Golang to.StringPtr函數代碼示例

func checkName(name string) {
	c, err := helpers.LoadCredentials()
	if err != nil {
		log.Fatalf("Error: %v", err)
	}

	ac := storage.NewAccountsClient(c["subscriptionID"])

	spt, err := helpers.NewServicePrincipalTokenFromCredentials(c, azure.AzureResourceManagerScope)
	if err != nil {
		log.Fatalf("Error: %v", err)
	}
	ac.Authorizer = spt

	ac.Sender = autorest.CreateSender(
		autorest.WithLogging(log.New(os.Stdout, "sdk-example: ", log.LstdFlags)))

	ac.RequestInspector = withInspection()
	ac.ResponseInspector = byInspecting()

	cna, err := ac.CheckNameAvailability(
		storage.AccountCheckNameAvailabilityParameters{
			Name: to.StringPtr(name),
			Type: to.StringPtr("Microsoft.Storage/storageAccounts")})

	if err != nil {
		log.Fatalf("Error: %v", err)
	} else {
		if to.Bool(cna.NameAvailable) {
			fmt.Printf("The name '%s' is available\n", name)
		} else {
			fmt.Printf("The name '%s' is unavailable because %s\n", name, to.String(cna.Message))
		}
	}
}

func createAccount(resourceGroup, name string) {
	c, err := helpers.LoadCredentials()
	if err != nil {
		log.Fatalf("Error: %v", err)
	}

	ac := storage.NewAccountsClient(c["subscriptionID"])

	spt, err := helpers.NewServicePrincipalTokenFromCredentials(c, azure.AzureResourceManagerScope)
	if err != nil {
		log.Fatalf("Error: %v", err)
	}
	ac.Authorizer = spt

	cna, err := ac.CheckNameAvailability(
		storage.AccountCheckNameAvailabilityParameters{
			Name: to.StringPtr(name),
			Type: to.StringPtr("Microsoft.Storage/storageAccounts")})
	if err != nil {
		log.Fatalf("Error: %v", err)
		return
	}
	if !to.Bool(cna.NameAvailable) {
		fmt.Printf("%s is unavailable -- try again\n", name)
		return
	}
	fmt.Printf("%s is available\n\n", name)

	ac.Sender = autorest.CreateSender(withWatcher())
	ac.PollingMode = autorest.PollUntilAttempts
	ac.PollingAttempts = 5

	cp := storage.AccountCreateParameters{}
	cp.Location = to.StringPtr("westus")
	cp.Properties = &storage.AccountPropertiesCreateParameters{AccountType: storage.StandardLRS}

	sa, err := ac.Create(resourceGroup, name, cp)
	if err != nil {
		if sa.Response.StatusCode != http.StatusAccepted {
			fmt.Printf("Creation of %s.%s failed with err -- %v\n", resourceGroup, name, err)
			return
		}
		fmt.Printf("Create initiated for %s.%s -- poll %s to check status\n",
			resourceGroup,
			name,
			sa.GetPollingLocation())
		return
	}

	fmt.Printf("Successfully created %s.%s\n\n", resourceGroup, name)

	ac.Sender = nil
	r, err := ac.Delete(resourceGroup, name)
	if err != nil {
		fmt.Printf("Delete of %s.%s failed with status %s\n...%v\n", resourceGroup, name, r.Status, err)
		return
	}
	fmt.Printf("Deletion of %s.%s succeeded -- %s\n", resourceGroup, name, r.Status)
}

func makeVirtualMachine(name string) compute.VirtualMachine {
	return compute.VirtualMachine{
		Name: to.StringPtr(name),
		Properties: &compute.VirtualMachineProperties{
			ProvisioningState: to.StringPtr("Successful"),
		},
	}
}

func (v *azureVolumeSource) attachVolume(
	vm *compute.VirtualMachine,
	p storage.VolumeAttachmentParams,
) (_ *storage.VolumeAttachment, updated bool, _ error) {

