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lib/exq.ex

defmodule Exq do
require Logger
use Application
# Mixin Enqueue API
use Exq.Enqueuer.EnqueueApi
# OTP Application
def start(_type, _args) do
Exq.Manager.Supervisor.start_link
end
# Exq methods
def start(opts \\ []) do
Exq.Manager.Supervisor.start_link(opts)
end
def start_link(opts \\ []) do
Exq.Manager.Supervisor.start_link(opts)
end
def stop(pid) when is_pid(pid) do
Process.exit(pid, :shutdown)
end
def stop(name) when is_atom(name) do
case Process.whereis(Exq.Manager.Supervisor.supervisor_name(name)) do
nil -> :ok
pid ->
stop(pid)
end
end
@doc """
Subscribe to a queue - ie. listen to queue for jobs
* `pid` - PID for Exq Manager or Enqueuer to handle this
* `queue` - Name of queue
* `concurrency` - Optional argument specifying max concurrency for queue
"""
def subscribe(pid, queue) do
GenServer.call(pid, {:subscribe, queue})
end
def subscribe(pid, queue, concurrency) do
GenServer.call(pid, {:subscribe, queue, concurrency})
end
@doc """
Unsubscribe from a queue - ie. stop listening to queue for jobs
* `pid` - PID for Exq Manager or Enqueuer to handle this
* `queue` - Name of queue
"""
def unsubscribe(pid, queue) do
GenServer.call(pid, {:unsubscribe, queue})
end
end