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180 lines
8.5 KiB
Go
180 lines
8.5 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validation
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import (
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"fmt"
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"reflect"
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"time"
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v1 "k8s.io/api/core/v1"
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eventsv1beta1 "k8s.io/api/events/v1beta1"
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apimachineryvalidation "k8s.io/apimachinery/pkg/api/validation"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/validation"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/kubernetes/pkg/apis/core"
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)
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const (
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ReportingInstanceLengthLimit = 128
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ActionLengthLimit = 128
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ReasonLengthLimit = 128
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NoteLengthLimit = 1024
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)
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func ValidateEventCreate(event *core.Event, requestVersion schema.GroupVersion) field.ErrorList {
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// Make sure events always pass legacy validation.
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allErrs := legacyValidateEvent(event)
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if requestVersion == v1.SchemeGroupVersion || requestVersion == eventsv1beta1.SchemeGroupVersion {
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// No further validation for backwards compatibility.
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return allErrs
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}
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// Strict validation applies to creation via events.k8s.io/v1 API and newer.
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allErrs = append(allErrs, ValidateObjectMeta(&event.ObjectMeta, true, apimachineryvalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...)
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allErrs = append(allErrs, validateV1EventSeries(event)...)
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zeroTime := time.Time{}
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if event.EventTime.Time == zeroTime {
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allErrs = append(allErrs, field.Required(field.NewPath("eventTime"), ""))
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}
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if event.Type != v1.EventTypeNormal && event.Type != v1.EventTypeWarning {
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allErrs = append(allErrs, field.Invalid(field.NewPath("type"), "", fmt.Sprintf("has invalid value: %v", event.Type)))
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}
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if event.FirstTimestamp.Time != zeroTime {
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allErrs = append(allErrs, field.Invalid(field.NewPath("firstTimestamp"), "", "needs to be unset"))
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}
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if event.LastTimestamp.Time != zeroTime {
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allErrs = append(allErrs, field.Invalid(field.NewPath("lastTimestamp"), "", "needs to be unset"))
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}
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if event.Count != 0 {
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allErrs = append(allErrs, field.Invalid(field.NewPath("count"), "", "needs to be unset"))
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}
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if event.Source.Component != "" || event.Source.Host != "" {
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allErrs = append(allErrs, field.Invalid(field.NewPath("source"), "", "needs to be unset"))
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}
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return allErrs
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}
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func ValidateEventUpdate(newEvent, oldEvent *core.Event, requestVersion schema.GroupVersion) field.ErrorList {
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// Make sure the new event always passes legacy validation.
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allErrs := legacyValidateEvent(newEvent)
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if requestVersion == v1.SchemeGroupVersion || requestVersion == eventsv1beta1.SchemeGroupVersion {
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// No further validation for backwards compatibility.
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return allErrs
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}
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// Strict validation applies to update via events.k8s.io/v1 API and newer.
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allErrs = append(allErrs, ValidateObjectMetaUpdate(&newEvent.ObjectMeta, &oldEvent.ObjectMeta, field.NewPath("metadata"))...)
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// if the series was modified, validate the new data
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if !reflect.DeepEqual(newEvent.Series, oldEvent.Series) {
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allErrs = append(allErrs, validateV1EventSeries(newEvent)...)
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}
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allErrs = append(allErrs, ValidateImmutableField(newEvent.InvolvedObject, oldEvent.InvolvedObject, field.NewPath("involvedObject"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Reason, oldEvent.Reason, field.NewPath("reason"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Message, oldEvent.Message, field.NewPath("message"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Source, oldEvent.Source, field.NewPath("source"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.FirstTimestamp, oldEvent.FirstTimestamp, field.NewPath("firstTimestamp"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.LastTimestamp, oldEvent.LastTimestamp, field.NewPath("lastTimestamp"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Count, oldEvent.Count, field.NewPath("count"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Reason, oldEvent.Reason, field.NewPath("reason"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Type, oldEvent.Type, field.NewPath("type"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.EventTime, oldEvent.EventTime, field.NewPath("eventTime"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Action, oldEvent.Action, field.NewPath("action"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.Related, oldEvent.Related, field.NewPath("related"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.ReportingController, oldEvent.ReportingController, field.NewPath("reportingController"))...)
