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dynamic_supervisor_proxy
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Starts a module-based dynamic supervisor process with a registered name. Will wait a bit if the supervisor name is still registered on restarts.
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lib/dynamic_supervisor/proxy.ex
defmodule DynamicSupervisor.Proxy do
@supervisor_restart_backoff "https://github.com/erlang/otp/pull/1287"
@moduledoc """
Starts a module-based dynamic supervisor process with a registered name.
Will wait a bit if the supervisor name is still registered on restarts. See
[Supervisor restart backoff](#{@supervisor_restart_backoff}).
"""
@doc """
Uses `DynamicSupervisor`. Also either aliases `DynamicSupervisor.Proxy` (this
module) and requires the alias or imports `DynamicSupervisor.Proxy`.
## Examples
use DynamicSupervisor.Proxy, alias: Proxy
use DynamicSupervisor.Proxy
"""
defmacro __using__(options) do
alias = options[:alias]
if alias do
quote do
use DynamicSupervisor
alias unquote(__MODULE__), as: unquote(alias)
require unquote(alias)
end
else
quote do
use DynamicSupervisor
import unquote(__MODULE__)
end
end
end
@doc """
Starts a module-based dynamic supervisor process with the given `module` and
`init_arg`. The `:name` option __must__ be given in order to register a
supervisor name. Will wait a bit if the supervisor name is still registered
on restarts. See [Supervisor restart backoff](#{@supervisor_restart_backoff}).
To start the supervisor, the `c:DynamicSupervisor.init/1` callback will be
invoked in the given `module`, with `init_arg` as its argument. The
`c:DynamicSupervisor.init/1` callback must return a supervisor specification
which can be created with the help of the `DynamicSupervisor.init/1` function.
## Examples
use DynamicSupervisor.Proxy
@spec start_link(term) :: Supervisor.on_start()
def start_link(:ok), do: start_link(__MODULE__, :ok, name: __MODULE__)
@spec init(term) :: {:ok, DynamicSupervisor.sup_flags()} | :ignore
def init(:ok), do: DynamicSupervisor.init(strategy: :one_for_one)
"""
defmacro start_link(module, init_arg, opts) do
quote bind_quoted: [mod: module, arg: init_arg, opts: opts] do
DynamicSupervisor.Proxy.Starter.start_link(mod, arg, opts)
end
end
end