Adding Bouncer code for RIC-Benchmarking
[ric-app/bouncer.git] / Bouncer / src / xapp-mgmt / msgs_proc.cc
diff --git a/Bouncer/src/xapp-mgmt/msgs_proc.cc b/Bouncer/src/xapp-mgmt/msgs_proc.cc
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+/*
+# ==================================================================================
+# Copyright (c) 2020 HCL Technologies Limited.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==================================================================================
+*/
+
+#include "msgs_proc.hpp"
+
+
+bool XappMsgHandler::encode_subscription_delete_request(unsigned char* buffer, size_t *buf_len){
+
+       subscription_helper sub_helper;
+       sub_helper.set_request(0); // requirement of subscription manager ... ?
+       sub_helper.set_function_id(0);
+
+       subscription_delete e2ap_sub_req_del;
+
+         // generate the delete request pdu
+
+         bool res = e2ap_sub_req_del.encode_e2ap_subscription(&buffer[0], buf_len, sub_helper);
+         if(! res){
+           mdclog_write(MDCLOG_ERR, "%s, %d: Error encoding subscription delete request pdu. Reason = %s", __FILE__, __LINE__, e2ap_sub_req_del.get_error().c_str());
+           return false;
+         }
+
+       return true;
+
+}
+
+bool XappMsgHandler::decode_subscription_response(unsigned char* data_buf, size_t data_size){
+
+       subscription_helper subhelper;
+       subscription_response subresponse;
+       bool res = true;
+       E2AP_PDU_t *e2pdu = 0;
+
+       asn_dec_rval_t rval;
+
+       ASN_STRUCT_RESET(asn_DEF_E2AP_PDU, e2pdu);
+
+       rval = asn_decode(0,ATS_ALIGNED_BASIC_PER, &asn_DEF_E2AP_PDU, (void**)&e2pdu, data_buf, data_size);
+       switch(rval.code)
+       {
+               case RC_OK:
+                          //Put in Subscription Response Object.
+                          //asn_fprint(stdout, &asn_DEF_E2AP_PDU, e2pdu);
+                          break;
+               case RC_WMORE:
+                               mdclog_write(MDCLOG_ERR, "RC_WMORE");
+                               res = false;
+                               break;
+               case RC_FAIL:
+                               mdclog_write(MDCLOG_ERR, "RC_FAIL");
+                               res = false;
+                               break;
+               default:
+                               break;
+        }
+       ASN_STRUCT_FREE(asn_DEF_E2AP_PDU, e2pdu);
+       return res;
+
+}
+
+/*bool  XappMsgHandler::a1_policy_handler(char * message, int *message_len, a1_policy_helper &helper){
+
+  rapidjson::Document doc;
+  if (doc.Parse<kParseStopWhenDoneFlag>(message).HasParseError()){
+    mdclog_write(MDCLOG_ERR, "Error: %s, %d :: Could not decode A1 JSON message %s\n", __FILE__, __LINE__, message);
+    return false;
+  }
+
+  //Extract Operation
+  rapidjson::Pointer temp1("/operation");
+    rapidjson::Value * ref1 = temp1.Get(doc);
+    if (ref1 == NULL){
+      mdclog_write(MDCLOG_ERR, "Error : %s, %d:: Could not extract policy type id from %s\n", __FILE__, __LINE__, message);
+      return false;
+    }
+
+   helper.operation = ref1->GetString();
+
+  // Extract policy id type
+  rapidjson::Pointer temp2("/policy_type_id");
+  rapidjson::Value * ref2 = temp2.Get(doc);
+  if (ref2 == NULL){
+    mdclog_write(MDCLOG_ERR, "Error : %s, %d:: Could not extract policy type id from %s\n", __FILE__, __LINE__, message);
+    return false;
+  }
+   //helper.policy_type_id = ref2->GetString();
+    helper.policy_type_id = to_string(ref2->GetInt());
+
+    // Extract policy instance id
+    rapidjson::Pointer temp("/policy_instance_id");
+    rapidjson::Value * ref = temp.Get(doc);
+    if (ref == NULL){
+      mdclog_write(MDCLOG_ERR, "Error : %s, %d:: Could not extract policy type id from %s\n", __FILE__, __LINE__, message);
+      return false;
+    }
+    helper.policy_instance_id = ref->GetString();
+
+    if (helper.policy_type_id == "1" && helper.operation == "CREATE"){
+       helper.status = "OK";
+       Document::AllocatorType& alloc = doc.GetAllocator();
+
+       Value handler_id;
+       handler_id.SetString(helper.handler_id.c_str(), helper.handler_id.length(), alloc);
+
+       Value status;
+       status.SetString(helper.status.c_str(), helper.status.length(), alloc);
+
+
+       doc.AddMember("handler_id", handler_id, alloc);
+       doc.AddMember("status",status, alloc);
+       doc.RemoveMember("operation");
+       StringBuffer buffer;
+       Writer<StringBuffer> writer(buffer);
+       doc.Accept(writer);
+       strncpy(message,buffer.GetString(), buffer.GetLength());
+       *message_len = buffer.GetLength();
+       return true;
+    }
+    return false;
+}*/
+
+
+//For processing received messages.XappMsgHandler should mention if resend is required or not.
