ctt controller - add ctt state to flow

Author: jaroslavpesek

include/ipfixprobe/flowifc.hpp

@@ -265,6 +265,7 @@ struct Flow : public Record {
     uint64_t flow_hash;
     uint64_t flow_hash_ctt; /**< Flow hash for CTT. */
     bool ctt_valid; /**< CTT validity flag. */
+    int ctt_state; /**< CTT - offload or not. */
     PluginsStatus plugins_status; /**< Statuses of the process plugins for this flow, used to check
                                      if the flow process plugins requires all available data, only
                                      metadata or nothing of this. */

storage/cache-ctt.hpp

@@ -37,16 +37,31 @@ class NHTFlowCacheCTT : public NHTFlowCache
    // override post_create method
    int plugins_post_create(Flow &rec, Packet &pkt) {
       int ret = StoragePlugin::plugins_post_create(rec, pkt);
+      rec.ctt_state = static_cast<int>(CttController::OffloadMode::NO_OFFLOAD);
       if (no_data_required(rec)) {
          m_ctt_controller.create_record(rec.flow_hash_ctt, rec.time_first);
-      } else if (all_data_required(rec)) {
-         m_ctt_controller.create_record(rec.flow_hash_ctt, rec.time_first);
+         rec.ctt_state = static_cast<int>(CttController::OffloadMode::PACKET_OFFLOAD);
       }
+      return ret;
+   }
 
-
+   // override post_update method
+   int plugins_post_update(Flow &rec, Packet &pkt) {
+      int ret = StoragePlugin::plugins_post_update(rec, pkt);
+      if (no_data_required(rec) && (rec.ctt_state == static_cast<int>(CttController::OffloadMode::NO_OFFLOAD))) {
+         m_ctt_controller.create_record(rec.flow_hash_ctt, rec.time_first);
+         rec.ctt_state = static_cast<int>(CttController::OffloadMode::PACKET_OFFLOAD);
+      }
       return ret;
    }
 
+   // override pre_export method
+   void plugins_pre_export(Flow &rec) {
+      StoragePlugin::plugins_pre_export(rec);
+      m_ctt_controller.export_record(rec.flow_hash_ctt);
+   }
+
+
 private:
    std::string m_dev;
    CttController m_ctt_controller;