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Merge pull request #106159 from soltysh/config_wrapper

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Switch from arguments to an input structure for kubectl command
This commit is contained in:
Kubernetes Prow Robot 2021-11-12 10:24:28 -08:00 committed by GitHub
commit 763916aa2d
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7 changed files with 91 additions and 70 deletions
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3
cmd/clicheck/check_cli_conventions.go
View File

@ -21,6 +21,7 @@ import (
"io/ioutil"
"os"
"k8s.io/cli-runtime/pkg/genericclioptions"
"k8s.io/kubectl/pkg/cmd"
cmdsanity "k8s.io/kubectl/pkg/cmd/util/sanity"
)
@ -28,7 +29,7 @@ import (
func main() {
var errorCount int
kubectl := cmd.NewKubectlCommand(os.Stdin, ioutil.Discard, ioutil.Discard)
kubectl := cmd.NewKubectlCommand(cmd.KubectlOptions{IOStreams: genericclioptions.IOStreams{In: os.Stdin, Out: ioutil.Discard, ErrOut: ioutil.Discard}})
errors := cmdsanity.RunCmdChecks(kubectl, cmdsanity.AllCmdChecks, []string{})
for _, err := range errors {
errorCount++

3
cmd/gendocs/gen_kubectl_docs.go
View File

@ -23,6 +23,7 @@ import (
"os"
"github.com/spf13/cobra/doc"
"k8s.io/cli-runtime/pkg/genericclioptions"
"k8s.io/kubectl/pkg/cmd"
"k8s.io/kubernetes/cmd/genutils"
)
@ -46,6 +47,6 @@ func main() {
// Set environment variables used by kubectl so the output is consistent,
// regardless of where we run.
os.Setenv("HOME", "/home/username")
kubectl := cmd.NewKubectlCommand(bytes.NewReader(nil), ioutil.Discard, ioutil.Discard)
kubectl := cmd.NewKubectlCommand(cmd.KubectlOptions{IOStreams: genericclioptions.IOStreams{In: bytes.NewReader(nil), Out: ioutil.Discard, ErrOut: ioutil.Discard}})
doc.GenMarkdownTree(kubectl, outDir)
}

3
cmd/genman/gen_kube_man.go
View File

@ -26,6 +26,7 @@ import (
mangen "github.com/cpuguy83/go-md2man/v2/md2man"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"k8s.io/cli-runtime/pkg/genericclioptions"
kubectlcmd "k8s.io/kubectl/pkg/cmd"
"k8s.io/kubernetes/cmd/genutils"
apiservapp "k8s.io/kubernetes/cmd/kube-apiserver/app"
@ -96,7 +97,7 @@ func main() {
}
case "kubectl":
// generate manpage for kubectl
kubectl := kubectlcmd.NewKubectlCommand(bytes.NewReader(nil), ioutil.Discard, ioutil.Discard)
kubectl := kubectlcmd.NewKubectlCommand(kubectlcmd.KubectlOptions{IOStreams: genericclioptions.IOStreams{In: bytes.NewReader(nil), Out: ioutil.Discard, ErrOut: ioutil.Discard}})
genMarkdown(kubectl, "", outDir)
for _, c := range kubectl.Commands() {
genMarkdown(c, "kubectl", outDir)

3
cmd/genyaml/gen_kubectl_yaml.go
View File

@ -26,6 +26,7 @@ import (
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"gopkg.in/yaml.v2"
"k8s.io/cli-runtime/pkg/genericclioptions"
"k8s.io/kubectl/pkg/cmd"
"k8s.io/kubernetes/cmd/genutils"
)
@ -65,7 +66,7 @@ func main() {
// Set environment variables used by kubectl so the output is consistent,
// regardless of where we run.
os.Setenv("HOME", "/home/username")
kubectl := cmd.NewKubectlCommand(bytes.NewReader(nil), ioutil.Discard, ioutil.Discard)
kubectl := cmd.NewKubectlCommand(cmd.KubectlOptions{IOStreams: genericclioptions.IOStreams{In: bytes.NewReader(nil), Out: ioutil.Discard, ErrOut: ioutil.Discard}})
genYaml(kubectl, "", outDir)
for _, c := range kubectl.Commands() {
genYaml(c, "kubectl", outDir)

6
staging/src/k8s.io/cli-runtime/pkg/genericclioptions/config_flags.go
View File

@ -396,6 +396,12 @@ func (f *ConfigFlags) WithDiscoveryBurst(discoveryBurst int) *ConfigFlags {
return f
}
// WithWrapConfigFn allows providing a wrapper function for the client Config.
func (f *ConfigFlags) WithWrapConfigFn(wrapConfigFn func(*rest.Config) *rest.Config) *ConfigFlags {
f.WrapConfigFn = wrapConfigFn
return f
}
// NewConfigFlags returns ConfigFlags with default values set
func NewConfigFlags(usePersistentConfig bool) *ConfigFlags {
impersonateGroup := []string{}

