func (page *VirtualMachineListResultPage) Next() error {
	return page.NextWithContext(context.Background())
}
Next advances to the next page of values.  If there was an error making
the request the page does not advance and the error is returned.
Deprecated: Use NextWithContext() instead.
package vmclient
import (
	"context"
	"fmt"
	"net/http"
	"time"
	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-12-01/compute"
	"github.com/Azure/go-autorest/autorest"
	"github.com/Azure/go-autorest/autorest/azure"
	"github.com/Azure/go-autorest/autorest/to"
	"k8s.io/client-go/util/flowcontrol"
	"k8s.io/klog/v2"
	azclients "k8s.io/legacy-cloud-providers/azure/clients"
	"k8s.io/legacy-cloud-providers/azure/clients/armclient"
	"k8s.io/legacy-cloud-providers/azure/metrics"
	"k8s.io/legacy-cloud-providers/azure/retry"
)
var _ Interface = &Client{}
type Client struct {
	armClient      armclient.Interface
	subscriptionID string
	rateLimiterReader flowcontrol.RateLimiter
	rateLimiterWriter flowcontrol.RateLimiter
	RetryAfterReader time.Time
	RetryAfterWriter time.Time
}
func New(config *azclients.ClientConfig) *Client {
	baseURI := config.ResourceManagerEndpoint
	authorizer := config.Authorizer
	armClient := armclient.New(authorizer, baseURI, config.UserAgent, APIVersion, config.Location, config.Backoff)
	rateLimiterReader, rateLimiterWriter := azclients.NewRateLimiter(config.RateLimitConfig)
	klog.V(2).Infof("Azure VirtualMachine client (read ops) using rate limit config: QPS=%g, bucket=%d",
		config.RateLimitConfig.CloudProviderRateLimitQPS,
		config.RateLimitConfig.CloudProviderRateLimitBucket)
	klog.V(2).Infof("Azure VirtualMachine client (write ops) using rate limit config: QPS=%g, bucket=%d",
		config.RateLimitConfig.CloudProviderRateLimitQPSWrite,
		config.RateLimitConfig.CloudProviderRateLimitBucketWrite)
	client := &Client{
		armClient:         armClient,
		rateLimiterReader: rateLimiterReader,
		rateLimiterWriter: rateLimiterWriter,
		subscriptionID:    config.SubscriptionID,
	}
	return client
}
func (c *Client) Get(ctx context.Context, resourceGroupName string, VMName string, expand compute.InstanceViewTypes) (compute.VirtualMachine, *retry.Error) {
	mc := metrics.NewMetricContext("vm", "get", resourceGroupName, c.subscriptionID, "")
	if !c.rateLimiterReader.TryAccept() {
		mc.RateLimitedCount()
		return compute.VirtualMachine{}, retry.GetRateLimitError(false, "VMGet")
	}
	if c.RetryAfterReader.After(time.Now()) {
		mc.ThrottledCount()
		rerr := retry.GetThrottlingError("VMGet", "client throttled", c.RetryAfterReader)
		return compute.VirtualMachine{}, rerr
	}
	result, rerr := c.getVM(ctx, resourceGroupName, VMName, expand)
	mc.Observe(rerr.Error())
	if rerr != nil {
		if rerr.IsThrottled() {
			c.RetryAfterReader = rerr.RetryAfter
		}
		return result, rerr
	}
	return result, nil
}
func (c *Client) getVM(ctx context.Context, resourceGroupName string, VMName string, expand compute.InstanceViewTypes) (compute.VirtualMachine, *retry.Error) {
	resourceID := armclient.GetResourceID(
		c.subscriptionID,
		resourceGroupName,
		"Microsoft.Compute/virtualMachines",
		VMName,
	)
	result := compute.VirtualMachine{}
	response, rerr := c.armClient.GetResource(ctx, resourceID, string(expand))
	defer c.armClient.CloseResponse(ctx, response)
	if rerr != nil {
		klog.V(5).Infof("Received error in %s: resourceID: %s, error: %s", "vm.get.request", resourceID, rerr.Error())
		return result, rerr
	}
	err := autorest.Respond(
		response,
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result))
	if err != nil {
		klog.V(5).Infof("Received error in %s: resourceID: %s, error: %s", "vm.get.respond", resourceID, err)
		return result, retry.GetError(response, err)
	}
	result.Response = autorest.Response{Response: response}
	return result, nil
}
func (c *Client) List(ctx context.Context, resourceGroupName string) ([]compute.VirtualMachine, *retry.Error) {
	mc := metrics.NewMetricContext("vm", "list", resourceGroupName, c.subscriptionID, "")
	if !c.rateLimiterReader.TryAccept() {
		mc.RateLimitedCount()
		return nil, retry.GetRateLimitError(false, "VMList")
	}
	if c.RetryAfterReader.After(time.Now()) {
		mc.ThrottledCount()
		rerr := retry.GetThrottlingError("VMList", "client throttled", c.RetryAfterReader)
		return nil, rerr
	}
	result, rerr := c.listVM(ctx, resourceGroupName)
	mc.Observe(rerr.Error())
	if rerr != nil {
		if rerr.IsThrottled() {
			c.RetryAfterReader = rerr.RetryAfter
		}
		return result, rerr
	}
	return result, nil
}
func (c *Client) listVM(ctx context.Context, resourceGroupName string) ([]compute.VirtualMachine, *retry.Error) {
	resourceID := fmt.Sprintf("/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Compute/virtualMachines",
		autorest.Encode("path", c.subscriptionID),
		autorest.Encode("path", resourceGroupName),
	)
	result := make([]compute.VirtualMachine, 0)
	page := &VirtualMachineListResultPage{}
	page.fn = c.listNextResults
	resp, rerr := c.armClient.GetResource(ctx, resourceID, "")
	defer c.armClient.CloseResponse(ctx, resp)
	if rerr != nil {
		klog.V(5).Infof("Received error in %s: resourceID: %s, error: %s", "vm.list.request", resourceID, rerr.Error())
		return result, rerr
	}
	var err error
	page.vmlr, err = c.listResponder(resp)
	if err != nil {
		klog.V(5).Infof("Received error in %s: resourceID: %s, error: %s", "vm.list.respond", resourceID, err)
		return result, retry.GetError(resp, err)
	}
	for {
		result = append(result, page.Values()...)
