Fix issue: OA isn't aborted on receiving shutdown after fatal event

Signed-off-by: Stephen Sun <stephens@nvidia.com>

Author: stephenxs

orchagent/notifications.cpp

@@ -37,6 +37,11 @@ void on_switch_shutdown_request(sai_object_id_t switch_id)
     /* TODO: Later a better restart story will be told here */
     SWSS_LOG_ERROR("Syncd stopped");
 
+    if (gSwitchOrch->isFatalEventReceived())
+    {
+        abort();
+    }
+
     /*
         The quick_exit() is used instead of the exit() to avoid a following data race:
             * the exit() calls the destructors for global static variables (e.g.BufferOrch::m_buffer_type_maps)

orchagent/switchorch.cpp

@@ -1121,6 +1121,11 @@ void SwitchOrch::onSwitchAsicSdkHealthEvent(sai_object_id_t switch_id,
     m_asicSdkHealthEventTable->set(time_ss.str(),values);
 
     event_publish(g_events_handle, "asic-sdk-health-event", &params);
+
+    if (severity == SAI_SWITCH_ASIC_SDK_HEALTH_SEVERITY_FATAL)
+    {
+        m_fatalEventCount++;
+    }
 }
 
 bool SwitchOrch::setAgingFDB(uint32_t sec)

orchagent/switchorch.h

@@ -58,6 +58,12 @@ class SwitchOrch : public Orch
                                     sai_switch_asic_sdk_health_category_t category,
                                     sai_switch_health_data_t data,
                                     const sai_u8_list_t &description);
+
+    inline bool isFatalEventReceived() const
+        {
+            return (m_fatalEventCount != 0);
+        }
+
 private:
     void doTask(Consumer &consumer);
     void doTask(swss::SelectableTimer &timer);
@@ -120,6 +126,7 @@ class SwitchOrch : public Orch
     std::set<sai_switch_attr_t> m_supportedAsicSdkHealthEventAttributes;
     std::string m_eliminateEventsSha;
     swss::SelectableTimer* m_eliminateEventsTimer = nullptr;
+    uint32_t m_fatalEventCount = 0;
 
     void initAsicSdkHealthEventNotification();
     sai_status_t registerAsicSdkHealthEventCategories(sai_switch_attr_t saiSeverity, const std::string &severityString, const std::string &suppressed_category_list="");