File 7632-diameter-Add-various-utility-info-function... of Package erlang

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File 7632-diameter-Add-various-utility-info-functions.patch of Package erlang (Revision a678cd3ed0e09b30f6d421d2e5c6d79e)

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From 8c2ff23ea4cf2c29fd7d72339de408bbdaaf10b5 Mon Sep 17 00:00:00 2001
From: Micael Karlberg <bmk@erlang.org>
Date: Tue, 27 Feb 2024 12:56:31 +0100
Subject: [PATCH 2/5] [diameter] Add various utility/info functions

---
 lib/diameter/src/base/diameter.erl           |  91 ++++++++++-
 lib/diameter/src/base/diameter_config.erl    |  32 ++++
 lib/diameter/src/base/diameter_service.erl   | 162 ++++++++++++++++++-
 lib/diameter/test/diameter_traffic_SUITE.erl |  47 +++++-
 4 files changed, 323 insertions(+), 9 deletions(-)

diff --git a/lib/diameter/src/base/diameter.erl b/lib/diameter/src/base/diameter.erl
index 3231327c64..0d12dcc196 100644
--- a/lib/diameter/src/base/diameter.erl
+++ b/lib/diameter/src/base/diameter.erl
@@ -25,6 +25,9 @@
          stop_service/1,
          add_transport/2,
          remove_transport/2,
+         which_transports/0,  which_transports/1,
+         which_watchdogs/0,   which_watchdogs/1,
+         which_connections/0, which_connections/1,
          subscribe/1,
          unsubscribe/1]).
 
@@ -142,6 +145,7 @@ start_service(SvcName, Opts)
 stop_service(SvcName) ->
     diameter_config:stop_service(SvcName).
 
+
 %% ---------------------------------------------------------------------------
 %% services/0
 %% ---------------------------------------------------------------------------
@@ -152,6 +156,7 @@ stop_service(SvcName) ->
 services() ->
     [Name || {Name, _} <- diameter_service:services()].
 
+
 %% ---------------------------------------------------------------------------
 %% service_info/2
 %% ---------------------------------------------------------------------------
@@ -164,7 +169,7 @@ service_info(SvcName, Option) ->
     diameter_service:info(SvcName, Option).
 
 %% ---------------------------------------------------------------------------
-%% peer_info/2
+%% peer_info/1
 %% ---------------------------------------------------------------------------
 
 -spec peer_info(peer_ref())
@@ -206,6 +211,90 @@ add_transport(SvcName, {T, Opts} = Cfg)
 remove_transport(SvcName, Pred) ->
     diameter_config:remove_transport(SvcName, Pred).
 
+
+%% ---------------------------------------------------------------------------
+%% which_transport/0, which_transport/1
+%% ---------------------------------------------------------------------------
+
+-spec which_transports() -> [#{ref     := reference(),
+                               type    := atom(),
+                               service := string()}].
+which_transports() ->
+    diameter_config:which_transports().
+
+
+-spec which_transports(SvcName) -> [#{ref  := reference(),
+                                      type := atom()}] when
+      SvcName :: string().
+
+which_transports(SvcName) ->
+    diameter_config:which_transports(SvcName).
+
+
+%% ---------------------------------------------------------------------------
+%% which_watchdogs/0, which_watchdogs/1
+%% ---------------------------------------------------------------------------
+
+-spec which_watchdogs() -> [#{ref     := reference(),
+                              type    := atom(),
+                              pid     := pid(),
+                              state   := diameter_service:wd_state(),
+                              peer    := boolean() | pid(),
+                              uptime  := {Hours, Mins, Secs, MicroSecs},
+                              service := SvcName}] when
+      Hours     :: non_neg_integer(),
+      Mins      :: 0..59,
+      Secs      :: 0..59,
+      MicroSecs :: 0..999999,
+      SvcName   :: string().
+
+which_watchdogs() ->
+    diameter_service:which_watchdogs().
+
+
+-spec which_watchdogs(SvcName) ->
+          [#{ref     := reference(),
+             type    := atom(),
+             pid     := pid(),
+             state   := diameter_service:wd_state(),
+             peer    := boolean() | pid(),
+             uptime  := {Hours, Mins, Secs, MicroSecs}}] when
+      SvcName   :: string(),
+      Hours     :: non_neg_integer(),
+      Mins      :: 0..59,
+      Secs      :: 0..59,
+      MicroSecs :: 0..999999.
+
+which_watchdogs(SvcName) ->
+    diameter_service:which_watchdogs(SvcName).
+
+
+%% ---------------------------------------------------------------------------
+%% which_connections/0, which_connections/1
+%% ---------------------------------------------------------------------------
+
+-spec which_connections() ->
+          [{SvcName,
+            [#{peer     := term(),
+               wd       := term(),
+               peername := {inet:ip_address(), inet:port_number()},
+               sockname := {inet:ip_address(), inet:port_number()}}]}] when
+      SvcName :: string().
+
+which_connections() ->
+    diameter_service:which_connections().
+
+-spec which_connections(SvcName) ->
+          [#{peer     := term(),
+             wd       := term(),
+             peername := {inet:ip_address(), inet:port_number()},
+             sockname := {inet:ip_address(), inet:port_number()}}] when
+      SvcName :: string().
+
+which_connections(SvcName) ->
+    diameter_service:which_connections(SvcName).
+
+
 %% ---------------------------------------------------------------------------
 %% subscribe/1
 %% ---------------------------------------------------------------------------
diff --git a/lib/diameter/src/base/diameter_config.erl b/lib/diameter/src/base/diameter_config.erl
index 0d6610b866..cf900186d3 100644
--- a/lib/diameter/src/base/diameter_config.erl
+++ b/lib/diameter/src/base/diameter_config.erl
@@ -46,6 +46,10 @@
          lookup/1,
          subscribe/2]).
 
