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config.go
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config.go
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package config
import (
"fmt"
"github.com/ghodss/yaml"
ctlres "github.com/k14s/kbld/pkg/kbld/resources"
)
const (
configAPIVersion = "kbld.k14s.io/v1alpha1"
sourcesKind = "Sources" // specify list of sources for building images
imageOverridesKind = "ImageOverrides" // specify alternative image urls
imageDestinationsKind = "ImageDestinations" // specify image push destinations
)
var (
configKinds = []string{sourcesKind, imageOverridesKind, imageDestinationsKind}
)
type Config struct {
APIVersion string `json:"apiVersion"`
Kind string
Sources []Source
Overrides []ImageOverride
Destinations []ImageDestination
}
type Source struct {
Image string
Path string
Docker SourceDockerOpts
}
type SourceDockerOpts struct {
Build SourceDockerBuildOpts
}
type SourceDockerBuildOpts struct {
Target *string
Pull *bool
NoCache *bool `json:"noCache"`
File *string
RawOptions *[]string `json:"rawOptions"`
}
type ImageOverride struct {
Image string
NewImage string `json:"newImage"`
Preresolved bool
}
type ImageDestination struct {
Image string
NewImage string `json:"newImage"`
}
func NewConfigFromResource(res ctlres.Resource) (Config, error) {
bs, err := res.AsYAMLBytes()
if err != nil {
return Config{}, err
}
var config Config
err = yaml.Unmarshal(bs, &config)
if err != nil {
return Config{}, fmt.Errorf("Unmarshaling %s: %s", res.Description(), err)
}
err = config.Validate()
if err != nil {
return Config{}, fmt.Errorf("Validating %s: %s", res.Description(), err)
}
for i, imageDst := range config.Destinations {
if len(imageDst.NewImage) == 0 {
imageDst.NewImage = imageDst.Image
}
config.Destinations[i] = imageDst
}
return config, nil
}
func (d Config) Validate() error {
for i, src := range d.Sources {
err := src.Validate()
if err != nil {
return fmt.Errorf("Validating Sources[%d]: %s", i, err)
}
}
for i, override := range d.Overrides {
err := override.Validate()
if err != nil {
return fmt.Errorf("Validating Overrides[%d]: %s", i, err)
}
}
for i, dst := range d.Destinations {
err := dst.Validate()
if err != nil {
return fmt.Errorf("Validating Destinations[%d]: %s", i, err)
}
}
return nil
}
func (d Source) Validate() error {
if len(d.Image) == 0 {
return fmt.Errorf("Expected Image to be non-empty")
}
if len(d.Path) == 0 {
return fmt.Errorf("Expected Path to be non-empty")
}
return nil
}
func (d ImageOverride) Validate() error {
if len(d.Image) == 0 {
return fmt.Errorf("Expected Image to be non-empty")
}
if len(d.NewImage) == 0 {
return fmt.Errorf("Expected NewImage to be non-empty")
}
return nil
}
func (d ImageDestination) Validate() error {
if len(d.Image) == 0 {
return fmt.Errorf("Expected Image to be non-empty")
}
return nil
}