RanchConnectionDrainer

This mini library implements connection draining for servers that use Ranch (Cowboy, Plug, Phoenix, and maybe others).

Installation

This package can be installed by adding ranch_connection_drainer to your list of dependencies in mix.exs:

def deps do
  [
    {:ranch_connection_drainer, "~> 0.1.0"}
  ]
end

Then add {RanchConnectionDrainer, ranch_ref: my_ranch_ref, shutdown: my_drain_timeout} to your application supervisor directly under your phoenix endpoint.

Example:

children = [
  MyPhoenixProject.Endpoint,
  {RanchConnectionDrainer, ranch_ref: MyPhoenixProject.Endpoint.HTTP, shutdown: 30_000}
]
Supervisor.init(children, opts)

The format of ranch_ref is: [PhoenixEndpoint].[HTTP | HTTPS]. Please open an issue if this is unclear.