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gRPC client implementation for Elixir

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grpc lib grpc client adapter.ex
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lib/grpc/client/adapter.ex 

defmodule GRPC.Client.Adapter do

  @moduledoc """

  HTTP client adapter for GRPC.

  """



  alias GRPC.Client.Stream

  alias GRPC.Channel



  @typedoc "Determines if the headers have finished being read."

  @type fin :: :fin | :nofin



  @callback connect(Channel.t(), map()) :: {:ok, Channel.t()} | {:error, any()}



  @callback disconnect(Channel.t()) :: {:ok, Channel.t()} | {:error, any()}



  @callback send_request(Stream.t(), binary(), map()) :: Stream.t()



  @callback recv_headers(map(), map(), map()) ::

              {:ok, %{String.t() => String.t()}, fin()} | {:error, GRPC.RPCError.t()}



  @callback recv_data_or_trailers(map(), map(), map()) ::

              {:data, binary()} | {:trailers, binary()} | {:error, GRPC.RPCError.t()}

end