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images.go
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images.go
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// Copyright DataStax, Inc.
// Please see the included license file for details.
package images
import (
"fmt"
"os"
"regexp"
"strings"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
configv1beta1 "github.com/k8ssandra/cass-operator/apis/config/v1beta1"
"github.com/pkg/errors"
)
var (
imageConfig *configv1beta1.ImageConfig
scheme = runtime.NewScheme()
)
const (
ValidDseVersionRegexp = "(6\\.[89]\\.\\d+)"
ValidHcdVersionRegexp = "(1\\.\\d+\\.\\d+)"
ValidOssVersionRegexp = "(3\\.11\\.\\d+)|(4\\.\\d+\\.\\d+)|(5\\.\\d+\\.\\d+)"
DefaultCassandraRepository = "k8ssandra/cass-management-api"
DefaultDSERepository = "datastax/dse-mgmtapi-6_8"
DefaultHCDRepository = "datastax/hcd"
)
func init() {
utilruntime.Must(configv1beta1.AddToScheme(scheme))
}
func ParseImageConfig(imageConfigFile string) error {
content, err := os.ReadFile(imageConfigFile)
if err != nil {
return fmt.Errorf("could not read file at %s", imageConfigFile)
}
if _, err = LoadImageConfig(content); err != nil {
err = errors.Wrapf(err, "unable to load imageConfig from %s", imageConfigFile)
return err
}
return nil
}
func LoadImageConfig(content []byte) (*configv1beta1.ImageConfig, error) {
codecs := serializer.NewCodecFactory(scheme)
parsedImageConfig := &configv1beta1.ImageConfig{}
if err := runtime.DecodeInto(codecs.UniversalDecoder(), content, parsedImageConfig); err != nil {
return nil, fmt.Errorf("could not decode file into runtime.Object: %v", err)
}
imageConfig = parsedImageConfig
return parsedImageConfig, nil
}
func IsDseVersionSupported(version string) bool {
validVersions := regexp.MustCompile(ValidDseVersionRegexp)
return validVersions.MatchString(version)
}
func IsOssVersionSupported(version string) bool {
validVersions := regexp.MustCompile(ValidOssVersionRegexp)
return validVersions.MatchString(version)
}
func IsHCDVersionSupported(version string) bool {
validVersions := regexp.MustCompile(ValidHcdVersionRegexp)
return validVersions.MatchString(version)
}
func stripRegistry(image string) string {
comps := strings.Split(image, "/")
if len(comps) > 1 && (strings.Contains(comps[0], ".") || strings.Contains(comps[0], ":")) {
return strings.Join(comps[1:], "/")
} else {
return image
}
}
func applyDefaultRegistryOverride(image string) string {
customRegistry := GetImageConfig().ImageRegistry
customRegistry = strings.TrimSuffix(customRegistry, "/")
if customRegistry == "" {
return image
} else {
imageNoRegistry := stripRegistry(image)
return fmt.Sprintf("%s/%s", customRegistry, imageNoRegistry)
}
}
func ApplyRegistry(image string) string {
return applyDefaultRegistryOverride(image)
}
func GetImageConfig() *configv1beta1.ImageConfig {
// For now, this is static configuration (updated only on start of the pod), even if the actual ConfigMap underneath is updated.
return imageConfig
}
func getCassandraContainerImageOverride(serverType, version string) (bool, string) {
// If there's a mapped volume with overrides in the ConfigMap, use these. Otherwise only calculate
images := GetImageConfig().Images
if images != nil {
if serverType == "dse" {
if value, found := images.DSEVersions[version]; found {
return true, value
}
}
if serverType == "cassandra" {
if value, found := images.CassandraVersions[version]; found {
return true, value
}
}
}
return false, ""
}
func getImageComponents(serverType string) (string, string) {
var defaultPrefix string
if serverType == "dse" {
defaultPrefix = DefaultDSERepository
}
if serverType == "cassandra" {
defaultPrefix = DefaultCassandraRepository
}
defaults := GetImageConfig().DefaultImages
if defaults != nil {
var component configv1beta1.ImageComponent
switch serverType {
case "dse":
component = defaults.DSEImageComponent
case "cassandra":
component = defaults.CassandraImageComponent
case "hcd":
component = defaults.HCDImageComponent
default:
component = defaults.CassandraImageComponent
}
if component.Repository != "" {
return component.Repository, component.Suffix
}
}
return defaultPrefix, ""
}
func GetCassandraImage(serverType, version string) (string, error) {
if found, image := getCassandraContainerImageOverride(serverType, version); found {
return ApplyRegistry(image), nil
}
switch serverType {
case "dse":
if !IsDseVersionSupported(version) {
return "", fmt.Errorf("server 'dse' and version '%s' do not work together", version)
}
case "cassandra":
if !IsOssVersionSupported(version) {
return "", fmt.Errorf("server 'cassandra' and version '%s' do not work together", version)
}
case "hcd":
if !IsHCDVersionSupported(version) {
return "", fmt.Errorf("server 'hcd' and version '%s' do not work together", version)
}
default:
return "", fmt.Errorf("server type '%s' is not supported", serverType)
}
prefix, suffix := getImageComponents(serverType)
return ApplyRegistry(fmt.Sprintf("%s:%s%s", prefix, version, suffix)), nil
}
func GetConfigBuilderImage() string {
return ApplyRegistry(GetImageConfig().Images.ConfigBuilder)
}
func GetClientImage() string {
return ApplyRegistry(GetImageConfig().Images.Client)
}
func GetSystemLoggerImage() string {
return ApplyRegistry(GetImageConfig().Images.SystemLogger)
}
func AddDefaultRegistryImagePullSecrets(podSpec *corev1.PodSpec) bool {
secretName := GetImageConfig().ImagePullSecret.Name
if secretName != "" {
podSpec.ImagePullSecrets = append(
podSpec.ImagePullSecrets,
corev1.LocalObjectReference{Name: secretName})
return true
}
return false
}