[portsorch] remove port OID from saiOidToAlias map on port deletion (sonic-net#2483)

- What I did

I fixed an issue that on port deletion (port breakout scenario), the port OID is not removed from saiOidToAlias map, resulting in getPort returns true when querying non-existing port OID but the Port structure is not filled with correct values. Also lowered the log level on receiving non-existing port operational status update

- Why I did it

To fix errors in the log during breakout:

Oct  4 13:15:45.654396 r-bulldog-04 NOTICE swss#orchagent: :- updatePortOperStatus: Port  oper state set from unknown to down
Oct  4 13:15:45.654773 r-bulldog-04 ERR swss#orchagent: :- set: switch id oid:0x0 doesn't exist
Oct  4 13:15:45.654773 r-bulldog-04 WARNING swss#orchagent: :- setHostIntfsOperStatus: Failed to set operation status DOWN to host interface
Oct  4 13:15:45.654773 r-bulldog-04 ERR swss#orchagent: :- updatePortOperStatus: Failed to set host interface  operational status down
Oct  4 13:15:45.654773 r-bulldog-04 WARNING swss#orchagent: :- flushFDBEntries: Couldn't flush FDB. Bridge port OID: 0x0 bvid:0,

- How I verified it
Run UT, run manual port breakout tests.

Signed-off-by: Stepan Blyschak <[email protected]>

Author: stepanblyschak

orchagent/portsorch.cpp

@@ -753,7 +753,10 @@ bool PortsOrch::getPort(sai_object_id_t id, Port &port)
     }
     else
     {
-        getPort(itr->second, port);
+        if (!getPort(itr->second, port))
+        {
+            SWSS_LOG_THROW("Inconsistent saiOidToAlias map and m_portList map: oid=%" PRIx64, id);
+        }
         return true;
     }
 
@@ -3330,6 +3333,7 @@ void PortsOrch::doPortTask(Consumer &consumer)
 
             /* Delete port from port list */
             m_portList.erase(alias);
+            saiOidToAlias.erase(port_id);
         }
         else
         {
@@ -5630,7 +5634,7 @@ void PortsOrch::doTask(NotificationConsumer &consumer)
 
             if (!getPort(id, port))
             {
-                SWSS_LOG_ERROR("Failed to get port object for port id 0x%" PRIx64, id);
+                SWSS_LOG_NOTICE("Got port state change for port id 0x%" PRIx64 " which does not exist, possibly outdated event", id);
                 continue;
             }
 

tests/mock_tests/portsorch_ut.cpp

@@ -862,7 +862,7 @@ namespace portsorch_test
     * updated to DB.
     */
     TEST_F(PortsOrchTest, PortOperStatusIsUpAndOperSpeedIsZero)
-    {   
+    {
         Table portTable = Table(m_app_db.get(), APP_PORT_TABLE_NAME);
 
         // Get SAI default ports to populate DB
@@ -887,7 +887,7 @@ namespace portsorch_test
         Port port;
         gPortsOrch->getPort("Ethernet0", port);
         ASSERT_TRUE(port.m_oper_status != SAI_PORT_OPER_STATUS_UP);
-        
+
         // save original api since we will spy
         auto orig_port_api = sai_port_api;
         sai_port_api = new sai_port_api_t();
@@ -905,14 +905,14 @@ namespace portsorch_test
                     // Return 0 for port operational speed
                     attrs[0].value.u32 = 0;
                 }
-                
+
                 return (sai_status_t)SAI_STATUS_SUCCESS;
             }
         );
 
         auto exec = static_cast<Notifier *>(gPortsOrch->getExecutor("PORT_STATUS_NOTIFICATIONS"));
         auto consumer = exec->getNotificationConsumer();
-        
+
         // mock a redis reply for notification, it notifies that Ehernet0 is going to up
         mockReply = (redisReply *)calloc(sizeof(redisReply), 1);
         mockReply->type = REDIS_REPLY_ARRAY;
@@ -934,7 +934,7 @@ namespace portsorch_test
         // trigger the notification
         consumer->readData();
         gPortsOrch->doTask(*consumer);
-        mockReply = nullptr; 
+        mockReply = nullptr;
 
         gPortsOrch->getPort("Ethernet0", port);
         ASSERT_TRUE(port.m_oper_status == SAI_PORT_OPER_STATUS_UP);