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validation.go
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validation.go
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package validation
import (
"fmt"
"net/url"
kapi "k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/validation"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/pkg/util/fielderrors"
oapi "github.com/openshift/origin/pkg/api"
buildapi "github.com/openshift/origin/pkg/build/api"
buildutil "github.com/openshift/origin/pkg/build/util"
imageapi "github.com/openshift/origin/pkg/image/api"
)
// ValidateBuild tests required fields for a Build.
func ValidateBuild(build *buildapi.Build) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
allErrs = append(allErrs, validation.ValidateObjectMeta(&build.ObjectMeta, true, validation.NameIsDNSSubdomain).Prefix("metadata")...)
allErrs = append(allErrs, validateBuildSpec(&build.Spec).Prefix("spec")...)
return allErrs
}
func ValidateBuildUpdate(build *buildapi.Build, older *buildapi.Build) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
allErrs = append(allErrs, validation.ValidateObjectMetaUpdate(&build.ObjectMeta, &older.ObjectMeta).Prefix("metadata")...)
allErrs = append(allErrs, ValidateBuild(build)...)
if !kapi.Semantic.DeepEqual(build.Spec, older.Spec) {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("spec", build.Spec, "spec is immutable"))
}
return allErrs
}
// refKey returns a key for the given ObjectReference. If the ObjectReference
// doesn't include a namespace, the passed in namespace is used for the reference
func refKey(namespace string, ref *kapi.ObjectReference) string {
if ref == nil || ref.Kind != "ImageStreamTag" {
return "nil"
}
ns := ref.Namespace
if ns == "" {
ns = namespace
}
return fmt.Sprintf("%s/%s", ns, ref.Name)
}
// ValidateBuildConfig tests required fields for a Build.
func ValidateBuildConfig(config *buildapi.BuildConfig) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
allErrs = append(allErrs, validation.ValidateObjectMeta(&config.ObjectMeta, true, validation.NameIsDNSSubdomain).Prefix("metadata")...)
// image change triggers that refer
fromRefs := map[string]struct{}{}
for i, trg := range config.Spec.Triggers {
allErrs = append(allErrs, validateTrigger(&trg).PrefixIndex(i).Prefix("triggers")...)
if trg.Type != buildapi.ImageChangeBuildTriggerType || trg.ImageChange == nil {
continue
}
from := trg.ImageChange.From
if from == nil {
from = buildutil.GetImageStreamForStrategy(config.Spec.Strategy)
}
fromKey := refKey(config.Namespace, from)
_, exists := fromRefs[fromKey]
if exists {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("triggers", config.Spec.Triggers, "multiple ImageChange triggers refer to the same image stream tag"))
}
fromRefs[fromKey] = struct{}{}
}
allErrs = append(allErrs, validateBuildSpec(&config.Spec.BuildSpec).Prefix("spec")...)
return allErrs
}
func ValidateBuildConfigUpdate(config *buildapi.BuildConfig, older *buildapi.BuildConfig) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
allErrs = append(allErrs, validation.ValidateObjectMetaUpdate(&config.ObjectMeta, &older.ObjectMeta).Prefix("metadata")...)
allErrs = append(allErrs, ValidateBuildConfig(config)...)
return allErrs
}
// ValidateBuildRequest validates a BuildRequest object
func ValidateBuildRequest(request *buildapi.BuildRequest) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
allErrs = append(allErrs, validation.ValidateObjectMeta(&request.ObjectMeta, true, oapi.MinimalNameRequirements).Prefix("metadata")...)
if request.Revision != nil {
allErrs = append(allErrs, validateRevision(request.Revision).Prefix("revision")...)
}
return allErrs
}
func validateBuildSpec(spec *buildapi.BuildSpec) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
isCustomBuild := spec.Strategy.Type == buildapi.CustomBuildStrategyType
// Validate 'source' and 'output' for all build types except Custom build
// where they are optional and validated only if present.
if !isCustomBuild || (isCustomBuild && len(spec.Source.Type) != 0) {
allErrs = append(allErrs, validateSource(&spec.Source).Prefix("source")...)
if spec.Revision != nil {
allErrs = append(allErrs, validateRevision(spec.Revision).Prefix("revision")...)
}
}
allErrs = append(allErrs, validateOutput(&spec.Output).Prefix("output")...)
allErrs = append(allErrs, validateStrategy(&spec.Strategy).Prefix("strategy")...)