	dataDisksRoot := dataDiskVhdRoot(v.env.config.location, v.env.config.storageAccount)
	dataDiskName := p.VolumeId
	vhdURI := dataDisksRoot + dataDiskName + vhdExtension

	var dataDisks []compute.DataDisk
	if vm.Properties.StorageProfile.DataDisks != nil {
		dataDisks = *vm.Properties.StorageProfile.DataDisks
	}
	for _, disk := range dataDisks {
		if to.String(disk.Name) != p.VolumeId {
			continue
		}
		if to.String(disk.Vhd.URI) != vhdURI {
			continue
		}
		// Disk is already attached.
		volumeAttachment := &storage.VolumeAttachment{
			p.Volume,
			p.Machine,
			storage.VolumeAttachmentInfo{
				BusAddress: diskBusAddress(to.Int(disk.Lun)),
			},
		}
		return volumeAttachment, false, nil
	}

	lun, err := nextAvailableLUN(vm)
	if err != nil {
		return nil, false, errors.Annotate(err, "choosing LUN")
	}

	dataDisk := compute.DataDisk{
		Lun:          to.IntPtr(lun),
		Name:         to.StringPtr(dataDiskName),
		Vhd:          &compute.VirtualHardDisk{to.StringPtr(vhdURI)},
		Caching:      compute.ReadWrite,
		CreateOption: compute.Attach,
	}
	dataDisks = append(dataDisks, dataDisk)
	vm.Properties.StorageProfile.DataDisks = &dataDisks

	volumeAttachment := storage.VolumeAttachment{
		p.Volume,
		p.Machine,
		storage.VolumeAttachmentInfo{
			BusAddress: diskBusAddress(lun),
		},
	}
	return &volumeAttachment, true, nil
}

func createStorageAccount(
	client storage.AccountsClient,
	accountType storage.AccountType,
	resourceGroup string,
	location string,
	tags map[string]string,
	accountNameGenerator func() string,
) (string, string, error) {
	logger.Debugf("creating storage account (finding available name)")
	const maxAttempts = 10
	for remaining := maxAttempts; remaining > 0; remaining-- {
		accountName := accountNameGenerator()
		logger.Debugf("- checking storage account name %q", accountName)
		result, err := client.CheckNameAvailability(
			storage.AccountCheckNameAvailabilityParameters{
				Name: to.StringPtr(accountName),
				// Azure is a little inconsistent with when Type is
				// required. It's required here.
				Type: to.StringPtr("Microsoft.Storage/storageAccounts"),
			},
		)
		if err != nil {
			return "", "", errors.Annotate(err, "checking account name availability")
		}
		if !to.Bool(result.NameAvailable) {
			logger.Debugf(
				"%q is not available (%v): %v",
				accountName, result.Reason, result.Message,
			)
			continue
		}
		createParams := storage.AccountCreateParameters{
			Location: to.StringPtr(location),
			Tags:     toTagsPtr(tags),
			Properties: &storage.AccountPropertiesCreateParameters{
				AccountType: accountType,
			},
		}
		logger.Debugf("- creating %q storage account %q", accountType, accountName)
		// TODO(axw) account creation can fail if the account name is
		// available, but contains profanity. We should retry a set
		// number of times even if creating fails.
		if _, err := client.Create(resourceGroup, accountName, createParams); err != nil {
			return "", "", errors.Trace(err)
		}
		logger.Debugf("- listing storage account keys")
		listKeysResult, err := client.ListKeys(resourceGroup, accountName)
		if err != nil {
			return "", "", errors.Annotate(err, "listing storage account keys")
		}
		return accountName, to.String(listKeysResult.Key1), nil
	}
	return "", "", errors.New("could not find available storage account name")
}

