43 lines
1.8 KiB
Erlang
43 lines
1.8 KiB
Erlang
%% Copyright (c) 2019-2021, Jan Uhlig <juhlig@hnc-agency.org>
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%%
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%% Permission to use, copy, modify, and/or distribute this software for any
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%% purpose with or without fee is hereby granted, provided that the above
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%% copyright notice and this permission notice appear in all copies.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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-module(ranch_conns_sup_sup).
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-behaviour(supervisor).
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-export([start_link/4]).
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-export([init/1]).
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-spec start_link(ranch:ref(), module(), module(), module()) -> {ok, pid()}.
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start_link(Ref, Transport, Protocol, Logger) ->
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ok = ranch_server:cleanup_connections_sups(Ref),
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supervisor:start_link(?MODULE, {
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Ref, Transport, Protocol, Logger
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}).
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-spec init({ranch:ref(), module(), module(), module()})
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-> {ok, {supervisor:sup_flags(), [supervisor:child_spec()]}}.
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init({Ref, Transport, Protocol, Logger}) ->
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TransOpts = ranch_server:get_transport_options(Ref),
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NumAcceptors = maps:get(num_acceptors, TransOpts, 10),
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NumConnsSups = maps:get(num_conns_sups, TransOpts, NumAcceptors),
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StatsCounters = counters:new(2*NumConnsSups, []),
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ok = ranch_server:set_stats_counters(Ref, StatsCounters),
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ChildSpecs = [#{
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id => {ranch_conns_sup, N},
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start => {ranch_conns_sup, start_link, [Ref, N, Transport, TransOpts, Protocol, Logger]},
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type => supervisor
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} || N <- lists:seq(1, NumConnsSups)],
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{ok, {#{intensity => 1 + ceil(math:log2(NumConnsSups))}, ChildSpecs}}.
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