GenQueue Faktory
This is an adapter for GenQueue to enable functionaility with Faktory.
Installation
The package can be installed by adding gen_queue_faktory
to your list of dependencies in mix.exs
:
def deps do
[
{:gen_queue_faktory, "~> 0.1.0"}
]
end
Documentation
See HexDocs for additional documentation.
Configuration
Before starting, please refer to the Faktory documentation
for details on configuration. This adapter handles zero Faktory
related config.
Creating Enqueuers
We can start off by creating a new GenQueue
module, which we will use to push jobs to
OPQ.
defmodule Enqueuer do
use GenQueue, otp_app: :my_app
end
Once we have our module setup, ensure we have our config pointing to the GenQueue.Adapters.Faktory
adapter.
config :my_app, Enqueuer, [
adapter: GenQueue.Adapters.Faktory
]
Starting Enqueuers
By default, gen_queue_faktory
does not start Faktory on application start. So we must add
our new Enqueuer
module to our supervision tree.
children = [
supervisor(Enqueuer, []),
]
Creating Jobs
Jobs are simply modules with a perform
method. With Faktory
we must add use Faktory.Job
to our jobs.
defmodule MyJob do
use Faktory.Job
def perform(arg1) do
IO.inspect(arg1)
end
end
Enqueuing Jobs
We can now easily enqueue jobs to Faktory
. The adapter will handle a variety of argument formats.
# Push MyJob to queue
{:ok, job} = Enqueuer.push(MyJob)
# Push MyJob to queue
{:ok, job} = Enqueuer.push({MyJob})
# Push MyJob to queue with "arg1"
{:ok, job} = Enqueuer.push({MyJob, "arg1"})
# Push MyJob to queue with no args
{:ok, job} = Enqueuer.push({MyJob, []})
# Push MyJob to queue with "arg1" and "arg2"
{:ok, job} = Enqueuer.push({MyJob, ["arg1", "arg2"]})
Testing
Optionally, we can also have our tests use the GenQueue.Adapters.MockJob
adapter.
config :my_app, Enqueuer, [
adapter: GenQueue.Adapters.MockJob
]
This mock adapter uses the standard GenQueue.Test
helpers to send the job payload
back to the current processes mailbox (or another named process) instead of actually
enqueuing the job to OPQ.
defmodule MyJobTest do
use ExUnit.Case, async: true
import GenQueue.Test
setup do
setup_test_queue(Enqueuer)
end
test "my enqueuer works" do
{:ok, _} = Enqueuer.push(MyJob)
assert_receive(%GenQueue.Job{module: MyJob, args: []})
end
end
If your jobs are being enqueued outside of the current process, we can use named processes to recieve the job. This wont be async safe.
import GenQueue.Test
setup do
setup_global_test_queue(Enqueuer, :my_process_name)
end