docs(gw): enrich README.md

apps/emqx_gateway/README.md

@@ -22,9 +22,31 @@
 
 ## ROADMAP
 
-Gateway v0.1: Management support
-
-Gateway v0.2: Conn/Frame/Protocol Template
+Gateway v0.1: "Basic Functionals"
+    - Management support
+    - Conn/Frame/Protocol Template
+    - Support Stomp/MQTT-SN/CoAP/LwM2M/ExProto
+
+Gateway v0.2: "Integration & Friendly Management"
+    - Hooks & Metrics & Statistic
+    - HTTP APIs
+    - Management in the cluster
+    - Integrate with AuthN
+    - Integrate with `emqx_config`
+    - Improve hocon config
+    - Mountpoint & ClientInfo's Metadata
+    - The Concept Review
+
+Gateway v0.3: "Fault tolerance and high availability"
+    - The restart mechanism for gateway-instance
+    - Consistency of cluster state
+    - Configuration hot update
+
+Gateway v1.0: "Best practices for each type of protocol"
+    - CoAP
+    - Stomp
+    - MQTT-SN
+    - LwM2M
 
 ### Compatible with EMQ X
 

apps/emqx_gateway/src/emqx_gateway_cm.erl

@@ -246,15 +246,24 @@ open_session(_Type, false = _CleanStart,
     {error, not_supported_now}.
 
 %% @private
-create_session(_Type, ClientInfo, ConnInfo, CreateSessionFun) ->
+create_session(Type, ClientInfo, ConnInfo, CreateSessionFun) ->
     try
         Session = emqx_gateway_utils:apply(
                     CreateSessionFun,
                     [ClientInfo, ConnInfo]
                    ),
-        %% TODO: v0.2 session metrics & hooks
-        %ok = emqx_metrics:inc('session.created'),
-        %ok = emqx_hooks:run('session.created', [ClientInfo, emqx_session:info(Session)]),
+        ok = emqx_gateway_metrics:inc(Type, 'session.created'),
+        SessionInfo = case is_record(Session, emqx_session) of
+                          true -> emqx_session:info(Session);
+                          _ ->
+                              case is_map(Session) of
+                                  false ->
+                                      throw(session_structure_should_be_map);
+                                  _ ->
+                                      Session
+                              end
+                      end,
+        ok = emqx_hooks:run('session.created', [ClientInfo, SessionInfo]),
         Session
     catch
         Class : Reason : Stk ->