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https://github.com/k3s-io/kubernetes.git
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Merge pull request #55152 from fabriziopandini/kubeadm-doc-preflight
Automatic merge from submit-queue (batch tested with PRs 55868, 55393, 55152, 55849). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Improve documentation for kubeadm preflight command **What this PR does / why we need it**: This PR is part of the effort for improving kubeadm reference doc (CLI, website, manpages), and more specifically improves documentation for `kubeadm alpha phase preflight` **Which issue(s) this PR fixes**: part of the effort for [#265](https://github.com/kubernetes/kubeadm/issues/265) **Special notes for your reviewer**: The PR has two commits: - `Clone documentation utility from //pkg/kubectl/cmd/templates`, that re-implements in kubeadm some kubectl utilities for handling description and examples for cobra.commands; more PR will follow re-using those utilities. NB. I was forced to add an exception to golint because `blackfriday.Renderer` requires to implement an interface that is not compliant - `kubeadm-doc-preflight` that implements improvement to `kubeadm alpha phase preflight` **Release note**: ```release-note NONE ```
This commit is contained in:
commit
c5e543308b
@ -40,7 +40,7 @@ func NewKubeadmCommand(_ io.Reader, out, err io.Writer) *cobra.Command {
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kubeadm: easily bootstrap a secure Kubernetes cluster.
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┌──────────────────────────────────────────────────────────┐
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│ KUBEADM IS BETA, DO NOT USE IT FOR PRODUCTION CLUSTERS! │
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│ KUBEADM IS CURRENTLY IN BETA │
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│ │
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│ But please, try it out and give us feedback at: │
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│ https://github.com/kubernetes/kubeadm/issues │
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|
@ -218,7 +218,7 @@ func AddInitOtherFlags(flagSet *flag.FlagSet, cfgPath *string, skipPreFlight, sk
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// NewInit validates given arguments and instantiates Init struct with provided information.
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func NewInit(cfgPath string, cfg *kubeadmapi.MasterConfiguration, skipPreFlight, skipTokenPrint, dryRun bool, criSocket string) (*Init, error) {
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fmt.Println("[kubeadm] WARNING: kubeadm is in beta. Please do not use it for production clusters!")
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fmt.Println("[kubeadm] WARNING: kubeadm is currently in beta")
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if cfgPath != "" {
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b, err := ioutil.ReadFile(cfgPath)
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|
@ -176,7 +176,7 @@ type Join struct {
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// NewJoin instantiates Join struct with given arguments
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func NewJoin(cfgPath string, args []string, cfg *kubeadmapi.NodeConfiguration, skipPreFlight bool, criSocket string) (*Join, error) {
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fmt.Println("[kubeadm] WARNING: kubeadm is in beta. Please do not use it for production clusters!")
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fmt.Println("[kubeadm] WARNING: kubeadm is currently in beta")
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if cfg.NodeName == "" {
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cfg.NodeName = nodeutil.GetHostname("")
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|
@ -47,6 +47,7 @@ go_library(
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"//cmd/kubeadm/app/util/config:go_default_library",
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"//cmd/kubeadm/app/util/kubeconfig:go_default_library",
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"//pkg/api/legacyscheme:go_default_library",
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"//pkg/util/normalizer:go_default_library",
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"//vendor/github.com/spf13/cobra:go_default_library",
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"//vendor/k8s.io/client-go/kubernetes:go_default_library",
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"//vendor/k8s.io/utils/exec:go_default_library",
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|
@ -22,15 +22,37 @@ import (
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kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
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cmdutil "k8s.io/kubernetes/cmd/kubeadm/app/cmd/util"
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"k8s.io/kubernetes/cmd/kubeadm/app/preflight"
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kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
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"k8s.io/kubernetes/pkg/util/normalizer"
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utilsexec "k8s.io/utils/exec"
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)
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var (
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masterPreflightLongDesc = normalizer.LongDesc(`
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Run master pre-flight checks, functionally equivalent to what implemented by kubeadm init.
