ocm: simplified error handling (#4810)

changelog/unreleased/ocm-error-handling.md

@@ -0,0 +1,5 @@
+Bugfix: simplified error handling
+
+Minor rewording and simplification, following cs3org/OCM-API#90 and cs3org/OCM-API#91
+
+https://github.com/cs3org/reva/pull/4810

internal/grpc/services/ocminvitemanager/ocminvitemanager.go

@@ -174,11 +174,7 @@ func (s *service) ForwardInvite(ctx context.Context, req *invitepb.ForwardInvite
 		switch {
 		case errors.Is(err, ocmd.ErrTokenInvalid):
 			return &invitepb.ForwardInviteResponse{
-				Status: status.NewInvalid(ctx, "token not valid"),
-			}, nil
-		case errors.Is(err, ocmd.ErrTokenNotFound):
-			return &invitepb.ForwardInviteResponse{
-				Status: status.NewNotFound(ctx, "token not found"),
+				Status: status.NewInvalid(ctx, "token invalid or not found"),
 			}, nil
 		case errors.Is(err, ocmd.ErrUserAlreadyAccepted):
 			return &invitepb.ForwardInviteResponse{
@@ -240,7 +236,7 @@ func (s *service) AcceptInvite(ctx context.Context, req *invitepb.AcceptInviteRe
 	if err != nil {
 		if errors.Is(err, invite.ErrTokenNotFound) {
 			return &invitepb.AcceptInviteResponse{
-				Status: status.NewNotFound(ctx, "token not found"),
+				Status: status.NewInvalid(ctx, "token invalid or not found"),
 			}, nil
 		}
 		return &invitepb.AcceptInviteResponse{
@@ -250,7 +246,7 @@ func (s *service) AcceptInvite(ctx context.Context, req *invitepb.AcceptInviteRe
 
 	if !isTokenValid(token) {
 		return &invitepb.AcceptInviteResponse{
-			Status: status.NewInvalid(ctx, "token is not valid"),
+			Status: status.NewInvalid(ctx, "token invalid or not found"),
 		}, nil
 	}
 

internal/http/services/experimental/sciencemesh/token.go

@@ -178,16 +178,15 @@ func (h *tokenHandler) AcceptInvite(w http.ResponseWriter, r *http.Request) {
 	if forwardInviteResponse.Status.Code != rpc.Code_CODE_OK {
 		switch forwardInviteResponse.Status.Code {
 		case rpc.Code_CODE_NOT_FOUND:
-			reqres.WriteError(w, r, reqres.APIErrorNotFound, "token not found", nil)
-			return
+			fallthrough
 		case rpc.Code_CODE_INVALID_ARGUMENT:
-			reqres.WriteError(w, r, reqres.APIErrorInvalidParameter, "token has expired", nil)
+			reqres.WriteError(w, r, reqres.APIErrorInvalidParameter, "invalid or non existing token", nil)
 			return
 		case rpc.Code_CODE_ALREADY_EXISTS:
-			reqres.WriteError(w, r, reqres.APIErrorAlreadyExist, "user already known", nil)
+			reqres.WriteError(w, r, reqres.APIErrorAlreadyExist, "invitation already accepted", nil)
 			return
 		case rpc.Code_CODE_PERMISSION_DENIED:
-			reqres.WriteError(w, r, reqres.APIErrorUnauthenticated, "remove service not trusted", nil)
+			reqres.WriteError(w, r, reqres.APIErrorUnauthenticated, "remote service not trusted", nil)
 			return
 		default:
 			reqres.WriteError(w, r, reqres.APIErrorServerError, "unexpected error: "+forwardInviteResponse.Status.Message, errors.New(forwardInviteResponse.Status.Message))

internal/http/services/opencloudmesh/ocmd/client.go

@@ -35,20 +35,16 @@ import (
 )
 
 // ErrTokenInvalid is the error returned by the invite-accepted
-// endpoint when the token is not valid.
-var ErrTokenInvalid = errors.New("the invitation token is invalid")
+// endpoint when the token is not valid or not existing.
+var ErrTokenInvalid = errors.New("the invitation token is invalid or not found")
 
 // ErrServiceNotTrusted is the error returned by the invite-accepted
 // endpoint when the service is not trusted to accept invitations.
 var ErrServiceNotTrusted = errors.New("service is not trusted to accept invitations")
 
 // ErrUserAlreadyAccepted is the error returned by the invite-accepted
-// endpoint when a user is already know by the remote cloud.
-var ErrUserAlreadyAccepted = errors.New("user already accepted an invitation token")
-
-// ErrTokenNotFound is the error returned by the invite-accepted
-// endpoint when the request is done using a not existing token.
-var ErrTokenNotFound = errors.New("token not found")
+// endpoint when a token was already used by a user in the remote cloud.
+var ErrUserAlreadyAccepted = errors.New("invitation already accepted")
 
 // ErrInvalidParameters is the error returned by the shares endpoint
 // when the request does not contain required properties.
@@ -250,8 +246,6 @@ func (c *OCMClient) parseInviteAcceptedResponse(r *http.Response) (*User, error)
 		return &u, nil
 	case http.StatusBadRequest:
 		return nil, ErrTokenInvalid
-	case http.StatusNotFound:
-		return nil, ErrTokenNotFound
 	case http.StatusConflict:
 		return nil, ErrUserAlreadyAccepted
 	case http.StatusForbidden:

internal/http/services/opencloudmesh/ocmd/shares.go

@@ -249,10 +249,15 @@ func getResourceTypeFromOCMRequest(t string) providerpb.ResourceType {
 }
 
 func getOCMShareType(t string) ocm.ShareType {
-	if t == "user" {
+	switch t {
+	case "user":
+		return ocm.ShareType_SHARE_TYPE_USER
+	case "group":
+		return ocm.ShareType_SHARE_TYPE_GROUP
+	default:
+		// for now assume user share if not provided
 		return ocm.ShareType_SHARE_TYPE_USER
 	}
-	return ocm.ShareType_SHARE_TYPE_GROUP
 }
 
 func getAndResolveProtocols(p Protocols, r *http.Request) ([]*ocm.Protocol, error) {

tests/integration/grpc/ocm_invitation_test.go

@@ -262,7 +262,7 @@ var _ = Describe("ocm invitation workflow", func() {
 			})
 		})
 
-		Describe("marie accept a not existing token", func() {
+		Describe("marie accept a non existing token", func() {
 			var cleanup func()
 			BeforeEach(func() {
 				variables, cleanup, err = initData(driver, nil, nil)
@@ -276,12 +276,12 @@ var _ = Describe("ocm invitation workflow", func() {
 			It("will not complete the invitation workflow", func() {
 				forwardRes, err := cesnetgw.ForwardInvite(ctxMarie, &invitepb.ForwardInviteRequest{
 					InviteToken: &invitepb.InviteToken{
-						Token: "not-existing-token",
+						Token: "non-existing-token",
 					},
 					OriginSystemProvider: cernbox,
 				})
 				Expect(err).ToNot(HaveOccurred())
-				Expect(forwardRes.Status.Code).To(Equal(rpc.Code_CODE_NOT_FOUND))
+				Expect(forwardRes.Status.Code).To(Equal(rpc.Code_CODE_INVALID_ARGUMENT))
 			})
 		})