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lib/kaffe/group_member/worker/worker_supervisor.ex
defmodule Kaffe.WorkerSupervisor do
@moduledoc """
Supervise the individual workers.
"""
use Supervisor
require Logger
def start_link(subscriber_name) do
Supervisor.start_link(__MODULE__, subscriber_name, name: name(subscriber_name))
end
def start_worker_manager(pid, subscriber_name) do
Supervisor.start_child(pid, worker(Kaffe.WorkerManager, [subscriber_name]))
end
def start_worker(pid, message_handler, subscriber_name, worker_name) do
Logger.debug "Starting worker: #{worker_name}"
Supervisor.start_child(pid,
worker(Kaffe.Worker, [message_handler, subscriber_name, worker_name],
id: :"worker_#{subscriber_name}_#{worker_name}"))
end
def init(subscriber_name) do
Logger.info "event#startup=#{__MODULE__} subscriber_name=#{subscriber_name}"
children = [
]
# If anything fails, the state is inconsistent with the state of
# `Kaffe.Subscriber` and `Kaffe.GroupMember`. We need the failure
# to cascade all the way up so that they are terminated.
supervise(children, strategy: :one_for_all, max_restarts: 0, max_seconds: 1)
end
defp name(subscriber_name) do
:"worker_supervisor_#{subscriber_name}"
end
end