		if to.String(page.Response().NextLink) == "" {
			break
		}
		if err = page.NextWithContext(ctx); err != nil {
			klog.V(5).Infof("Received error in %s: resourceID: %s, error: %s", "vm.list.next", resourceID, err)
			return result, retry.GetError(page.Response().Response.Response, err)
		}
	}
	return result, nil
}
func (c *Client) Update(ctx context.Context, resourceGroupName string, VMName string, parameters compute.VirtualMachineUpdate, source string) *retry.Error {
	mc := metrics.NewMetricContext("vm", "update", resourceGroupName, c.subscriptionID, source)
	if !c.rateLimiterWriter.TryAccept() {
		mc.RateLimitedCount()
		return retry.GetRateLimitError(true, "VMUpdate")
	}
	if c.RetryAfterWriter.After(time.Now()) {
		mc.ThrottledCount()
		rerr := retry.GetThrottlingError("VMUpdate", "client throttled", c.RetryAfterWriter)
		return rerr
	}
	rerr := c.updateVM(ctx, resourceGroupName, VMName, parameters, source)
	mc.Observe(rerr.Error())
	if rerr != nil {
		if rerr.IsThrottled() {
			c.RetryAfterWriter = rerr.RetryAfter
		}
		return rerr
	}
	return nil
}
func (c *Client) updateVM(ctx context.Context, resourceGroupName string, VMName string, parameters compute.VirtualMachineUpdate, source string) *retry.Error {
	resourceID := armclient.GetResourceID(
		c.subscriptionID,
		resourceGroupName,
		"Microsoft.Compute/virtualMachines",
		VMName,
	)
	response, rerr := c.armClient.PatchResource(ctx, resourceID, parameters)
	defer c.armClient.CloseResponse(ctx, response)
	if rerr != nil {
		klog.V(5).Infof("Received error in %s: resourceID: %s, error: %s", "vm.put.request", resourceID, rerr.Error())
		return rerr
	}
	if response != nil && response.StatusCode != http.StatusNoContent {
		_, rerr = c.updateResponder(response)
		if rerr != nil {
			klog.V(5).Infof("Received error in %s: resourceID: %s, error: %s", "vm.put.respond", resourceID, rerr.Error())
			return rerr
		}
	}
	return nil
}
func (c *Client) updateResponder(resp *http.Response) (*compute.VirtualMachine, *retry.Error) {
	result := &compute.VirtualMachine{}
	err := autorest.Respond(
		resp,
		azure.WithErrorUnlessStatusCode(http.StatusOK, http.StatusCreated),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing())
	result.Response = autorest.Response{Response: resp}
	return result, retry.GetError(resp, err)
}
func (c *Client) listResponder(resp *http.Response) (result compute.VirtualMachineListResult, err error) {
	err = autorest.Respond(
		resp,
		autorest.ByIgnoring(),
		azure.WithErrorUnlessStatusCode(http.StatusOK),
		autorest.ByUnmarshallingJSON(&result),
		autorest.ByClosing(),
	)
	result.Response = autorest.Response{Response: resp}
	return
}
func (c *Client) vmListResultPreparer(ctx context.Context, vmlr compute.VirtualMachineListResult) (*http.Request, error) {
	if vmlr.NextLink == nil || len(to.String(vmlr.NextLink)) < 1 {
		return nil, nil
	}
	decorators := []autorest.PrepareDecorator{
		autorest.WithBaseURL(to.String(vmlr.NextLink)),
	}
	return c.armClient.PrepareGetRequest(ctx, decorators...)
}
func (c *Client) listNextResults(ctx context.Context, lastResults compute.VirtualMachineListResult) (result compute.VirtualMachineListResult, err error) {
	req, err := c.vmListResultPreparer(ctx, lastResults)
	if err != nil {
		return result, autorest.NewErrorWithError(err, "vmclient", "listNextResults", nil, "Failure preparing next results request")
	}
	if req == nil {
		return
	}
	resp, rerr := c.armClient.Send(ctx, req)
	defer c.armClient.CloseResponse(ctx, resp)
	if rerr != nil {
		result.Response = autorest.Response{Response: resp}
		return result, autorest.NewErrorWithError(rerr.Error(), "vmclient", "listNextResults", resp, "Failure sending next results request")
	}
	result, err = c.listResponder(resp)
	if err != nil {
		err = autorest.NewErrorWithError(err, "vmclient", "listNextResults", resp, "Failure responding to next results request")
	}
	return
}
type VirtualMachineListResultPage struct {
	fn   func(context.Context, compute.VirtualMachineListResult) (compute.VirtualMachineListResult, error)
	vmlr compute.VirtualMachineListResult
}
func (page *VirtualMachineListResultPage) NextWithContext(ctx context.Context) (err error) {
	next, err := page.fn(ctx, page.vmlr)
	if err != nil {
		return err
	}
	page.vmlr = next
	return nil
}