131
staging/src/k8s.io/kubectl/pkg/cmd/cmd.go
View File

@ -18,7 +18,6 @@ package cmd
import (
"fmt"
"io"
"net/http"
"os"
"os/exec"
@ -82,21 +81,34 @@ import (
const kubectlCmdHeaders = "KUBECTL_COMMAND_HEADERS"
type KubectlOptions struct {
PluginHandler PluginHandler
Arguments []string
ConfigFlags *genericclioptions.ConfigFlags
genericclioptions.IOStreams
}
// NewDefaultKubectlCommand creates the `kubectl` command with default arguments
func NewDefaultKubectlCommand() *cobra.Command {
return NewDefaultKubectlCommandWithArgs(NewDefaultPluginHandler(plugin.ValidPluginFilenamePrefixes), os.Args, os.Stdin, os.Stdout, os.Stderr)
return NewDefaultKubectlCommandWithArgs(KubectlOptions{
PluginHandler: NewDefaultPluginHandler(plugin.ValidPluginFilenamePrefixes),
Arguments: os.Args,
ConfigFlags: genericclioptions.NewConfigFlags(true).WithDeprecatedPasswordFlag(),
IOStreams: genericclioptions.IOStreams{In: os.Stdin, Out: os.Stdout, ErrOut: os.Stderr},
})
}
// NewDefaultKubectlCommandWithArgs creates the `kubectl` command with arguments
func NewDefaultKubectlCommandWithArgs(pluginHandler PluginHandler, args []string, in io.Reader, out, errout io.Writer) *cobra.Command {
cmd := NewKubectlCommand(in, out, errout)
func NewDefaultKubectlCommandWithArgs(o KubectlOptions) *cobra.Command {
cmd := NewKubectlCommand(o)
if pluginHandler == nil {
if o.PluginHandler == nil {
return cmd
}
if len(args) > 1 {
cmdPathPieces := args[1:]
if len(o.Arguments) > 1 {
cmdPathPieces := o.Arguments[1:]
// only look for suitable extension executables if
// the specified command does not already exist
@ -116,8 +128,8 @@ func NewDefaultKubectlCommandWithArgs(pluginHandler PluginHandler, args []string
case "help", cobra.ShellCompRequestCmd, cobra.ShellCompNoDescRequestCmd:
// Don't search for a plugin
default:
if err := HandlePluginCommand(pluginHandler, cmdPathPieces); err != nil {
fmt.Fprintf(errout, "Error: %v\n", err)
if err := HandlePluginCommand(o.PluginHandler, cmdPathPieces); err != nil {
fmt.Fprintf(o.IOStreams.ErrOut, "Error: %v\n", err)
os.Exit(1)
}
}
@ -233,8 +245,8 @@ func HandlePluginCommand(pluginHandler PluginHandler, cmdArgs []string) error {
}
// NewKubectlCommand creates the `kubectl` command and its nested children.
func NewKubectlCommand(in io.Reader, out, err io.Writer) *cobra.Command {
warningHandler := rest.NewWarningWriter(err, rest.WarningWriterOptions{Deduplicate: true, Color: term.AllowsColorOutput(err)})
func NewKubectlCommand(o KubectlOptions) *cobra.Command {
warningHandler := rest.NewWarningWriter(o.IOStreams.ErrOut, rest.WarningWriterOptions{Deduplicate: true, Color: term.AllowsColorOutput(o.IOStreams.ErrOut)})
warningsAsErrors := false
// Parent command to which all subcommands are added.
cmds := &cobra.Command{
@ -280,7 +292,10 @@ func NewKubectlCommand(in io.Reader, out, err io.Writer) *cobra.Command {
flags.BoolVar(&warningsAsErrors, "warnings-as-errors", warningsAsErrors, "Treat warnings received from the server as errors and exit with a non-zero exit code")
kubeConfigFlags := genericclioptions.NewConfigFlags(true).WithDeprecatedPasswordFlag()
kubeConfigFlags := o.ConfigFlags
if kubeConfigFlags == nil {
kubeConfigFlags = genericclioptions.NewConfigFlags(true).WithDeprecatedPasswordFlag()
}
kubeConfigFlags.AddFlags(flags)
matchVersionKubeConfigFlags := cmdutil.NewMatchVersionFlags(kubeConfigFlags)
matchVersionKubeConfigFlags.AddFlags(flags)
@ -296,11 +311,9 @@ func NewKubectlCommand(in io.Reader, out, err io.Writer) *cobra.Command {
// the language, instead of just loading from the LANG env. variable.
i18n.LoadTranslations("kubectl", nil)
ioStreams := genericclioptions.IOStreams{In: in, Out: out, ErrOut: err}
// Proxy command is incompatible with CommandHeaderRoundTripper, so
// clear the WrapConfigFn before running proxy command.
proxyCmd := proxy.NewCmdProxy(f, ioStreams)
proxyCmd := proxy.NewCmdProxy(f, o.IOStreams)
proxyCmd.PreRun = func(cmd *cobra.Command, args []string) {
kubeConfigFlags.WrapConfigFn = nil
}
@ -308,72 +321,72 @@ func NewKubectlCommand(in io.Reader, out, err io.Writer) *cobra.Command {
{
Message: "Basic Commands (Beginner):",
Commands: []*cobra.Command{
create.NewCmdCreate(f, ioStreams),
expose.NewCmdExposeService(f, ioStreams),
run.NewCmdRun(f, ioStreams),
set.NewCmdSet(f, ioStreams),
create.NewCmdCreate(f, o.IOStreams),
expose.NewCmdExposeService(f, o.IOStreams),
run.NewCmdRun(f, o.IOStreams),
set.NewCmdSet(f, o.IOStreams),
},
},
{
Message: "Basic Commands (Intermediate):",
Commands: []*cobra.Command{
explain.NewCmdExplain("kubectl", f, ioStreams),
get.NewCmdGet("kubectl", f, ioStreams),
