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create_bootstrappolicy_file.go
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create_bootstrappolicy_file.go
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package admin
import (
"bytes"
"errors"
"io"
"io/ioutil"
"os"
"path"
"github.com/spf13/cobra"
kapi "k8s.io/kubernetes/pkg/api"
kcmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
kprinters "k8s.io/kubernetes/pkg/printers"
"github.com/openshift/origin/pkg/api/latest"
authorizationapi "github.com/openshift/origin/pkg/authorization/apis/authorization"
"github.com/openshift/origin/pkg/cmd/server/bootstrappolicy"
templateapi "github.com/openshift/origin/pkg/template/apis/template"
)
const (
DefaultPolicyFile = "openshift.local.config/master/policy.json"
CreateBootstrapPolicyFileCommand = "create-bootstrap-policy-file"
CreateBootstrapPolicyFileFullCommand = "openshift admin " + CreateBootstrapPolicyFileCommand
)
type CreateBootstrapPolicyFileOptions struct {
File string
OpenShiftSharedResourcesNamespace string
}
func NewCommandCreateBootstrapPolicyFile(commandName string, fullName string, out io.Writer) *cobra.Command {
options := &CreateBootstrapPolicyFileOptions{}
cmd := &cobra.Command{
Use: commandName,
Short: "Create the default bootstrap policy",
Run: func(cmd *cobra.Command, args []string) {
if err := options.Validate(args); err != nil {
kcmdutil.CheckErr(kcmdutil.UsageError(cmd, err.Error()))
}
if err := options.CreateBootstrapPolicyFile(); err != nil {
kcmdutil.CheckErr(err)
}
},
}
flags := cmd.Flags()
flags.StringVar(&options.File, "filename", DefaultPolicyFile, "The policy template file that will be written with roles and bindings.")
flags.StringVar(&options.OpenShiftSharedResourcesNamespace, "openshift-namespace", "openshift", "Namespace for shared resources.")
// autocompletion hints
cmd.MarkFlagFilename("filename")
return cmd
}
func (o CreateBootstrapPolicyFileOptions) Validate(args []string) error {
if len(args) != 0 {
return errors.New("no arguments are supported")
}
if len(o.File) == 0 {
return errors.New("filename must be provided")
}
if len(o.OpenShiftSharedResourcesNamespace) == 0 {
return errors.New("openshift-namespace must be provided")
}
return nil
}
func (o CreateBootstrapPolicyFileOptions) CreateBootstrapPolicyFile() error {
if err := os.MkdirAll(path.Dir(o.File), os.FileMode(0755)); err != nil {
return err
}
policyTemplate := &templateapi.Template{}
clusterRoles := bootstrappolicy.GetBootstrapClusterRoles()
for i := range clusterRoles {
originObject := &authorizationapi.ClusterRole{}
if err := kapi.Scheme.Convert(&clusterRoles[i], originObject, nil); err != nil {
return err
}
versionedObject, err := kapi.Scheme.ConvertToVersion(originObject, latest.Version)
if err != nil {
return err
}
policyTemplate.Objects = append(policyTemplate.Objects, versionedObject)
}
clusterRoleBindings := bootstrappolicy.GetBootstrapClusterRoleBindings()
for i := range clusterRoleBindings {
originObject := &authorizationapi.ClusterRoleBinding{}
if err := kapi.Scheme.Convert(&clusterRoleBindings[i], originObject, nil); err != nil {
return err
}
versionedObject, err := kapi.Scheme.ConvertToVersion(originObject, latest.Version)
if err != nil {
return err
}
policyTemplate.Objects = append(policyTemplate.Objects, versionedObject)
}
openshiftRoles := bootstrappolicy.GetBootstrapOpenshiftRoles(o.OpenShiftSharedResourcesNamespace)
for i := range openshiftRoles {
originObject := &authorizationapi.Role{}
if err := kapi.Scheme.Convert(&openshiftRoles[i], originObject, nil); err != nil {
return err
}
versionedObject, err := kapi.Scheme.ConvertToVersion(originObject, latest.Version)
if err != nil {
return err
}
policyTemplate.Objects = append(policyTemplate.Objects, versionedObject)
}
openshiftRoleBindings := bootstrappolicy.GetBootstrapOpenshiftRoleBindings(o.OpenShiftSharedResourcesNamespace)
for i := range openshiftRoleBindings {
originObject := &authorizationapi.RoleBinding{}
if err := kapi.Scheme.Convert(&openshiftRoleBindings[i], originObject, nil); err != nil {
return err
}
versionedObject, err := kapi.Scheme.ConvertToVersion(originObject, latest.Version)
if err != nil {
return err
}
policyTemplate.Objects = append(policyTemplate.Objects, versionedObject)
}
versionedPolicyTemplate, err := kapi.Scheme.ConvertToVersion(policyTemplate, latest.Version)
if err != nil {
return err
}
buffer := &bytes.Buffer{}
(&kprinters.JSONPrinter{}).PrintObj(versionedPolicyTemplate, buffer)
if err := ioutil.WriteFile(o.File, buffer.Bytes(), 0644); err != nil {
return err
}
return nil
}