packer-cn/builder/lxd/config.go

93 lines
2.9 KiB
Go

//go:generate packer-sdc struct-markdown
//go:generate packer-sdc mapstructure-to-hcl2 -type Config
package lxd
import (
"fmt"
"github.com/hashicorp/packer-plugin-sdk/common"
packersdk "github.com/hashicorp/packer-plugin-sdk/packer"
"github.com/hashicorp/packer-plugin-sdk/template/config"
"github.com/hashicorp/packer-plugin-sdk/template/interpolate"
"github.com/mitchellh/mapstructure"
)
type Config struct {
common.PackerConfig `mapstructure:",squash"`
// The name of the output artifact. Defaults to
// name.
OutputImage string `mapstructure:"output_image" required:"false"`
ContainerName string `mapstructure:"container_name"`
// Lets you prefix all builder commands, such as
// with ssh for a remote build host. Defaults to `{{.Command}}`; i.e. no
// wrapper.
CommandWrapper string `mapstructure:"command_wrapper" required:"false"`
// The source image to use when creating the build
// container. This can be a (local or remote) image (name or fingerprint).
// E.G. my-base-image, ubuntu-daily:x, 08fababf6f27, ...
Image string `mapstructure:"image" required:"true"`
Profile string `mapstructure:"profile"`
// The number of seconds to sleep between launching
// the LXD instance and provisioning it; defaults to 3 seconds.
InitSleep string `mapstructure:"init_sleep" required:"false"`
// Pass key values to the publish
// step to be set as properties on the output image. This is most helpful to
// set the description, but can be used to set anything needed. See
// https://stgraber.org/2016/03/30/lxd-2-0-image-management-512/
// for more properties.
PublishProperties map[string]string `mapstructure:"publish_properties" required:"false"`
// List of key/value pairs you wish to
// pass to lxc launch via --config. Defaults to empty.
LaunchConfig map[string]string `mapstructure:"launch_config" required:"false"`
ctx interpolate.Context
}
func (c *Config) Prepare(raws ...interface{}) error {
var md mapstructure.Metadata
err := config.Decode(c, &config.DecodeOpts{
Metadata: &md,
Interpolate: true,
}, raws...)
if err != nil {
return err
}
// Accumulate any errors
var errs *packersdk.MultiError
if c.ContainerName == "" {
c.ContainerName = fmt.Sprintf("packer-%s", c.PackerBuildName)
}
if c.OutputImage == "" {
c.OutputImage = c.ContainerName
}
if c.CommandWrapper == "" {
c.CommandWrapper = "{{.Command}}"
}
if c.Image == "" {
errs = packersdk.MultiErrorAppend(errs, fmt.Errorf("`image` is a required parameter for LXD. Please specify an image by alias or fingerprint. e.g. `ubuntu-daily:x`"))
}
if c.Profile == "" {
c.Profile = "default"
}
// Sadly we have to wait a few seconds for /tmp to be intialized and networking
// to finish starting. There isn't a great cross platform to check when things are ready.
if c.InitSleep == "" {
c.InitSleep = "3"
}
if errs != nil && len(errs.Errors) > 0 {
return errs
}
return nil
}