chore(emqx_vm): delete stale code

The port binary format is no longer compatible in OTP 23

src/emqx_vm.erl

@@ -44,11 +44,6 @@
         , get_ets_object/1
         ]).
 
--export([ get_port_types/0
-        , get_port_info/0
-        , get_port_info/1
-        ]).
-
 -export([cpu_util/0]).
 
 -ifdef(TEST).
@@ -361,98 +356,6 @@ get_ets_object(Tab) ->
         ets:tab2list(Tab)
     end.
 
-get_port_types() ->
-    lists:usort(fun({KA, VA},{KB, VB})-> {VA, KB} >{VB, KA} end,
-    ports_type_count([Type || {_Port, Type} <- ports_type_list()])).
-
-get_port_info() ->
-    [get_port_info(Port) ||Port <- erlang:ports()].
-
-get_port_info(PortTerm) ->
-    Port = transform_port(PortTerm),
-    [port_info(Port, Type) || Type <- [meta, signals, io, memory_used, specific]].
-
-port_info(Port, meta) ->
-    {meta, List} = port_info_type(Port, meta, [id, name, os_pid]),
-    case port_info(Port, registered_name)  of
-        []   -> {meta, List};
-        Name -> {meta, [Name | List]}
-    end;
-
-port_info(PortTerm, signals) ->
-    port_info_type(PortTerm, signals, [connected, links, monitors]);
-
-port_info(PortTerm, io) ->
-    port_info_type(PortTerm, io, [input, output]);
-
-port_info(PortTerm, memory_used) ->
-    port_info_type(PortTerm, memory_used, [memory, queue_size]);
-
-port_info(PortTerm, specific) ->
-    Port = transform_port(PortTerm),
-    Props = case erlang:port_info(Port, name) of
-                {_, Type} when Type =:= "udp_inet";
-                       Type =:= "tcp_inet";
-                       Type =:= "sctp_inet" ->
-                    try inet:getstat(Port) of
-                        {ok, Stats} -> [{statistics, Stats}];
-                        {error, _} -> []
-                    catch
-                        _Error:_Reason -> []
-                    end ++
-                    try inet:peername(Port) of
-                        {ok, Peer} -> [{peername, Peer}];
-                        _ -> []
-                    catch
-                        _Error:_Reason -> []
-                    end ++
-                    try inet:sockname(Port) of
-                        {ok, Local} -> [{sockname, Local}];
-                        {error, _}  -> []
-                    catch
-                        _Error:_Reason -> []
-                    end ++
-                    try inet:getopts(Port, ?SOCKET_OPTS ) of
-                        {ok, Opts} -> [{options, Opts}];
-                        {error, _} -> []
-                    catch
-                        _Error:_Reason -> []
-                    end;
-                {_, "efile"} ->
-                    [];
-                _ ->
-                    []
-            end,
-    {specific, Props};
-port_info(PortTerm, Key) when is_atom(Key) ->
-    Port = transform_port(PortTerm),
-    erlang:port_info(Port, Key).
-
-port_info_type(PortTerm, Type, Keys) ->
-    Port = transform_port(PortTerm),
-    {Type, [erlang:port_info(Port, Key) || Key <- Keys]}.
-
-transform_port(Port) when is_port(Port)  -> Port;
-transform_port("#Port<0." ++ Id) ->
-    N = list_to_integer(lists:sublist(Id, length(Id) - 1)),
-    transform_port(N);
-transform_port(N) when is_integer(N) ->
-    Name = iolist_to_binary(atom_to_list(node())),
-    NameLen = iolist_size(Name),
-    Vsn = binary:last(term_to_binary(self())),
-    Bin = <<131, 102, 100, NameLen:2/unit:8, Name:NameLen/binary, N:4/unit:8, Vsn:8>>,
-    binary_to_term(Bin).
-
-ports_type_list() ->
-    [{Port, PortType} || Port <- erlang:ports(),
-                         {_, PortType} <- [erlang:port_info(Port, name)]].
-
-ports_type_count(Types) ->
-    DictTypes = lists:foldl(fun(Type, Acc)->
-            dict:update_counter(Type, 1, Acc)
-        end, dict:new(), Types),
-    dict:to_list(DictTypes).
-
 mapping(Entries) ->
     mapping(Entries, []).
 mapping([], Acc) -> Acc;

test/emqx_vm_SUITE.erl

@@ -70,24 +70,6 @@ t_get_ets_object(_Config) ->
     ets:insert(test, {k, v}),
     [{k, v}] = emqx_vm:get_ets_object(test).
 
-t_get_port_types(_Config) ->
-    emqx_vm:get_port_types().
-
-t_get_port_info(_Config) ->
-    emqx_vm:get_port_info(),
-    spawn(fun easy_server/0),
-    ct:sleep(100),
-    {ok, Sock} = gen_tcp:connect("localhost", 5678, [binary, {packet, 0}]),
-    emqx_vm:get_port_info(),
-    ok = gen_tcp:close(Sock),
-    [_Port | _] = erlang:ports().
-
-t_transform_port(_Config) ->
-    [Port | _] = erlang:ports(),
-    ?assertEqual(Port, emqx_vm:transform_port(Port)),
-    <<131, 102, 100, NameLen:2/unit:8, _Name:NameLen/binary, N:4/unit:8, _Vsn:8>> = erlang:term_to_binary(Port),
-    ?assertEqual(Port, emqx_vm:transform_port("#Port<0." ++ integer_to_list(N) ++ ">")).
-
 t_scheduler_usage(_Config) ->
     emqx_vm:scheduler_usage(5000).