From 9d1f66bca7829e688eb11e80470a11b517da1d2e Mon Sep 17 00:00:00 2001
From: Baorong Liu <96146196+baorliu@users.noreply.github.com>
Date: Wed, 25 Jan 2023 14:28:03 -0800
Subject: [PATCH] [bfdorch] add local discriminator to state DB (#2629)

add local discriminator to state DB for "show bfd summary/peer" to show it.
---
 orchagent/bfdorch.cpp |  4 +++-
 tests/test_bfd.py     | 22 +++++++++++-----------
 2 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/orchagent/bfdorch.cpp b/orchagent/bfdorch.cpp
index 562fbf8c2219..f242645b353b 100644
--- a/orchagent/bfdorch.cpp
+++ b/orchagent/bfdorch.cpp
@@ -306,9 +306,11 @@ bool BfdOrch::create_bfd_session(const string& key, const vector<FieldValueTuple
     attrs.emplace_back(attr);
     fvVector.emplace_back("type", session_type_lookup.at(bfd_session_type));
 
+    uint32_t local_discriminator = bfd_gen_id();
     attr.id = SAI_BFD_SESSION_ATTR_LOCAL_DISCRIMINATOR;
-    attr.value.u32 = bfd_gen_id();
+    attr.value.u32 = local_discriminator;
     attrs.emplace_back(attr);
+    fvVector.emplace_back("local_discriminator", to_string(local_discriminator));
 
     attr.id = SAI_BFD_SESSION_ATTR_UDP_SRC_PORT;
     attr.value.u32 = bfd_src_port();
diff --git a/tests/test_bfd.py b/tests/test_bfd.py
index bd1592f53662..3a087e201172 100644
--- a/tests/test_bfd.py
+++ b/tests/test_bfd.py
@@ -68,7 +68,7 @@ def test_addRemoveBfdSession(self, dvs):
 
         # Check STATE_DB entry related to the BFD session
         expected_sdb_values = {"state": "Down", "type": "async_active", "local_addr" : "10.0.0.1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false", "local_discriminator" : "1"}
         self.check_state_bfd_session_value("default|default|10.0.0.2", expected_sdb_values)
 
         # Send BFD session state notification to update BFD session state
@@ -108,7 +108,7 @@ def test_addRemoveBfdSession_ipv6(self, dvs):
 
         # Check STATE_DB entry related to the BFD session
         expected_sdb_values = {"state": "Down", "type": "async_active", "local_addr" : "2000::1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false", "local_discriminator" : "2"}
         self.check_state_bfd_session_value("default|default|2000::2", expected_sdb_values)
 
         # Send BFD session state notification to update BFD session state
@@ -150,7 +150,7 @@ def test_addRemoveBfdSession_interface(self, dvs):
 
         # Check STATE_DB entry related to the BFD session
         expected_sdb_values = {"state": "Down", "type": "async_active", "local_addr" : "10.0.0.1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false", "local_discriminator" : "3"}
         self.check_state_bfd_session_value("default|Ethernet0|10.0.0.2", expected_sdb_values)
 
         # Send BFD session state notification to update BFD session state
@@ -192,7 +192,7 @@ def test_addRemoveBfdSession_txrx_interval(self, dvs):
 
         # Check STATE_DB entry related to the BFD session
         expected_sdb_values = {"state": "Down", "type": "async_active", "local_addr" : "10.0.0.1", "tx_interval" :"300",
-                                        "rx_interval" : "500", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "500", "multiplier" : "10", "multihop": "false", "local_discriminator" : "4"}
         self.check_state_bfd_session_value("default|default|10.0.0.2", expected_sdb_values)
 
         # Send BFD session state notification to update BFD session state
@@ -233,7 +233,7 @@ def test_addRemoveBfdSession_multiplier(self, dvs):
 
         # Check STATE_DB entry related to the BFD session
         expected_sdb_values = {"state": "Down", "type": "async_active", "local_addr" : "10.0.0.1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "5", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "5", "multihop": "false", "local_discriminator" : "5"}
         self.check_state_bfd_session_value("default|default|10.0.0.2", expected_sdb_values)
 
         # Send BFD session state notification to update BFD session state
@@ -274,7 +274,7 @@ def test_addRemoveBfdSession_multihop(self, dvs):
 
         # Check STATE_DB entry related to the BFD session
         expected_sdb_values = {"state": "Down", "type": "async_active", "local_addr" : "10.0.0.1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "true"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "true", "local_discriminator" : "6"}
         self.check_state_bfd_session_value("default|default|10.0.0.2", expected_sdb_values)
 
         # Send BFD session state notification to update BFD session state
@@ -314,7 +314,7 @@ def test_addRemoveBfdSession_type(self, dvs):
 
         # Check STATE_DB entry related to the BFD session
         expected_sdb_values = {"state": "Down", "type": "demand_active", "local_addr" : "10.0.0.1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false", "local_discriminator" : "7"}
         self.check_state_bfd_session_value("default|default|10.0.0.2", expected_sdb_values)
 
         # Send BFD session state notification to update BFD session state
@@ -357,7 +357,7 @@ def test_multipleBfdSessions(self, dvs):
         # Check STATE_DB entry related to the BFD session 1
         key_state_db1 = "default|default|10.0.0.2"
         expected_sdb_values1 = {"state": "Down", "type": "async_active", "local_addr" : "10.0.0.1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false", "local_discriminator" : "8"}
         self.check_state_bfd_session_value(key_state_db1, expected_sdb_values1)
 
         # Create BFD session 2
@@ -385,7 +385,7 @@ def test_multipleBfdSessions(self, dvs):
         # Check STATE_DB entry related to the BFD session 2
         key_state_db2 = "default|default|10.0.1.2"
         expected_sdb_values2 = {"state": "Down", "type": "async_active", "local_addr" : "10.0.0.1", "tx_interval" :"300",
-                                        "rx_interval" : "500", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "500", "multiplier" : "10", "multihop": "false", "local_discriminator" : "9"}
         self.check_state_bfd_session_value(key_state_db2, expected_sdb_values2)
 
         # Create BFD session 3
@@ -411,7 +411,7 @@ def test_multipleBfdSessions(self, dvs):
         # Check STATE_DB entry related to the BFD session 3
         key_state_db3 = "default|default|2000::2"
         expected_sdb_values3 = {"state": "Down", "type": "demand_active", "local_addr" : "2000::1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false", "local_discriminator" : "10"}
         self.check_state_bfd_session_value(key_state_db3, expected_sdb_values3)
 
         # Create BFD session 4
@@ -437,7 +437,7 @@ def test_multipleBfdSessions(self, dvs):
         # Check STATE_DB entry related to the BFD session 4
         key_state_db4 = "default|default|3000::2"
         expected_sdb_values4 = {"state": "Down", "type": "async_active", "local_addr" : "3000::1", "tx_interval" :"1000",
-                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false"}
+                                        "rx_interval" : "1000", "multiplier" : "10", "multihop": "false", "local_discriminator" : "11"}
         self.check_state_bfd_session_value(key_state_db4, expected_sdb_values4)
 
         # Update BFD session states