registry/memory: add support for domain options (#1713)

* registry/memory: add support for the domain options

* registry/memory: swap Fatal test cases with Error

* registry/memory: fix wildcard not found bug

* registry/memory: replace locks with rlocks

* registry/memory: fix deregistration bug

registry/memory/memory_test.go

@@ -244,3 +244,39 @@ func TestMemoryRegistryTTLConcurrent(t *testing.T) {
 		}
 	}
 }
+
+func TestMemoryWildcard(t *testing.T) {
+	m := NewRegistry()
+	testSrv := &registry.Service{Name: "foo", Version: "1.0.0"}
+
+	if err := m.Register(testSrv, registry.RegisterDomain("one")); err != nil {
+		t.Fatalf("Register err: %v", err)
+	}
+	if err := m.Register(testSrv, registry.RegisterDomain("two")); err != nil {
+		t.Fatalf("Register err: %v", err)
+	}
+
+	if recs, err := m.ListServices(registry.ListDomain("one")); err != nil {
+		t.Errorf("List err: %v", err)
+	} else if len(recs) != 1 {
+		t.Errorf("Expected 1 record, got %v", len(recs))
+	}
+
+	if recs, err := m.ListServices(registry.ListDomain("*")); err != nil {
+		t.Errorf("List err: %v", err)
+	} else if len(recs) != 2 {
+		t.Errorf("Expected 2 records, got %v", len(recs))
+	}
+
+	if recs, err := m.GetService(testSrv.Name, registry.GetDomain("one")); err != nil {
+		t.Errorf("Get err: %v", err)
+	} else if len(recs) != 1 {
+		t.Errorf("Expected 1 record, got %v", len(recs))
+	}
+
+	if recs, err := m.GetService(testSrv.Name, registry.GetDomain("*")); err != nil {
+		t.Errorf("Get err: %v", err)
+	} else if len(recs) != 2 {
+		t.Errorf("Expected 2 records, got %v", len(recs))
+	}
+}