snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

internal/balancergroup/balancerstateaggregator.go

@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package balancergroup
+
+import (
+	"google.golang.org/grpc/balancer"
+)
+
+// BalancerStateAggregator aggregates sub-picker and connectivity states into a
+// state.
+//
+// It takes care of merging sub-picker into one picker. The picking config is
+// passed directly from the parent to the aggregator implementation (instead
+// via balancer group).
+type BalancerStateAggregator interface {
+	// UpdateState updates the state of the id.
+	//
+	// It's up to the implementation whether this will trigger an update to the
+	// parent ClientConn.
+	UpdateState(id string, state balancer.State)
+}