soundtrackyourbrand/absinthe-throttle

A pluggable throttling middleware for concurrent Absinthe queries

AbsintheThrottle

An Absinthe pipeline phase to throttle the number of queries that are resolved simultaneously.

defmodule MyApp.Throttler do
  use AbsintheThrottle,
      adapter: AbsintheThrottle.Adapter.Semaphore,
      arguments: [name: :resolve,
                  size: 1,
                  error: {:error, message: :custom_error, code: 123}]
end


defmodule MyApp.Router do
  # ...
  plug Absinthe.Plug,
       schema: MyApp.Schema,
       pipeline: {MyApp.Throttler.Plug, :pipeline}
  # ...
end

# or

"""
{
  document {
    id
  }
}
"""
|>  Absinthe.Pipeline.run(MyApp.Throttler.pipeline(MyApp.Schema))

Custom throttlers

You can implement a custom throttler using any throttling mechanism by implementing the transaction/2 callback, see: AbsintheThrottle.Adapter.Semaphore.

Installation

If available in Hex, the package can be installed by adding absinthe_throttle to your list of dependencies in mix.exs:

def deps do
  [
    {:absinthe_throttle, "~> 0.4.0"}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/absinthe_throttle.