add context

cmd/whatchanged-server/main.go

@@ -57,7 +57,7 @@ func handler(w http.ResponseWriter, r *http.Request) {
 
 	url := fmt.Sprintf("https://github.com/%s/%s", username, repo)
 
-	if err = whatchanged.Generate(url, output, &option.Options{
+	if err = whatchanged.Generate(r.Context(), url, output, &option.Options{
 		Version:  regexp.MustCompile(`\s+`).Split(version, -1),
 		Branch:   branch,
 		Template: template,

cmd/whatchanged/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"os"
@@ -169,7 +170,7 @@ func run() error {
 		output = f
 	}
 
-	if err := whatchanged.Generate(project, output, &option.Options{
+	if err := whatchanged.Generate(context.Background(), project, output, &option.Options{
 		Version:      ranges,
 		Branch:       branch,
 		Preset:       option.Preset(preset),

whatchanged.go

@@ -28,7 +28,7 @@ var (
 
 // generate changelog
 // project: it could be a file path or a git URL
-func Generate(project string, w io.Writer, options *option.Options) error {
+func Generate(ctx context.Context, project string, w io.Writer, options *option.Options) error {
 	var (
 		err error
 	)
@@ -66,7 +66,7 @@ func Generate(project string, w io.Writer, options *option.Options) error {
 	var g *client.GitClient
 
 	if gitHTTPURLReg.MatchString(project) || gitSSHURLReg.MatchString(project) {
-		repo, err := git.CloneContext(context.Background(), memory.NewStorage(), nil, &git.CloneOptions{
+		repo, err := git.CloneContext(ctx, memory.NewStorage(), nil, &git.CloneOptions{
 			URL:           project,
 			Progress:      os.Stderr,
 			SingleBranch:  true,