[zebra.conf] Fix template issue with multiple lo addresses (#1662)

* [zebra.conf] Fix template issue with multiple lo addresses

* Add unitest for Loopback1

dockers/docker-fpm-quagga/zebra.conf.j2

@@ -40,11 +40,13 @@ ip route 0.0.0.0/0 {{ MGMT_INTERFACE[(name, prefix)]['gwaddr'] }} 200
 {% set lo_ipv6_addrs = [] %}
 {% if LOOPBACK_INTERFACE %}
 {%   for (name, prefix) in LOOPBACK_INTERFACE %}
-{%     if prefix | ipv6 %}
+{%     if name == 'Loopback0' %}
-{%       if lo_ipv6_addrs.append(prefix) %}
+{%       if prefix | ipv6 %}
-{%       endif %}
+{%         if lo_ipv6_addrs.append(prefix) %}
-{%     else %}
+{%         endif %}
-{%       if lo_ipv4_addrs.append(prefix) %}
+{%       else %}
+{%         if lo_ipv4_addrs.append(prefix) %}
+{%         endif %}
 {%       endif %}
 {%     endif %}
 {%   endfor %}

dockers/docker-orchagent/ipinip.json.j2

@@ -1,7 +1,7 @@
 {# only IPv4 decapsulation is supported #}
 {% set ipv4_loopback_addresses = [] %}
 {% for (name, prefix) in LOOPBACK_INTERFACE %}
-    {%- if prefix | ipv4 %}
+    {%- if prefix | ipv4 and name == 'Loopback0' %}
         {%- set ipv4_loopback_addresses = ipv4_loopback_addresses.append(prefix) %}
     {%- endif %}
 {% endfor %}

src/sonic-config-engine/tests/sample_output/bgpd.conf

@@ -0,0 +1,91 @@
+!
+! =========== Managed by sonic-cfggen DO NOT edit manually! ====================
+! generated by templates/quagga/bgpd.conf.j2 with config DB data
+! file: bgpd.conf
+!
+!
+hostname switch-t0
+password zebra
+log syslog informational
+log facility local4
+! enable password !
+!
+! bgp multiple-instance
+!
+route-map FROM_BGP_SPEAKER_V4 permit 10
+!
+route-map TO_BGP_SPEAKER_V4 deny 10
+!
+router bgp 65100
+  bgp log-neighbor-changes
+  bgp bestpath as-path multipath-relax
+  no bgp default ipv4-unicast
+  bgp graceful-restart
+  bgp router-id 10.1.0.32
+  network 10.1.0.32/32
+  address-family ipv6
+    network fc00:1::32/64
+  exit-address-family
+  network 192.168.0.1/27
+  neighbor 10.0.0.57 remote-as 64600
+  neighbor 10.0.0.57 description ARISTA01T1
+  address-family ipv4
+    neighbor 10.0.0.57 allowas-in 1
+    neighbor 10.0.0.57 activate
+    maximum-paths 64
+  exit-address-family
+  neighbor 10.0.0.59 remote-as 64600
+  neighbor 10.0.0.59 description ARISTA02T1
+  address-family ipv4
+    neighbor 10.0.0.59 allowas-in 1
+    neighbor 10.0.0.59 activate
+    maximum-paths 64
+  exit-address-family
+  neighbor 10.0.0.61 remote-as 64600
+  neighbor 10.0.0.61 description ARISTA03T1
+  address-family ipv4
+    neighbor 10.0.0.61 allowas-in 1
+    neighbor 10.0.0.61 activate
+    maximum-paths 64
+  exit-address-family
+  neighbor 10.0.0.63 remote-as 64600
+  neighbor 10.0.0.63 description ARISTA04T1
+  address-family ipv4
+    neighbor 10.0.0.63 allowas-in 1
+    neighbor 10.0.0.63 activate
+    maximum-paths 64
+  exit-address-family
+  neighbor fc00::7a remote-as 64600
+  neighbor fc00::7a description ARISTA03T1
+  address-family ipv6
+    neighbor fc00::7a allowas-in 1
+    neighbor fc00::7a activate
+    maximum-paths 64
+  exit-address-family
+  neighbor fc00::7e remote-as 64600
+  neighbor fc00::7e description ARISTA04T1
+  address-family ipv6
+    neighbor fc00::7e allowas-in 1
+    neighbor fc00::7e activate
+    maximum-paths 64
+  exit-address-family
+  neighbor fc00::72 remote-as 64600
+  neighbor fc00::72 description ARISTA01T1
+  address-family ipv6
+    neighbor fc00::72 allowas-in 1
+    neighbor fc00::72 activate
+    maximum-paths 64
+  exit-address-family
+  neighbor fc00::76 remote-as 64600
+  neighbor fc00::76 description ARISTA02T1
+  address-family ipv6
+    neighbor fc00::76 allowas-in 1
+    neighbor fc00::76 activate
+    maximum-paths 64
+  exit-address-family
+!
+maximum-paths 64
+!
+route-map ISOLATE permit 10
+set as-path prepend 65100
+!

