github.com/marksheahan/packer@v0.10.2-0.20160613200515-1acb2d6645a0/builder/googlecompute/config.go (about)

     1  package googlecompute
     2  
     3  import (
     4  	"errors"
     5  	"fmt"
     6  	"regexp"
     7  	"time"
     8  
     9  	"github.com/mitchellh/packer/common"
    10  	"github.com/mitchellh/packer/common/uuid"
    11  	"github.com/mitchellh/packer/helper/communicator"
    12  	"github.com/mitchellh/packer/helper/config"
    13  	"github.com/mitchellh/packer/packer"
    14  	"github.com/mitchellh/packer/template/interpolate"
    15  )
    16  
    17  var reImageFamily = regexp.MustCompile(`^[a-z]([-a-z0-9]{0,61}[a-z0-9])?$`)
    18  
    19  // Config is the configuration structure for the GCE builder. It stores
    20  // both the publicly settable state as well as the privately generated
    21  // state of the config object.
    22  type Config struct {
    23  	common.PackerConfig `mapstructure:",squash"`
    24  	Comm                communicator.Config `mapstructure:",squash"`
    25  
    26  	AccountFile string `mapstructure:"account_file"`
    27  	ProjectId   string `mapstructure:"project_id"`
    28  
    29  	DiskName             string            `mapstructure:"disk_name"`
    30  	DiskSizeGb           int64             `mapstructure:"disk_size"`
    31  	DiskType             string            `mapstructure:"disk_type"`
    32  	ImageName            string            `mapstructure:"image_name"`
    33  	ImageDescription     string            `mapstructure:"image_description"`
    34  	ImageFamily          string            `mapstructure:"image_family"`
    35  	InstanceName         string            `mapstructure:"instance_name"`
    36  	MachineType          string            `mapstructure:"machine_type"`
    37  	Metadata             map[string]string `mapstructure:"metadata"`
    38  	Network              string            `mapstructure:"network"`
    39  	Subnetwork           string            `mapstructure:"subnetwork"`
    40  	Address              string            `mapstructure:"address"`
    41  	Preemptible          bool              `mapstructure:"preemptible"`
    42  	SourceImage          string            `mapstructure:"source_image"`
    43  	SourceImageProjectId string            `mapstructure:"source_image_project_id"`
    44  	RawStateTimeout      string            `mapstructure:"state_timeout"`
    45  	Tags                 []string          `mapstructure:"tags"`
    46  	UseInternalIP        bool              `mapstructure:"use_internal_ip"`
    47  	Region               string            `mapstructure:"region"`
    48  	Zone                 string            `mapstructure:"zone"`
    49  
    50  	account         accountFile
    51  	privateKeyBytes []byte
    52  	stateTimeout    time.Duration
    53  	ctx             interpolate.Context
    54  }
    55  
    56  func NewConfig(raws ...interface{}) (*Config, []string, error) {
    57  	c := new(Config)
    58  	err := config.Decode(c, &config.DecodeOpts{
    59  		Interpolate:        true,
    60  		InterpolateContext: &c.ctx,
    61  		InterpolateFilter: &interpolate.RenderFilter{
    62  			Exclude: []string{
    63  				"run_command",
    64  			},
    65  		},
    66  	}, raws...)
    67  	if err != nil {
    68  		return nil, nil, err
    69  	}
    70  
    71  	var errs *packer.MultiError
    72  
    73  	// Set defaults.
    74  	if c.Network == "" {
    75  		c.Network = "default"
    76  	}
    77  
    78  	if c.DiskSizeGb == 0 {
    79  		c.DiskSizeGb = 10
    80  	}
    81  
    82  	if c.DiskType == "" {
    83  		c.DiskType = "pd-standard"
    84  	}
    85  
    86  	if c.ImageDescription == "" {
    87  		c.ImageDescription = "Created by Packer"
    88  	}
    89  
    90  	if c.ImageName == "" {
    91  		img, err := interpolate.Render("packer-{{timestamp}}", nil)
    92  		if err != nil {
    93  			errs = packer.MultiErrorAppend(errs,
    94  				fmt.Errorf("Unable to parse image name: %s ", err))
    95  		} else {
    96  			c.ImageName = img
    97  		}
    98  	}
    99  
   100  	if len(c.ImageFamily) > 63 {
   101  		errs = packer.MultiErrorAppend(errs,
   102  			errors.New("Invalid image family: Must not be longer than 63 characters"))
   103  	}
   104  
   105  	if c.ImageFamily != "" {
   106  		if !reImageFamily.MatchString(c.ImageFamily) {
   107  			errs = packer.MultiErrorAppend(errs,
   108  				errors.New("Invalid image family: The first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash"))
   109  		}
   110  
   111  	}
   112  
   113  	if c.InstanceName == "" {
   114  		c.InstanceName = fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
   115  	}
   116  
   117  	if c.DiskName == "" {
   118  		c.DiskName = c.InstanceName
   119  	}
   120  
   121  	if c.MachineType == "" {
   122  		c.MachineType = "n1-standard-1"
   123  	}
   124  
   125  	if c.RawStateTimeout == "" {
   126  		c.RawStateTimeout = "5m"
   127  	}
   128  
   129  	if c.Comm.SSHUsername == "" {
   130  		c.Comm.SSHUsername = "root"
   131  	}
   132  
   133  	if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
   134  		errs = packer.MultiErrorAppend(errs, es...)
   135  	}
   136  
   137  	// Process required parameters.
   138  	if c.ProjectId == "" {
   139  		errs = packer.MultiErrorAppend(
   140  			errs, errors.New("a project_id must be specified"))
   141  	}
   142  
   143  	if c.SourceImage == "" {
   144  		errs = packer.MultiErrorAppend(
   145  			errs, errors.New("a source_image must be specified"))
   146  	}
   147  
   148  	if c.Zone == "" {
   149  		errs = packer.MultiErrorAppend(
   150  			errs, errors.New("a zone must be specified"))
   151  	}
   152  	if c.Region == "" && len(c.Zone) > 2 {
   153  		// get region from Zone
   154  		region := c.Zone[:len(c.Zone)-2]
   155  		c.Region = region
   156  	}
   157  
   158  	stateTimeout, err := time.ParseDuration(c.RawStateTimeout)
   159  	if err != nil {
   160  		errs = packer.MultiErrorAppend(
   161  			errs, fmt.Errorf("Failed parsing state_timeout: %s", err))
   162  	}
   163  	c.stateTimeout = stateTimeout
   164  
   165  	if c.AccountFile != "" {
   166  		if err := processAccountFile(&c.account, c.AccountFile); err != nil {
   167  			errs = packer.MultiErrorAppend(errs, err)
   168  		}
   169  	}
   170  
   171  	// Check for any errors.
   172  	if errs != nil && len(errs.Errors) > 0 {
   173  		return nil, nil, errs
   174  	}
   175  
   176  	return c, nil, nil
   177  }