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%% The contents of this file are subject to the Mozilla Public License
%% Version 1.1 (the "License"); you may not use this file except in
%% compliance with the License. You may obtain a copy of the License
%% at http://www.mozilla.org/MPL/
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and
%% limitations under the License.
%%
%% The Original Code is RabbitMQ.
%%
%% The Initial Developer of the Original Code is GoPivotal, Inc.
%% Copyright (c) 2007-2014 GoPivotal, Inc. All rights reserved.
%%
-module(rabbit_prelaunch).
-export([start/0, stop/0]).
-include("rabbit.hrl").
-define(BaseApps, [rabbit]).
-define(ERROR_CODE, 1).
%%----------------------------------------------------------------------------
%% Specs
%%----------------------------------------------------------------------------
-ifdef(use_specs).
-spec(start/0 :: () -> no_return()).
-spec(stop/0 :: () -> 'ok').
-endif.
%%----------------------------------------------------------------------------
start() ->
[NodeStr] = init:get_plain_arguments(),
ok = duplicate_node_check(NodeStr),
rabbit_misc:quit(0),
ok.
stop() ->
ok.
%%----------------------------------------------------------------------------
%% Check whether a node with the same name is already running
duplicate_node_check([]) ->
%% Ignore running node while installing windows service
ok;
duplicate_node_check(NodeStr) ->
Node = rabbit_nodes:make(NodeStr),
{NodeName, NodeHost} = rabbit_nodes:parts(Node),
case rabbit_nodes:names(NodeHost) of
{ok, NamePorts} ->
case proplists:is_defined(NodeName, NamePorts) of
true -> io:format("ERROR: node with name ~p "
"already running on ~p~n",
[NodeName, NodeHost]),
io:format(rabbit_nodes:diagnostics([Node]) ++ "~n"),
rabbit_misc:quit(?ERROR_CODE);
false -> ok
end;
{error, EpmdReason} ->
io:format("ERROR: epmd error for host ~p: ~p (~s)~n",
[NodeHost, EpmdReason,
rabbit_misc:format_inet_error(EpmdReason)]),
rabbit_misc:quit(?ERROR_CODE)
end.
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