show vnet routes all. (#2341) (#2472)

orignal PR #2341 
The status information is retrieved using the status of the prefix from Application DB.
The status field can have 3 values.
Empty : Configured but not in Application DB.
Active : Configured and active in ASIC.
Inacive : Configured but not in ASIC due to lack of BFD session with endpoint

How to verify it
Add a vxlan tunnel route with single Endpoint monitoring. run the command to see active/ inactive based on BFD session state.
if multiple Endpoints are present then atleast one has to be Up for status to show up as active.
if endpoint monitoring is not enabled then status would show up as active.

Previous command output (if the output of a command-line utility has changed)
vnet name prefix endpoint mac address vni

Vnet1 10.2.1.0/24 200.3.152.32
Vnet_v4_in_v4-0 150.62.191.1/32 100.251.99.1,100.251.99.2,100.251.99.3
Vnet_v6_in_v6-0 fddd:a150:a251::a6:1/128 fddd:a100:a251::a10:1,fddd:a101:a251::a10:1
test_v4_in_v4-0 160.62.191.1/32 100.251.7.1
test_v4_in_v4-0 160.63.191.1/32 100.251.7.2
test_v4_in_v4-0 160.64.191.1/32 100.251.7.3

New command output (if the output of a command-line utility has changed)
vnet name prefix endpoint mac address vni status

Vnet1 10.2.1.0/24 200.3.152.32 active
Vnet_v4_in_v4-0 150.62.191.1/32 100.251.99.1,100.251.99.2,100.251.99.3
Vnet_v6_in_v6-0 fddd:a150:a251::a6:1/128 fddd:a100:a251::a10:1,fddd:a101:a251::a10:1 inactive
test_v4_in_v4-0 160.62.191.1/32 100.251.7.1 inactive
test_v4_in_v4-0 160.63.191.1/32 100.251.7.2 inactive
test_v4_in_v4-0 160.64.191.1/32 100.251.7.3 inactive

doc/Command-Reference.md

@@ -9482,7 +9482,7 @@ This command displays vnet neighbor information about all the vnets configured i
 
 **show vnet routes all**
 
-This command displays all routes information about all the vnets configured in the device.
+This command displays all routes information about all the vnets configured in the device. It also shows the status of the routes which may or may not be active.
 
 - Usage:
 
@@ -9499,10 +9499,11 @@ This command displays all routes information about all the vnets configured in t
   Vnet_2000    100.100.3.0/24             Ethernet52
   Vnet_3000    100.100.4.0/24             Vlan2000
 
