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Add script to generate plugin overview page #260

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merged 5 commits into from
Jul 25, 2019
Merged

Add script to generate plugin overview page #260

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8a2f177
Add script to generate plugin overview page
corneliusweig Jul 16, 2019
84aff89
Move plugin-overview.go to cmd/plugin-overview
corneliusweig Jul 16, 2019
a6fecb6
Decouple plugin-overview module from main krew
corneliusweig Jul 16, 2019
9107884
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corneliusweig Jul 25, 2019
5f8e809
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corneliusweig Jul 25, 2019
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12 changes: 12 additions & 0 deletions cmd/plugin-overview/go.mod
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
module sigs.k8s.io/krew/cmd/plugin-overview
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let's call this gen-plugin-overviews or generate-.
otherwise this tool's name is unclear about what it does.


go 1.12

require (
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
github.com/pkg/errors v0.8.1 // indirect
github.com/spf13/pflag v1.0.3
sigs.k8s.io/krew v0.2.1
)

replace sigs.k8s.io/krew => ../..
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I am suspecting this would cause issues if I go to a computer and cleanly do sigs.k8s.io/krew/cmd/plugin-overview.

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Yes, probably. The problem is that I want to use the homepage field, which was added after the last krew release.
I pinned the import to the current master HEAD instead, to solve the issue you raised.

123 changes: 123 additions & 0 deletions cmd/plugin-overview/go.sum
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Original file line number Diff line number Diff line change
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github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
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gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
k8s.io/apimachinery v0.0.0-20190717022731-0bb8574e0887 h1:JVVkMN2P4a3MNzTkjgCCRwBDAGAENrCsZGLoLtQ5jvI=
k8s.io/apimachinery v0.0.0-20190717022731-0bb8574e0887/go.mod h1:sBJWIJZfxLhp7mRsRyuAE/NfKTr3kXGR1iaqg8O0gJo=
k8s.io/client-go v7.0.0+incompatible/go.mod h1:7vJpHMYJwNQCWgzmNV+VYUl1zCObLyodBc8nIyt8L5s=
k8s.io/gengo v0.0.0-20190128074634-0689ccc1d7d6/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
k8s.io/klog v0.0.0-20181102134211-b9b56d5dfc92/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v0.3.1 h1:RVgyDHY/kFKtLqh67NvEWIgkMneNoIrdkN0CxDSQc68=
k8s.io/klog v0.3.1/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/klog v0.3.3 h1:niceAagH1tzskmaie/icWd7ci1wbG7Bf2c6YGcQv+3c=
k8s.io/klog v0.3.3/go.mod h1:Gq+BEi5rUBO/HRz0bTSXDUcqjScdoY3a9IHpCEIOOfk=
k8s.io/kube-openapi v0.0.0-20190709113604-33be087ad058/go.mod h1:nfDlWeOsu3pUf4yWGL+ERqohP4YsZcBJXWMK+gkzOA4=
sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
sigs.k8s.io/yaml v1.1.0 h1:4A07+ZFc2wgJwo8YNlQpr1rVlgUDlxXHhPJciaPY5gs=
sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
109 changes: 109 additions & 0 deletions cmd/plugin-overview/plugin-overview.go
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// Copyright 2019 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.

// plugin-overview reads the manifests in a directory and creates a markdown overview page
package main

import (
"fmt"
"io"
"os"
"regexp"
"strings"

"github.com/golang/glog"
"github.com/spf13/pflag"

"sigs.k8s.io/krew/pkg/index"
"sigs.k8s.io/krew/pkg/index/indexscanner"
)

const (
separator = " | "
pageHeader = `# Plugin overview

Below is a table of plugins available in the central krew-index.

`
)

var (
githubRepoPattern = regexp.MustCompile(`.*github.com/([^/]+/[^/#]+)`)
)

func main() {
pluginsDir := pflag.String("plugins-dir", "", "The directory containing the plugin manifests")
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do you get much out of pflag vs stdlib pkg/flags here?

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No. This is a leftover from when this tool was not its own module.
Only the usage output looks a bit weird when using vanilla flags, though.

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I wouldn't worry about usage as it's not a primary tool.

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I see your point now. glog hijacks the flags smh.

pflag.Parse()

if *pluginsDir == "" {
pflag.Usage()
return
}

plugins, err := indexscanner.LoadPluginListFromFS(*pluginsDir)
if err != nil {
glog.Fatal(err)
}

out := os.Stdout

_, _ = fmt.Fprintln(out, pageHeader)

printTableHeader(out)
for _, p := range plugins {
printTableRowForPlugin(out, &p)
}
}

func printTableHeader(out io.Writer) {
printRow(out, "Name", "Description", "GitHub Stars")
printRow(out, "----", "-----------", "------------")
}

func printTableRowForPlugin(out io.Writer, p *index.Plugin) {
// 1st column
name := p.Name
if homepage := p.Spec.Homepage; homepage != "" {
name = fmt.Sprintf("[%s](%s)", strings.TrimSpace(name), homepage)
}

// 2nd column
description := strings.TrimSpace(p.Spec.ShortDescription)

// 3rd column
shield := makeGithubShield(p.Spec.Homepage)

printRow(out, name, description, shield)
}

func makeGithubShield(homepage string) string {
repo := ""

if matches := githubRepoPattern.FindStringSubmatch(homepage); matches != nil {
repo = matches[1]
} else if homepage == `https://sigs.k8s.io/krew` {
repo = "kubernetes-sigs/krew"
} else if homepage == `https://kubernetes.github.io/ingress-nginx/kubectl-plugin/` {
repo = "kubernetes/ingress-nginx"
}

if repo == "" {
return ""
}
return "![GitHub stars](https://img.shields.io/github/stars/" + repo + ".svg?label=github%20stars&logo=github)"
}

func printRow(w io.Writer, cols ...string) {
_, _ = fmt.Fprintln(w, strings.Join(cols, separator))
}