+-export([
+         which_transports/0, which_transports/1
+        ]).
+
 %% server start
 -export([start_link/0,
          start_link/1]).
@@ -234,6 +238,7 @@ pred(_) ->
 subscribe(Ref, T) ->
     diameter_reg:subscribe(?TRANSPORT_KEY(Ref), T).
 
+
 %% --------------------------------------------------------------------------
 %% # have_transport/2
 %%
@@ -248,6 +253,32 @@ have_transport(SvcName, Ref) ->
                           {'=:=', '$2', {const, Ref}}}],
              [true]}]).
 
+
+%% --------------------------------------------------------------------------
+%% # which_transports/0,1
+%% --------------------------------------------------------------------------
+
+which_transports() ->
+    MatchHead = #transport{service = '$1',
+                           ref     = '$2',
+                           type    = '$3',
+                           _       = '_'},
+    Guard     = [],
+    Return    = [{{'$2', '$3', '$1'}}],
+    [#{ref => Ref, type => Type, service => Service} ||
+        {Ref, Type, Service} <- select([{MatchHead, Guard, Return}])].
+
+which_transports(SvcName) ->
+    MatchHead = #transport{service = '$1',
+                           ref     = '$2',
+                           type    = '$3',
+                           _       = '_'},
+    Guard     = [{'=:=', '$1', {const, SvcName}}],
+    Return    = [{{'$2', '$3'}}],
+    [#{ref => Ref, type => Type} ||
+        {Ref, Type} <- select([{MatchHead, Guard, Return}])].
+
+
 %% --------------------------------------------------------------------------
 %% # lookup/1
 %% --------------------------------------------------------------------------
@@ -263,6 +294,7 @@ lookup(SvcName) ->
              [{'=:=', '$1', {const, SvcName}}],
              [{{'$2', '$3', '$4'}}]}]).
 
+
 %% ---------------------------------------------------------
 %% EXPORTED INTERNAL FUNCTIONS
 %% ---------------------------------------------------------
diff --git a/lib/diameter/src/base/diameter_service.erl b/lib/diameter/src/base/diameter_service.erl
index 22fecf74a5..a2a3771270 100644
--- a/lib/diameter/src/base/diameter_service.erl
+++ b/lib/diameter/src/base/diameter_service.erl
@@ -55,7 +55,9 @@
          call_module/3,
          whois/1,
          state/1,
-         uptime/1]).
+         uptime/1,
+         which_watchdogs/0,   which_watchdogs/1,
+         which_connections/0, which_connections/1]).
 
 %% gen_server callbacks
 -export([init/1,
@@ -65,9 +67,16 @@
          terminate/2,
          code_change/3]).
 
+-export_type([wd_state/0]).
+
 -include_lib("diameter/include/diameter.hrl").
 -include("diameter_internal.hrl").
 
+%% Enable debug logging by set(ing) level to debug.
+%% For example: logger:set_primary_config(level, debug),
+%% -define(DBG(F,A),
+%%         logger:debug("~w:~w(~w) -> " ++ F ++ "~n",
+%%                      [?MODULE, ?FUNCTION_NAME, ?LINE | A])).
 
 %% RFC 3539 watchdog states.
 -define(WD_INITIAL, initial).
@@ -205,6 +214,138 @@ stop_transport(_, []) ->
 stop_transport(SvcName, [_|_] = Refs) ->
     call_service_by_name(SvcName, {stop, Refs}).
 
