virtualmachines.go

package compute

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
//
// Code generated by Microsoft (R) AutoRest Code Generator.
// Changes may cause incorrect behavior and will be lost if the code is regenerated.

import (
	"context"
	"github.com/Azure/go-autorest/autorest"
	"github.com/Azure/go-autorest/autorest/azure"
	"github.com/Azure/go-autorest/autorest/validation"
	"github.com/Azure/go-autorest/tracing"
	"net/http"
)

// VirtualMachinesClient is the compute Client
type VirtualMachinesClient struct {
	BaseClient
}

// NewVirtualMachinesClient creates an instance of the VirtualMachinesClient client.
func NewVirtualMachinesClient(subscriptionID string) VirtualMachinesClient {
	return NewVirtualMachinesClientWithBaseURI(DefaultBaseURI, subscriptionID)
}

// NewVirtualMachinesClientWithBaseURI creates an instance of the VirtualMachinesClient client using a custom endpoint.
// Use this when interacting with an Azure cloud that uses a non-standard base URI (sovereign clouds, Azure stack).
func NewVirtualMachinesClientWithBaseURI(baseURI string, subscriptionID string) VirtualMachinesClient {
	return VirtualMachinesClient{NewWithBaseURI(baseURI, subscriptionID)}
}

// Capture captures the VM by copying virtual hard disks of the VM and outputs a template that can be used to create
// similar VMs.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
// parameters - parameters supplied to the Capture Virtual Machine operation.
func (client VirtualMachinesClient) Capture(ctx context.Context, resourceGroupName string, VMName string, parameters VirtualMachineCaptureParameters) (result VirtualMachinesCaptureFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Capture")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	if err := validation.Validate([]validation.Validation{
		{TargetValue: parameters,
			Constraints: []validation.Constraint{{Target: "parameters.VhdPrefix", Name: validation.Null, Rule: true, Chain: nil},
				{Target: "parameters.DestinationContainerName", Name: validation.Null, Rule: true, Chain: nil},
				{Target: "parameters.OverwriteVhds", Name: validation.Null, Rule: true, Chain: nil}}}}); err != nil {
		return result, validation.NewError("compute.VirtualMachinesClient", "Capture", err.Error())
	}

	req, err := client.CapturePreparer(ctx, resourceGroupName, VMName, parameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Capture", nil, "Failure preparing request")
		return
	}

	result, err = client.CaptureSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Capture", result.Response(), "Failure sending request")
		return
	}

	return
}

// CapturePreparer prepares the Capture request.
func (client VirtualMachinesClient) CapturePreparer(ctx context.Context, resourceGroupName string, VMName string, parameters VirtualMachineCaptureParameters) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/capture", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// CaptureSender sends the Capture request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) CaptureSender(req *http.Request) (future VirtualMachinesCaptureFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// CaptureResponder handles the response to the Capture request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) CaptureResponder(resp *http.Response) (result VirtualMachineCaptureResult, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// CreateOrUpdate the operation to create or update a virtual machine.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
// parameters - parameters supplied to the Create Virtual Machine operation.
func (client VirtualMachinesClient) CreateOrUpdate(ctx context.Context, resourceGroupName string, VMName string, parameters VirtualMachine) (result VirtualMachinesCreateOrUpdateFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.CreateOrUpdate")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	if err := validation.Validate([]validation.Validation{
		{TargetValue: parameters,
			Constraints: []validation.Constraint{{Target: "parameters.VirtualMachineProperties", Name: validation.Null, Rule: false,
				Chain: []validation.Constraint{{Target: "parameters.VirtualMachineProperties.StorageProfile", Name: validation.Null, Rule: false,
					Chain: []validation.Constraint{{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk", Name: validation.Null, Rule: false,
						Chain: []validation.Constraint{{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.EncryptionSettings", Name: validation.Null, Rule: false,
							Chain: []validation.Constraint{{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.EncryptionSettings.DiskEncryptionKey", Name: validation.Null, Rule: false,
								Chain: []validation.Constraint{{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.EncryptionSettings.DiskEncryptionKey.SecretURL", Name: validation.Null, Rule: true, Chain: nil},
									{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.EncryptionSettings.DiskEncryptionKey.SourceVault", Name: validation.Null, Rule: true, Chain: nil},
								}},
								{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.EncryptionSettings.KeyEncryptionKey", Name: validation.Null, Rule: false,
									Chain: []validation.Constraint{{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.EncryptionSettings.KeyEncryptionKey.KeyURL", Name: validation.Null, Rule: true, Chain: nil},
										{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.EncryptionSettings.KeyEncryptionKey.SourceVault", Name: validation.Null, Rule: true, Chain: nil},
									}},
							}},
							{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.Name", Name: validation.Null, Rule: true, Chain: nil},
							{Target: "parameters.VirtualMachineProperties.StorageProfile.OsDisk.Vhd", Name: validation.Null, Rule: true, Chain: nil},
						}},
					}},
				}}}}}); err != nil {
		return result, validation.NewError("compute.VirtualMachinesClient", "CreateOrUpdate", err.Error())
	}