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` + cmdutil.AlphaDisclaimer)
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masterPreflightExample = normalizer.Examples(`
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# Run master pre-flight checks.
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kubeadm alpha phase preflight master
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`)
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nodePreflightLongDesc = normalizer.LongDesc(`
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Run node pre-flight checks, functionally equivalent to what implemented by kubeadm join.
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` + cmdutil.AlphaDisclaimer)
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nodePreflightExample = normalizer.Examples(`
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# Run node pre-flight checks.
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kubeadm alpha phase preflight node
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`)
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)
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// NewCmdPreFlight calls cobra.Command for preflight checks
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func NewCmdPreFlight() *cobra.Command {
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cmd := &cobra.Command{
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Use: "preflight",
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Short: "Run pre-flight checks",
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RunE: cmdutil.SubCmdRunE("preflight"),
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Long: cmdutil.MacroCommandLongDescription,
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}
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cmd.AddCommand(NewCmdPreFlightMaster())
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@ -41,12 +63,15 @@ func NewCmdPreFlight() *cobra.Command {
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// NewCmdPreFlightMaster calls cobra.Command for master preflight checks
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func NewCmdPreFlightMaster() *cobra.Command {
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cmd := &cobra.Command{
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Use: "master",
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Short: "Run master pre-flight checks.",
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RunE: func(cmd *cobra.Command, args []string) error {
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Use: "master",
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Short: "Run master pre-flight checks",
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Long: masterPreflightLongDesc,
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Example: masterPreflightExample,
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Run: func(cmd *cobra.Command, args []string) {
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cfg := &kubeadmapi.MasterConfiguration{}
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criSocket := ""
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return preflight.RunInitMasterChecks(utilsexec.New(), cfg, criSocket)
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err := preflight.RunInitMasterChecks(utilsexec.New(), cfg, criSocket)
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kubeadmutil.CheckErr(err)
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},
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}
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@ -56,12 +81,15 @@ func NewCmdPreFlightMaster() *cobra.Command {
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// NewCmdPreFlightNode calls cobra.Command for node preflight checks
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func NewCmdPreFlightNode() *cobra.Command {
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cmd := &cobra.Command{
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Use: "node",
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Short: "Run node pre-flight checks.",
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RunE: func(cmd *cobra.Command, args []string) error {
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Use: "node",
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Short: "Run node pre-flight checks",
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Long: nodePreflightLongDesc,
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Example: nodePreflightExample,
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Run: func(cmd *cobra.Command, args []string) {
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cfg := &kubeadmapi.NodeConfiguration{}
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criSocket := ""
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return preflight.RunJoinNodeChecks(utilsexec.New(), cfg, criSocket)
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err := preflight.RunJoinNodeChecks(utilsexec.New(), cfg, criSocket)
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kubeadmutil.CheckErr(err)
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},
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}
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|
@ -2,10 +2,16 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
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go_library(
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name = "go_default_library",
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srcs = ["cmdutil.go"],
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srcs = [
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"cmdutil.go",
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"documentation.go",
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],
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importpath = "k8s.io/kubernetes/cmd/kubeadm/app/cmd/util",
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visibility = ["//visibility:public"],
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deps = ["//vendor/github.com/spf13/cobra:go_default_library"],
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deps = [
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"//pkg/util/normalizer:go_default_library",
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"//vendor/github.com/spf13/cobra:go_default_library",
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||||
],
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||||
)
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||||
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go_test(
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|
@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
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package phases
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package util
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||||
import (
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"fmt"
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||||
|
@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
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||||
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package phases
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package util
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||||
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||||
import (
|
||||
"testing"
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|
33
cmd/kubeadm/app/cmd/util/documentation.go
Normal file
33
cmd/kubeadm/app/cmd/util/documentation.go
Normal file
@ -0,0 +1,33 @@
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/*
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||||
Copyright 2017 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package util
|
||||
|
||||
import (
|
||||
"k8s.io/kubernetes/pkg/util/normalizer"
|
||||
)
|
||||
|
||||
var (
|
||||
// AlphaDisclaimer to be places at the end of description of commands in alpha release
|
||||
AlphaDisclaimer = `
|
||||
Alpha Disclaimer: this command is currently alpha but, please try it out and give us feedback!