+
+%% --------------------------------------------------------------------------
+%% # which_watchdogs/0, which_watchdogs/1
+%% --------------------------------------------------------------------------
+
+which_watchdogs() ->
+    which_watchdogs(services(), []).
+
+which_watchdogs([], Acc) ->
+    lists:flatten(lists:reverse(Acc));
+which_watchdogs([{SvcName, _} | Services], Acc) ->
+    case which_watchdogs(SvcName) of
+        WDs when is_list(WDs) ->
+            which_watchdogs(Services,
+                            [[WD#{service => SvcName} || WD <- WDs] | Acc]);
+        undefined ->
+            which_watchdogs(Services, Acc)
+    end.
+
+which_watchdogs(SvcName) ->
+    case lookup_state(SvcName) of
+        [#state{watchdogT = WDT}] ->
+            [#{pid    => Pid,
+               ref    => Ref,
+               type   => Type,
+               state  => State,
+               uptime => diameter_lib:now_diff(Started),
+               peer   => Peer} ||
+                #watchdog{pid     = Pid,
+                          type    = Type,
+                          ref     = Ref,
+                          state   = State,
+                          started = Started,
+                          peer    = Peer} <- ets:tab2list(WDT)];
+        [] ->
+            undefined
+    end.
+
+
+%% ---------------------------------------------------------------------------
+%% # which_connections/0, which_connections/1
+%% ---------------------------------------------------------------------------
+
+which_connections() ->
+    Services = [SvcName || {SvcName, _} <- services()],
+    which_connections1(Services).
+
+which_connections1(Services) ->
+    which_connections1(Services, []).
+
+which_connections1([], Acc) ->
+    lists:reverse(Acc);
+which_connections1([SvcName | Services], Acc) ->
+    case which_connections(SvcName) of
+        [] ->
+            which_connections1(Services, Acc);
+        Conns ->
+            which_connections1(Services, [{SvcName, Conns} | Acc])
+    end.
+
+which_connections(SvcName) ->
+    case lookup_state(SvcName) of
+        [#state{watchdogT = WDT,
+                local     = {PT, _, _}}] ->
+            connections_info(WDT, PT);
+        [] ->
+            []
+    end.
+
+connections_info(WDT, PT) ->
+    try ets:tab2list(WDT) of
+        L ->
+            connections_info2(PT, L)
+    catch
+        error: badarg -> []  %% service has gone down
+    end.
+    
+connections_info2(PT, L) ->
+    connections_info2(PT, L, []).
+
+connections_info2(_PT, [], Acc) ->
+    lists:reverse(Acc);
+connections_info2(PT, [WD | WDs], Acc) ->
+    ConnInfo = connection_info(PT, WD),
+    connections_info2(PT, WDs, [ConnInfo | Acc]).
+
+connection_info(PT, #watchdog{pid     = Pid,
+                              type    = Type,
+                              ref     = Ref,
+                              state   = State,
+                              started = Started,
+                              peer    = TPid}) ->
+    Info = #{wd => #{ref    => Ref,
+                     pid    => Pid,
+                     type   => Type,
+                     state  => State,
+                     uptime => diameter_lib:now_diff(Started)}
+            },
+    connection_info2(PT, TPid, State, Info).
+
+connection_info2(PT, TPid, State, Info)
+  when is_pid(TPid) andalso (State =/= ?WD_DOWN) ->
+    try ets:lookup(PT, TPid) of
+        [#peer{pid = PPid, started = Started}] ->
+            connection_info3(PPid, Started, Info);
+        [] ->
+            Info
+    catch
+        error: badarg -> []  %% service has gone down
+    end;
+connection_info2(_PT, _PPid, _State, Info) ->
+    Info.
+
+connection_info3(PPid, Started, Info) ->
+    Info2     = Info#{peer => #{pid    => PPid,
+                                uptime => diameter_lib:now_diff(Started)}},
+    {_, PD}   = process_info(PPid, dictionary),
+    {_, T}    = lists:keyfind({diameter_peer_fsm, start}, 1, PD),
+    {TPid, {_Type, TMod, _Cfg}} = T,
+    {_, TD}   = process_info(TPid, dictionary),
+    {_, Data} = lists:keyfind({TMod, info}, 1, TD),
+    try TMod:info(Data) of
+        TInfo ->
+            Socket = proplists:get_value(socket, TInfo),
+            Peer   = proplists:get_value(peer,   TInfo),
+            Info2#{sockname => Socket,
+                   peername => Peer}
+    catch
+        _:_ -> Info2
+    end.
+          
+
 %% ---------------------------------------------------------------------------
 %% # info/2
 %% ---------------------------------------------------------------------------
@@ -386,6 +527,10 @@ uptime(Svc) ->
 call_module(Service, AppMod, Request) ->
     call_service(Service, {call_module, AppMod, Request}).
 
