Re-add support for github auth from the GITHUB_TOKEN env variable.

cmd/pullrequest-init/github.go

@@ -1,16 +1,20 @@
 package main
 
 import (
+	"context"
 	"fmt"
 	"net/url"
+	"os"
 	"strconv"
 	"strings"
 
+	"golang.org/x/oauth2"
+
 	"github.com/jenkins-x/go-scm/scm/driver/github"
 	"go.uber.org/zap"
 )
 
-func NewGitHubHandler(logger *zap.SugaredLogger, raw string) (*Handler, error) {
+func NewGitHubHandler(ctx context.Context, logger *zap.SugaredLogger, raw string) (*Handler, error) {
 	u, err := url.Parse(raw)
 	if err != nil {
 		return nil, err
@@ -26,6 +30,14 @@ func NewGitHubHandler(logger *zap.SugaredLogger, raw string) (*Handler, error) {
 	}
 
 	client := github.NewDefault()
+	token := os.Getenv("GITHUB_TOKEN")
+	if token != "" {
+		ts := oauth2.StaticTokenSource(
+			&oauth2.Token{AccessToken: token},
+		)
+		hc := oauth2.NewClient(ctx, ts)
+		client.Client = hc
+	}
 	ownerRepo := fmt.Sprintf("%s/%s", owner, repo)
 	return NewHandler(logger, client, ownerRepo, prNumber), nil
 }

cmd/pullrequest-init/github_test.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"testing"
 
 	"go.uber.org/zap"
@@ -13,7 +14,7 @@ func TestNewGitHubHandler(t *testing.T) {
 		"https://github.tekton.dev/foo/bar/pull/1",
 	} {
 		t.Run(url, func(t *testing.T) {
-			h, err := NewGitHubHandler(zaptest.NewLogger(t, zaptest.WrapOptions(zap.AddCaller())).Sugar(), url)
+			h, err := NewGitHubHandler(context.Background(), zaptest.NewLogger(t, zaptest.WrapOptions(zap.AddCaller())).Sugar(), url)
 			if err != nil {
 				t.Fatalf("error creating GitHubHandler: %v", err)
 			}

cmd/pullrequest-init/main.go

@@ -35,7 +35,7 @@ func main() {
 	defer logger.Sync()
 	ctx := context.Background()
 
-	client, err := NewGitHubHandler(logger, *prURL)
+	client, err := NewGitHubHandler(ctx, logger, *prURL)
 	if err != nil {
 		logger.Fatalf("error creating GitHub client: %v", err)
 	}