|
||||
`
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||||
|
||||
// MacroCommandLongDescription provide a standard description for "macro" commands
|
||||
MacroCommandLongDescription = normalizer.LongDesc(`
|
||||
This command is not meant to be run on its own. See list of available subcommands.
|
||||
`)
|
||||
)
|
@ -28,6 +28,7 @@ import (
|
||||
// Run creates and executes new kubeadm command
|
||||
func Run() error {
|
||||
// We do not want these flags to show up in --help
|
||||
pflag.CommandLine.MarkHidden("version")
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||||
pflag.CommandLine.MarkHidden("google-json-key")
|
||||
pflag.CommandLine.MarkHidden("log-flush-frequency")
|
||||
|
||||
|
@ -354,6 +354,7 @@ pkg/util/labels
|
||||
pkg/util/mount
|
||||
pkg/util/netsh/testing
|
||||
pkg/util/node
|
||||
pkg/util/normalizer
|
||||
pkg/util/oom
|
||||
pkg/util/parsers
|
||||
pkg/util/procfs
|
||||
|
@ -38,6 +38,7 @@ filegroup(
|
||||
"//pkg/util/net:all-srcs",
|
||||
"//pkg/util/netsh:all-srcs",
|
||||
"//pkg/util/node:all-srcs",
|
||||
"//pkg/util/normalizer:all-srcs",
|
||||
"//pkg/util/nsenter:all-srcs",
|
||||
"//pkg/util/oom:all-srcs",
|
||||
"//pkg/util/parsers:all-srcs",
|
||||
|
29
pkg/util/normalizer/BUILD
Normal file
29
pkg/util/normalizer/BUILD
Normal file
@ -0,0 +1,29 @@
|
||||
load("@io_bazel_rules_go//go:def.bzl", "go_library")
|
||||
|
||||
go_library(
|
||||
name = "go_default_library",
|
||||
srcs = [
|
||||
"markdown.go",
|
||||
"normalizer.go",
|
||||
],
|
||||
importpath = "k8s.io/kubernetes/pkg/util/normalizer",
|
||||
visibility = ["//visibility:public"],
|
||||
deps = [
|
||||
"//vendor/github.com/MakeNowJust/heredoc:go_default_library",
|
||||
"//vendor/github.com/russross/blackfriday:go_default_library",
|
||||
],
|
||||
)
|
||||
|
||||
filegroup(
|
||||
name = "package-srcs",
|
||||
srcs = glob(["**"]),
|
||||
tags = ["automanaged"],
|
||||
visibility = ["//visibility:private"],
|
||||
)
|
||||
|
||||
filegroup(
|
||||
name = "all-srcs",
|
||||
srcs = [":package-srcs"],
|
||||
tags = ["automanaged"],
|
||||
visibility = ["//visibility:public"],
|
||||
)
|
151
pkg/util/normalizer/markdown.go
Normal file
151
pkg/util/normalizer/markdown.go
Normal file
@ -0,0 +1,151 @@
|
||||
/*
|
||||
Copyright 2016 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
/*
|
||||
This file is copied from /pkg/kubectl/cmd/templates/markdown.go
|
||||
In a future PR we should remove the original copy and use
|
||||
/pkg/util/normalizer everywhere.
|
||||
*/
|
||||
|
||||
package normalizer
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"github.com/russross/blackfriday"
|
||||
)
|
||||
|
||||
const linebreak = "\n"
|
||||
|
||||
// ASCIIRenderer implements blackfriday.Renderer
|
||||
var _ blackfriday.Renderer = &ASCIIRenderer{}
|
||||
|
||||
// ASCIIRenderer is a blackfriday.Renderer intended for rendering markdown
|
||||
// documents as plain text, well suited for human reading on terminals.