+
+%% ===========================================================================
+%% ===========================================================================
+
 %% ---------------------------------------------------------------------------
 %% # init/1
 %% ---------------------------------------------------------------------------
@@ -1974,7 +2119,8 @@ complete_info(Item, #state{service = Svc} = S) ->
                 #diameter_caps.firmware_revision;
         capabilities -> service_info(?CAP_INFO, S);
         applications -> info_apps(S);
-        transport    -> info_transport(S);
+        transport        -> info_transport(S, false);
+        transport_simple -> info_transport(S, true);
         options      -> info_options(S);
         keys         -> ?ALL_INFO ++ ?CAP_INFO ++ ?OTHER_INFO;
         all          -> service_info(?ALL_INFO, S);
@@ -2016,7 +2162,16 @@ info_stats(#state{watchdogT = WatchdogT}) ->
 %% the accumulated values for the ref and associated watchdog/peer
 %% pids.
 
-info_transport(S) ->
+%% foo() ->
+%%     #{ref              :: reference(),
+%%       type             :: connect | listen,
+%%       transport_module :: module(),
+%%       wd               :: {pid(), integer(), wd_state()},
+%%       peer             :: {pid(), Started :: integer()},
+%%       local            :: {inet:ip_address(), inet:port_number()},
+%%       remote           :: {inet:ip_address(), inet:port_number()}}.
+
+info_transport(S, _) ->
     PeerD = peer_dict(S, config_dict(S)),
     Stats = diameter_stats:sum(dict:fetch_keys(PeerD)),
     dict:fold(fun(R, Ls, A) ->
@@ -2165,7 +2320,6 @@ bins_sum3([{P, S, _} | T], N, D) ->
     bins_sum3(T, N-1, dict:store(P,S,D)).
 
 
-    
 
 %% The point of extracting the config here is so that 'transport' info
 %% has one entry for each transport ref, the peer table only
diff --git a/lib/diameter/test/diameter_traffic_SUITE.erl b/lib/diameter/test/diameter_traffic_SUITE.erl
index 37fc2d9446..ac1d8c35fa 100644
--- a/lib/diameter/test/diameter_traffic_SUITE.erl
+++ b/lib/diameter/test/diameter_traffic_SUITE.erl
@@ -298,14 +298,53 @@ traffic(#group{} = Cfg) ->
     ok = client(Cfg, LRef),
     [] = send(Cfg),
 
-    io:format("Service(s) info: "
-              "~n   ~p"
-              "~n", [[{SvcName, diameter:service_info(SvcName, all)} ||
-                         SvcName <- diameter:services()]]),
+    print_services_info(),
 
     ok = stop_services(Cfg),
     [] = ets:tab2list(diameter_request).
 
+
+print_services_info() ->
+    print_services_info(diameter:services()).
+
+print_services_info([]) ->
+    io:format("~n", []);
+print_services_info([Service | Services]) ->
+    io:format("~n   Service: ~s"
+              "~n      Config:"
+              "~n         ~p"
+              "~n      Which Connections:"
+              "~n         ~p"
+              "~n      Which Connections/Service:"
+              "~n         ~p"
+              "~n      Which Watchdogs:"
+              "~n         ~p"
+              "~n      Which Watchdogs/Service:"
+              "~n         ~p"
+              "~n      Which Transports:"
+              "~n         ~p"
+              "~n      Which Transports/Service:"
+              "~n         ~p"
+              "~n      Peers Info:"
+              "~n         ~p"
+              "~n      Transport Info:"
+              "~n         ~p"
+              "~n      All info:"
+              "~n         ~p",
+              [Service,
+               diameter_config:lookup(Service),
+               diameter:which_connections(),
+               diameter:which_connections(Service),
+               diameter:which_watchdogs(),
+               diameter:which_watchdogs(Service),
+               diameter:which_transports(),
+               diameter:which_transports(Service),
+               diameter:service_info(Service, peers),
+               diameter:service_info(Service, transport),
+               diameter:service_info(Service, all)]),
+    print_services_info(Services).
+
+
 %% start_service/2
 
 start_service(Svc, Opts) ->
-- 
2.35.3

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File 7632-diameter-Add-various-utility-info-functions.patch of Package erlang (Revision a678cd3ed0e09b30f6d421d2e5c6d79e)

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