dubbo.apache.org/dubbo-go/v3@v3.1.1/xds/utils/balancergroup/balancerstateaggregator.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  /*
    19   *
    20   * Copyright 2021 gRPC authors.
    21   *
    22   */
    23  
    24  package balancergroup
    25  
    26  import (
    27  	"google.golang.org/grpc/balancer"
    28  )
    29  
    30  // BalancerStateAggregator aggregates sub-picker and connectivity states into a
    31  // state.
    32  //
    33  // It takes care of merging sub-picker into one picker. The picking config is
    34  // passed directly from the the parent to the aggregator implementation (instead
    35  // via balancer group).
    36  type BalancerStateAggregator interface {
    37  	// UpdateState updates the state of the id.
    38  	//
    39  	// It's up to the implementation whether this will trigger an update to the
    40  	// parent ClientConn.
    41  	UpdateState(id string, state balancer.State)
    42  }