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16 lines
408 B
Elixir
16 lines
408 B
Elixir
defmodule LiveBeats.Repo do
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use Ecto.Repo,
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otp_app: :live_beats,
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adapter: Ecto.Adapters.Postgres
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@locks %{playlist: 1}
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def multi_transaction_lock(multi, scope, id) when is_atom(scope) and is_integer(id) do
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scope_int = Map.fetch!(@locks, scope)
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Ecto.Multi.run(multi, scope, fn repo, _changes ->
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repo.query("SELECT pg_advisory_xact_lock(#{scope_int}, #{id})")
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end)
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end
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end
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