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| 1 | +/* |
| 2 | +Copyright 2018 The Kubernetes Authors. |
| 3 | +
|
| 4 | +Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +you may not use this file except in compliance with the License. |
| 6 | +You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | +Unless required by applicable law or agreed to in writing, software |
| 11 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +See the License for the specific language governing permissions and |
| 14 | +limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package controller |
| 18 | + |
| 19 | +import ( |
| 20 | + "fmt" |
| 21 | + "log" |
| 22 | + "os" |
| 23 | + |
| 24 | + createutil "github.com/kubernetes-sigs/kubebuilder/cmd/kubebuilder/create/util" |
| 25 | + generatecmd "github.com/kubernetes-sigs/kubebuilder/cmd/kubebuilder/generate" |
| 26 | + "github.com/kubernetes-sigs/kubebuilder/cmd/kubebuilder/util" |
| 27 | + "github.com/markbates/inflect" |
| 28 | + "github.com/spf13/cobra" |
| 29 | + "strings" |
| 30 | +) |
| 31 | + |
| 32 | +type ControllerArguments struct { |
| 33 | + nonNamespacedKind bool |
| 34 | + generate bool |
| 35 | + CoreType bool |
| 36 | +} |
| 37 | + |
| 38 | +func AddCreateController(cmd *cobra.Command) { |
| 39 | + var c ControllerArguments |
| 40 | + |
| 41 | + createControllerCmd := &cobra.Command{ |
| 42 | + Use: "controller", |
| 43 | + Short: "Creates a controller for an API group, version and resource", |
| 44 | + Long: `Creates a controller for an API group, version and resource. |
| 45 | +
|
| 46 | +Also creates: |
| 47 | +- controller reconcile function |
| 48 | +- tests for the controller |
| 49 | +`, |
| 50 | + Example: `# Create a controller for resource "Bee" in the "insect" group with version "v1beta" |
| 51 | +kubebuilder create controller --group insect --version v1beta1 --kind Bee |
| 52 | +
|
| 53 | +# Create a controller for k8s core type "Deployment" in the "apps" group with version "v1beta2" |
| 54 | +kubebuilder create controller --group apps --version v1beta2 --kind Deployment --core-type |
| 55 | +`, |
| 56 | + Run: c.RunCreateController, |
| 57 | + } |
| 58 | + createutil.RegisterResourceFlags(createControllerCmd) |
| 59 | + createControllerCmd.Flags().BoolVar(&c.nonNamespacedKind, "non-namespaced", false, "if set, the API kind will be non namespaced") |
| 60 | + createControllerCmd.Flags().BoolVar(&c.generate, "generate", true, "generate controller code") |
| 61 | + createControllerCmd.Flags().BoolVar(&c.CoreType, "core-type", false, "generate controller for core type") |
| 62 | + cmd.AddCommand(createControllerCmd) |
| 63 | +} |
| 64 | + |
| 65 | +func (c *ControllerArguments) RunCreateController(cmd *cobra.Command, args []string) { |
| 66 | + if _, err := os.Stat("pkg"); err != nil { |
| 67 | + log.Fatalf("could not find 'pkg' directory. must run kubebuilder init before creating controller") |
| 68 | + } |
| 69 | + |
| 70 | + util.GetDomain() |
| 71 | + c.Validate() |
| 72 | + |
| 73 | + cr := util.GetCopyright(createutil.Copyright) |
| 74 | + |
| 75 | + fmt.Printf("Creating controller ...\n") |
| 76 | + c.CreateController(cr) |
| 77 | + if c.generate { |
| 78 | + fmt.Printf("Generating code for new controller... " + |
| 79 | + "Regenerate after editing controller files by running `kubebuilder generate clean; kubebuilder generate`.\n") |
| 80 | + generatecmd.RunGenerate(cmd, args) |
| 81 | + } |
| 82 | + fmt.Printf("Next: Run the controller and create an instance with:\n" + |
| 83 | + "$ GOBIN=${PWD}/bin go install ${PWD#$GOPATH/src/}/cmd/controller-manager\n" + |
| 84 | + "$ bin/controller-manager --kubeconfig ~/.kube/config\n" + |
| 85 | + "$ kubectl apply -f hack/sample/" + strings.ToLower(createutil.KindName) + ".yaml\n") |
| 86 | +} |
| 87 | + |
| 88 | +func (c *ControllerArguments) Validate() { |
| 89 | + createutil.ValidateResourceFlags() |
| 90 | +} |
| 91 | + |
| 92 | +func (c *ControllerArguments) CreateController(boilerplate string) { |
| 93 | + args := controllerTemplateArgs{ |
| 94 | + boilerplate, |
| 95 | + util.Domain, |
| 96 | + createutil.GroupName, |
| 97 | + createutil.VersionName, |
| 98 | + createutil.KindName, |
| 99 | + createutil.ResourceName, |
| 100 | + util.Repo, |
| 101 | + inflect.NewDefaultRuleset().Pluralize(createutil.KindName), |
| 102 | + c.nonNamespacedKind, |
| 103 | + c.CoreType, |
| 104 | + } |
| 105 | + |
| 106 | + dir, err := os.Getwd() |
| 107 | + if err != nil { |
| 108 | + log.Fatal(err) |
| 109 | + } |
| 110 | + fmt.Printf("Edit your controller function...\n") |
| 111 | + doController(dir, args) |
| 112 | + doControllerTest(dir, args) |
| 113 | +} |
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