+void XappMsgHandler::operator()(rmr_mbuf_t *message, bool *resend){
+
+       if (message->len > MAX_RMR_RECV_SIZE){
+               mdclog_write(MDCLOG_ERR, "Error : %s, %d, RMR message larger than %d. Ignoring ...", __FILE__, __LINE__, MAX_RMR_RECV_SIZE);
+               return;
+       }
+      //a1_policy_helper helper;
+       bool res=false;
+       switch(message->mtype){
+               //need to fix the health check.
+               case (RIC_HEALTH_CHECK_REQ):
+                               message->mtype = RIC_HEALTH_CHECK_RESP;        // if we're here we are running and all is ok
+                               message->sub_id = -1;
+                               strncpy( (char*)message->payload, "Bouncer OK\n", rmr_payload_size( message) );
+                               *resend = true;
+                               break;
+
+               case (RIC_SUB_RESP):
+                       mdclog_write(MDCLOG_INFO, "Received subscription message of type = %d", message->mtype);
+                               unsigned char *me_id;
+                               if( (me_id = (unsigned char *) malloc( sizeof( unsigned char ) * RMR_MAX_MEID )) == NULL ) {
+                                       mdclog_write(MDCLOG_ERR, "Error :  %s, %d : malloc failed for me_id", __FILE__, __LINE__);
+                                       me_id = rmr_get_meid(message, NULL);
+                               } else {
+                                       rmr_get_meid(message, me_id);
+                               }
+                               if(me_id == NULL){
+                                       mdclog_write(MDCLOG_ERR, " Error :: %s, %d : rmr_get_meid failed me_id is NULL", __FILE__, __LINE__);
+                                       break;
+                               }
+                               mdclog_write(MDCLOG_INFO,"RMR Received MEID: %s",me_id);
+                               if(_ref_sub_handler !=NULL){
+                                       _ref_sub_handler->manage_subscription_response(message->mtype, reinterpret_cast< char const* >(me_id));
+                               } else {
+                                       mdclog_write(MDCLOG_ERR, " Error :: %s, %d : Subscription handler not assigned in message processor !", __FILE__, __LINE__);
+                               }
+                               *resend = false;
+                               if (me_id != NULL) {
+                                       mdclog_write(MDCLOG_INFO, "Free RMR Received MEID memory: %s(0x%x)", me_id, me_id);
+                                       free(me_id);
+                               }
+                               break;
+               case (RIC_INDICATION):
+                       mdclog_write(MDCLOG_INFO, "Received indication message of type = %d", message->mtype);
+                        message->mtype = RIC_CONTROL_REQ;        // if we're here we are running and all is ok
+                        message->sub_id = -1;
+                        strncpy((char*)message->payload, "Bouncer Control OK\n", rmr_payload_size(message));
+                        *resend = true;
+                        break;
+
+       /*case A1_POLICY_REQ:
+
+                   mdclog_write(MDCLOG_INFO, "In Message Handler: Received A1_POLICY_REQ.");
+                       helper.handler_id = xapp_id;
+
+                       res = a1_policy_handler((char*)message->payload, &message->len, helper);
+                       if(res){
+                               message->mtype = A1_POLICY_RESP;        // if we're here we are running and all is ok
+                               message->sub_id = -1;
+                               *resend = true;
+                       }
+                       break;*/
+
+       default:
+               {
+                       mdclog_write(MDCLOG_ERR, "Error :: Unknown message type %d received from RMR", message->mtype);
+                       *resend = false;
+               }
+       }
+
+       return;
+
+};
+
+