refactor: expose only server_port for rpc

previously, there were 4 port configs:
- tcp_server_port
- ssl_server_port
- tcp_client_port
- ssl_client_port

apps/emqx_conf/src/emqx_conf_schema.erl

@@ -86,6 +86,8 @@
     external_broker_crashed
 ]).
 
+-define(DEFAULT_RPC_PORT, 5369).
+
 %% Callback to upgrade config after loaded from config file but before validation.
 upgrade_raw_conf(Raw0) ->
     Raw1 = emqx_connector_schema:transform_bridges_v1_to_connectors_and_bridges_v2(Raw0),
@@ -756,29 +758,20 @@ fields("rpc") ->
                     desc => ?DESC(rpc_port_discovery)
                 }
             )},
-        {"tcp_server_port",
+        {"server_port",
             sc(
-                integer(),
-                #{
-                    mapping => "gen_rpc.tcp_server_port",
-                    default => 5369,
-                    desc => ?DESC(rpc_tcp_server_port)
-                }
-            )},
-        {"ssl_server_port",
-            sc(
-                integer(),
+                pos_integer(),
                 #{
-                    mapping => "gen_rpc.ssl_server_port",
-                    default => 5369,
-                    desc => ?DESC(rpc_ssl_server_port)
+                    aliases => [tcp_server_port, ssl_server_port],
+                    default => ?DEFAULT_RPC_PORT,
+                    desc => ?DESC(rpc_server_port)
                 }
             )},
         {"client_num",
             sc(
                 range(1, 256),
                 #{
-                    aliases => [tcp_client_num]
+                    aliases => [tcp_client_num],
                     default => 10,
                     desc => ?DESC(rpc_client_num)
                 }
@@ -1140,8 +1133,10 @@ translation("emqx") ->
 translation("gen_rpc") ->
     [
         {"default_client_driver", fun tr_gen_rpc_default_client_driver/1},
-        {"tcp_client_port", fun tr_gen_rpc_tcp_client_port/1},
-        {"ssl_client_port", fun tr_gen_rpc_ssl_client_port/1},
+        {"tcp_server_port", fun tr_gen_rpc_port/1},
+        {"ssl_server_port", fun tr_gen_rpc_port/1},
+        {"tcp_client_port", fun tr_gen_rpc_port/1},
+        {"ssl_client_port", fun tr_gen_rpc_port/1},
         {"ssl_client_options", fun tr_gen_rpc_ssl_options/1},
         {"ssl_server_options", fun tr_gen_rpc_ssl_options/1},
         {"socket_ip", fun(Conf) ->
@@ -1225,11 +1220,8 @@ collector_enabled(disabled, _) -> [].
 tr_gen_rpc_default_client_driver(Conf) ->
     conf_get("rpc.protocol", Conf).
 
-tr_gen_rpc_tcp_client_port(Conf) ->
-    conf_get("rpc.tcp_server_port", Conf).
-
-tr_gen_rpc_ssl_client_port(Conf) ->
-    conf_get("rpc.ssl_server_port", Conf).
+tr_gen_rpc_port(Conf) ->
+    conf_get("rpc.server_port", Conf).
 
 tr_gen_rpc_ssl_options(Conf) ->
     Ciphers = conf_get("rpc.ciphers", Conf),

rel/i18n/emqx_conf_schema.hocon

@@ -132,10 +132,11 @@ node_name.label:
 """Node Name"""
 
 rpc_port_discovery.desc:
-"""<code>manual</code>: discover ports by <code>tcp_server_port</code>.<br/>
+"""<code>manual</code>: discover ports by <code>server_port</code>.<br/>
 <code>stateless</code>: discover ports in a stateless manner, using the following algorithm.
 If node name is <code>emqxN@127.0.0.1</code>, where the N is an integer,
-then the listening port will be 5370 + N."""
+then the listening port will be 5370 + N.
+NOTE: when `port_discovery` is `manual`, `server_port` configuration has no effect."""
 
 rpc_port_discovery.label:
 """RRC Port Discovery"""
@@ -358,12 +359,12 @@ to <code>rlog</code>."""
 db_role.label:
 """DB Role"""
 
-rpc_tcp_server_port.desc:
+rpc_server_port.desc:
 """Listening port used by RPC local service.<br/>
 Note that this config only takes effect when rpc.port_discovery is set to manual."""
 
-rpc_tcp_server_port.label:
-"""RPC TCP Server Port"""
+rpc_server_port.label:
+"""RPC Server Port"""
 
 desc_console_handler.desc:
 """Log handler that prints log events to the EMQX console."""
@@ -734,14 +735,6 @@ this is where to look."""
 desc_rpc.label:
 """RPC"""
 
-rpc_ssl_server_port.desc:
-"""Listening port used by RPC local service.<br/>
-Note that this config only takes effect when rpc.port_discovery is set to manual
-and <code>driver</code> is set to <code>ssl</code>."""
-
-rpc_ssl_server_port.label:
-"""RPC SSL Server Port"""
-
 desc_cluster.desc:
 """EMQX nodes can form a cluster to scale up the total capacity.<br/>
       Here holds the configs to instruct how individual nodes can discover each other."""