towerops/lib/towerops/workers/preseem_sync_worker.ex
2026-06-14 16:38:03 -05:00

94 lines
3 KiB
Elixir

defmodule Towerops.Workers.PreseemSyncWorker do
@moduledoc """
Oban worker that syncs Preseem data for enabled integrations.
The cron job (no args) runs every 10 minutes and dispatches individual
per-integration sync jobs staggered across the 600-second window using
`PollingOffset.calculate_offset/2`. This prevents a thundering herd
against the Preseem API.
Individual jobs receive `%{"integration_id" => id}` and perform the
actual sync via `Preseem.Sync.sync_organization/1`.
"""
use Oban.Pro.Worker, queue: :maintenance
alias Towerops.Integrations
alias Towerops.Preseem.Sync
alias Towerops.Workers.PollingOffset
alias Towerops.Workers.SyncErrors
require Logger
@window_seconds 600
# Cron dispatcher: enqueues staggered individual sync jobs
@impl Oban.Worker
def perform(%Oban.Job{args: args}) when args == %{} do
integrations = Integrations.list_enabled_integrations("preseem")
eligible = Enum.filter(integrations, &should_sync?/1)
now = DateTime.utc_now()
enqueued =
Enum.count(eligible, fn integration ->
offset = PollingOffset.calculate_offset(integration.organization_id, @window_seconds)
scheduled_at = DateTime.add(now, offset, :second)
case %{"integration_id" => integration.id}
|> new(scheduled_at: scheduled_at, unique: [period: @window_seconds])
|> Oban.insert() do
{:ok, _job} -> true
{:error, _reason} -> false
end
end)
if enqueued > 0 do
Logger.info("Preseem sync: dispatched #{enqueued} jobs across #{@window_seconds}s window")
end
:ok
end
# Individual sync: loads integration by ID and syncs
def perform(%Oban.Job{args: %{"integration_id" => id}}) do
case Integrations.get_integration_by_id(id) do
{:ok, integration} ->
sync_integration(integration)
{:error, :not_found} ->
Logger.warning("Preseem sync: integration #{id} not found, skipping")
{:error, :not_found}
end
end
defp sync_integration(integration) do
case Sync.sync_organization(integration) do
{:ok, result} ->
Logger.info("Preseem sync completed for org #{integration.organization_id}: #{inspect(result)}")
:ok
{:error, reason} ->
Logger.error("Preseem sync failed for org #{integration.organization_id}: #{inspect(reason)}")
# Distinguish permanent failures (auth, bad config) from transient
# ones (network, rate limits, 5xx) so Oban retries the latter —
# stale monitoring data is worse than a redundant retry on a
# permanent failure.
if SyncErrors.transient?(reason), do: {:error, reason}, else: :ok
end
end
defp should_sync?(integration) do
case integration.last_synced_at do
nil ->
true
last_synced_at ->
interval_seconds = (integration.sync_interval_minutes || 10) * 60
elapsed = DateTime.diff(DateTime.utc_now(), last_synced_at, :second)
elapsed >= interval_seconds
end
end
end