meter: rework labels

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

meter/meter_test.go

@@ -10,46 +10,15 @@ func TestNoopMeter(t *testing.T) {
 		t.Fatalf("invalid options parsing: %v", m.Options())
 	}
 
-	cnt := m.Counter("counter", Label("server", "noop"))
+	cnt := m.Counter("counter", Labels("server", "noop"))
 	cnt.Inc()
 }
 
-func TestLabelsAppend(t *testing.T) {
-	var ls Labels
-	ls.keys = []string{"type", "server"}
-	ls.vals = []string{"noop", "http"}
+func TestLabelsSort(t *testing.T) {
+	ls := []string{"server", "http", "register", "mdns", "broker", "broker1", "broker", "broker2", "server", "tcp"}
+	Sort(&ls)
 
-	var nls Labels
-	nls.keys = []string{"register"}
-	nls.vals = []string{"gossip"}
-	ls = ls.Append(nls)
-
-	//ls.Sort()
-
-	if ls.keys[0] != "type" || ls.vals[0] != "noop" {
-		t.Fatalf("append error: %v", ls)
-	}
-}
-
-func TestIterator(t *testing.T) {
-	options := NewOptions(
-		Label("name", "svc1"),
-		Label("version", "0.0.1"),
-		Label("id", "12345"),
-		Label("type", "noop"),
-		Label("server", "http"),
-		Label("register", "gossip"),
-		Label("aa", "kk"),
-		Label("zz", "kk"),
-	)
-
-	iter := options.Labels.Iter()
-	var k, v string
-	cnt := 0
-	for iter.Next(&k, &v) {
-		if cnt == 4 && (k != "server" || v != "http") {
-			t.Fatalf("iter error: %s != %s || %s != %s", k, "server", v, "http")
-		}
-		cnt++
+	if ls[0] != "broker" || ls[1] != "broker2" {
+		t.Fatalf("sort error: %v", ls)
 	}
 }