fix: fix parsing of default per tenant otlp config (#12836)

integration/cluster/cluster.go

@@ -68,6 +68,9 @@ limits_config:
       attributes_config:
         - action: index_label
           attributes: ["service.name"]
+    log_attributes:
+      - action: drop
+        attributes: [email]
 
 storage_config:
   named_stores:
@@ -430,6 +433,7 @@ func (c *Component) run() error {
 		return err
 	}
 
+	config.LimitsConfig.SetGlobalOTLPConfig(config.Distributor.OTLPConfig)
 	var err error
 	c.loki, err = loki.New(config.Config)
 	if err != nil {

integration/loki_micro_services_test.go

@@ -739,7 +739,7 @@ func TestOTLPLogsIngestQuery(t *testing.T) {
 
 	t.Run("ingest-logs", func(t *testing.T) {
 		// ingest some log lines
-		require.NoError(t, cliDistributor.PushOTLPLogLine("lineA", now.Add(-45*time.Minute), map[string]any{"trace_id": 1, "user_id": "2"}))
+		require.NoError(t, cliDistributor.PushOTLPLogLine("lineA", now.Add(-45*time.Minute), map[string]any{"trace_id": 1, "user_id": "2", "email": "[email protected]"}))
 		require.NoError(t, cliDistributor.PushOTLPLogLine("lineB", now.Add(-45*time.Minute), nil))
 
 		require.NoError(t, cliDistributor.PushOTLPLogLine("lineC", now, map[string]any{"order.ids": []any{5, 6}}))

pkg/validation/limits.go

@@ -402,7 +402,7 @@ func (l *Limits) RegisterFlags(f *flag.FlagSet) {
 // SetGlobalOTLPConfig set GlobalOTLPConfig which is used while unmarshaling per-tenant otlp config to use the default list of resource attributes picked as index labels.
 func (l *Limits) SetGlobalOTLPConfig(cfg push.GlobalOTLPConfig) {
 	l.GlobalOTLPConfig = cfg
-	l.OTLPConfig = push.DefaultOTLPConfig(cfg)
+	l.OTLPConfig.ApplyGlobalOTLPConfig(cfg)
 }
 
 // UnmarshalYAML implements the yaml.Unmarshaler interface.