Golang to.String函数代码示例

// Addresses is specified in the Instance interface.
func (inst *azureInstance) Addresses() ([]jujunetwork.Address, error) {
	addresses := make([]jujunetwork.Address, 0, len(inst.networkInterfaces)+len(inst.publicIPAddresses))
	for _, nic := range inst.networkInterfaces {
		if nic.Properties.IPConfigurations == nil {
			continue
		}
		for _, ipConfiguration := range *nic.Properties.IPConfigurations {
			privateIpAddress := ipConfiguration.Properties.PrivateIPAddress
			if privateIpAddress == nil {
				continue
			}
			addresses = append(addresses, jujunetwork.NewScopedAddress(
				to.String(privateIpAddress),
				jujunetwork.ScopeCloudLocal,
			))
		}
	}
	for _, pip := range inst.publicIPAddresses {
		if pip.Properties.IPAddress == nil {
			continue
		}
		addresses = append(addresses, jujunetwork.NewScopedAddress(
			to.String(pip.Properties.IPAddress),
			jujunetwork.ScopePublic,
		))
	}
	return addresses, nil
}

// internalNetworkAddress returns the instance's jujunetwork.Address for the
// internal virtual network. This address is used to identify the machine in
// network security rules.
func (inst *azureInstance) internalNetworkAddress() (jujunetwork.Address, error) {
	inst.env.mu.Lock()
	subscriptionId := inst.env.config.subscriptionId
	resourceGroup := inst.env.resourceGroup
	controllerResourceGroup := inst.env.controllerResourceGroup
	inst.env.mu.Unlock()
	internalSubnetId := internalSubnetId(
		resourceGroup, controllerResourceGroup, subscriptionId,
	)

	for _, nic := range inst.networkInterfaces {
		if nic.Properties.IPConfigurations == nil {
			continue
		}
		for _, ipConfiguration := range *nic.Properties.IPConfigurations {
			if ipConfiguration.Properties.Subnet == nil {
				continue
			}
			if strings.ToLower(to.String(ipConfiguration.Properties.Subnet.ID)) != strings.ToLower(internalSubnetId) {
				continue
			}
			privateIpAddress := ipConfiguration.Properties.PrivateIPAddress
			if privateIpAddress == nil {
				continue
			}
			return jujunetwork.NewScopedAddress(
				to.String(privateIpAddress),
				jujunetwork.ScopeCloudLocal,
			), nil
		}
	}
	return jujunetwork.Address{}, errors.NotFoundf("internal network address")
}

func (v *azureVolumeSource) detachVolume(
	vm *compute.VirtualMachine,
	p storage.VolumeAttachmentParams,
) (updated bool) {

	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 i, disk := range dataDisks {
		if to.String(disk.Name) != p.VolumeId {
			continue
		}
		if to.String(disk.Vhd.URI) != vhdURI {
			continue
		}
		dataDisks = append(dataDisks[:i], dataDisks[i+1:]...)
		if len(dataDisks) == 0 {
			vm.Properties.StorageProfile.DataDisks = nil
		} else {
			*vm.Properties.StorageProfile.DataDisks = dataDisks
		}
		return true
	}
	return false
}

// nextSubnetIPAddress returns the next available IP address in the given subnet.
func nextSubnetIPAddress(
	nicClient network.InterfacesClient,
	resourceGroup string,
	subnet *network.Subnet,
) (string, error) {
	_, ipnet, err := net.ParseCIDR(to.String(subnet.Properties.AddressPrefix))
	if err != nil {
		return "", errors.Annotate(err, "parsing subnet prefix")
	}
	results, err := nicClient.List(resourceGroup)
	if err != nil {
		return "", errors.Annotate(err, "listing NICs")
	}
	// Azure reserves the first 4 addresses in the subnet.
	var ipsInUse []net.IP
	if results.Value != nil {
		ipsInUse = make([]net.IP, 0, len(*results.Value))
		for _, item := range *results.Value {
			if item.Properties.IPConfigurations == nil {
				continue
			}
			for _, ipConfiguration := range *item.Properties.IPConfigurations {
				if to.String(ipConfiguration.Properties.Subnet.ID) != to.String(subnet.ID) {
					continue
				}
				ip := net.ParseIP(to.String(ipConfiguration.Properties.PrivateIPAddress))
				if ip != nil {
					ipsInUse = append(ipsInUse, ip)
				}
			}
		}
	}
	ip, err := iputils.NextSubnetIP(ipnet, ipsInUse)
	if err != nil {
		return "", errors.Trace(err)
	}
	return ip.String(), nil
}

