index.community/backend/lib/backend/application.ex

47 lines
1.4 KiB
Elixir

defmodule Backend.Application do
# See https://hexdocs.pm/elixir/Application.html
# for more information on OTP Applications
@moduledoc false
use Application
require Logger
import Backend.Util
def start(_type, _args) do
crawl_worker_count = get_config(:crawl_workers)
children = [
# Start the Ecto repository
Backend.Repo,
# Start the endpoint when the application starts
BackendWeb.Endpoint,
# Crawler children
:hackney_pool.child_spec(:crawler, timeout: 15000, max_connections: crawl_worker_count),
{Task,
fn ->
Honeydew.start_queue(:crawl_queue, failure_mode: Honeydew.FailureMode.Abandon)
Honeydew.start_workers(:crawl_queue, Backend.Crawler, num: crawl_worker_count)
end},
Backend.Scheduler
]
children =
case Enum.member?(["true", 1, "1"], System.get_env("SKIP_CRAWL")) do
true -> children
false -> children ++ [Backend.Crawler.StaleInstanceManager]
end
# See https://hexdocs.pm/elixir/Supervisor.html
# for other strategies and supported options
opts = [strategy: :one_for_one, name: Backend.Supervisor]
Supervisor.start_link(children, opts)
end
# Tell Phoenix to update the endpoint configuration
# whenever the application is updated.
def config_change(changed, _new, removed) do
BackendWeb.Endpoint.config_change(changed, removed)
:ok
end
end