Added container for message trace options

Signed-off-by: Ivan Kozlovic <ivan@synadia.com>

v2/account_claims.go

@@ -230,11 +230,16 @@ type Account struct {
 	DefaultPermissions Permissions           `json:"default_permissions,omitempty"`
 	Mappings           Mapping               `json:"mappings,omitempty"`
 	Authorization      ExternalAuthorization `json:"authorization,omitempty"`
-	TraceDest          Subject               `json:"trace_dest,omitempty"`
+	Trace              *MsgTrace             `json:"trace,omitempty"`
 	Info
 	GenericFields
 }
 
+// MsgTrace holds distributed message tracing configuration
+type MsgTrace struct {
+	Destination Subject `json:"dest,omitempty"`
+}
+
 // Validate checks if the account is valid, based on the wrapper
 func (a *Account) Validate(acct *AccountClaims, vr *ValidationResults) {
 	a.Imports.Validate(acct.Subject, vr)
@@ -243,14 +248,14 @@ func (a *Account) Validate(acct *AccountClaims, vr *ValidationResults) {
 	a.DefaultPermissions.Validate(vr)
 	a.Mappings.Validate(vr)
 	a.Authorization.Validate(vr)
-	if a.TraceDest != "" {
+	if a.Trace != nil {
 		tvr := CreateValidationResults()
-		a.TraceDest.Validate(tvr)
+		a.Trace.Destination.Validate(tvr)
 		if !tvr.IsEmpty() {
-			vr.AddError(fmt.Sprintf("the account TraceDest %s", tvr.Issues[0].Description))
+			vr.AddError(fmt.Sprintf("the account Trace.Destination %s", tvr.Issues[0].Description))
 		}
-		if a.TraceDest.HasWildCards() {
-			vr.AddError("the account TraceDest subject %q is not a valid publish subject", a.TraceDest)
+		if a.Trace.Destination.HasWildCards() {
+			vr.AddError("the account Trace.Destination subject %q is not a valid publish subject", a.Trace.Destination)
 		}
 	}
 

v2/account_claims_test.go

@@ -882,20 +882,23 @@ func TestAccountClaimsTraceDest(t *testing.T) {
 	apk := publicKey(akp, t)
 
 	account := NewAccountClaims(apk)
-	for _, test := range []struct {
+	for i, test := range []struct {
 		name        string
 		invalidSubj Subject
 		expectErr   bool
 	}{
 		{"trace not specified", "", false},
+		{"trace created but with empty destination", "", true},
 		{"trace dest has spaces", "invalid dest", true},
 		{"trace dest start with a dot", ".invalid.dest", true},
 		{"trace dest ends with a dot", "invalid.dest.", true},
 		{"trace dest has consecutive dots", "invalid..dest", true},
 		{"trace dest invalid publish dest", "invalid.publish.*.dest", true},
 	} {
 		t.Run(test.name, func(t *testing.T) {
-			account.TraceDest = test.invalidSubj
+			if i > 0 {
+				account.Trace = &MsgTrace{Destination: test.invalidSubj}
+			}
 			vr := CreateValidationResults()
 			account.Validate(vr)