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process-changelog.go
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/
process-changelog.go
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// Copyright 2021 Antrea 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.
// Run this script with "go run process-changelog.go <PATH to CHANGELOG> > <PATH to new CHANGELOG>".
// The script will:
// * Add links to PRs, by replacing all instances of [#<NUM>] with [#<NUM>](<link to PR NUM>)
// * Add links to the Github profiles of PR authors. It will look for instances of [@<AUTHOR>] in
// the CHANGELOG and generate the appropriate Markdown links at the end of the file.
package main
import (
"bufio"
"fmt"
"log"
"net/http"
"os"
"regexp"
"sort"
"time"
)
const (
repo = "https://github.com/antrea-io/antrea"
authorBaseURL = "https://github.com"
)
var (
pullBaseURL = fmt.Sprintf("%s/pull", repo)
)
func main() {
if len(os.Args) != 2 {
log.Fatalf("This script expects exactly one argument, the path to the CHANGELOG file")
}
filePath := os.Args[1]
file, err := os.Open(filePath)
if err != nil {
log.Fatal(err)
}
defer file.Close()
out := bufio.NewWriter(os.Stdout)
defer out.Flush()
// Add links to all PRs: [#XXXX] -> [#XXXX](<link>)
// Gather all author names: [@<author>]
scanner := bufio.NewScanner(file)
prRef := regexp.MustCompile(`(\[#[0-9]+\])[^(]`)
authorRef := regexp.MustCompile(`\[@([a-zA-Z0-9-]+)\][^(]`)
allAuthors := make(map[string]bool)
for scanner.Scan() {
line := scanner.Text()
if len(line) == 0 || line[0] != '-' {
out.WriteString(line)
out.WriteString("\n")
continue
}
line = prRef.ReplaceAllString(line, fmt.Sprintf("$1(%s/$1)", pullBaseURL))
matches := authorRef.FindAllStringSubmatch(line, -1)
for _, match := range matches {
allAuthors[match[1]] = true
}
out.WriteString(line)
out.WriteString("\n")
}
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
out.Flush()
log.Printf("Checking Github accounts, this could take a while...")
numAuthors := len(allAuthors)
sortedAuthors := make([]string, 0, numAuthors)
for author := range allAuthors {
sortedAuthors = append(sortedAuthors, author)
}
sort.Strings(sortedAuthors)
timeout := time.Duration(3 * time.Second)
client := http.Client{
Timeout: timeout,
}
for _, author := range sortedAuthors {
log.Printf("Checking %s", author)
url := fmt.Sprintf("%s/%s", authorBaseURL, author)
if _, err := client.Head(url); err != nil {
log.Printf("FAILURE: %v", err)
} else {
log.Printf("SUCCESS")
}
out.WriteString(fmt.Sprintf("[@%s]: %s\n", author, url))
}
}