edit.NewCmdEdit(f, ioStreams),
delete.NewCmdDelete(f, ioStreams),
explain.NewCmdExplain("kubectl", f, o.IOStreams),
get.NewCmdGet("kubectl", f, o.IOStreams),
edit.NewCmdEdit(f, o.IOStreams),
delete.NewCmdDelete(f, o.IOStreams),
},
},
{
Message: "Deploy Commands:",
Commands: []*cobra.Command{
rollout.NewCmdRollout(f, ioStreams),
scale.NewCmdScale(f, ioStreams),
autoscale.NewCmdAutoscale(f, ioStreams),
rollout.NewCmdRollout(f, o.IOStreams),
scale.NewCmdScale(f, o.IOStreams),
autoscale.NewCmdAutoscale(f, o.IOStreams),
},
},
{
Message: "Cluster Management Commands:",
Commands: []*cobra.Command{
certificates.NewCmdCertificate(f, ioStreams),
clusterinfo.NewCmdClusterInfo(f, ioStreams),
top.NewCmdTop(f, ioStreams),
drain.NewCmdCordon(f, ioStreams),
drain.NewCmdUncordon(f, ioStreams),
drain.NewCmdDrain(f, ioStreams),
taint.NewCmdTaint(f, ioStreams),
certificates.NewCmdCertificate(f, o.IOStreams),
clusterinfo.NewCmdClusterInfo(f, o.IOStreams),
top.NewCmdTop(f, o.IOStreams),
drain.NewCmdCordon(f, o.IOStreams),
drain.NewCmdUncordon(f, o.IOStreams),
drain.NewCmdDrain(f, o.IOStreams),
taint.NewCmdTaint(f, o.IOStreams),
},
},
{
Message: "Troubleshooting and Debugging Commands:",
Commands: []*cobra.Command{
describe.NewCmdDescribe("kubectl", f, ioStreams),
logs.NewCmdLogs(f, ioStreams),
attach.NewCmdAttach(f, ioStreams),
cmdexec.NewCmdExec(f, ioStreams),
portforward.NewCmdPortForward(f, ioStreams),
describe.NewCmdDescribe("kubectl", f, o.IOStreams),
logs.NewCmdLogs(f, o.IOStreams),
attach.NewCmdAttach(f, o.IOStreams),
cmdexec.NewCmdExec(f, o.IOStreams),
portforward.NewCmdPortForward(f, o.IOStreams),
proxyCmd,
cp.NewCmdCp(f, ioStreams),
auth.NewCmdAuth(f, ioStreams),
debug.NewCmdDebug(f, ioStreams),
cp.NewCmdCp(f, o.IOStreams),
auth.NewCmdAuth(f, o.IOStreams),
debug.NewCmdDebug(f, o.IOStreams),
},
},
{
Message: "Advanced Commands:",
Commands: []*cobra.Command{
diff.NewCmdDiff(f, ioStreams),
apply.NewCmdApply("kubectl", f, ioStreams),
patch.NewCmdPatch(f, ioStreams),
replace.NewCmdReplace(f, ioStreams),
wait.NewCmdWait(f, ioStreams),
kustomize.NewCmdKustomize(ioStreams),
diff.NewCmdDiff(f, o.IOStreams),
apply.NewCmdApply("kubectl", f, o.IOStreams),
patch.NewCmdPatch(f, o.IOStreams),
replace.NewCmdReplace(f, o.IOStreams),
wait.NewCmdWait(f, o.IOStreams),
kustomize.NewCmdKustomize(o.IOStreams),
},
},
{
Message: "Settings Commands:",
Commands: []*cobra.Command{
label.NewCmdLabel(f, ioStreams),
annotate.NewCmdAnnotate("kubectl", f, ioStreams),
completion.NewCmdCompletion(ioStreams.Out, ""),
label.NewCmdLabel(f, o.IOStreams),
annotate.NewCmdAnnotate("kubectl", f, o.IOStreams),
completion.NewCmdCompletion(o.IOStreams.Out, ""),
},
},
}
@ -382,7 +395,7 @@ func NewKubectlCommand(in io.Reader, out, err io.Writer) *cobra.Command {
filters := []string{"options"}
// Hide the "alpha" subcommand if there are no alpha commands in this build.
alpha := NewCmdAlpha(f, ioStreams)
alpha := NewCmdAlpha(f, o.IOStreams)
if !alpha.HasSubCommands() {
filters = append(filters, alpha.Name())
}
@ -393,12 +406,12 @@ func NewKubectlCommand(in io.Reader, out, err io.Writer) *cobra.Command {
registerCompletionFuncForGlobalFlags(cmds, f)
cmds.AddCommand(alpha)
cmds.AddCommand(cmdconfig.NewCmdConfig(clientcmd.NewDefaultPathOptions(), ioStreams))
cmds.AddCommand(plugin.NewCmdPlugin(ioStreams))
cmds.AddCommand(version.NewCmdVersion(f, ioStreams))
cmds.AddCommand(apiresources.NewCmdAPIVersions(f, ioStreams))
cmds.AddCommand(apiresources.NewCmdAPIResources(f, ioStreams))
cmds.AddCommand(options.NewCmdOptions(ioStreams.Out))
cmds.AddCommand(cmdconfig.NewCmdConfig(clientcmd.NewDefaultPathOptions(), o.IOStreams))
cmds.AddCommand(plugin.NewCmdPlugin(o.IOStreams))
cmds.AddCommand(version.NewCmdVersion(f, o.IOStreams))
cmds.AddCommand(apiresources.NewCmdAPIVersions(f, o.IOStreams))
cmds.AddCommand(apiresources.NewCmdAPIResources(f, o.IOStreams))
cmds.AddCommand(options.NewCmdOptions(o.IOStreams.Out))
// Stop warning about normalization of flags. That makes it possible to
// add the klog flags later.
@ -433,8 +446,12 @@ func addCmdHeaderHooks(cmds *cobra.Command, kubeConfigFlags *genericclioptions.C
crt.ParseCommandHeaders(cmd, args)
return existingPreRunE(cmd, args)
}
wrapConfigFn := kubeConfigFlags.WrapConfigFn
// Wraps CommandHeaderRoundTripper around standard RoundTripper.
kubeConfigFlags.WrapConfigFn = func(c *rest.Config) *rest.Config {
if wrapConfigFn != nil {
c = wrapConfigFn(c)
}
c.Wrap(func(rt http.RoundTripper) http.RoundTripper {
// Must be separate RoundTripper; not "crt" closure.
// Fixes: https://github.com/kubernetes/kubectl/issues/1098

