fix(updater): 官方仓库 404 不再提示私有仓库

internal/updater/github.go

@@ -45,7 +45,8 @@ type github struct {
 	// from a private fork, where its absence does not look like an auth failure:
 	// GitHub answers 404 — not 401 or 403 — for a private repo the caller cannot see, so
 	// "no token" is indistinguishable from "no release published yet" by status alone.
-	// latestStable says both in the error rather than making an operator guess.
+	// latestStable says both in the error rather than making an operator guess, for any
+	// repository other than the official one, which is public.
 	//
 	// It is read from the environment and never compiled in. A constant would be
 	// committed to the very repository it protects, ship inside every felis binary where
@@ -56,7 +57,7 @@ type github struct {
 }
 
 // tokenEnv names the environment variable holding the GitHub credential. deploy/bootstrap.sh
-// reads the same variable to clone a private repo, so an operator sets one value once.
+// reads the same variable to clone a private fork, so an operator sets one value once.
 const tokenEnv = "FELIS_GITHUB_TOKEN"
 
 // newGitHub builds a source pointed at the live GitHub REST API with sane defaults.
@@ -148,7 +149,10 @@ func (g github) latestTag(ctx context.Context, repo string) (string, error) {
 		// 404 is the ambiguous one: GitHub hides a private repo behind it rather than
 		// answering 401/403, so an unauthenticated miss and a repo with no stable release
 		// are the same status. Name both causes, and name the fix for the one an operator
-		// can act on.
+		// can act on. The official repository is public, so there only the first applies.
+		if resp.StatusCode == http.StatusNotFound && strings.EqualFold(repo, officialRepo) {
+			return "", fmt.Errorf("github: %s releases/latest returned HTTP 404 — it has no published stable release", repo)
+		}
 		if resp.StatusCode == http.StatusNotFound && g.token == "" {
 			return "", fmt.Errorf(
 				"github: %s releases/latest returned HTTP 404 — either it has no published stable release, or it is private and %s is unset",

internal/updater/github_test.go

@@ -223,4 +223,18 @@ func TestGitHubNamesTheTokenOnAnUnauthenticated404(t *testing.T) {
 	if strings.Contains(err.Error(), tokenEnv) {
 		t.Errorf("a 404 WITH a token set must not blame the missing token; got: %v", err)
 	}
+
+	// The official repository is public: a 404 there means no stable release, whatever
+	// the token.
+	g.token = ""
+	_, err = g.latestStable(context.Background(), "felismc/felis")
+	if err == nil {
+		t.Fatal("want an error on 404")
+	}
+	if strings.Contains(err.Error(), tokenEnv) || strings.Contains(err.Error(), "private") {
+		t.Errorf("a 404 from the public official repository must not suggest it is private; got: %v", err)
+	}
+	if !strings.Contains(err.Error(), "no published stable release") {
+		t.Errorf("a 404 from the official repository must say it has no stable release; got: %v", err)
+	}
 }

internal/updater/topology.go

@@ -13,6 +13,9 @@ const (
 	sourcePostgres                   // postgresql.org/versions.json, within Current's major
 )
 
+// officialRepo is Felis's own GitHub repository, which is public.
+const officialRepo = "FelisMC/Felis"
+
 // Spec is one platform component's static update policy plus how to find its latest
 // upstream version. Current is deliberately NOT here — it is gathered at runtime
 // (integration: an image tag, `k3s --version`, a jar manifest) and combined with the
@@ -56,11 +59,9 @@ type Spec struct {
 func Topology() []Spec {
 	return []Spec{
 		// Felis's own release repo, and the same slug deploy/bootstrap.sh clones from
-		// (FELIS_REPO_URL). It is PRIVATE today, which is why the github source carries an
-		// optional token: unauthenticated, this coord answers 404 — the status GitHub uses
-		// to hide a repo's existence — and felis-api is the one tracked component where
-		// that happens. k3s and cloudflared are public and need no credential.
-		{Name: "felis-api", Policy: updates.PolicyScheduled, Manageable: true, Source: sourceGitHub, Coord: "FelisMC/Felis"},
+		// (FELIS_REPO_URL). It is public, like k3s and cloudflared; the github source's
+		// optional token is for a build whose coord names a private fork.
+		{Name: "felis-api", Policy: updates.PolicyScheduled, Manageable: true, Source: sourceGitHub, Coord: officialRepo},
 		{Name: "k3s", Policy: updates.PolicyNotify, Manageable: false, Source: sourceGitHub, Coord: "k3s-io/k3s"},
 		{Name: "cloudflared", Policy: updates.PolicyScheduled, Manageable: true, Source: sourceGitHub, Coord: "cloudflare/cloudflared"},
 		{Name: "velocity", Policy: updates.PolicyNotify, Manageable: false, Source: sourcePaperMC, Coord: "velocity"},