github.com/cloudfoundry-incubator/stembuild@v0.0.0-20211223202937-5b61d62226c6/package_stemcell/packagers/vcenter_packager.go (about)

     1  package packagers
     2  
     3  import (
     4  	"errors"
     5  	"fmt"
     6  	"io/ioutil"
     7  	"os"
     8  	"path"
     9  	"path/filepath"
    10  	"regexp"
    11  
    12  	"github.com/cloudfoundry-incubator/stembuild/filesystem"
    13  
    14  	"github.com/cloudfoundry-incubator/stembuild/package_stemcell/config"
    15  )
    16  
    17  //go:generate go run github.com/maxbrunsfeld/counterfeiter/v6 . IaasClient
    18  type IaasClient interface {
    19  	ValidateUrl() error
    20  	ValidateCredentials() error
    21  	FindVM(vmInventoryPath string) error
    22  	ExportVM(vmInventoryPath string, destination string) error
    23  	ListDevices(vmInventoryPath string) ([]string, error)
    24  	RemoveDevice(vmInventoryPath string, deviceName string) error
    25  	EjectCDRom(vmInventoryPath string, deviceName string) error
    26  }
    27  
    28  type VCenterPackager struct {
    29  	SourceConfig config.SourceConfig
    30  	OutputConfig config.OutputConfig
    31  	Client       IaasClient
    32  }
    33  
    34  func (v VCenterPackager) Package() error {
    35  	err := v.executeOnMatchingDevice(v.Client.RemoveDevice, "^(floppy-|ethernet-)")
    36  	if err != nil {
    37  		return err
    38  	}
    39  	err = v.executeOnMatchingDevice(v.Client.EjectCDRom, "^(cdrom-)")
    40  	if err != nil {
    41  		return err
    42  	}
    43  
    44  	workingDir, err := ioutil.TempDir(os.TempDir(), "vcenter-packager-working-directory")
    45  
    46  	if err != nil {
    47  		return errors.New("failed to create working directory")
    48  	}
    49  
    50  	stemcellDir, err := ioutil.TempDir(os.TempDir(), "vcenter-packager-stemcell-directory")
    51  	if err != nil {
    52  		return errors.New("failed to create stemcell directory")
    53  	}
    54  	err = v.Client.ExportVM(v.SourceConfig.VmInventoryPath, workingDir)
    55  
    56  	if err != nil {
    57  		return errors.New("failed to export the prepared VM")
    58  	}
    59  
    60  	fmt.Println("Converting VMDK into stemcell")
    61  	vmName := path.Base(v.SourceConfig.VmInventoryPath)
    62  	shaSum, err := TarGenerator(filepath.Join(stemcellDir, "image"), filepath.Join(workingDir, vmName))
    63  	manifestContents := CreateManifest(v.OutputConfig.Os, v.OutputConfig.StemcellVersion, shaSum)
    64  	err = WriteManifest(manifestContents, stemcellDir)
    65  
    66  	if err != nil {
    67  		return errors.New("failed to create stemcell.MF file")
    68  	}
    69  
    70  	stemcellFilename := StemcellFilename(v.OutputConfig.StemcellVersion, v.OutputConfig.Os)
    71  	_, err = TarGenerator(filepath.Join(v.OutputConfig.OutputDir, stemcellFilename), stemcellDir)
    72  
    73  	fmt.Printf("Stemcell successfully created: %s\n", stemcellFilename)
    74  	return nil
    75  }
    76  
    77  func (v VCenterPackager) executeOnMatchingDevice(action func(a, b string) error, devicePattern string) error {
    78  	deviceList, err := v.Client.ListDevices(v.SourceConfig.VmInventoryPath)
    79  	if err != nil {
    80  		return err
    81  	}
    82  
    83  	for _, deviceName := range deviceList {
    84  		matched, _ := regexp.MatchString(devicePattern, deviceName)
    85  		if matched {
    86  			err = action(v.SourceConfig.VmInventoryPath, deviceName)
    87  			if err != nil {
    88  				return err
    89  			}
    90  		}
    91  	}
    92  	return nil
    93  }
    94  
    95  func (v VCenterPackager) ValidateFreeSpaceForPackage(fs filesystem.FileSystem) error {
    96  	return nil
    97  }
    98  
    99  func (v VCenterPackager) ValidateSourceParameters() error {
   100  	err := v.Client.ValidateUrl()
   101  	if err != nil {
   102  		return err
   103  	}
   104  
   105  	err = v.Client.ValidateCredentials()
   106  	if err != nil {
   107  		return err
   108  	}
   109  	err = v.Client.FindVM(v.SourceConfig.VmInventoryPath)
   110  	if err != nil {
   111  		return err
   112  	}
   113  	return nil
   114  }