// JobListResultPreparer prepares a request to retrieve the next set of results. It returns
// nil if no more results exist.
func (client JobListResult) JobListResultPreparer() (*http.Request, error) {
	if client.NextLink == nil || len(to.String(client.NextLink)) <= 0 {
		return nil, nil
	}
	return autorest.Prepare(&http.Request{},
		autorest.AsJSON(),
		autorest.AsGet(),
		autorest.WithBaseURL(to.String(client.NextLink)))
}

// OperationResultCollectionPreparer prepares a request to retrieve the next set of results. It returns
// nil if no more results exist.
func (client OperationResultCollection) OperationResultCollectionPreparer() (*http.Request, error) {
	if client.Nextlink == nil || len(to.String(client.Nextlink)) <= 0 {
		return nil, nil
	}
	return autorest.Prepare(&http.Request{},
		autorest.AsJSON(),
		autorest.AsGet(),
		autorest.WithBaseURL(to.String(client.Nextlink)))
}

// VirtualMachineScaleSetListWithLinkResultPreparer prepares a request to retrieve the next set of results. It returns
// nil if no more results exist.
func (client VirtualMachineScaleSetListWithLinkResult) VirtualMachineScaleSetListWithLinkResultPreparer() (*http.Request, error) {
	if client.NextLink == nil || len(to.String(client.NextLink)) <= 0 {
		return nil, nil
	}
	return autorest.Prepare(&http.Request{},
		autorest.AsJSON(),
		autorest.AsGet(),
		autorest.WithBaseURL(to.String(client.NextLink)))
}

// ResourceProviderOperationDetailListResultPreparer prepares a request to retrieve the next set of results. It returns
// nil if no more results exist.
func (client ResourceProviderOperationDetailListResult) ResourceProviderOperationDetailListResultPreparer() (*http.Request, error) {
	if client.NextLink == nil || len(to.String(client.NextLink)) <= 0 {
		return nil, nil
	}
	return autorest.Prepare(&http.Request{},
		autorest.AsJSON(),
		autorest.AsGet(),
		autorest.WithBaseURL(to.String(client.NextLink)))
}

// SharedAccessAuthorizationRuleListResultPreparer prepares a request to retrieve the next set of results. It returns
// nil if no more results exist.
func (client SharedAccessAuthorizationRuleListResult) SharedAccessAuthorizationRuleListResultPreparer() (*http.Request, error) {
	if client.NextLink == nil || len(to.String(client.NextLink)) <= 0 {
		return nil, nil
	}
	return autorest.Prepare(&http.Request{},
		autorest.AsJSON(),
		autorest.AsGet(),
		autorest.WithBaseURL(to.String(client.NextLink)))
}

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 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))
		}
	}
}

