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overwrite_bootstrappolicy.go
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overwrite_bootstrappolicy.go
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package admin
import (
"errors"
"fmt"
"io"
"github.com/golang/glog"
"github.com/spf13/cobra"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/meta"
"github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl"
"github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl/resource"
utilerrors "github.com/GoogleCloudPlatform/kubernetes/pkg/util/errors"
"github.com/GoogleCloudPlatform/kubernetes/pkg/tools"
"github.com/openshift/origin/pkg/api/latest"
authorizationapi "github.com/openshift/origin/pkg/authorization/api"
authorizationetcd "github.com/openshift/origin/pkg/authorization/registry/etcd"
roleregistry "github.com/openshift/origin/pkg/authorization/registry/role"
rolebindingregistry "github.com/openshift/origin/pkg/authorization/registry/rolebinding"
"github.com/openshift/origin/pkg/cmd/cli/describe"
configapilatest "github.com/openshift/origin/pkg/cmd/server/api/latest"
configvalidation "github.com/openshift/origin/pkg/cmd/server/api/validation"
"github.com/openshift/origin/pkg/cmd/server/etcd"
cmdclientcmd "github.com/openshift/origin/pkg/cmd/util/clientcmd"
templateapi "github.com/openshift/origin/pkg/template/api"
)
const OverwriteBootstrapPolicyCommandName = "overwrite-policy"
type OverwriteBootstrapPolicyOptions struct {
File string
MasterConfigFile string
Force bool
Out io.Writer
CreateBootstrapPolicyCommand string
}
func NewCommandOverwriteBootstrapPolicy(commandName string, fullName string, createBootstrapPolicyCommand string, out io.Writer) *cobra.Command {
options := &OverwriteBootstrapPolicyOptions{Out: out}
options.CreateBootstrapPolicyCommand = createBootstrapPolicyCommand
cmd := &cobra.Command{
Use: commandName,
Short: "Reset the policy to the default values",
Run: func(c *cobra.Command, args []string) {
if err := options.Validate(args); err != nil {
fmt.Fprintln(c.Out(), err.Error())
c.Help()
return
}
if err := options.OverwriteBootstrapPolicy(); err != nil {
glog.Fatal(err)
}
},
}
cmd.SetOutput(out)
flags := cmd.Flags()
flags.BoolVarP(&options.Force, "force", "f", false, "You must confirm you really want to reset your policy. This will delete any custom settings you may have.")
flags.StringVar(&options.File, "filename", "", "The policy template file containing roles and bindings. One can be created with '"+createBootstrapPolicyCommand+"'.")
flags.StringVar(&options.MasterConfigFile, "master-config", "master.yaml", "Location of the master configuration file to run from in order to connect to etcd and directly modify the policy.")
return cmd
}
func (o OverwriteBootstrapPolicyOptions) 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.MasterConfigFile) == 0 {
return errors.New("master-config must be provided")
}
return nil
}
func (o OverwriteBootstrapPolicyOptions) OverwriteBootstrapPolicy() error {
masterConfig, err := configapilatest.ReadAndResolveMasterConfig(o.MasterConfigFile)
if err != nil {
return err
}
if err := configvalidation.ValidateNamespace(masterConfig.PolicyConfig.MasterAuthorizationNamespace, "masterAuthorizationNamespace"); len(err) > 0 {
return utilerrors.NewAggregate(err)
}
etcdHelper, err := etcd.NewOpenShiftEtcdHelper(masterConfig.EtcdClientInfo)
if err != nil {
return err
}
return OverwriteBootstrapPolicy(etcdHelper, masterConfig.PolicyConfig.MasterAuthorizationNamespace, o.File, o.CreateBootstrapPolicyCommand, o.Force, o.Out)
}
func OverwriteBootstrapPolicy(etcdHelper tools.EtcdHelper, masterNamespace, policyFile, createBootstrapPolicyCommand string, change bool, out io.Writer) error {
if !change {
fmt.Fprintf(out, "Performing a dry run of policy overwrite:\n\n")
}
mapper := cmdclientcmd.ShortcutExpander{kubectl.ShortcutExpander{latest.RESTMapper}}
typer := api.Scheme
clientMapper := resource.ClientMapperFunc(func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
return nil, nil
})
r := resource.NewBuilder(mapper, typer, clientMapper).
FilenameParam(policyFile).
Flatten().
Do()
if r.Err() != nil {
return r.Err()
}
registry := authorizationetcd.New(etcdHelper)
roleRegistry := roleregistry.NewVirtualRegistry(registry)
roleBindingRegistry := rolebindingregistry.NewVirtualRegistry(registry, registry, masterNamespace)
return r.Visit(func(info *resource.Info) error {
template, ok := info.Object.(*templateapi.Template)
if !ok {
return errors.New("policy must be contained in a template. One can be created with '" + createBootstrapPolicyCommand + "'.")
}
for _, item := range template.Objects {
switch t := item.(type) {
case *authorizationapi.Role:
ctx := api.WithNamespace(api.NewContext(), t.Namespace)
if change {
roleRegistry.DeleteRole(ctx, t.Name)
if err := roleRegistry.CreateRole(ctx, t); err != nil {
return err
}
} else {
fmt.Fprintf(out, "Overwrite role %s/%s\n", t.Namespace, t.Name)
if s, err := describe.DescribeRole(t); err == nil {
fmt.Fprintf(out, "%s\n", s)
}
}
case *authorizationapi.RoleBinding:
ctx := api.WithNamespace(api.NewContext(), t.Namespace)
if change {
roleBindingRegistry.DeleteRoleBinding(ctx, t.Name)
if err := roleBindingRegistry.CreateRoleBinding(ctx, t, true); err != nil {
return err
}
} else {
fmt.Fprintf(out, "Overwrite role binding %s/%s\n", t.Namespace, t.Name)
if s, err := describe.DescribeRoleBinding(t, nil, nil); err == nil {
fmt.Fprintf(out, "%s\n", s)
}
}
default:
return errors.New("only roles and rolebindings may be created in this mode")
}
}
if !change {
fmt.Fprintf(out, "To make the changes described above, pass --force\n")
}
return nil
})
}