55 lines
1.5 KiB
Erlang
55 lines
1.5 KiB
Erlang
%% @author author <author@example.com>
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%% @copyright YYYY author.
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%% @doc Supervisor for the skel application.
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-module(skel_sup).
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-author('author <author@example.com>').
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-behaviour(supervisor).
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%% External exports
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-export([start_link/0, upgrade/0]).
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%% supervisor callbacks
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-export([init/1]).
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%% @spec start_link() -> ServerRet
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%% @doc API for starting the supervisor.
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start_link() ->
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supervisor:start_link({local, ?MODULE}, ?MODULE, []).
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%% @spec upgrade() -> ok
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%% @doc Add processes if necessary.
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upgrade() ->
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{ok, {_, Specs}} = init([]),
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Old = sets:from_list(
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[Name || {Name, _, _, _} <- supervisor:which_children(?MODULE)]),
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New = sets:from_list([Name || {Name, _, _, _, _, _} <- Specs]),
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Kill = sets:subtract(Old, New),
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sets:fold(fun (Id, ok) ->
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supervisor:terminate_child(?MODULE, Id),
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supervisor:delete_child(?MODULE, Id),
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ok
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end, ok, Kill),
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[supervisor:start_child(?MODULE, Spec) || Spec <- Specs],
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ok.
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%% @spec init([]) -> SupervisorTree
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%% @doc supervisor callback.
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init([]) ->
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Ip = case os:getenv("MOCHIWEB_IP") of false -> "0.0.0.0"; Any -> Any end,
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WebConfig = [
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{ip, Ip},
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{port, 8000},
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{docroot, skel_deps:local_path(["priv", "www"])}],
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Web = {skel_web,
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{skel_web, start, [WebConfig]},
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permanent, 5000, worker, dynamic},
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Processes = [Web],
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{ok, {{one_for_one, 10, 10}, Processes}}.
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