// deleteInstanceNetworkSecurityRules deletes network security rules in the
// internal network security group that correspond to the specified machine.
//
// This is expected to delete *all* security rules related to the instance,
// i.e. both the ones opened by OpenPorts above, and the ones opened for API
// access.
func deleteInstanceNetworkSecurityRules(
	resourceGroup string, id instance.Id,
	nsgClient network.SecurityGroupsClient,
	securityRuleClient network.SecurityRulesClient,
) error {
	nsg, err := nsgClient.Get(resourceGroup, internalSecurityGroupName)
	if err != nil {
		return errors.Annotate(err, "querying network security group")
	}
	if nsg.Properties.SecurityRules == nil {
		return nil
	}
	prefix := instanceNetworkSecurityRulePrefix(id)
	for _, rule := range *nsg.Properties.SecurityRules {
		ruleName := to.String(rule.Name)
		if !strings.HasPrefix(ruleName, prefix) {
			continue
		}
		result, err := securityRuleClient.Delete(
			resourceGroup,
			internalSecurityGroupName,
			ruleName,
		)
		if err != nil {
			if result.Response == nil || result.StatusCode != http.StatusNotFound {
				return errors.Annotatef(err, "deleting security rule %q", ruleName)
			}
		}
	}
	return nil
}

// Status is specified in the Instance interface.
func (inst *azureInstance) Status() string {
	// NOTE(axw) ideally we would use the power state, but that is only
	// available when using the "instance view". Instance view is only
	// delivered when explicitly requested, and you can only request it
	// when querying a single VM. This means the results of AllInstances
	// or Instances would have the instance view missing.
	return to.String(inst.Properties.ProvisioningState)
}

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")
}

func (s *environSuite) assertStartInstanceRequests(c *gc.C) startInstanceRequests {
	// Clear the fields that don't get sent in the request.
	s.publicIPAddress.ID = nil
	s.publicIPAddress.Name = nil
	s.publicIPAddress.Properties.IPAddress = nil
	s.newNetworkInterface.ID = nil
	s.newNetworkInterface.Name = nil
	(*s.newNetworkInterface.Properties.IPConfigurations)[0].ID = nil
	s.jujuAvailabilitySet.ID = nil
	s.jujuAvailabilitySet.Name = nil
	s.virtualMachine.ID = nil
	s.virtualMachine.Name = nil
	s.virtualMachine.Properties.ProvisioningState = nil

	// Validate HTTP request bodies.
	c.Assert(s.requests, gc.HasLen, 8)
	c.Assert(s.requests[0].Method, gc.Equals, "GET") // vmSizes
	c.Assert(s.requests[1].Method, gc.Equals, "GET") // juju-testenv-model-deadbeef-0bad-400d-8000-4b1d0d06f00d
	c.Assert(s.requests[2].Method, gc.Equals, "GET") // skus
	c.Assert(s.requests[3].Method, gc.Equals, "PUT")
	assertRequestBody(c, s.requests[3], s.publicIPAddress)
	c.Assert(s.requests[4].Method, gc.Equals, "GET") // NICs
	c.Assert(s.requests[5].Method, gc.Equals, "PUT")
	assertRequestBody(c, s.requests[5], s.newNetworkInterface)
	c.Assert(s.requests[6].Method, gc.Equals, "PUT")
	assertRequestBody(c, s.requests[6], s.jujuAvailabilitySet)
	c.Assert(s.requests[7].Method, gc.Equals, "PUT")

	// CustomData is non-deterministic, so don't compare it.
	// TODO(axw) shouldn't CustomData be deterministic? Look into this.
	var virtualMachine compute.VirtualMachine
	unmarshalRequestBody(c, s.requests[7], &virtualMachine)
	c.Assert(to.String(virtualMachine.Properties.OsProfile.CustomData), gc.Not(gc.HasLen), 0)
	virtualMachine.Properties.OsProfile.CustomData = to.StringPtr("<juju-goes-here>")
	c.Assert(&virtualMachine, jc.DeepEquals, s.virtualMachine)

	return startInstanceRequests{
		vmSizes:          s.requests[0],
		subnet:           s.requests[1],
		skus:             s.requests[2],
		publicIPAddress:  s.requests[3],
		nics:             s.requests[4],
		networkInterface: s.requests[5],
		availabilitySet:  s.requests[6],
		virtualMachine:   s.requests[7],
	}
}