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config.go
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config.go
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package googlecompute
import (
"errors"
"fmt"
"time"
"github.com/mitchellh/packer/common"
"github.com/mitchellh/packer/common/uuid"
"github.com/mitchellh/packer/helper/communicator"
"github.com/mitchellh/packer/helper/config"
"github.com/mitchellh/packer/packer"
"github.com/mitchellh/packer/template/interpolate"
)
// Config is the configuration structure for the GCE builder. It stores
// both the publicly settable state as well as the privately generated
// state of the config object.
type Config struct {
common.PackerConfig `mapstructure:",squash"`
Comm communicator.Config `mapstructure:",squash"`
AccountFile string `mapstructure:"account_file"`
ProjectId string `mapstructure:"project_id"`
DiskName string `mapstructure:"disk_name"`
DiskSizeGb int64 `mapstructure:"disk_size"`
ImageName string `mapstructure:"image_name"`
ImageDescription string `mapstructure:"image_description"`
InstanceName string `mapstructure:"instance_name"`
MachineType string `mapstructure:"machine_type"`
Metadata map[string]string `mapstructure:"metadata"`
Network string `mapstructure:"network"`
SourceImage string `mapstructure:"source_image"`
SourceImageProjectId string `mapstructure:"source_image_project_id"`
RawStateTimeout string `mapstructure:"state_timeout"`
Tags []string `mapstructure:"tags"`
UseInternalIP bool `mapstructure:"use_internal_ip"`
Zone string `mapstructure:"zone"`
account accountFile
privateKeyBytes []byte
stateTimeout time.Duration
ctx interpolate.Context
}
func NewConfig(raws ...interface{}) (*Config, []string, error) {
c := new(Config)
err := config.Decode(c, &config.DecodeOpts{
Interpolate: true,
InterpolateContext: &c.ctx,
InterpolateFilter: &interpolate.RenderFilter{
Exclude: []string{
"run_command",
},
},
}, raws...)
if err != nil {
return nil, nil, err
}
var errs *packer.MultiError
// Set defaults.
if c.Network == "" {
c.Network = "default"
}
if c.DiskSizeGb == 0 {
c.DiskSizeGb = 10
}
if c.ImageDescription == "" {
c.ImageDescription = "Created by Packer"
}
if c.ImageName == "" {
img, err := interpolate.Render("packer-{{timestamp}}", nil)
if err != nil {
errs = packer.MultiErrorAppend(errs,
fmt.Errorf("Unable to parse image name: %s ", err))
c.ImageName = img
}
}
if c.InstanceName == "" {
c.InstanceName = fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
}
if c.DiskName == "" {
c.DiskName = c.InstanceName
}
if c.MachineType == "" {
c.MachineType = "n1-standard-1"
}
if c.RawStateTimeout == "" {
c.RawStateTimeout = "5m"
}
if c.Comm.SSHUsername == "" {
c.Comm.SSHUsername = "root"
}
if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
errs = packer.MultiErrorAppend(errs, es...)
}
// Process required parameters.
if c.ProjectId == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("a project_id must be specified"))
}
if c.SourceImage == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("a source_image must be specified"))
}
if c.Zone == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("a zone must be specified"))
}
stateTimeout, err := time.ParseDuration(c.RawStateTimeout)
if err != nil {
errs = packer.MultiErrorAppend(
errs, fmt.Errorf("Failed parsing state_timeout: %s", err))
}
c.stateTimeout = stateTimeout
if c.AccountFile != "" {
if err := loadJSON(&c.account, c.AccountFile); err != nil {
errs = packer.MultiErrorAppend(
errs, fmt.Errorf("Failed parsing account file: %s", err))
}
}
// Check for any errors.
if errs != nil && len(errs.Errors) > 0 {
return nil, nil, errs
}
return c, nil, nil
}