zotonic_launcher

%%%-------------------------------------------------------------------
%%% @author Blaise
%%% @doc
%% 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
%%
%%	 http://www.apache.org/licenses/LICENSE-2.0
%%
%% 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.
%%% @end
%%% Created : 18. Dec 2017 11:31 AM
%%%-------------------------------------------------------------------
-module(zotonic_cmd_etop).
-author("Blaise").

%% API
-export([info/0, run/1]).

info() ->
    "Show top processes running in the Erlang VM.".

run(_) ->
    case zotonic_command:net_start() of
        ok ->
            case zotonic_command:get_target_node() of
                {ok, Target} ->
                    case net_adm:ping(Target) of
                        pong ->
                            EtopArgs = [
                                {lines, 25},
                                {tracing, off},
                                {output, text},
                                {node, Target}
                            ],
                            etop:start(EtopArgs);
                        pang ->
                            zotonic_command:format_error({error, pang})
                    end;
                {error, _} = Error ->
                    zotonic_command:format_error(Error)
            end;
        {error, _} = Error ->
            zotonic_command:format_error(Error)
    end.