	req, err := client.CreateOrUpdatePreparer(ctx, resourceGroupName, VMName, parameters)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "CreateOrUpdate", nil, "Failure preparing request")
		return
	}

	result, err = client.CreateOrUpdateSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "CreateOrUpdate", result.Response(), "Failure sending request")
		return
	}

	return
}

// CreateOrUpdatePreparer prepares the CreateOrUpdate request.
func (client VirtualMachinesClient) CreateOrUpdatePreparer(ctx context.Context, resourceGroupName string, VMName string, parameters VirtualMachine) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	parameters.Resources = nil
	preparer := autorest.CreatePreparer(
		autorest.AsContentType("application/json; charset=utf-8"),
		autorest.AsPut(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}", pathParameters),
		autorest.WithJSON(parameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// CreateOrUpdateSender sends the CreateOrUpdate request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) CreateOrUpdateSender(req *http.Request) (future VirtualMachinesCreateOrUpdateFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// CreateOrUpdateResponder handles the response to the CreateOrUpdate request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) CreateOrUpdateResponder(resp *http.Response) (result VirtualMachine, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusCreated),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Deallocate shuts down the virtual machine and releases the compute resources. You are not billed for the compute
// resources that this virtual machine uses.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) Deallocate(ctx context.Context, resourceGroupName string, VMName string) (result VirtualMachinesDeallocateFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Deallocate")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.DeallocatePreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Deallocate", nil, "Failure preparing request")
		return
	}

	result, err = client.DeallocateSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Deallocate", result.Response(), "Failure sending request")
		return
	}

	return
}

// DeallocatePreparer prepares the Deallocate request.
func (client VirtualMachinesClient) DeallocatePreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/deallocate", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// DeallocateSender sends the Deallocate request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) DeallocateSender(req *http.Request) (future VirtualMachinesDeallocateFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// DeallocateResponder handles the response to the Deallocate request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) DeallocateResponder(resp *http.Response) (result OperationStatusResponse, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Delete the operation to delete a virtual machine.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) Delete(ctx context.Context, resourceGroupName string, VMName string) (result VirtualMachinesDeleteFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Delete")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.DeletePreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Delete", nil, "Failure preparing request")
		return
	}

	result, err = client.DeleteSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Delete", result.Response(), "Failure sending request")
		return
	}

	return
}

// DeletePreparer prepares the Delete request.
func (client VirtualMachinesClient) DeletePreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsDelete(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// DeleteSender sends the Delete request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) DeleteSender(req *http.Request) (future VirtualMachinesDeleteFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// DeleteResponder handles the response to the Delete request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) DeleteResponder(resp *http.Response) (result OperationStatusResponse, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted, http.StatusNoContent),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Generalize sets the state of the virtual machine to generalized.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) Generalize(ctx context.Context, resourceGroupName string, VMName string) (result OperationStatusResponse, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Generalize")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.GeneralizePreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Generalize", nil, "Failure preparing request")
		return
	}

	resp, err := client.GeneralizeSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Generalize", resp, "Failure sending request")
		return
	}

	result, err = client.GeneralizeResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Generalize", resp, "Failure responding to request")
		return
	}

	return
}

// GeneralizePreparer prepares the Generalize request.
func (client VirtualMachinesClient) GeneralizePreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/generalize", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// GeneralizeSender sends the Generalize request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) GeneralizeSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// GeneralizeResponder handles the response to the Generalize request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) GeneralizeResponder(resp *http.Response) (result OperationStatusResponse, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Get retrieves information about the model view or the instance view of a virtual machine.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
// expand - the expand expression to apply on the operation.
func (client VirtualMachinesClient) Get(ctx context.Context, resourceGroupName string, VMName string, expand InstanceViewTypes) (result VirtualMachine, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Get")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.GetPreparer(ctx, resourceGroupName, VMName, expand)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Get", nil, "Failure preparing request")
		return
	}

