Packages
db_connection
0.2.5
2.10.2
2.10.1
2.10.0
2.9.0
2.8.1
2.8.0
2.7.0
2.6.0
2.5.0
2.4.3
2.4.2
2.4.1
2.4.0
2.3.1
2.3.0
2.2.2
2.2.1
2.2.0
2.1.1
2.1.0
2.0.6
2.0.5
2.0.4
2.0.3
2.0.2
2.0.1
2.0.0
2.0.0-rc.0
1.1.3
1.1.2
1.1.1
1.1.0
1.0.0
1.0.0-rc.5
1.0.0-rc.4
1.0.0-rc.3
1.0.0-rc.2
1.0.0-rc.1
1.0.0-rc.0
0.2.5
0.2.4
0.2.3
0.2.2
0.2.1
0.2.0
0.1.8
0.1.7
0.1.6
0.1.5
0.1.4
0.1.3
0.1.2
0.1.1
0.1.0
Database connection behaviour for database transactions and connection pooling
Current section
Files
Jump to
Current section
Files
lib/db_connection/task.ex
defmodule DBConnection.Task do
@moduledoc false
def start_link() do
Task.Supervisor.start_link([name: __MODULE__])
end
def run_child(mod, fun, state, opts) do
ref = make_ref()
arg = [mod, fun, ref, self(), state, opts]
{:ok, pid} = Task.Supervisor.start_child(__MODULE__, __MODULE__, :init, arg)
mon = Process.monitor(pid)
send(pid, {:go, ref, mon})
mon
end
def init(mod, fun, ref, conn, state, opts) do
Process.link(conn)
receive do
{:go, ^ref, mon} ->
Process.unlink(conn)
pool = {:via, __MODULE__, {{conn, mon}, mod, state}}
_ = DBConnection.run(pool, make(fun), [pool: __MODULE__] ++ opts)
exit(:normal)
end
end
def checkout({:via, __MODULE__, {info, mod, state}}, _) do
{:ok, info, mod, state}
end
defdelegate checkin(info, state, opts), to: DBConnection.Connection
defdelegate disconnect(info, err, state, opts), to: DBConnection.Connection
defdelegate stop(info, reason, state, opts), to: DBConnection.Connection
defp make(fun) when is_function(fun, 1) do
fun
end
defp make(mfargs) do
fn(conn) ->
{mod, fun, args} = mfargs
apply(mod, fun, [conn | args])
end
end
end