src/sonic-config-engine/tests/sample_output/interfaces

@@ -15,6 +15,10 @@ iface lo inet6 static
     address fc00:1::32
     netmask 128
 #
+iface lo inet static
+    address 10.10.0.99
+    netmask 255.255.255.255
+#
 # The management network interface
 auto eth0
 iface eth0 inet static

src/sonic-config-engine/tests/sample_output/zebra.conf

@@ -0,0 +1,44 @@
+!
+! =========== Managed by sonic-cfggen DO NOT edit manually! ====================
+! generated by templates/quagga/zebra.conf.j2 using config DB data
+! file: zebra.conf
+!
+!
+hostname switch-t0
+password zebra
+enable password zebra
+!
+! Enable link-detect (default disabled)
+interface PortChannel01
+link-detect
+!
+interface PortChannel02
+link-detect
+!
+interface PortChannel03
+link-detect
+!
+interface PortChannel04
+link-detect
+!
+!
+! set static default route to mgmt gateway as a backup to learned default
+ip route 0.0.0.0/0 10.0.0.1 200
+!
+! Set ip source to loopback for bgp learned routes
+route-map RM_SET_SRC permit 10
+    set src 10.1.0.32
+!
+ 
+route-map RM_SET_SRC6 permit 10
+    set src fc00:1::32
+!
+ip protocol bgp route-map RM_SET_SRC
+!
+ipv6 protocol bgp route-map RM_SET_SRC6
+!
+!
+log syslog informational
+log facility local4
+!
+

src/sonic-config-engine/tests/t0-sample-graph.xml

@@ -153,7 +153,15 @@
           </a:Prefix>
           <a:PrefixStr>FC00:1::32/128</a:PrefixStr>
         </a:LoopbackIPInterface>
-      </LoopbackIPInterfaces>
+        <a:LoopbackIPInterface>
+          <Name>LoopbackIP1</Name>
+          <AttachTo>Loopback1</AttachTo>
+          <a:Prefix xmlns:b="Microsoft.Search.Autopilot.Evolution">
+            <b:IPPrefix>10.10.0.99/32</b:IPPrefix>
+          </a:Prefix>
+          <a:PrefixStr>10.10.0.99/32</a:PrefixStr>
+        </a:LoopbackIPInterface>
+       </LoopbackIPInterfaces>
       <ManagementIPInterfaces xmlns:a="http://schemas.datacontract.org/2004/07/Microsoft.Search.Autopilot.Evolution">
         <a:ManagementIPInterface>
           <Name>HostIP</Name>

src/sonic-config-engine/tests/test_j2files.py

@@ -21,6 +21,9 @@ class TestJ2Files(TestCase):
         print 'CMD: sonic-cfggen ' + argument
         return subprocess.check_output(self.script_file + ' ' + argument, shell=True)
     
+    def run_diff(self, file1, file2, diff):
+        return subprocess.check_output('diff {} {} >{}'.format(file1, file2, diff), shell=True)
+
     def test_interfaces(self):
         interfaces_template = os.path.join(self.test_dir, '..', '..', '..', 'files', 'image_config', 'interfaces', 'interfaces.j2')
         argument = '-m ' + self.t0_minigraph + ' -a \'{\"hwaddr\":\"e4:1d:2d:a5:f3:ad\"}\' -t ' + interfaces_template + ' > ' + self.output_file
@@ -59,6 +62,18 @@ class TestJ2Files(TestCase):
         self.run_script(argument)
         self.assertTrue(filecmp.cmp(os.path.join(self.test_dir, 'sample_output', 'lldpd.conf'), self.output_file))
 
+    def test_bgpd(self):
+        conf_template = os.path.join(self.test_dir, '..', '..', '..', 'dockers', 'docker-fpm-quagga', 'bgpd.conf.j2')
+        argument = '-m ' + self.t0_minigraph + ' -p ' + self.t0_port_config + ' -t ' + conf_template + ' > ' + self.output_file
+        self.run_script(argument)
+        self.assertTrue(filecmp.cmp(os.path.join(self.test_dir, 'sample_output', 'bgpd.conf'), self.output_file))
+
+    def test_zebra(self):
+        conf_template = os.path.join(self.test_dir, '..', '..', '..', 'dockers', 'docker-fpm-quagga', 'zebra.conf.j2')
+        argument = '-m ' + self.t0_minigraph + ' -p ' + self.t0_port_config + ' -t ' + conf_template + ' > ' + self.output_file
+        self.run_script(argument)
+        self.assertTrue(filecmp.cmp(os.path.join(self.test_dir, 'sample_output', 'zebra.conf'), self.output_file))
+
     def test_teamd(self):
 
         def test_render_teamd(self, pc, minigraph, sample_output):
@@ -94,7 +109,6 @@ class TestJ2Files(TestCase):
         self.run_script(argument)
 
         sample_output_file = os.path.join(self.test_dir, 'sample_output', 'ipinip.json')
-
         assert filecmp.cmp(sample_output_file, self.output_file)
 
     def test_msn27xx_32ports_buffers(self):