	resp, err := client.GetSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Get", resp, "Failure sending request")
		return
	}

	result, err = client.GetResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Get", resp, "Failure responding to request")
		return
	}

	return
}

// GetPreparer prepares the Get request.
func (client VirtualMachinesClient) GetPreparer(ctx context.Context, resourceGroupName string, VMName string, expand InstanceViewTypes) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}
	if len(string(expand)) > 0 {
		queryParameters["$expand"] = autorest.Encode("query", expand)
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// GetSender sends the Get request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) GetSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// GetResponder handles the response to the Get request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) GetResponder(resp *http.Response) (result VirtualMachine, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// GetExtensions the operation to get all extensions of a Virtual Machine.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine containing the extension.
// expand - the expand expression to apply on the operation.
func (client VirtualMachinesClient) GetExtensions(ctx context.Context, resourceGroupName string, VMName string, expand string) (result VirtualMachineExtensionsListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.GetExtensions")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.GetExtensionsPreparer(ctx, resourceGroupName, VMName, expand)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "GetExtensions", nil, "Failure preparing request")
		return
	}

	resp, err := client.GetExtensionsSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "GetExtensions", resp, "Failure sending request")
		return
	}

	result, err = client.GetExtensionsResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "GetExtensions", resp, "Failure responding to request")
		return
	}

	return
}

// GetExtensionsPreparer prepares the GetExtensions request.
func (client VirtualMachinesClient) GetExtensionsPreparer(ctx context.Context, resourceGroupName string, VMName string, expand string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}
	if len(expand) > 0 {
		queryParameters["$expand"] = autorest.Encode("query", expand)
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/extensions", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// GetExtensionsSender sends the GetExtensions request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) GetExtensionsSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// GetExtensionsResponder handles the response to the GetExtensions request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) GetExtensionsResponder(resp *http.Response) (result VirtualMachineExtensionsListResult, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// List lists all of the virtual machines in the specified resource group. Use the nextLink property in the response to
// get the next page of virtual machines.
// Parameters:
// resourceGroupName - the name of the resource group.
func (client VirtualMachinesClient) List(ctx context.Context, resourceGroupName string) (result VirtualMachineListResultPage, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.List")
		defer func() {
			sc := -1
			if result.vmlr.Response.Response != nil {
				sc = result.vmlr.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.fn = client.listNextResults
	req, err := client.ListPreparer(ctx, resourceGroupName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "List", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListSender(req)
	if err != nil {
		result.vmlr.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "List", resp, "Failure sending request")
		return
	}

	result.vmlr, err = client.ListResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "List", resp, "Failure responding to request")
		return
	}
	if result.vmlr.hasNextLink() && result.vmlr.IsEmpty() {
		err = result.NextWithContext(ctx)
		return
	}

	return
}

// ListPreparer prepares the List request.
func (client VirtualMachinesClient) ListPreparer(ctx context.Context, resourceGroupName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListSender sends the List request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) ListSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListResponder handles the response to the List request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) ListResponder(resp *http.Response) (result VirtualMachineListResult, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// listNextResults retrieves the next set of results, if any.
func (client VirtualMachinesClient) listNextResults(ctx context.Context, lastResults VirtualMachineListResult) (result VirtualMachineListResult, err error) {
	req, err := lastResults.virtualMachineListResultPreparer(ctx)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "listNextResults", nil, "Failure preparing next results request")
	}
	if req == nil {
		return
	}
	resp, err := client.ListSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "listNextResults", resp, "Failure sending next results request")
	}
	result, err = client.ListResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "listNextResults", resp, "Failure responding to next results request")
	}
	return
}

// ListComplete enumerates all values, automatically crossing page boundaries as required.
func (client VirtualMachinesClient) ListComplete(ctx context.Context, resourceGroupName string) (result VirtualMachineListResultIterator, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.List")
		defer func() {
			sc := -1
			if result.Response().Response.Response != nil {
				sc = result.page.Response().Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.page, err = client.List(ctx, resourceGroupName)
	return
}