// createVolume updates the provided VirtualMachine's StorageProfile with the
// parameters for creating a new data disk. We don't actually interact with
// the Azure API until after all changes to the VirtualMachine are made.
func (v *azureVolumeSource) createVolume(
	vm *compute.VirtualMachine,
	p storage.VolumeParams,
) (*storage.Volume, *storage.VolumeAttachment, error) {

	lun, err := nextAvailableLUN(vm)
	if err != nil {
		return nil, nil, errors.Annotate(err, "choosing LUN")
	}

	dataDisksRoot := dataDiskVhdRoot(v.env.config.location, v.env.config.storageAccount)
	dataDiskName := p.Tag.String()
	vhdURI := dataDisksRoot + dataDiskName + vhdExtension

	sizeInGib := mibToGib(p.Size)
	dataDisk := compute.DataDisk{
		Lun:          to.IntPtr(lun),
		DiskSizeGB:   to.IntPtr(int(sizeInGib)),
		Name:         to.StringPtr(dataDiskName),
		Vhd:          &compute.VirtualHardDisk{to.StringPtr(vhdURI)},
		Caching:      compute.ReadWrite,
		CreateOption: compute.Empty,
	}

	var dataDisks []compute.DataDisk
	if vm.Properties.StorageProfile.DataDisks != nil {
		dataDisks = *vm.Properties.StorageProfile.DataDisks
	}
	dataDisks = append(dataDisks, dataDisk)
	vm.Properties.StorageProfile.DataDisks = &dataDisks

	// Data disks associate VHDs to machines. In Juju's storage model,
	// the VHD is the volume and the disk is the volume attachment.
	volume := storage.Volume{
		p.Tag,
		storage.VolumeInfo{
			VolumeId: dataDiskName,
			Size:     gibToMib(sizeInGib),
			// We don't currently support persistent volumes in
			// Azure, as it requires removal of "comp=media" when
			// deleting VMs, complicating cleanup.
			Persistent: true,
		},
	}
	volumeAttachment := storage.VolumeAttachment{
		p.Tag,
		p.Attachment.Machine,
		storage.VolumeAttachmentInfo{
			BusAddress: diskBusAddress(lun),
		},
	}
	return &volume, &volumeAttachment, nil
}

func makePublicIPAddress(pipName, vmName, ipAddress string) network.PublicIPAddress {
	tags := map[string]*string{"juju-machine-name": &vmName}
	pip := network.PublicIPAddress{
		Name:       to.StringPtr(pipName),
		Tags:       &tags,
		Properties: &network.PublicIPAddressPropertiesFormat{},
	}
	if ipAddress != "" {
		pip.Properties.IPAddress = to.StringPtr(ipAddress)
	}
	return pip
}

func makeSecurityRule(name, ipAddress, ports string) network.SecurityRule {
	return network.SecurityRule{
		Name: to.StringPtr(name),
		Properties: &network.SecurityRulePropertiesFormat{
			Protocol:                 network.SecurityRuleProtocolTCP,
			DestinationAddressPrefix: to.StringPtr(ipAddress),
			DestinationPortRange:     to.StringPtr(ports),
			Access:                   network.Allow,
			Priority:                 to.IntPtr(200),
			Direction:                network.Inbound,
		},
	}
}

func createStorageAccount(
	group resources.ResourceGroup,
	arm arm.Client) error {

	ac := arm.StorageAccounts()

	cna, err := ac.CheckNameAvailability(
		storage.AccountCheckNameAvailabilityParameters{
			Name: group.Name,
			Type: to.StringPtr("Microsoft.Storage/storageAccounts")})

	if err != nil {
		return err
	}

	if to.Bool(cna.NameAvailable) {

		name := *group.Name
		props := storage.AccountPropertiesCreateParameters{AccountType: storage.StandardLRS}

