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db_connection
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Database connection behaviour for database transactions and connection pooling
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lib/db_connection/watcher.ex
defmodule DBConnection.Watcher do
@moduledoc false
use GenServer
def start_link(owner) do
GenServer.start_link(__MODULE__, owner)
end
def init(owner) do
ref = Process.monitor(owner)
try do
Process.link(owner)
catch
:error, :noproc ->
{:stop, {:shutdown, :noproc}}
else
_ ->
{:ok, ref}
end
end
def handle_info({:DOWN, ref, _, _, reason}, ref) do
{:stop, {:shutdown, reason}, ref}
end
def handle_info(_, ref) do
{:noreply, ref}
end
end