// ListAll lists all of the virtual machines in the specified subscription. Use the nextLink property in the response
// to get the next page of virtual machines.
func (client VirtualMachinesClient) ListAll(ctx context.Context) (result VirtualMachineListResultPage, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.ListAll")
		defer func() {
			sc := -1
			if result.vmlr.Response.Response != nil {
				sc = result.vmlr.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.fn = client.listAllNextResults
	req, err := client.ListAllPreparer(ctx)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "ListAll", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListAllSender(req)
	if err != nil {
		result.vmlr.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "ListAll", resp, "Failure sending request")
		return
	}

	result.vmlr, err = client.ListAllResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "ListAll", resp, "Failure responding to request")
		return
	}
	if result.vmlr.hasNextLink() && result.vmlr.IsEmpty() {
		err = result.NextWithContext(ctx)
		return
	}

	return
}

// ListAllPreparer prepares the ListAll request.
func (client VirtualMachinesClient) ListAllPreparer(ctx context.Context) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"subscriptionId": autorest.Encode("path", client.SubscriptionID),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/providers/Microsoft.Compute/virtualMachines", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListAllSender sends the ListAll request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) ListAllSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListAllResponder handles the response to the ListAll request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) ListAllResponder(resp *http.Response) (result VirtualMachineListResult, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// listAllNextResults retrieves the next set of results, if any.
func (client VirtualMachinesClient) listAllNextResults(ctx context.Context, lastResults VirtualMachineListResult) (result VirtualMachineListResult, err error) {
	req, err := lastResults.virtualMachineListResultPreparer(ctx)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "listAllNextResults", nil, "Failure preparing next results request")
	}
	if req == nil {
		return
	}
	resp, err := client.ListAllSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		return result, autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "listAllNextResults", resp, "Failure sending next results request")
	}
	result, err = client.ListAllResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "listAllNextResults", resp, "Failure responding to next results request")
	}
	return
}

// ListAllComplete enumerates all values, automatically crossing page boundaries as required.
func (client VirtualMachinesClient) ListAllComplete(ctx context.Context) (result VirtualMachineListResultIterator, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.ListAll")
		defer func() {
			sc := -1
			if result.Response().Response.Response != nil {
				sc = result.page.Response().Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	result.page, err = client.ListAll(ctx)
	return
}

// ListAvailableSizes lists all available virtual machine sizes to which the specified virtual machine can be resized.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) ListAvailableSizes(ctx context.Context, resourceGroupName string, VMName string) (result VirtualMachineSizeListResult, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.ListAvailableSizes")
		defer func() {
			sc := -1
			if result.Response.Response != nil {
				sc = result.Response.Response.StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.ListAvailableSizesPreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "ListAvailableSizes", nil, "Failure preparing request")
		return
	}

	resp, err := client.ListAvailableSizesSender(req)
	if err != nil {
		result.Response = autorest.Response{Response: resp}
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "ListAvailableSizes", resp, "Failure sending request")
		return
	}

	result, err = client.ListAvailableSizesResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "ListAvailableSizes", resp, "Failure responding to request")
		return
	}

	return
}

// ListAvailableSizesPreparer prepares the ListAvailableSizes request.
func (client VirtualMachinesClient) ListAvailableSizesPreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsGet(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/vmSizes", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// ListAvailableSizesSender sends the ListAvailableSizes request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) ListAvailableSizesSender(req *http.Request) (*http.Response, error) {
	return client.Send(req, azure.DoRetryWithRegistration(client.Client))
}

// ListAvailableSizesResponder handles the response to the ListAvailableSizes request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) ListAvailableSizesResponder(resp *http.Response) (result VirtualMachineSizeListResult, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// PowerOff the operation to power off (stop) a virtual machine. The virtual machine can be restarted with the same
// provisioned resources. You are still charged for this virtual machine.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) PowerOff(ctx context.Context, resourceGroupName string, VMName string) (result VirtualMachinesPowerOffFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.PowerOff")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.PowerOffPreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "PowerOff", nil, "Failure preparing request")
		return
	}

	result, err = client.PowerOffSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "PowerOff", result.Response(), "Failure sending request")
		return
	}

