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erldns
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1.0.0
Erlang Authoritative DNS Server
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Files
src/erldns_config.erl
%% Copyright (c) 2012-2020, DNSimple Corporation
%%
%% Permission to use, copy, modify, and/or distribute this software for any
%% purpose with or without fee is hereby granted, provided that the above
%% copyright notice and this permission notice appear in all copies.
%%
%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-module(erldns_config).
-moduledoc "Provide application-wide configuration access.".
-export([
use_root_hints/0,
ingress_udp_request_timeout/0,
ingress_tcp_request_timeout/0
]).
-export([
keyget/2,
keyget/3
]).
-define(DEFAULT_UDP_PROCESS_TIMEOUT, 500).
-define(DEFAULT_TCP_PROCESS_TIMEOUT, 1000).
-spec use_root_hints() -> boolean().
use_root_hints() ->
case application:get_env(erldns, use_root_hints) of
{ok, Flag} ->
Flag;
_ ->
true
end.
-doc false.
keyget(Key, Data) ->
keyget(Key, Data, undefined).
-doc false.
keyget(Key, Data, Default) ->
case lists:keyfind(Key, 1, Data) of
false ->
Default;
{Key, Value} ->
Value
end.
-spec ingress_udp_request_timeout() -> non_neg_integer().
ingress_udp_request_timeout() ->
case application:get_env(erldns, ingress_udp_request_timeout) of
{ok, UdpTimeout} ->
UdpTimeout;
_ ->
?DEFAULT_UDP_PROCESS_TIMEOUT
end.
-spec ingress_tcp_request_timeout() -> non_neg_integer().
ingress_tcp_request_timeout() ->
case application:get_env(erldns, ingress_tcp_request_timeout) of
{ok, TcpTimeout} ->
TcpTimeout;
_ ->
?DEFAULT_TCP_PROCESS_TIMEOUT
end.