|
||||
type ASCIIRenderer struct {
|
||||
Indentation string
|
||||
|
||||
listItemCount uint
|
||||
listLevel uint
|
||||
}
|
||||
|
||||
// NormalText gets a text chunk *after* the markdown syntax was already
|
||||
// processed and does a final cleanup on things we don't expect here, like
|
||||
// removing linebreaks on things that are not a paragraph break (auto unwrap).
|
||||
func (r *ASCIIRenderer) NormalText(out *bytes.Buffer, text []byte) {
|
||||
raw := string(text)
|
||||
lines := strings.Split(raw, linebreak)
|
||||
for _, line := range lines {
|
||||
trimmed := strings.Trim(line, " \n\t")
|
||||
out.WriteString(trimmed)
|
||||
out.WriteString(" ")
|
||||
}
|
||||
}
|
||||
|
||||
// List renders the start and end of a list.
|
||||
func (r *ASCIIRenderer) List(out *bytes.Buffer, text func() bool, flags int) {
|
||||
r.listLevel++
|
||||
out.WriteString(linebreak)
|
||||
text()
|
||||
r.listLevel--
|
||||
}
|
||||
|
||||
// ListItem renders list items and supports both ordered and unordered lists.
|
||||
func (r *ASCIIRenderer) ListItem(out *bytes.Buffer, text []byte, flags int) {
|
||||
if flags&blackfriday.LIST_ITEM_BEGINNING_OF_LIST != 0 {
|
||||
r.listItemCount = 1
|
||||
} else {
|
||||
r.listItemCount++
|
||||
}
|
||||
indent := strings.Repeat(r.Indentation, int(r.listLevel))
|
||||
var bullet string
|
||||
if flags&blackfriday.LIST_TYPE_ORDERED != 0 {
|
||||
bullet += fmt.Sprintf("%d.", r.listItemCount)
|
||||
} else {
|
||||
bullet += "*"
|
||||
}
|
||||
out.WriteString(indent + bullet + " ")
|
||||
r.fw(out, text)
|
||||
out.WriteString(linebreak)
|
||||
}
|
||||
|
||||
// Paragraph renders the start and end of a paragraph.
|
||||
func (r *ASCIIRenderer) Paragraph(out *bytes.Buffer, text func() bool) {
|
||||
out.WriteString(linebreak)
|
||||
text()
|
||||
out.WriteString(linebreak)
|
||||
}
|
||||
|
||||
// BlockCode renders a chunk of text that represents source code.
|
||||
func (r *ASCIIRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string) {
|
||||
out.WriteString(linebreak)
|
||||
lines := []string{}
|
||||
for _, line := range strings.Split(string(text), linebreak) {
|
||||
indented := r.Indentation + line
|
||||
lines = append(lines, indented)
|
||||
}
|
||||
out.WriteString(strings.Join(lines, linebreak))
|
||||
}
|
||||
|
||||
func (r *ASCIIRenderer) GetFlags() int { return 0 }
|
||||
func (r *ASCIIRenderer) HRule(out *bytes.Buffer) {
|
||||
out.WriteString(linebreak + "----------" + linebreak)
|
||||
}
|
||||
func (r *ASCIIRenderer) LineBreak(out *bytes.Buffer) { out.WriteString(linebreak) }
|
||||
func (r *ASCIIRenderer) TitleBlock(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) Header(out *bytes.Buffer, text func() bool, level int, id string) { text() }
|
||||
func (r *ASCIIRenderer) BlockHtml(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) BlockQuote(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) TableRow(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) TableHeaderCell(out *bytes.Buffer, text []byte, align int) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) TableCell(out *bytes.Buffer, text []byte, align int) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) Footnotes(out *bytes.Buffer, text func() bool) { text() }
|
||||
func (r *ASCIIRenderer) FootnoteItem(out *bytes.Buffer, name, text []byte, flags int) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) AutoLink(out *bytes.Buffer, link []byte, kind int) { r.fw(out, link) }
|
||||