		_, err = ac.Create(name, name,
			storage.AccountCreateParameters{
				Location:   group.Location,
				Properties: &props,
			})

		if err != nil {
			return fmt.Errorf("Failed to create storage account '%s' in location '%s': '%s'\n", name, *group.Location, err.Error())
		}
	}

	return nil
}

func createInternalVirtualNetwork(
	client network.ManagementClient,
	controllerResourceGroup string,
	location string,
	tags map[string]string,
) (*network.VirtualNetwork, error) {
	addressPrefixes := make([]string, 256)
	for i := range addressPrefixes {
		addressPrefixes[i] = fmt.Sprintf("10.%d.0.0/16", i)
	}
	virtualNetworkParams := network.VirtualNetwork{
		Location: to.StringPtr(location),
		Tags:     toTagsPtr(tags),
		Properties: &network.VirtualNetworkPropertiesFormat{
			AddressSpace: &network.AddressSpace{&addressPrefixes},
		},
	}
	logger.Debugf("creating virtual network %q", internalNetworkName)
	vnetClient := network.VirtualNetworksClient{client}
	vnet, err := vnetClient.CreateOrUpdate(
		controllerResourceGroup, internalNetworkName, virtualNetworkParams,
	)
	if err != nil {
		return nil, errors.Annotatef(err, "creating virtual network %q", internalNetworkName)
	}
	return &vnet, nil
}

func createVirtualMachine(
	group resources.ResourceGroup,
	vmName, adminName, adminPassword string,
	availSet compute.AvailabilitySet,
	networkInterface network.Interface,
	arm arm.Client) error {

	vmc := arm.VirtualMachines()

	netRefs := make([]compute.NetworkInterfaceReference, 1, 1)
	netRefs[0] = compute.NetworkInterfaceReference{ID: networkInterface.ID}

	groupName := *group.Name
	accountName := groupName

	vmParams := compute.VirtualMachine{
		Location: group.Location,
		Properties: &compute.VirtualMachineProperties{
			AvailabilitySet: &compute.SubResource{ID: availSet.ID},
			HardwareProfile: &compute.HardwareProfile{VMSize: compute.StandardA0},
			NetworkProfile:  &compute.NetworkProfile{NetworkInterfaces: &netRefs},
			StorageProfile: &compute.StorageProfile{
				ImageReference: &compute.ImageReference{
					Publisher: to.StringPtr("MicrosoftWindowsServer"),
					Offer:     to.StringPtr("WindowsServer"),
					Sku:       to.StringPtr("2012-R2-Datacenter"),
					Version:   to.StringPtr("latest"),
				},
				OsDisk: &compute.OSDisk{
					Name:         to.StringPtr("mytestod1"),
					CreateOption: compute.FromImage,
					Vhd: &compute.VirtualHardDisk{
						URI: to.StringPtr("http://" + accountName + ".blob.core.windows.net/vhds/mytestod1.vhd"),
					},
				},
			},
			OsProfile: &compute.OSProfile{
				AdminUsername:        to.StringPtr(adminName),
				AdminPassword:        to.StringPtr(adminPassword),
				ComputerName:         to.StringPtr(vmName),
				WindowsConfiguration: &compute.WindowsConfiguration{ProvisionVMAgent: to.BoolPtr(true)},
			},
		},
	}

	if _, err := vmc.CreateOrUpdate(groupName, vmName, vmParams); err != nil {
		return fmt.Errorf("Failed to create virtual machine '%s' in location '%s': '%s'\n", vmName, *group.Location, err.Error())
	}

	return nil
}

func makeIPConfiguration(privateIPAddress string) network.InterfaceIPConfiguration {
	ipConfiguration := network.InterfaceIPConfiguration{
		Properties: &network.InterfaceIPConfigurationPropertiesFormat{},
	}
	if privateIPAddress != "" {
		ipConfiguration.Properties.PrivateIPAddress = to.StringPtr(privateIPAddress)
	}
	return ipConfiguration
}

// initResourceGroup creates and initialises a resource group for this
// environment. The resource group will have a storage account and a
// subnet associated with it (but not necessarily contained within:
// see subnet creation).
func (env *azureEnviron) initResourceGroup() (*config.Config, error) {
	location := env.config.location
	tags, _ := env.config.ResourceTags()
	resourceGroupsClient := resources.GroupsClient{env.resources}

	logger.Debugf("creating resource group %q", env.resourceGroup)
	_, err := resourceGroupsClient.CreateOrUpdate(env.resourceGroup, resources.Group{
		Location: to.StringPtr(location),
		Tags:     toTagsPtr(tags),
	})
	if err != nil {
		return nil, errors.Annotate(err, "creating resource group")
	}