// TODO: validate resource requirements (prereq: https://github.com/kubernetes/kubernetes/pull/7059)
return allErrs
}
func validateSource(input *buildapi.BuildSource) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
if input.Type != buildapi.BuildSourceGit {
allErrs = append(allErrs, fielderrors.NewFieldRequired("type"))
}
if input.Git == nil {
allErrs = append(allErrs, fielderrors.NewFieldRequired("git"))
} else {
allErrs = append(allErrs, validateGitSource(input.Git).Prefix("git")...)
}
allErrs = append(allErrs, validateSecretRef(input.SourceSecret).Prefix("sourceSecret")...)
return allErrs
}
func validateSecretRef(ref *kapi.LocalObjectReference) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
if ref == nil {
return allErrs
}
if len(ref.Name) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("name"))
}
return allErrs
}
func validateGitSource(git *buildapi.GitBuildSource) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
if len(git.URI) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("uri"))
} else if !isValidURL(git.URI) {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("uri", git.URI, "uri is not a valid url"))
}
if len(git.HTTPProxy) != 0 && !isValidURL(git.HTTPProxy) {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("httpproxy", git.HTTPProxy, "proxy is not a valid url"))
}
if len(git.HTTPSProxy) != 0 && !isValidURL(git.HTTPSProxy) {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("httpsproxy", git.HTTPSProxy, "proxy is not a valid url"))
}
return allErrs
}
func validateRevision(revision *buildapi.SourceRevision) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
if len(revision.Type) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("type"))
}
// TODO: validate other stuff
return allErrs
}
func validateToImageReference(reference *kapi.ObjectReference) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
kind, name, namespace := reference.Kind, reference.Name, reference.Namespace
switch kind {
case "ImageStreamTag":
if len(name) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("name"))
} else if _, _, ok := imageapi.SplitImageStreamTag(name); !ok {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("name", name, "ImageStreamTag object references must be in the form <name>:<tag>"))
}
if len(namespace) != 0 && !util.IsDNS1123Subdomain(namespace) {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("namespace", namespace, "namespace must be a valid subdomain"))
}
case "DockerImage":
if len(namespace) != 0 {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("namespace", namespace, "namespace is not valid when used with a 'DockerImage'"))
}
if _, err := imageapi.ParseDockerImageReference(name); err != nil {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("name", name, fmt.Sprintf("name is not a valid Docker pull specification: %v", err)))
}
case "":
allErrs = append(allErrs, fielderrors.NewFieldRequired("kind"))
default:
allErrs = append(allErrs, fielderrors.NewFieldInvalid("kind", kind, "the target of build output must be an 'ImageStreamTag' or 'DockerImage'"))
}
return allErrs
}
func validateFromImageReference(reference *kapi.ObjectReference) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
kind, name, namespace := reference.Kind, reference.Name, reference.Namespace
switch kind {
case "ImageStreamTag":
if len(name) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("name"))
} else if _, _, ok := imageapi.SplitImageStreamTag(name); !ok {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("name", name, "ImageStreamTag object references must be in the form <name>:<tag>"))
}
if len(namespace) != 0 && !util.IsDNS1123Subdomain(namespace) {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("namespace", namespace, "namespace must be a valid subdomain"))
}
case "DockerImage":
if len(namespace) != 0 {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("namespace", namespace, "namespace is not valid when used with a 'DockerImage'"))
}
if len(name) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("name"))
} else if _, err := imageapi.ParseDockerImageReference(name); err != nil {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("name", name, fmt.Sprintf("name is not a valid Docker pull specification: %v", err)))
}
case "ImageStreamImage":
if len(name) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("name"))
}
if len(namespace) != 0 && !util.IsDNS1123Subdomain(namespace) {
allErrs = append(allErrs, fielderrors.NewFieldInvalid("namespace", namespace, "namespace must be a valid subdomain"))
}
case "":
allErrs = append(allErrs, fielderrors.NewFieldRequired("kind"))
default:
allErrs = append(allErrs, fielderrors.NewFieldInvalid("kind", kind, "the source of a builder image must be an 'ImageStreamTag', 'ImageStreamImage', or 'DockerImage'"))
}
return allErrs
}
func validateOutput(output *buildapi.BuildOutput) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
// TODO: make part of a generic ValidateObjectReference method upstream.
if output.To != nil {
allErrs = append(allErrs, validateToImageReference(output.To).Prefix("to")...)