func (r *ASCIIRenderer) CodeSpan(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) DoubleEmphasis(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) Emphasis(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) RawHtmlTag(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) TripleEmphasis(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) StrikeThrough(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) FootnoteRef(out *bytes.Buffer, ref []byte, id int) { r.fw(out, ref) }
|
||||
func (r *ASCIIRenderer) Entity(out *bytes.Buffer, entity []byte) { r.fw(out, entity) }
|
||||
func (r *ASCIIRenderer) Smartypants(out *bytes.Buffer, text []byte) { r.fw(out, text) }
|
||||
func (r *ASCIIRenderer) DocumentHeader(out *bytes.Buffer) {}
|
||||
func (r *ASCIIRenderer) DocumentFooter(out *bytes.Buffer) {}
|
||||
func (r *ASCIIRenderer) TocHeaderWithAnchor(text []byte, level int, anchor string) {}
|
||||
func (r *ASCIIRenderer) TocHeader(text []byte, level int) {}
|
||||
func (r *ASCIIRenderer) TocFinalize() {}
|
||||
|
||||
func (r *ASCIIRenderer) Table(out *bytes.Buffer, header []byte, body []byte, columnData []int) {
|
||||
r.fw(out, header, body)
|
||||
}
|
||||
|
||||
func (r *ASCIIRenderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
|
||||
r.fw(out, link)
|
||||
}
|
||||
|
||||
func (r *ASCIIRenderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
|
||||
r.fw(out, link)
|
||||
}
|
||||
|
||||
func (r *ASCIIRenderer) fw(out *bytes.Buffer, text ...[]byte) {
|
||||
for _, t := range text {
|
||||
out.Write(t)
|
||||
}
|
||||
}
|
80
pkg/util/normalizer/normalizer.go
Normal file
80
pkg/util/normalizer/normalizer.go
Normal file
@ -0,0 +1,80 @@
|
||||
/*
|
||||
Copyright 2016 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
/*
|
||||
This file is copied from /pkg/kubectl/cmd/templates/normalizer.go
|
||||
In a future PR we should remove the original copy and use
|
||||
/pkg/util/normalizer everywhere.
|
||||
*/
|
||||
|
||||
package normalizer
|
||||
|
||||
import (
|
||||
"strings"
|
||||
|
||||
"github.com/MakeNowJust/heredoc"
|
||||
"github.com/russross/blackfriday"
|
||||
)
|
||||
|
||||
const indentation = ` `
|
||||
|
||||
// LongDesc normalizes a command's long description to follow the conventions.
|
||||
func LongDesc(s string) string {
|
||||
if len(s) == 0 {
|
||||
return s
|
||||
}
|
||||
return normalizer{s}.Heredoc().Markdown().Trim().string
|
||||
}
|
||||
|
||||
// Examples normalizes a command's examples to follow the conventions.
|
||||
func Examples(s string) string {
|
||||
if len(s) == 0 {
|
||||
return s
|
||||
}
|
||||
return normalizer{s}.Trim().Indent().string
|
||||
}
|
||||
|
||||
type normalizer struct {
|
||||
string
|
||||
}
|
||||
|
||||
func (s normalizer) Markdown() normalizer {
|
||||
bytes := []byte(s.string)
|
||||
formatted := blackfriday.Markdown(bytes, &ASCIIRenderer{Indentation: indentation}, 0)
|
||||
s.string = string(formatted)
|
||||
return s
|
||||
}
|
||||
|
||||
func (s normalizer) Heredoc() normalizer {
|
||||
s.string = heredoc.Doc(s.string)
|
||||
return s
|
||||
}
|
||||
|
||||
func (s normalizer) Trim() normalizer {
|
||||
s.string = strings.TrimSpace(s.string)
|
||||
return s
|
||||
}
|
||||
|
||||
func (s normalizer) Indent() normalizer {
|
||||
indentedLines := []string{}
|
||||
for _, line := range strings.Split(s.string, "\n") {
|
||||
trimmed := strings.TrimSpace(line)
|
||||
indented := indentation + trimmed
|
||||
indentedLines = append(indentedLines, indented)
|
||||
}
|
||||
s.string = strings.Join(indentedLines, "\n")
|
||||
return s
|
||||
}
|
Loading…
Reference in New Issue
Block a user