pinchflat/lib/pinchflat/fast_indexing/fast_indexing_worker.ex
Kieran 94c0cf9970
[Enhancement] Show currently executing jobs on homepage (#250)
* [WIP] Added PoC job table

* [WIP] hooked up tasks table with real data

* Added reload on websocket command

* Hooked it all up to a websocket
2024-05-17 10:55:27 -07:00

86 lines
3.1 KiB
Elixir

defmodule Pinchflat.FastIndexing.FastIndexingWorker do
@moduledoc false
use Oban.Worker,
queue: :fast_indexing,
unique: [period: :infinity, states: [:available, :scheduled, :retryable]],
tags: ["media_source", "fast_indexing", "show_in_dashboard"]
require Logger
alias __MODULE__
alias Pinchflat.Tasks
alias Pinchflat.Media
alias Pinchflat.Sources
alias Pinchflat.Settings
alias Pinchflat.Sources.Source
alias Pinchflat.FastIndexing.FastIndexingHelpers
alias Pinchflat.Lifecycle.Notifications.SourceNotifications
@doc """
Starts the source fast indexing worker and creates a task for the source.
Returns {:ok, %Task{}} | {:error, :duplicate_job} | {:error, %Ecto.Changeset{}}
"""
def kickoff_with_task(source, opts \\ []) do
%{id: source.id}
|> FastIndexingWorker.new(opts)
|> Tasks.create_job_with_task(source)
end
@doc """
Similar to `MediaCollectionIndexingWorker`, but for working with RSS feeds.
`MediaCollectionIndexingWorker` should be preferred in general, but this is
useful for downloading small batches of media items via fast indexing.
Only kicks off downloads for media that _should_ be downloaded
(ie: the source is set to download and the media matches the profile's format preferences)
Order of operations:
1. FastIndexingWorker (this module) periodically checks the YouTube RSS feed for new media.
with `FastIndexingHelpers.kickoff_download_tasks_from_youtube_rss_feed`
2. If the above `kickoff_download_tasks_from_youtube_rss_feed` finds new media items in the RSS feed,
it indexes them with a yt-dlp call to create the media item records then kicks off downloading
tasks (MediaDownloadWorker) for any new media items _that should be downloaded_.
3. Once downloads are kicked off, this worker sends a notification to the apprise server if applicable
then reschedules itself to run again in the future.
Returns :ok | {:ok, :job_exists} | {:ok, %Task{}}
"""
@impl Oban.Worker
def perform(%Oban.Job{args: %{"id" => source_id}}) do
source = Sources.get_source!(source_id)
if source.fast_index do
perform_indexing_and_send_notification(source)
reschedule_indexing(source)
else
:ok
end
rescue
Ecto.NoResultsError -> Logger.info("#{__MODULE__} discarded: source #{source_id} not found")
Ecto.StaleEntryError -> Logger.info("#{__MODULE__} discarded: source #{source_id} stale")
end
defp perform_indexing_and_send_notification(source) do
apprise_server = Settings.get!(:apprise_server)
new_media_items =
source
|> FastIndexingHelpers.kickoff_download_tasks_from_youtube_rss_feed()
|> Enum.filter(&Media.pending_download?(&1))
if source.download_media do
SourceNotifications.send_new_media_notification(apprise_server, source, length(new_media_items))
end
end
defp reschedule_indexing(source) do
next_run_in = Source.fast_index_frequency() * 60
case kickoff_with_task(source, schedule_in: next_run_in) do
{:ok, task} -> {:ok, task}
{:error, :duplicate_job} -> {:ok, :job_exists}
end
end
end