| 1 |
|
%%% Textgroup server. |
| 2 |
|
%%% |
| 3 |
|
%%% Copyright (c) 2022, 2023 Holger Weiss <holger@zedat.fu-berlin.de>. |
| 4 |
|
%%% All rights reserved. |
| 5 |
|
%%% |
| 6 |
|
%%% Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 |
|
%%% you may not use this file except in compliance with the License. |
| 8 |
|
%%% You may obtain a copy of the License at |
| 9 |
|
%%% |
| 10 |
|
%%% http://www.apache.org/licenses/LICENSE-2.0 |
| 11 |
|
%%% |
| 12 |
|
%%% Unless required by applicable law or agreed to in writing, software |
| 13 |
|
%%% distributed under the License is distributed on an "AS IS" BASIS, |
| 14 |
|
%%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 |
|
%%% See the License for the specific language governing permissions and |
| 16 |
|
%%% limitations under the License. |
| 17 |
|
|
| 18 |
|
-module(textgroup_acceptor_sup). |
| 19 |
|
-behaviour(supervisor). |
| 20 |
|
-export([start_link/0, |
| 21 |
|
init/1]). |
| 22 |
|
|
| 23 |
|
-include_lib("kernel/include/logger.hrl"). |
| 24 |
|
-define(SERVER, ?MODULE). |
| 25 |
|
-define(SEND_TIMEOUT, timer:seconds(15)). |
| 26 |
|
|
| 27 |
|
%% API. |
| 28 |
|
|
| 29 |
|
-spec start_link() -> {ok, pid()} | {error, term()}. |
| 30 |
|
start_link() -> |
| 31 |
2 |
?LOG_DEBUG("Starting acceptor supervisor"), |
| 32 |
2 |
supervisor:start_link({local, ?SERVER}, ?MODULE, []). |
| 33 |
|
|
| 34 |
|
-spec init([]) -> {ok, {supervisor:sup_flags(), [supervisor:child_spec()]}}. |
| 35 |
|
init([]) -> |
| 36 |
2 |
?LOG_DEBUG("Initializing acceptor supervisor"), |
| 37 |
2 |
{ok, Port} = application:get_env(port), |
| 38 |
2 |
{ok, PoolSize} = application:get_env(pool_size), |
| 39 |
2 |
Listener = start_listener(Port), |
| 40 |
2 |
SupFlags = #{}, |
| 41 |
2 |
ChildSpecs = |
| 42 |
|
lists:map( |
| 43 |
|
fun(N) -> |
| 44 |
15 |
#{id => {textgroup_acceptor, N}, |
| 45 |
|
start => {textgroup_acceptor, start_link, [Listener]}, |
| 46 |
|
shutdown => brutal_kill} |
| 47 |
|
end, lists:seq(1, PoolSize)), |
| 48 |
2 |
{ok, {SupFlags, ChildSpecs}}. |
| 49 |
|
|
| 50 |
|
%% Internal functions. |
| 51 |
|
|
| 52 |
|
-spec start_listener(inet:port_number()) -> inet:socket(). |
| 53 |
|
start_listener(Port) -> |
| 54 |
2 |
?LOG_DEBUG("Starting listener on port ~B", [Port]), |
| 55 |
2 |
{ok, Listener} = gen_tcp:listen(Port, [binary, |
| 56 |
|
{reuseaddr, true}, |
| 57 |
|
{nodelay, true}, |
| 58 |
|
{active, false}, |
| 59 |
|
{packet, line}, |
| 60 |
|
{send_timeout, ?SEND_TIMEOUT}, |
| 61 |
|
{send_timeout_close, true}]), |
| 62 |
2 |
Listener. |