mirror of https://github.com/knative/client.git
131 lines
3.7 KiB
Go
131 lines
3.7 KiB
Go
// Copyright © 2019 The Knative Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package serving
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import (
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"strconv"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"knative.dev/serving/pkg/apis/autoscaling"
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servingv1 "knative.dev/serving/pkg/apis/serving/v1"
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)
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type Scaling struct {
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Min *int
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Max *int
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}
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// ContainerOfRevisionSpec returns the 'main' container of a revision specification and
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// use GetServingContainerIndex to identify the container.
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// Nil is returned if no such container could be found
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func ContainerOfRevisionSpec(revisionSpec *servingv1.RevisionSpec) *corev1.Container {
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idx := ContainerIndexOfRevisionSpec(revisionSpec)
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if idx == -1 {
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return nil
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}
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return &revisionSpec.Containers[0]
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}
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// ContainerIndexOfRevisionSpec returns the index of the "main" container if
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// multiple containers are present. The main container is either the single
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// container when there is only ony container in the list or the first container
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// which has a ports declaration (validation guarantees that there is only one
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// such container)
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// If no container could be found (list is empty or no container has a port declaration)
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// then -1 is returned
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// This method's logic is taken from RevisionSpec.GetContainer()
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func ContainerIndexOfRevisionSpec(revisionSpec *servingv1.RevisionSpec) int {
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switch {
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case len(revisionSpec.Containers) == 1:
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return 0
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case len(revisionSpec.Containers) > 1:
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for i := range revisionSpec.Containers {
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if len(revisionSpec.Containers[i].Ports) != 0 {
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return i
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}
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}
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}
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return -1
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}
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// ContainerStatus returns the status of the main container or nil of no
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// such status could be found
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func ContainerStatus(r *servingv1.Revision) *servingv1.ContainerStatus {
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idx := ContainerIndexOfRevisionSpec(&r.Spec)
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if idx < 0 || idx >= len(r.Status.ContainerStatuses) {
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return nil
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}
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return &r.Status.ContainerStatuses[idx]
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}
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func ScalingInfo(m *metav1.ObjectMeta) (*Scaling, error) {
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ret := &Scaling{}
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var err error
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ret.Min, err = annotationAsInt(m, autoscaling.MinScaleAnnotationKey)
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if err != nil {
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return nil, err
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}
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ret.Max, err = annotationAsInt(m, autoscaling.MaxScaleAnnotationKey)
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if err != nil {
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return nil, err
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}
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return ret, nil
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}
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func UserImage(m *metav1.ObjectMeta) string {
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return m.Annotations[UserImageAnnotationKey]
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}
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func ConcurrencyTarget(m *metav1.ObjectMeta) *int {
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ret, _ := annotationAsInt(m, autoscaling.TargetAnnotationKey)
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return ret
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}
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func ConcurrencyTargetUtilization(m *metav1.ObjectMeta) *int {
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ret, _ := annotationAsInt(m, autoscaling.TargetUtilizationPercentageKey)
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return ret
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}
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func AutoscaleWindow(m *metav1.ObjectMeta) string {
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return m.Annotations[autoscaling.WindowAnnotationKey]
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}
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func Port(revisionSpec *servingv1.RevisionSpec) *int32 {
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c := ContainerOfRevisionSpec(revisionSpec)
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if c == nil {
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return nil
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}
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if len(c.Ports) > 0 {
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p := c.Ports[0].ContainerPort
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return &p
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}
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return nil
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}
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// =======================================================================================
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func annotationAsInt(m *metav1.ObjectMeta, annotationKey string) (*int, error) {
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annos := m.Annotations
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if val, ok := annos[annotationKey]; ok {
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valInt, err := strconv.Atoi(val)
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if err != nil {
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return nil, err
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}
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return &valInt, nil
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}
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return nil, nil
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}
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