fix(gateway): return HTTP 500 on namesys.ErrResolveFailed (#150)

Author: hacdias

gateway/gateway_test.go

@@ -349,17 +349,17 @@ func TestGatewayGet(t *testing.T) {
 		{"127.0.0.1:8080", "/", http.StatusNotFound, "404 page not found\n"},
 		{"127.0.0.1:8080", "/" + k.Cid().String(), http.StatusNotFound, "404 page not found\n"},
 		{"127.0.0.1:8080", k.String(), http.StatusOK, "fnord"},
-		{"127.0.0.1:8080", "/ipns/nxdomain.example.com", http.StatusBadRequest, "ipfs resolve -r /ipns/nxdomain.example.com: " + namesys.ErrResolveFailed.Error() + "\n"},
-		{"127.0.0.1:8080", "/ipns/%0D%0A%0D%0Ahello", http.StatusBadRequest, "ipfs resolve -r /ipns/\\r\\n\\r\\nhello: " + namesys.ErrResolveFailed.Error() + "\n"},
+		{"127.0.0.1:8080", "/ipns/nxdomain.example.com", http.StatusInternalServerError, "ipfs resolve -r /ipns/nxdomain.example.com: " + namesys.ErrResolveFailed.Error() + "\n"},
+		{"127.0.0.1:8080", "/ipns/%0D%0A%0D%0Ahello", http.StatusInternalServerError, "ipfs resolve -r /ipns/\\r\\n\\r\\nhello: " + namesys.ErrResolveFailed.Error() + "\n"},
 		{"127.0.0.1:8080", "/ipns/example.com", http.StatusOK, "fnord"},
 		{"example.com", "/", http.StatusOK, "fnord"},
 
 		{"working.example.com", "/", http.StatusOK, "fnord"},
 		{"double.example.com", "/", http.StatusOK, "fnord"},
 		{"triple.example.com", "/", http.StatusOK, "fnord"},
 		{"working.example.com", k.String(), http.StatusNotFound, "ipfs resolve -r /ipns/working.example.com" + k.String() + ": no link named \"ipfs\" under " + k.Cid().String() + "\n"},
-		{"broken.example.com", "/", http.StatusBadRequest, "ipfs resolve -r /ipns/broken.example.com/: " + namesys.ErrResolveFailed.Error() + "\n"},
-		{"broken.example.com", k.String(), http.StatusBadRequest, "ipfs resolve -r /ipns/broken.example.com" + k.String() + ": " + namesys.ErrResolveFailed.Error() + "\n"},
+		{"broken.example.com", "/", http.StatusInternalServerError, "ipfs resolve -r /ipns/broken.example.com/: " + namesys.ErrResolveFailed.Error() + "\n"},
+		{"broken.example.com", k.String(), http.StatusInternalServerError, "ipfs resolve -r /ipns/broken.example.com" + k.String() + ": " + namesys.ErrResolveFailed.Error() + "\n"},
 		// This test case ensures we don't treat the TLD as a file extension.
 		{"example.man", "/", http.StatusOK, "fnord"},
 	} {

gateway/handler.go

@@ -18,6 +18,7 @@ import (
 	cid "github.com/ipfs/go-cid"
 	ipld "github.com/ipfs/go-ipld-format"
 	logging "github.com/ipfs/go-log"
+	"github.com/ipfs/go-namesys"
 	"github.com/ipfs/go-path/resolver"
 	coreiface "github.com/ipfs/interface-go-ipfs-core"
 	ipath "github.com/ipfs/interface-go-ipfs-core/path"
@@ -743,6 +744,10 @@ func (i *handler) handlePathResolution(w http.ResponseWriter, r *http.Request, r
 	case coreiface.ErrOffline:
 		webError(w, "ipfs resolve -r "+debugStr(contentPath.String()), err, http.StatusServiceUnavailable)
 		return nil, nil, false
+	case namesys.ErrResolveFailed:
+		// Note: webError will replace http.StatusBadRequest with StatusNotFound or StatusRequestTimeout if necessary
+		webError(w, "ipfs resolve -r "+debugStr(contentPath.String()), err, http.StatusInternalServerError)
+		return nil, nil, false
 	default:
 		// The path can't be resolved.
 		if isUnixfsResponseFormat(responseFormat) {
@@ -767,7 +772,7 @@ func (i *handler) handlePathResolution(w http.ResponseWriter, r *http.Request, r
 			}
 		}
 
-		// Note: webError will replace http.StatusBadRequest  with StatusNotFound if necessary
+		// Note: webError will replace http.StatusBadRequest with StatusNotFound or StatusRequestTimeout if necessary
 		webError(w, "ipfs resolve -r "+debugStr(contentPath.String()), err, http.StatusBadRequest)
 		return nil, nil, false
 	}