Update Get-AzHost cmdlet to return Host for -ResourceId parameterset (#19770)

* Update `Get-AzHost` cmdlet to return Host for -ResourceId parameterset

* Added Test Case

* Added Example for `Get-AzHost` cmdlet

Author: pselugar

src/Compute/Compute.Test/ScenarioTests/VirtualMachineTests.cs

@@ -234,7 +234,14 @@ public void VirtualMachineGetStatusWithHealhtExtension()
         {
             TestRunner.RunTestScript("Test-VirtualMachineGetStatusWithHealhtExtension");
         }
-        
+
+        [Fact]
+        [Trait(Category.AcceptanceType, Category.CheckIn)]
+        public void TestVirtualMachineGetHost()
+        {
+            TestRunner.RunTestScript("Test-VirtualMachineGetHost");
+        }
+
         [Fact]
         [Trait(Category.AcceptanceType, Category.CheckIn)]
         public void TestVirtualMachineGetStatusWithAssignedHost()

src/Compute/Compute.Test/ScenarioTests/VirtualMachineTests.ps1

@@ -3132,6 +3132,45 @@ function Test-VirtualMachineGetStatusWithHealhtExtension
     }
 }
 
+<#
+.SYNOPSIS
+Test Virtual Machines
+#>
+function Test-VirtualMachineGetHost
+{
+    param ($loc)
+    # Setup
+    $rgname = Get-ComputeTestResourceName
+
+    try
+    {
+        # Common
+        $loc = Get-Location "Microsoft.Resources" "resourceGroups" "East US 2 EUAP";
+        $loc = $loc.Replace(' ', '');
+        
+        # Creating the resource group
+        New-AzResourceGroup -Name $rgname -Location $loc -Force;
+
+        # Hostgroup and Hostgroupname
+        $hostGroupName = $rgname + "HostGroup";
+        New-AzHostGroup -ResourceGroupName $rgname -Name $hostGroupName -Location $loc -PlatformFaultDomain 1 -Zone "2" -Tag @{key1 = "val1"};
+
+        $Sku = "ESv3-Type1";
+        $hostGroup = Get-AzHostGroup -ResourceGroupName $rgname -Name $hostGroupName;
+        $hostName = $rgname + "Host";
+        New-AzHost -ResourceGroupName $rgname -HostGroupName $hostGroupName -Name $hostName -Location $loc -Sku $Sku -Tag @{key1  = "val2"};
+        $dedicatedHost = Get-AzHost -ResourceGroupName $rgname -HostGroupName $hostGroupName -Name $hostName;
+        $host2 = Get-AzHost -ResourceId $dedicatedHost.Id;
+        
+        Assert-NotNull $host2.Id;
+    }
+    finally
+    {
+        # Cleanup
+        Clean-ResourceGroup $rgname
+    }
+}
+
 <#
 .SYNOPSIS
 Test Virtual Machines

src/Compute/Compute.Test/SessionRecords/Microsoft.Azure.Commands.Compute.Test.ScenarioTests.VirtualMachineTests/TestVirtualMachineGetHost.json

@@ -20,6 +20,7 @@
 
 -->
 ## Upcoming Release
+* Updated `Get-AzHost` cmdlet logic to return Host for `-ResourceId` parameterset.
 * For `New-AzGalleryImageVersion`, update property mapping for `Encryption`. 
 
 ## Version 4.32.0

src/Compute/Compute/ChangeLog.md

@@ -48,8 +48,8 @@ public override void ExecuteCmdlet()
                 {
                     case "ResourceIdParameter":
                         resourceGroupName = GetResourceGroupName(this.ResourceId);
-                        hostGroupName = GetResourceName(this.ResourceId, "Microsoft.Compute/hosts", "hosts");
-                        hostName = GetResourceName(this.ResourceId, "Microsoft.Compute/hosts", "hosts");
+                        hostGroupName = GetResourceName(this.ResourceId, "Microsoft.Compute/hostGroups", "hosts");
+                        hostName = GetInstanceId(this.ResourceId, "Microsoft.Compute/hostGroups", "hosts");
                         break;
                     default:
                         resourceGroupName = this.ResourceGroupName;

src/Compute/Compute/Generated/DedicatedHost/DedicatedHostGetMethod.cs

@@ -113,6 +113,38 @@ myrg01              myhost02   eastus {[key1, val2]} ESv3-Type1  1
 
 This command returns all hosts in the given host group.
 
+### Example 4: This command retuns a Host for provided -ResourceId.
+```powershell
+$rgname = "rgname"
+$loc = "eastus"
+$hostGroupName = $rgname + "HostGroup"
+$hostName = $rgname + "Host"
+$Sku = "ESv3-Type1"
+# Create Hostgroup and Hostgroupname
+New-AzHostGroup -ResourceGroupName $rgname -Name $hostGroupName -Location $loc -PlatformFaultDomain 1 -Zone "2"
+New-AzHost -ResourceGroupName $rgname -HostGroupName $hostGroupName -Name $hostName -Location $loc -Sku $Sku
+
+# Fetch Host using -ResouceId
+$dedicatedHost = Get-AzHost -ResourceGroupName $rgname -HostGroupName $hostGroupName -Name $hostName
+$host = Get-AzHost -ResourceId $dedicatedHost.Id
+```
+
+```output
+ResourceGroupName    : rgname
+PlatformFaultDomain  : 0
+AutoReplaceOnFailure : True
+HostId               : 0730655b-051d-4559-a83a-5d579d15fec2
+ProvisioningTime     : 10/14/2022 7:28:47 AM
+ProvisioningState    : Succeeded
+Sku                  :
+  Name               : ESv3-Type1
+Id                   : /subscriptions/e37510d7-33b6-4676-886f-ee75bcc01871/resourceGroups/rgname/providers/Microsoft.Compute/hostGroups/rgnameHostGroup/hosts/rgnameHost
+Name                 : rgnameHost
+Type                 : Microsoft.Compute/hostGroups/hosts
+Location             : eastus
+Tags                 : {}
+```
+
 ## PARAMETERS
 
 ### -DefaultProfile