endpoint.Service: Bind multiple ephemeral identities at the same time #1009

docs/platform/view/db-driver.md

@@ -40,7 +40,7 @@ However, they all share one common interface such as the following:
 type BindingStore interface {
     GetLongTerm(ephemeral view.Identity) (view.Identity, error)
     HaveSameBinding(this, that view.Identity) (bool, error)
-    PutBinding(ephemeral, longTerm view.Identity) error
+    PutBindings(longTerm view.Identity, ephemeral ...view.Identity) error
 }
 
 type AuditInfoStore interface {

platform/common/driver/kvs.go

@@ -30,7 +30,7 @@ type AuditInfoStore interface {
 type BindingStore interface {
 	GetLongTerm(ctx context.Context, ephemeral view.Identity) (view.Identity, error)
 	HaveSameBinding(ctx context.Context, this, that view.Identity) (bool, error)
-	PutBinding(ctx context.Context, ephemeral, longTerm view.Identity) error
+	PutBindings(ctx context.Context, longTerm view.Identity, ephemeral ...view.Identity) error
 }
 
 type MetadataStore[K any, M any] interface {

platform/fabric/core/generic/endpoint/resolver.go

@@ -37,7 +37,7 @@ func (r *Resolver) GetIdentity() (view.Identity, error) {
 }
 
 type Service interface {
-	Bind(ctx context.Context, longTerm view.Identity, ephemeral view.Identity) error
+	Bind(ctx context.Context, longTerm view.Identity, ephemeral ...view.Identity) error
 	AddResolver(name string, domain string, addresses map[string]string, aliases []string, id []byte) (view.Identity, error)
 	AddPublicKeyExtractor(extractor endpoint.PublicKeyExtractor) error
 }

platform/fabric/core/generic/msp/driver/driver.go

@@ -37,7 +37,7 @@ type SignerService interface {
 }
 
 type BinderService interface {
-	Bind(ctx context.Context, longTerm view.Identity, ephemeral view.Identity) error
+	Bind(ctx context.Context, longTerm view.Identity, ephemeral ...view.Identity) error
 	GetIdentity(label string, pkiID []byte) (view.Identity, error)
 }
 

platform/view/sdk/dig/support/endpoint/resolver.go

@@ -55,7 +55,7 @@ type IdentityService interface {
 }
 
 type Backend interface {
-	Bind(ctx context.Context, longTerm view.Identity, ephemeral view.Identity) error
+	Bind(ctx context.Context, longTerm view.Identity, ephemeral ...view.Identity) error
 	AddResolver(name string, domain string, addresses map[string]string, aliases []string, id []byte) (view.Identity, error)
 }
 

platform/view/services/endpoint/service.go

@@ -146,18 +146,20 @@ func (r *Service) GetResolver(ctx context.Context, id view.Identity) (*Resolver,
 	return r.resolver(ctx, id)
 }
 
-func (r *Service) Bind(ctx context.Context, longTerm view.Identity, ephemeral view.Identity) error {
-	if longTerm.Equal(ephemeral) {
-		logger.DebugfContext(ctx, "cannot bind [%s] to [%s], they are the same", longTerm, ephemeral)
+func (r *Service) Bind(ctx context.Context, longTerm view.Identity, ephemeralIDs ...view.Identity) error {
+	// filter out any identities equal to the longTerm identity
+	var toBind []view.Identity
+	for _, id := range ephemeralIDs {
+		if !longTerm.Equal(id) {
+			toBind = append(toBind, id)
+		}
+	}
+	if len(toBind) == 0 {
 		return nil
 	}
-
-	logger.DebugfContext(ctx, "bind [%s] to [%s]", ephemeral, longTerm)
-
-	if err := r.bindingKVS.PutBinding(ctx, ephemeral, longTerm); err != nil {
-		return errors.WithMessagef(err, "failed storing binding of [%s]  to [%s]", ephemeral.UniqueID(), longTerm.UniqueID())
+	if err := r.bindingKVS.PutBindings(ctx, longTerm, toBind...); err != nil {
+		return errors.WithMessagef(err, "failed storing bindings")
 	}
-
 	return nil
 }
 

platform/view/services/endpoint/service_test.go

@@ -26,7 +26,9 @@ func (k mockKVS) GetLongTerm(ctx context.Context, ephemeral view.Identity) (view
 func (k mockKVS) HaveSameBinding(ctx context.Context, this, that view.Identity) (bool, error) {
 	return false, nil
 }
-func (k mockKVS) PutBinding(ctx context.Context, ephemeral, longTerm view.Identity) error { return nil }
+func (k mockKVS) PutBindings(ctx context.Context, longTerm view.Identity, ephemeral ...view.Identity) error {
+	return nil
+}
 
 type mockExtractor struct{}
 
@@ -58,7 +60,7 @@ func TestPKIResolveConcurrency(t *testing.T) {
 func TestGetIdentity(t *testing.T) {
 	// setup
 	bindingStore := &mock.BindingStore{}
-	bindingStore.PutBindingReturns(nil)
+	bindingStore.PutBindingsReturns(nil)
 
 	service, err := endpoint.NewService(bindingStore)
 	require.NoError(t, err)
@@ -73,7 +75,7 @@ func TestGetIdentity(t *testing.T) {
 	require.NoError(t, err)
 	resolvers := service.Resolvers()
 	assert.Len(t, resolvers, 1)
-	assert.Equal(t, 0, bindingStore.PutBindingCallCount())
+	assert.Equal(t, 0, bindingStore.PutBindingsCallCount())
 
 	_, err = service.AddResolver(
 		"alice",
@@ -85,7 +87,7 @@ func TestGetIdentity(t *testing.T) {
 	require.NoError(t, err)
 	resolvers = service.Resolvers()
 	assert.Len(t, resolvers, 1)
-	assert.Equal(t, 1, bindingStore.PutBindingCallCount())
+	assert.Equal(t, 1, bindingStore.PutBindingsCallCount())
 
 	err = service.AddPublicKeyExtractor(ext)
 	require.NoError(t, err)