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%%% Copyright (c) 2014-2015, NORDUnet A/S.
%%% See LICENSE for licensing information.
-module(plop_sup).
-behaviour(supervisor).
-export([start_link/1, init/1]).
-export([start_in_shell/1]).
start_link(_Args) ->
supervisor:start_link({local, ?MODULE}, ?MODULE, []).
%% For testing.
start_in_shell(Args) ->
{ok, Pid} = start_link(Args),
unlink(Pid).
permanent_worker(Name, {Module, Function, Args}) ->
permanent_worker(Name, {Module, Function, Args}, [Module]).
permanent_worker(Name, StartFunc, Modules) ->
{Name,
StartFunc,
permanent,
10000,
worker, Modules}.
perm_database_children(DB) ->
lists:filtermap(fun ({Name, DBName, ConfigName}) ->
case application:get_env(plop, ConfigName) of
{ok, Path} ->
{true, permanent_worker(Name, {perm, start_link, [DBName, Path]})};
undefined ->
false
end
end, DB).
%% Supervisor callback
init([]) ->
Services = application:get_env(plop, services, []),
DBChildren = perm_database_children([
{the_entryhash_db, entryhash_db, entryhash_root_path},
{the_indexforhash_db, indexforhash_db, indexforhash_root_path},
{the_entry_db, entry_db, entry_root_path}
]),
Children = [permanent_worker(the_db, {db, start_link, []}, [db]),
permanent_worker(the_storagedb, {storagedb, start_link, []}),
permanent_worker(fsync, {fsyncport, start_link, []})],
OptionalChildren = lists:map(fun (ServiceName) ->
case ServiceName of
ht ->
permanent_worker(the_ht, {ht, start_link, []});
sign ->
permanent_worker(the_signing, {sign, start_link, []})
end
end, Services),
{ok, {{one_for_one, 3, 10},
DBChildren ++ Children ++ OptionalChildren
}}.
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