packer-cn/builder/openstack/run_config.go

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package openstack
import (
"errors"
"fmt"
"github.com/mitchellh/packer/packer"
"time"
)
// RunConfig contains configuration for running an instance from a source
// image and details on how to access that launched image.
type RunConfig struct {
SourceImage string `mapstructure:"source_image"`
Flavor string `mapstructure:"flavor"`
RawSSHTimeout string `mapstructure:"ssh_timeout"`
SSHUsername string `mapstructure:"ssh_username"`
SSHPort int `mapstructure:"ssh_port"`
OpenstackProvider string `mapstructure:"openstack_provider"`
// Unexported fields that are calculated from others
sshTimeout time.Duration
}
func (c *RunConfig) Prepare(t *packer.ConfigTemplate) []error {
if t == nil {
var err error
t, err = packer.NewConfigTemplate()
if err != nil {
return []error{err}
}
}
// Defaults
if c.SSHUsername == "" {
c.SSHUsername = "root"
}
if c.SSHPort == 0 {
c.SSHPort = 22
}
if c.RawSSHTimeout == "" {
c.RawSSHTimeout = "5m"
}
// Validation
var err error
errs := make([]error, 0)
if c.SourceImage == "" {
errs = append(errs, errors.New("A source_image must be specified"))
}
if c.Flavor == "" {
errs = append(errs, errors.New("A flavor must be specified"))
}
if c.SSHUsername == "" {
errs = append(errs, errors.New("An ssh_username must be specified"))
}
templates := map[string]*string{
"flavlor": &c.Flavor,
"ssh_timeout": &c.RawSSHTimeout,
"ssh_username": &c.SSHUsername,
"source_image": &c.SourceImage,
}
for n, ptr := range templates {
var err error
*ptr, err = t.Process(*ptr, nil)
if err != nil {
errs = append(
errs, fmt.Errorf("Error processing %s: %s", n, err))
}
}
c.sshTimeout, err = time.ParseDuration(c.RawSSHTimeout)
if err != nil {
errs = append(errs, fmt.Errorf("Failed parsing ssh_timeout: %s", err))
}
return errs
}
func (c *RunConfig) SSHTimeout() time.Duration {
return c.sshTimeout
}