}
allErrs = append(allErrs, validateSecretRef(output.PushSecret).Prefix("pushSecret")...)
return allErrs
}
func validateStrategy(strategy *buildapi.BuildStrategy) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
switch {
case len(strategy.Type) == 0:
allErrs = append(allErrs, fielderrors.NewFieldRequired("type"))
case strategy.Type == buildapi.SourceBuildStrategyType:
if strategy.SourceStrategy == nil {
allErrs = append(allErrs, fielderrors.NewFieldRequired("stiStrategy"))
} else {
allErrs = append(allErrs, validateSourceStrategy(strategy.SourceStrategy).Prefix("stiStrategy")...)
}
case strategy.Type == buildapi.DockerBuildStrategyType:
if strategy.DockerStrategy == nil {
allErrs = append(allErrs, fielderrors.NewFieldRequired("dockerStrategy"))
} else {
allErrs = append(allErrs, validateDockerStrategy(strategy.DockerStrategy).Prefix("dockerStrategy")...)
}
case strategy.Type == buildapi.CustomBuildStrategyType:
if strategy.CustomStrategy == nil {
allErrs = append(allErrs, fielderrors.NewFieldRequired("customStrategy"))
} else {
allErrs = append(allErrs, validateCustomStrategy(strategy.CustomStrategy).Prefix("customStrategy")...)
}
default:
allErrs = append(allErrs, fielderrors.NewFieldInvalid("type", strategy.Type, "type is not in the enumerated list"))
}
return allErrs
}
func validateDockerStrategy(strategy *buildapi.DockerBuildStrategy) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
if strategy.From != nil {
allErrs = append(allErrs, validateFromImageReference(strategy.From).Prefix("from")...)
}
allErrs = append(allErrs, validateSecretRef(strategy.PullSecret).Prefix("pullSecret")...)
return allErrs
}
func validateSourceStrategy(strategy *buildapi.SourceBuildStrategy) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
allErrs = append(allErrs, validateFromImageReference(&strategy.From).Prefix("from")...)
allErrs = append(allErrs, validateSecretRef(strategy.PullSecret).Prefix("pullSecret")...)
return allErrs
}
func validateCustomStrategy(strategy *buildapi.CustomBuildStrategy) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
allErrs = append(allErrs, validateFromImageReference(&strategy.From).Prefix("from")...)
allErrs = append(allErrs, validateSecretRef(strategy.PullSecret).Prefix("pullSecret")...)
return allErrs
}
func validateTrigger(trigger *buildapi.BuildTriggerPolicy) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
if len(trigger.Type) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("type"))
return allErrs
}
// Validate each trigger type
switch trigger.Type {
case buildapi.GitHubWebHookBuildTriggerType:
if trigger.GitHubWebHook == nil {
allErrs = append(allErrs, fielderrors.NewFieldRequired("github"))
} else {
allErrs = append(allErrs, validateWebHook(trigger.GitHubWebHook).Prefix("github")...)
}
case buildapi.GenericWebHookBuildTriggerType:
if trigger.GenericWebHook == nil {
allErrs = append(allErrs, fielderrors.NewFieldRequired("generic"))
} else {
allErrs = append(allErrs, validateWebHook(trigger.GenericWebHook).Prefix("generic")...)
}
case buildapi.ImageChangeBuildTriggerType:
if trigger.ImageChange == nil {
allErrs = append(allErrs, fielderrors.NewFieldRequired("imageChange"))
break
}
if trigger.ImageChange.From == nil {
break
}
if kind := trigger.ImageChange.From.Kind; kind != "ImageStreamTag" {
invalidKindErr := fielderrors.NewFieldInvalid(
"imageChange.from.kind",
kind,
"only an ImageStreamTag type of reference is allowed in an ImageChange trigger.")
allErrs = append(allErrs, invalidKindErr)
break
}
allErrs = append(allErrs, validateFromImageReference(trigger.ImageChange.From).Prefix("from")...)
case buildapi.ConfigChangeBuildTriggerType:
// doesn't reuqire additional validation
default:
allErrs = append(allErrs, fielderrors.NewFieldInvalid("type", trigger.Type, "invalid trigger type"))
}
return allErrs
}
func validateWebHook(webHook *buildapi.WebHookTrigger) fielderrors.ValidationErrorList {
allErrs := fielderrors.ValidationErrorList{}
if len(webHook.Secret) == 0 {
allErrs = append(allErrs, fielderrors.NewFieldRequired("secret"))
}
return allErrs
}
func isValidURL(uri string) bool {
_, err := url.Parse(uri)
return err == nil
}