mirror of https://github.com/knative/client.git
124 lines
3.8 KiB
Go
124 lines
3.8 KiB
Go
// Copyright © 2020 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 service
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import (
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"errors"
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"fmt"
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"github.com/spf13/cobra"
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corev1 "k8s.io/api/core/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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servingv1 "knative.dev/serving/pkg/apis/serving/v1"
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"knative.dev/client/pkg/kn/commands"
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clientservingv1 "knative.dev/client/pkg/serving/v1"
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)
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var applyExample = `
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# Create an initial service with using 'kn service apply', if the service has not
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# been already created
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kn service apply s0 --image knativesamples/helloworld
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# Apply the service again which is a no-operation if none of the options changed
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kn service apply s0 --image knativesamples/helloworld
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# Add an environment variable to your service. Note, that you have to always fully
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# specify all parameters (in contrast to 'kn service update')
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kn service apply s0 --image knativesamples/helloworld --env foo=bar
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# Read the service declaration from a file
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kn service apply s0 --filename my-svc.yml
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`
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func NewServiceApplyCommand(p *commands.KnParams) *cobra.Command {
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var applyFlags ConfigurationEditFlags
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var waitFlags commands.WaitFlags
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serviceApplyCommand := &cobra.Command{
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Use: "apply NAME",
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Short: "Apply a service declaration",
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Example: applyExample,
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RunE: func(cmd *cobra.Command, args []string) (err error) {
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if len(args) != 1 && applyFlags.Filename == "" {
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return errors.New("'service apply' requires the service name given as single argument")
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}
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name := ""
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if len(args) == 1 {
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name = args[0]
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}
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namespace, err := p.GetNamespace(cmd)
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if err != nil {
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return err
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}
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var service *servingv1.Service
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applyFlags.RevisionName = ""
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if applyFlags.Filename == "" {
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service, err = constructService(cmd, applyFlags, name, namespace)
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} else {
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service, err = constructServiceFromFile(cmd, applyFlags, name, namespace)
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}
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if err != nil {
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return err
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}
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client, err := p.NewServingClient(namespace)
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if err != nil {
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return err
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}
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waitDoing, waitVerb, err := examineServiceForApply(cmd, client, service.Name)
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if err != nil {
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return err
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}
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hasChanged, err := client.ApplyService(service)
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if err != nil {
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return err
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}
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if !hasChanged {
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fmt.Fprintf(cmd.OutOrStdout(), "No changes to apply to service '%s'.\n", service.Name)
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return showUrl(client, service.Name, "unchanged", "", cmd.OutOrStdout())
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}
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return waitIfRequested(client, service.Name, waitFlags, waitDoing, waitVerb, cmd.OutOrStdout())
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},
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}
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commands.AddNamespaceFlags(serviceApplyCommand.Flags(), false)
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applyFlags.AddCreateFlags(serviceApplyCommand)
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waitFlags.AddConditionWaitFlags(serviceApplyCommand, commands.WaitDefaultTimeout, "apply", "service", "ready")
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return serviceApplyCommand
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}
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func examineServiceForApply(cmd *cobra.Command, client clientservingv1.KnServingClient, serviceName string) (string, string, error) {
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currentService, err := client.GetService(serviceName)
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if err != nil {
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if apierrors.IsNotFound(err) {
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return "Creating", "created", nil
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}
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return "", "", err
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}
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annotationMap := currentService.Annotations
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if annotationMap != nil {
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if _, ok := annotationMap[corev1.LastAppliedConfigAnnotation]; !ok {
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fmt.Fprintf(cmd.OutOrStdout(), "Warning: 'kn service apply' should be used only for services created by 'kn service apply'\n")
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}
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}
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return "Applying", "applied", nil
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}
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