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push_ex

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PushEx is an implementation of Phoenix websockets/channels which handles best practices of running websockets for you, but allows your business logic to be specified through simple behaviour modules.

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push_ex lib push_ex instrumentation supervisor.ex
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lib/push_ex/instrumentation/supervisor.ex 

defmodule PushEx.Instrumentation.Supervisor do

  @moduledoc false



  use Supervisor



  alias PushEx.Instrumentation.Shard



  def shard_for_time(time, opts \\ []) when time >= 0 do

    prefix = Keyword.get(opts, :prefix, Shard)

    num_shards = Keyword.get(opts, :pool_size, pool_size())



    time

    |> rem(num_shards)

    |> Shard.name_for_number(prefix)

    |> Process.whereis()

  end



  def start_link(opts) do

    Supervisor.start_link(__MODULE__, opts)

  end



  def init(opts) do

    shard_prefix = Keyword.get(opts, :prefix, Shard)

    num_shards = Keyword.get(opts, :pool_size, pool_size())



    shards =

      for n <- 0..(num_shards - 1) do

        shard_name = Shard.name_for_number(n, shard_prefix)

        worker(Shard, [[name: shard_name]], id: shard_name)

      end



    supervise(shards, strategy: :one_for_one)

  end



  defp pool_size(), do: PushEx.Application.pool_size()

end