12
staging/src/k8s.io/kubectl/pkg/cmd/cmd_test.go
View File

@ -25,12 +25,11 @@ import (
"github.com/spf13/cobra"
"k8s.io/cli-runtime/pkg/genericclioptions"
cmdutil "k8s.io/kubectl/pkg/cmd/util"
)
func TestNormalizationFuncGlobalExistence(t *testing.T) {
// This test can be safely deleted when we will not support multiple flag formats
root := NewKubectlCommand(os.Stdin, os.Stdout, os.Stderr)
root := NewKubectlCommand(KubectlOptions{IOStreams: genericclioptions.IOStreams{In: os.Stdin, Out: os.Stdout, ErrOut: os.Stderr}})
if root.Parent() != nil {
t.Fatal("We expect the root command to be returned")
@ -129,14 +128,9 @@ func TestKubectlCommandHandlesPlugins(t *testing.T) {
pluginsHandler := &testPluginHandler{
pluginsDirectory: "plugin/testdata",
}
_, in, out, errOut := genericclioptions.NewTestIOStreams()
ioStreams, _, _, _ := genericclioptions.NewTestIOStreams()
cmdutil.BehaviorOnFatal(func(str string, code int) {
errOut.Write([]byte(str))
})
root := NewDefaultKubectlCommandWithArgs(pluginsHandler, test.args, in, out, errOut)
root.SetOut(out)
root := NewDefaultKubectlCommandWithArgs(KubectlOptions{PluginHandler: pluginsHandler, Arguments: test.args, IOStreams: ioStreams})
if err := root.Execute(); err != nil {
t.Fatalf("unexpected error: %v", err)
}