-  vnet name    prefix          endpoint    mac address        vni
-  -----------  --------------  ----------  -----------------  -----
-  Vnet_2000    100.100.1.1/32  10.10.10.1
-  Vnet_3000    100.100.2.1/32  10.10.10.2  00:00:00:00:03:04
+  vnet name    prefix          endpoint    mac address        vni    status
+  -----------  --------------  ----------  -----------------  -----  -------
+  Vnet_2000    100.100.1.1/32  10.10.10.1                            active
+  Vnet_3000    100.100.2.1/32  10.10.10.2  00:00:00:00:03:04         inactive
+  Vnet_3000    100.100.2.3/32  10.10.10.6  00:00:00:00:03:04
   ```
 
 **show vnet routes tunnel**

show/vnet.py

@@ -207,7 +207,8 @@ def all():
     """Show all vnet routes"""
     appl_db = SonicV2Connector()
     appl_db.connect(appl_db.APPL_DB)
-
+    state_db = SonicV2Connector()
+    state_db.connect(state_db.STATE_DB)
     header = ['vnet name', 'prefix', 'nexthop', 'interface']
 
     # Fetching data from appl_db for VNET ROUTES
@@ -227,7 +228,7 @@ def all():
 
     click.echo()
 
-    header = ['vnet name', 'prefix', 'endpoint', 'mac address', 'vni']
+    header = ['vnet name', 'prefix', 'endpoint', 'mac address', 'vni', 'status']
 
     # Fetching data from appl_db for VNET TUNNEL ROUTES
     vnet_rt_keys = appl_db.keys(appl_db.APPL_DB, "VNET_ROUTE_TUNNEL_TABLE:*")
@@ -237,10 +238,14 @@ def all():
     for k in vnet_rt_keys:
         r = []
         r.extend(k.split(":", 2)[1:])
+        state_db_key = '|'.join(k.split(":",2))
         val = appl_db.get_all(appl_db.APPL_DB, k)
+        val_state = state_db.get_all(state_db.STATE_DB, state_db_key)
         r.append(val.get('endpoint'))
         r.append(val.get('mac_address'))
         r.append(val.get('vni'))
+        if val_state:
+            r.append(val_state.get('state'))
         table.append(r)
 
     click.echo(tabulate(table, header))

tests/mock_tables/appl_db.json

@@ -313,5 +313,17 @@
     },
     "TUNNEL_ROUTE_TABLE:10.3.1.1": {
         "alias": "Vlan1000"
+    },
+    "VNET_ROUTE_TUNNEL_TABLE:test_v4_in_v4-0:160.163.191.1/32": {
+        "endpoint":"100.251.7.1"
+    },
+    "VNET_ROUTE_TUNNEL_TABLE:Vnet_v6_in_v6-0:fddd:a156:a251::a6:1/128": {
+        "endpoint": "fddd:a100:a251::a10:1,fddd:a101:a251::a10:1"
+    },
+    "VNET_ROUTE_TUNNEL_TABLE:test_v4_in_v4-0:160.162.191.1/32": {
+        "endpoint":"100.251.7.1"
+    },
+    "VNET_ROUTE_TUNNEL_TABLE:test_v4_in_v4-0:160.164.191.1/32": {
+        "endpoint":"100.251.7.1"
     }
 }

tests/mock_tables/state_db.json

@@ -875,5 +875,17 @@
     },
     "LINK_TRAINING|Ethernet112": {
          "status": "off"
+    },
+    "VNET_ROUTE_TUNNEL_TABLE|test_v4_in_v4-0|160.162.191.1/32": {
+        "active_endpoints":"100.251.7.1",
+        "state":"active"
+    },
+    "VNET_ROUTE_TUNNEL_TABLE|test_v4_in_v4-0|160.163.191.1/32": {
+        "active_endpoints":"100.251.7.1",
+        "state":"active"
+    },
+    "VNET_ROUTE_TUNNEL_TABLE|Vnet_v6_in_v6-0|fddd:a156:a251::a6:1/128": {
+        "active_endpoints":"fddd:a100:a251::a10:1,fddd:a101:a251::a10:1",
+        "state":"active"
     }
 }

tests/show_vnet_test.py

@@ -0,0 +1,29 @@
+import os
+from click.testing import CliRunner
+from utilities_common.db import Db
+import show.main as show
+
+class TestShowVnetRoutesAll(object):
+    @classmethod
+    def setup_class(cls):
+        print("SETUP")
+        os.environ["UTILITIES_UNIT_TESTING"] = "1"
+
+    def test_show_vnet_routes_all_basic(self):
+        runner = CliRunner()
+        db = Db()
+
+        result = runner.invoke(show.cli.commands['vnet'].commands['routes'].commands['all'], [], obj=db)
+        assert result.exit_code == 0
+        expected_output = """\
+vnet name    prefix    nexthop    interface
+-----------  --------  ---------  -----------
+
+vnet name        prefix                    endpoint                                     mac address    vni    status
+---------------  ------------------------  -------------------------------------------  -------------  -----  --------
+Vnet_v6_in_v6-0  fddd:a156:a251::a6:1/128  fddd:a100:a251::a10:1,fddd:a101:a251::a10:1                        active
+test_v4_in_v4-0  160.162.191.1/32          100.251.7.1                                                        active
+test_v4_in_v4-0  160.163.191.1/32          100.251.7.1                                                        active
+test_v4_in_v4-0  160.164.191.1/32          100.251.7.1
+"""
+        assert result.output == expected_output