal connection pool is exhausted

Removed

- Removed support for Python 2.7
- Removed `DummyConnectionPool` and `EmptyConnectionPool` in favor of `NodePool`.

Fixed

- Fixed a work-around with `AiohttpHttpNode` where `method="HEAD"` requests wouldn't mark the internal connection as reusable. This work-around is no longer needed when `aiohttp>=3.7.0` is installed.
- Fixed logic for splitting `aiohttp.__version__` when determining if `HEAD` bug is fixed.

Release created to be compatible with 7.15 clients

Release created to be compatible with 7.14 clients

Release created to be compatible with 7.13 clients