pyarrow.flight.ClientMiddlewareFactory

class pyarrow.flight.ClientMiddlewareFactory

Bases: pyarrow.lib._Weakrefable

A factory for new middleware instances.

All middleware methods will be called from the same thread as the RPC method implementation. That is, thread-locals set in the client are accessible from the middleware itself.

__init__(*args, **kwargs)

Methods

__init__(*args, **kwargs)
start_call(self, info)	Called at the start of an RPC.

start_call(self, info)

Called at the start of an RPC.

This must be thread-safe and must not raise exceptions.

Parameters

infoCallInfo

Information about the call.

Returns

instanceClientMiddleware

An instance of ClientMiddleware (the instance to use for the call), or None if this call is not intercepted.

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