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oban
2.23.0
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2.10.0
retired
2.9.2
2.9.1
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0.2.0
0.1.0
Robust job processing, backed by modern PostgreSQL, SQLite3, and MySQL.
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lib/oban/cron.ex
defmodule Oban.Cron do
@moduledoc false
alias Oban.Cron.Expression
@spec schedule_interval(pid(), term(), binary(), Calendar.time_zone()) :: :ok
def schedule_interval(pid, message, schedule, timezone \\ "Etc/UTC") do
:timer.apply_after(
interval_to_next_minute(),
__MODULE__,
:__schedule_interval__,
[pid, message, schedule, timezone]
)
:ok
end
@doc false
def __schedule_interval__(pid, message, schedule, timezone) do
exp = Expression.parse!(schedule)
now = DateTime.now!(timezone)
if Expression.now?(exp, now) do
send(pid, message)
end
schedule_interval(pid, message, schedule, timezone)
end
@spec interval_to_next_minute(Time.t()) :: pos_integer()
def interval_to_next_minute(time \\ Time.utc_now()) do
time
|> Time.add(60)
|> Map.put(:second, 0)
|> Time.diff(time)
|> Integer.mod(86_400)
|> :timer.seconds()
end
end