	var vnetPtr *network.VirtualNetwork
	if env.resourceGroup == env.controllerResourceGroup {
		// Create an internal network for all VMs to connect to.
		vnetPtr, err = createInternalVirtualNetwork(
			env.network, env.controllerResourceGroup, location, tags,
		)
		if err != nil {
			return nil, errors.Annotate(err, "creating virtual network")
		}
	} else {
		// We're creating a hosted environment, so we need to fetch
		// the virtual network to create a subnet below.
		vnetClient := network.VirtualNetworksClient{env.network}
		vnet, err := vnetClient.Get(env.controllerResourceGroup, internalNetworkName)
		if err != nil {
			return nil, errors.Annotate(err, "getting virtual network")
		}
		vnetPtr = &vnet
	}

	_, err = createInternalSubnet(
		env.network, env.resourceGroup, env.controllerResourceGroup,
		vnetPtr, location, tags,
	)
	if err != nil {
		return nil, errors.Annotate(err, "creating subnet")
	}

	// Create a storage account for the resource group.
	storageAccountsClient := storage.AccountsClient{env.storage}
	storageAccountName, storageAccountKey, err := createStorageAccount(
		storageAccountsClient, env.config.storageAccountType,
		env.resourceGroup, location, tags,
		env.provider.config.StorageAccountNameGenerator,
	)
	if err != nil {
		return nil, errors.Annotate(err, "creating storage account")
	}
	return env.config.Config.Apply(map[string]interface{}{
		configAttrStorageAccount:    storageAccountName,
		configAttrStorageAccountKey: storageAccountKey,
	})
}

// createVMExtension creates a CustomScript VM extension for the given VM
// which will execute the CustomData on the machine as a script.
func createVMExtension(
	vmExtensionClient compute.VirtualMachineExtensionsClient,
	os jujuos.OSType, resourceGroup, vmName, location string, vmTags map[string]string,
) error {
	var commandToExecute, extensionPublisher, extensionType, extensionVersion string

	switch os {
	case jujuos.Windows:
		commandToExecute = windowsExecuteCustomScriptCommand
		extensionPublisher = windowsCustomScriptPublisher
		extensionType = windowsCustomScriptType
		extensionVersion = windowsCustomScriptVersion
	case jujuos.CentOS:
		commandToExecute = linuxExecuteCustomScriptCommand
		extensionPublisher = linuxCustomScriptPublisher
		extensionType = linuxCustomScriptType
		extensionVersion = linuxCustomScriptVersion
	default:
		// Ubuntu renders CustomData as cloud-config, and interprets
		// it with cloud-init. Windows and CentOS do not use cloud-init
		// on Azure.
		return errors.NotSupportedf("CustomScript extension for OS %q", os)
	}

	extensionSettings := map[string]*string{
		"commandToExecute": to.StringPtr(commandToExecute),
	}
	extension := compute.VirtualMachineExtension{
		Location: to.StringPtr(location),
		Tags:     toTagsPtr(vmTags),
		Properties: &compute.VirtualMachineExtensionProperties{
			Publisher:               to.StringPtr(extensionPublisher),
			Type:                    to.StringPtr(extensionType),
			TypeHandlerVersion:      to.StringPtr(extensionVersion),
			AutoUpgradeMinorVersion: to.BoolPtr(true),
			Settings:                &extensionSettings,
		},
	}
	_, err := vmExtensionClient.CreateOrUpdate(
		resourceGroup, vmName, extensionName, extension,
	)
	return err
}

func makeNetworkInterface(nicName, vmName string, ipConfigurations ...network.InterfaceIPConfiguration) network.Interface {
	tags := map[string]*string{"juju-machine-name": &vmName}
	return network.Interface{
		Name: to.StringPtr(nicName),
		Tags: &tags,
		Properties: &network.InterfacePropertiesFormat{
			IPConfigurations: &ipConfigurations,
		},
	}
}