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config.go
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config.go
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package digitalocean
import (
"errors"
"fmt"
"os"
"time"
"github.com/mitchellh/mapstructure"
"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"
)
type Config struct {
common.PackerConfig `mapstructure:",squash"`
Comm communicator.Config `mapstructure:",squash"`
APIToken string `mapstructure:"api_token"`
Region string `mapstructure:"region"`
Size string `mapstructure:"size"`
Image string `mapstructure:"image"`
PrivateNetworking bool `mapstructure:"private_networking"`
SnapshotName string `mapstructure:"snapshot_name"`
StateTimeout time.Duration `mapstructure:"state_timeout"`
DropletName string `mapstructure:"droplet_name"`
UserData string `mapstructure:"user_data"`
ctx interpolate.Context
}
func NewConfig(raws ...interface{}) (*Config, []string, error) {
c := new(Config)
var md mapstructure.Metadata
err := config.Decode(c, &config.DecodeOpts{
Metadata: &md,
Interpolate: true,
InterpolateContext: &c.ctx,
InterpolateFilter: &interpolate.RenderFilter{
Exclude: []string{
"run_command",
},
},
}, raws...)
if err != nil {
return nil, nil, err
}
// Defaults
if c.APIToken == "" {
// Default to environment variable for api_token, if it exists
c.APIToken = os.Getenv("DIGITALOCEAN_API_TOKEN")
}
if c.SnapshotName == "" {
def, err := interpolate.Render("packer-{{timestamp}}", nil)
if err != nil {
panic(err)
}
// Default to packer-{{ unix timestamp (utc) }}
c.SnapshotName = def
}
if c.DropletName == "" {
// Default to packer-[time-ordered-uuid]
c.DropletName = fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
}
if c.Comm.SSHUsername == "" {
// Default to "root". You can override this if your
// SourceImage has a different user account then the DO default
c.Comm.SSHUsername = "root"
}
if c.StateTimeout == 0 {
// Default to 6 minute timeouts waiting for
// desired state. i.e waiting for droplet to become active
c.StateTimeout = 6 * time.Minute
}
var errs *packer.MultiError
if es := c.Comm.Prepare(&c.ctx); len(es) > 0 {
errs = packer.MultiErrorAppend(errs, es...)
}
if c.APIToken == "" {
// Required configurations that will display errors if not set
errs = packer.MultiErrorAppend(
errs, errors.New("api_token for auth must be specified"))
}
if c.Region == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("region is required"))
}
if c.Size == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("size is required"))
}
if c.Image == "" {
errs = packer.MultiErrorAppend(
errs, errors.New("image is required"))
}
if errs != nil && len(errs.Errors) > 0 {
return nil, nil, errs
}
common.ScrubConfig(c, c.APIToken)
return c, nil, nil
}