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allErrs = append(allErrs, ValidateImmutableField(newEvent.ReportingInstance, oldEvent.ReportingInstance, field.NewPath("reportingInstance"))...)
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return allErrs
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}
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func validateV1EventSeries(event *core.Event) field.ErrorList {
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allErrs := field.ErrorList{}
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zeroTime := time.Time{}
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if event.Series != nil {
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if event.Series.Count < 2 {
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allErrs = append(allErrs, field.Invalid(field.NewPath("series.count"), "", "should be at least 2"))
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}
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if event.Series.LastObservedTime.Time == zeroTime {
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allErrs = append(allErrs, field.Required(field.NewPath("series.lastObservedTime"), ""))
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}
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}
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return allErrs
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}
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// legacyValidateEvent makes sure that the event makes sense.
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func legacyValidateEvent(event *core.Event) field.ErrorList {
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allErrs := field.ErrorList{}
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// Because go
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zeroTime := time.Time{}
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// "New" Events need to have EventTime set, so it's validating old object.
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if event.EventTime.Time == zeroTime {
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// Make sure event.Namespace and the involvedInvolvedObject.Namespace agree
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if len(event.InvolvedObject.Namespace) == 0 {
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// event.Namespace must also be empty (or "default", for compatibility with old clients)
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if event.Namespace != metav1.NamespaceNone && event.Namespace != metav1.NamespaceDefault {
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allErrs = append(allErrs, field.Invalid(field.NewPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, "does not match event.namespace"))
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}
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} else {
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// event namespace must match
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if event.Namespace != event.InvolvedObject.Namespace {
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allErrs = append(allErrs, field.Invalid(field.NewPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, "does not match event.namespace"))
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}
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}
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} else {
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if len(event.InvolvedObject.Namespace) == 0 && event.Namespace != metav1.NamespaceDefault && event.Namespace != metav1.NamespaceSystem {
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allErrs = append(allErrs, field.Invalid(field.NewPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, "does not match event.namespace"))
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}
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if len(event.ReportingController) == 0 {
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allErrs = append(allErrs, field.Required(field.NewPath("reportingController"), ""))
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}
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for _, msg := range validation.IsQualifiedName(event.ReportingController) {
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allErrs = append(allErrs, field.Invalid(field.NewPath("reportingController"), event.ReportingController, msg))
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}
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if len(event.ReportingInstance) == 0 {
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allErrs = append(allErrs, field.Required(field.NewPath("reportingInstance"), ""))
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}
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if len(event.ReportingInstance) > ReportingInstanceLengthLimit {
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allErrs = append(allErrs, field.Invalid(field.NewPath("reportingInstance"), "", fmt.Sprintf("can have at most %v characters", ReportingInstanceLengthLimit)))
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}
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if len(event.Action) == 0 {
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allErrs = append(allErrs, field.Required(field.NewPath("action"), ""))
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}
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if len(event.Action) > ActionLengthLimit {
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allErrs = append(allErrs, field.Invalid(field.NewPath("action"), "", fmt.Sprintf("can have at most %v characters", ActionLengthLimit)))
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}
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if len(event.Reason) == 0 {
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allErrs = append(allErrs, field.Required(field.NewPath("reason"), ""))
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}
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if len(event.Reason) > ReasonLengthLimit {
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allErrs = append(allErrs, field.Invalid(field.NewPath("reason"), "", fmt.Sprintf("can have at most %v characters", ReasonLengthLimit)))
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}
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if len(event.Message) > NoteLengthLimit {
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allErrs = append(allErrs, field.Invalid(field.NewPath("message"), "", fmt.Sprintf("can have at most %v characters", NoteLengthLimit)))
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}
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}
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for _, msg := range validation.IsDNS1123Subdomain(event.Namespace) {
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allErrs = append(allErrs, field.Invalid(field.NewPath("namespace"), event.Namespace, msg))
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}
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return allErrs
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}
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