[Front Door] Add update func for backend and fix backend_host_header

src/front-door/azext_front_door/_help.py

@@ -98,6 +98,11 @@
     short-summary: Add a backend to a Front Door backend pool.
 """
 
+helps['network front-door backend-pool backend update'] = """
+    type: command
+    short-summary: Update a backend to a Front Door backend pool.
+"""
+
 helps['network front-door backend-pool backend list'] = """
     type: command
     short-summary: List backends of a Front Door backend pool.

src/front-door/azext_front_door/_params.py

@@ -129,9 +129,9 @@ def load_arguments(self, _):
             c.argument('https_port', type=int, help='HTTPS TCP port number.')
             c.argument('weight', type=int, help='Weight of this endpoint for load balancing purposes.')
             c.argument('private_link_alias', help='The Alias of the Private Link resource. Populating this optional field indicates that this backend is \'Private\'.')
-            c.argument('private_link_resource_id', help='The Resource Id of the Private Link. Populating this optional field indicates that this backend is \'Private\'.')
+            c.argument('private_link_resource_id', options_list=['--private-link-resource-id', '--resource-id'], help='The Resource Id of the Private Link. Populating this optional field indicates that this backend is \'Private\'.')
             c.argument('private_link_location', help='The location of the Private Link resource. Required only if \'privateLinkResourceId\' is populated.')
-            c.argument('private_link_approval_message', help='A custom message to be included in the approval request to connect to the Private Link.')
+            c.argument('private_link_approval_message', options_list=['--private-link-approval-message', '--approval-message'], help='A custom message to be included in the approval request to connect to the Private Link.')
             c.argument('backend_host_header', help='Host header sent to the backend.')
             c.argument('backend_pool_name', options_list='--pool-name', help='Name of the backend pool.')
             c.argument('index', type=int, help='Index of the backend to remove (starting with 1).')

src/front-door/azext_front_door/commands.py

@@ -105,6 +105,7 @@ def load_command_table(self, _):
 
     with self.command_group('network front-door backend-pool backend', frontdoor_sdk) as g:
         g.custom_command('add', 'add_fd_backend')
+        g.custom_command('update', 'update_fd_backend')
         g.custom_command('list', 'list_fd_backends')
         g.custom_command('remove', 'remove_fd_backend')
 

src/front-door/azext_front_door/tests/latest/recordings/test_front_door_basic_scenario.yaml

@@ -354,7 +354,7 @@ interactions:
       accept-language:
       - en-US
     method: GET
-    uri: https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/azfdtest.xyz/providers/Microsoft.Network/dnsZones/cdne2e.azfdtest.xyz/CNAME/clife000002?api-version=2018-05-01
+    uri: https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/azfdtest.xyz/providers/Microsoft.Network/dnsZones/cdne2e.azfdtest.xyz/cname/clife000002?api-version=2018-05-01
   response:
     body:
       string: '{"code":"NotFound","message":"The resource record ''clife000002'' does
@@ -404,7 +404,7 @@ interactions:
       accept-language:
       - en-US
     method: PUT
-    uri: https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/azfdtest.xyz/providers/Microsoft.Network/dnsZones/cdne2e.azfdtest.xyz/CNAME/clife000002?api-version=2018-05-01
+    uri: https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/azfdtest.xyz/providers/Microsoft.Network/dnsZones/cdne2e.azfdtest.xyz/cname/clife000002?api-version=2018-05-01
   response:
     body:
       string: '{"id":"\/subscriptions\/00000000-0000-0000-0000-000000000000\/resourceGroups\/azfdtest.xyz\/providers\/Microsoft.Network\/dnszones\/cdne2e.azfdtest.xyz\/CNAME\/clife000002","name":"clife000002","type":"Microsoft.Network\/dnszones\/CNAME","etag":"bd9175a9-254c-4134-8aa2-9d23be6112b0","properties":{"fqdn":"clife000002.cdne2e.azfdtest.xyz.","TTL":3600,"CNAMERecord":{"cname":"clifrontdoor000003.azurefd.net"},"targetResource":{},"provisioningState":"Succeeded"}}'

src/front-door/azext_front_door/tests/latest/test_backend_pool_scenarios.py

@@ -3,6 +3,7 @@
 # Licensed under the MIT License. See License.txt in the project root for license information.
 # --------------------------------------------------------------------------------------------
 from azure.cli.testsdk import (ScenarioTest, ResourceGroupPreparer)
+from knack.util import CLIError
 
 
 class BackendPoolScenarioTest(ScenarioTest):
@@ -37,3 +38,59 @@ def test_backend_pool_basic(self, resource_group):
                  checks=[
                      self.check('length(@)', 1),
                  ])
+
+    @ResourceGroupPreparer(location='westus')
+    def test_backend_pool_backend(self, resource_group):
+        self.kwargs.update({
+            'front_door': self.create_random_name('clifrontdoor', 20),
+            'bkp1': 'bkp1',
+            'lb1': 'lb1',
+            'pb1': 'pb1'
+        })
+        self.cmd('network front-door create -g {rg} -n {front_door} --backend-address 202.120.2.3')
+
+        self.cmd('network front-door backend-pool create -f {front_door} -g {rg} -n {bkp1} '
+                 '--address 202.120.2.3 '
+                 '--load-balancing DefaultLoadBalancingSettings '
+                 '--probe DefaultProbeSettings ',
+                 checks=[
+                     self.check('backends[0].address', '202.120.2.3'),
+                     self.check('ends_with(loadBalancingSettings.id, `DefaultLoadBalancingSettings`)', True),
+                     self.check('ends_with(healthProbeSettings.id, `DefaultProbeSettings`)', True)
+                 ])
+
+        # Fix Issue: https://github.com/Azure/azure-cli/issues/17269
+        self.cmd('network front-door backend-pool backend add '
+                 '--resource-group {rg} '
+                 '--front-door-name {front_door} '
+                 '--pool-name {bkp1} '
+                 '--address 202.120.2.3 '
+                 '--backend-host-header "" '
+                 '--disabled true '
+                 '--http-port 80 '
+                 '--https-port 443 '
+                 '--priority 2 '
+                 '--weight 1 ',
+                 checks=[
+                     self.check('backendHostHeader', '')
+                 ])
+
+        # Fix Iussue: https://github.com/Azure/azure-cli/issues/17270
+        self.cmd('network front-door backend-pool backend update '
+                 '--resource-group {rg} '
+                 '--front-door-name {front_door} '
+                 '--pool-name {bkp1} '
+                 '--index 2 '
+                 '--disabled false ',
+                 checks=[
+                     self.check('enabledState', 'Enabled'),
+                     self.check('backendHostHeader', '')
+                 ])
+
+        with self.assertRaises(CLIError):
+            self.cmd('network front-door backend-pool backend update '
+                    '--resource-group {rg} '
+                    '--front-door-name {front_door} '
+                    '--pool-name {bkp1} '
+                    '--index 3 '
+                    '--disabled false ')