feat: support GitHub enterprise for BOSH Releases

story: TPCF-26493

Co-authored-by: Joe Eltgroth <jeltgroth@vmware.com>

internal/acceptance/workflows/scenario/step_funcs_github.go

@@ -13,7 +13,10 @@ func githubRepoHasReleaseWithTag(ctx context.Context, repoOrg, repoName, tag str
 	if err != nil {
 		return err
 	}
-	ghAPI := gh.Client(ctx, accessToken)
+	ghAPI, err := gh.Client(ctx, "", accessToken)
+	if err != nil {
+		return fmt.Errorf("failed to setup github client: %w", err)
+	}
 	_, response, err := ghAPI.Repositories.GetReleaseByTag(ctx, repoOrg, repoName, tag)
 	if err != nil {
 		return err

internal/commands/release_notes.go

@@ -30,6 +30,7 @@ type ReleaseNotes struct {
 		ReleaseDate  string `long:"release-date" short:"d" description:"release date of the tile"`
 		TemplateName string `long:"template"     short:"t" description:"path to template"`
 		GithubToken  string `long:"github-token" short:"g" description:"auth token for fetching issues merged between releases" env:"GITHUB_TOKEN"`
+		GithubHost   string `long:"github-host"            description:"set this when you are using GitHub enterprise" env:"GITHUB_HOST"`
 		Kilnfile     string `long:"kilnfile"     short:"k" description:"path to Kilnfile"`
 		DocsFile     string `long:"update-docs"  short:"u" description:"path to docs file to update"`
 		Window       string `long:"window"       short:"w" description:"GA window for release notes" default:"ga"`
@@ -85,7 +86,10 @@ func (r ReleaseNotes) Execute(args []string) error {
 
 	var client *github.Client
 	if r.Options.GithubToken != "" {
-		client = gh.Client(ctx, r.Options.GithubToken)
+		client, err = gh.Client(ctx, r.Options.GithubHost, r.Options.GithubToken)
+		if err != nil {
+			return fmt.Errorf("failed to setup github client: %w", err)
+		}
 	}
 
 	trainstatClient := notes.NewTrainstatClient(r.Options.TrainstatQuery.TrainstatURL)

internal/component/github_release_source.go

@@ -44,11 +44,19 @@ func NewGithubReleaseSource(c cargo.ReleaseSourceConfig) *GithubReleaseSource {
 	if c.Org == "" {
 		panic("no github org passed for github release source")
 	}
-
 	ctx := context.TODO()
 	tokenSource := oauth2.StaticTokenSource(&oauth2.Token{AccessToken: c.GithubToken})
 	tokenClient := oauth2.NewClient(ctx, tokenSource)
-	githubClient := github.NewClient(tokenClient)
+	var githubClient *github.Client
+	if c.Endpoint != "" {
+		var err error
+		githubClient, err = github.NewEnterpriseClient(c.Endpoint, c.Endpoint, tokenClient)
+		if err != nil {
+			panic(err)
+		}
+	} else {
+		githubClient = github.NewClient(tokenClient)
+	}
 
 	return &GithubReleaseSource{
 		ReleaseSourceConfig: c,

internal/gh/client.go

@@ -7,6 +7,10 @@ import (
 	"golang.org/x/oauth2"
 )
 
-func Client(ctx context.Context, accessToken string) *github.Client {
-	return github.NewClient(oauth2.NewClient(ctx, oauth2.StaticTokenSource(&oauth2.Token{AccessToken: accessToken})))
+func Client(ctx context.Context, host, accessToken string) (*github.Client, error) {
+	client := oauth2.NewClient(ctx, oauth2.StaticTokenSource(&oauth2.Token{AccessToken: accessToken}))
+	if host == "" {
+		return github.NewClient(client), nil
+	}
+	return github.NewEnterpriseClient(host, host, client)
 }

internal/gh/client_test.go

@@ -4,14 +4,27 @@ import (
 	"context"
 	"testing"
 
-	"github.com/stretchr/testify/require"
-
 	"github.com/pivotal-cf/kiln/internal/gh"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestClient(t *testing.T) {
-	ctx := context.Background()
-	token := "xxx"
-	ghClient := gh.Client(ctx, token)
-	require.NotNil(t, ghClient.Client())
+	t.Run("when the host is empty", func(t *testing.T) {
+		ctx := context.Background()
+		token := "xxx"
+		ghClient, err := gh.Client(ctx, "", token)
+		require.NoError(t, err)
+		require.NotNil(t, ghClient.Client())
+		assert.Contains(t, ghClient.BaseURL.String(), "https://api.github.com")
+	})
+
+	t.Run("when the host is not empty", func(t *testing.T) {
+		ctx := context.Background()
+		token := "xxx"
+		ghClient, err := gh.Client(ctx, "https://example.com", token)
+		require.NoError(t, err)
+		require.NotNil(t, ghClient.Client())
+		assert.Contains(t, ghClient.BaseURL.String(), "https://example.com")
+	})
 }