	return
}

// PowerOffPreparer prepares the PowerOff request.
func (client VirtualMachinesClient) PowerOffPreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/powerOff", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// PowerOffSender sends the PowerOff request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) PowerOffSender(req *http.Request) (future VirtualMachinesPowerOffFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// PowerOffResponder handles the response to the PowerOff request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) PowerOffResponder(resp *http.Response) (result OperationStatusResponse, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Redeploy shuts down the virtual machine, moves it to a new node, and powers it back on.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) Redeploy(ctx context.Context, resourceGroupName string, VMName string) (result VirtualMachinesRedeployFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Redeploy")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.RedeployPreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Redeploy", nil, "Failure preparing request")
		return
	}

	result, err = client.RedeploySender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Redeploy", result.Response(), "Failure sending request")
		return
	}

	return
}

// RedeployPreparer prepares the Redeploy request.
func (client VirtualMachinesClient) RedeployPreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/redeploy", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// RedeploySender sends the Redeploy request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) RedeploySender(req *http.Request) (future VirtualMachinesRedeployFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// RedeployResponder handles the response to the Redeploy request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) RedeployResponder(resp *http.Response) (result OperationStatusResponse, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Restart the operation to restart a virtual machine.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) Restart(ctx context.Context, resourceGroupName string, VMName string) (result VirtualMachinesRestartFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Restart")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.RestartPreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Restart", nil, "Failure preparing request")
		return
	}

	result, err = client.RestartSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Restart", result.Response(), "Failure sending request")
		return
	}

	return
}

// RestartPreparer prepares the Restart request.
func (client VirtualMachinesClient) RestartPreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/restart", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// RestartSender sends the Restart request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) RestartSender(req *http.Request) (future VirtualMachinesRestartFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// RestartResponder handles the response to the Restart request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) RestartResponder(resp *http.Response) (result OperationStatusResponse, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}

// Start the operation to start a virtual machine.
// Parameters:
// resourceGroupName - the name of the resource group.
// VMName - the name of the virtual machine.
func (client VirtualMachinesClient) Start(ctx context.Context, resourceGroupName string, VMName string) (result VirtualMachinesStartFuture, err error) {
	if tracing.IsEnabled() {
		ctx = tracing.StartSpan(ctx, fqdn+"/VirtualMachinesClient.Start")
		defer func() {
			sc := -1
			if result.FutureAPI != nil && result.FutureAPI.Response() != nil {
				sc = result.FutureAPI.Response().StatusCode
			}
			tracing.EndSpan(ctx, sc, err)
		}()
	}
	req, err := client.StartPreparer(ctx, resourceGroupName, VMName)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Start", nil, "Failure preparing request")
		return
	}

	result, err = client.StartSender(req)
	if err != nil {
		err = autorest.NewErrorWithError(err, "compute.VirtualMachinesClient", "Start", result.Response(), "Failure sending request")
		return
	}

	return
}

// StartPreparer prepares the Start request.
func (client VirtualMachinesClient) StartPreparer(ctx context.Context, resourceGroupName string, VMName string) (*http.Request, error) {
	pathParameters := map[string]interface{}{
		"resourceGroupName": autorest.Encode("path", resourceGroupName),
		"subscriptionId":    autorest.Encode("path", client.SubscriptionID),
		"vmName":            autorest.Encode("path", VMName),
	}

	const APIVersion = "2016-03-30"
	queryParameters := map[string]interface{}{
		"api-version": APIVersion,
	}

	preparer := autorest.CreatePreparer(
		autorest.AsPost(),
		autorest.WithBaseURL(client.BaseURI),
		autorest.WithPathParameters("/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/virtualMachines/{vmName}/start", pathParameters),
		autorest.WithQueryParameters(queryParameters))
	return preparer.Prepare((&http.Request{}).WithContext(ctx))
}

// StartSender sends the Start request. The method will close the
// http.Response Body if it receives an error.
func (client VirtualMachinesClient) StartSender(req *http.Request) (future VirtualMachinesStartFuture, err error) {
	var resp *http.Response
	future.FutureAPI = &azure.Future{}
	resp, err = client.Send(req, azure.DoRetryWithRegistration(client.Client))
	if err != nil {
		return
	}
	var azf azure.Future
	azf, err = azure.NewFutureFromResponse(resp)
	future.FutureAPI = &azf
	future.Result = future.result
	return
}

// StartResponder handles the response to the Start request. The method always
// closes the http.Response Body.
func (client VirtualMachinesClient) StartResponder(resp *http.Response) (result OperationStatusResponse, err error) {
	err = autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusAccepted),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return
}