riak / apps / erlang_js / src / erlang_js_sup.erl

%% @author Kevin Smith <>
%% @copyright 2009-2010 Basho Technologies
%%    Licensed under the Apache License, Version 2.0 (the "License");
%%    you may not use this file except in compliance with the License.
%%    You may obtain a copy of the License at
%%    Unless required by applicable law or agreed to in writing, software
%%    distributed under the License is distributed on an "AS IS" BASIS,
%%    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%%    See the License for the specific language governing permissions and
%%    limitations under the License.



%% API

%% Supervisor callbacks

-define(SERVER, ?MODULE).

start_link() ->
    supervisor:start_link({local, ?SERVER}, ?MODULE, []).

init([]) ->
    RestartStrategy = one_for_one,
    MaxRestarts = 1000,
    MaxSecondsBetweenRestarts = 3600,

    SupFlags = {RestartStrategy, MaxRestarts, MaxSecondsBetweenRestarts},

    Restart = permanent,
    Shutdown = 2000,
    Type = worker,

    case js_driver:load_driver() of
        false ->
            throw({error, {load_error, "Failed to load"}});
        true ->
            Cache = {cache, {js_cache, start_link, []},
                     Restart, Shutdown, Type, [js_cache]},

            {ok, {SupFlags, [Cache]}}
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