cloudi_core

%-*-Mode:erlang;coding:utf-8;tab-width:4;c-basic-offset:4;indent-tabs-mode:()-*-
% ex: set ft=erlang fenc=utf-8 sts=4 ts=4 sw=4 et nomod:
%%%
%%%------------------------------------------------------------------------
%%% @doc
%%% ==CloudI Application==
%%% @end
%%%
%%% BSD LICENSE
%%% 
%%% Copyright (c) 2009-2015, Michael Truog <mjtruog at gmail dot com>
%%% All rights reserved.
%%% 
%%% Redistribution and use in source and binary forms, with or without
%%% modification, are permitted provided that the following conditions are met:
%%% 
%%%     * Redistributions of source code must retain the above copyright
%%%       notice, this list of conditions and the following disclaimer.
%%%     * Redistributions in binary form must reproduce the above copyright
%%%       notice, this list of conditions and the following disclaimer in
%%%       the documentation and/or other materials provided with the
%%%       distribution.
%%%     * All advertising materials mentioning features or use of this
%%%       software must display the following acknowledgment:
%%%         This product includes software developed by Michael Truog
%%%     * The name of the author may not be used to endorse or promote
%%%       products derived from this software without specific prior
%%%       written permission
%%% 
%%% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
%%% CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
%%% INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
%%% OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
%%% DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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%%%
%%% @author Michael Truog <mjtruog [at] gmail (dot) com>
%%% @copyright 2009-2015 Michael Truog
%%% @version 1.5.1 {@date} {@time}
%%%------------------------------------------------------------------------

-module(cloudi_core_i_app).
-author('mjtruog [at] gmail (dot) com').

-behaviour(application).

%% external interface
-export([test/0]).

%% application callbacks
-export([start/2,
         stop/1]).

-include("cloudi_core_i_configuration.hrl").

%%%------------------------------------------------------------------------
%%% External interface functions
%%%------------------------------------------------------------------------

%%-------------------------------------------------------------------------
%% @doc
%% ===Is cloudi_core being ran during a test with eunit or ct?===
%% @end
%%-------------------------------------------------------------------------

-spec test() ->
    boolean().

-ifdef(TEST).
test() ->
    true.
-else.
test() ->
    (init:get_argument(test) /= error).
-endif.

%%%------------------------------------------------------------------------
%%% Callback functions from application
%%%------------------------------------------------------------------------

%%-------------------------------------------------------------------------
%% @doc
%% ===Start the CloudI application.===
%% @end
%%-------------------------------------------------------------------------

-spec start(StartType :: normal | {takeover, node()} | {failover, node()},
            StartArgs :: any()) ->
    {ok, Pid :: pid()} |
    {ok, Pid :: pid(), State :: any()} |
    {error, Reason :: any()}.

start(_, _) ->
    application:set_env(cloudi_core, mac_address, uuid:mac_address()),
    quickrand:seed(),
    PathOrData = case application:get_env(cloudi_core, configuration) of
        {ok, C} ->
            C;
        undefined ->
            % default configuration
            % (it is better to not use this, to have everything fail-fast)
            [{acl, []},
             {services, []},
             {nodes, []},
             {logging, [{file, "cloudi.log"}]}]
    end,
    case cloudi_core_i_configuration:load(PathOrData) of
        {ok, Config} ->
            cloudi_core_i_sup:start_link(Config);
        {error, _} = Error ->
            Error
    end.

%%-------------------------------------------------------------------------
%% @doc
%% ===Stop the CloudI application.===
%% @end
%%-------------------------------------------------------------------------

-spec stop(State :: any()) ->
    'ok'.

stop(_) ->
    ok.