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support for hostname config field #32

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support for hostname config field #32

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10 changes: 9 additions & 1 deletion lib/adapters/postgres.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -35,9 +35,17 @@ defmodule SQL.Adapters.Postgres do

def init(state) do
Process.flag(:trap_exit, true)
startup(state)
startup(resolve_addr(state))
end

defp resolve_addr(%{hostname: hostname, family: family} = state) when is_binary(hostname) and hostname != "" do
case :inet.getaddr(String.to_charlist(hostname), family) do
{:ok, addr} -> %{state | addr: addr}
{:error, _} -> state
end
end
defp resolve_addr(state), do: state

defp cancel(%{domain: domain, type: type, protocol: protocol, pid: pid, secret: secret} = state) do
{:ok, socket} = :socket.open(domain, type, protocol, Map.take(state, [:netns, :use_registry, :debug]))
for {level, opts} <- Map.take(state, [:tcp, :udp, :sctp, :ip, :ipv6, :otp, :socket]), {k, v} <- opts, do: :socket.setopt(socket, level, k, v)
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