dubbo.apache.org/dubbo-go/v3@v3.1.1/xds/balancer/clusterresolver/weightedtarget_config.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 2020 gRPC authors.
    21   *
    22   */
    23  
    24  package clusterresolver
    25  
    26  import (
    27  	"encoding/json"
    28  )
    29  
    30  import (
    31  	"google.golang.org/grpc/serviceconfig"
    32  )
    33  
    34  import (
    35  	internalserviceconfig "dubbo.apache.org/dubbo-go/v3/xds/utils/serviceconfig"
    36  )
    37  
    38  // Target represents one target with the weight and the child policy.
    39  type Target struct {
    40  	// Weight is the weight of the child policy.
    41  	Weight uint32 `json:"weight,omitempty"`
    42  	// ChildPolicy is the child policy and it's config.
    43  	ChildPolicy *internalserviceconfig.BalancerConfig `json:"childPolicy,omitempty"`
    44  }
    45  
    46  // LBConfig is the balancer config for weighted_target.
    47  type TargetLBConfig struct {
    48  	serviceconfig.LoadBalancingConfig `json:"-"`
    49  
    50  	Targets map[string]Target `json:"targets,omitempty"`
    51  }
    52  
    53  func parseTargetConfig(c json.RawMessage) (*LBConfig, error) {
    54  	var cfg LBConfig
    55  	if err := json.Unmarshal(c, &cfg); err != nil {
    56  		return nil, err
    57  	}
    58  	return &cfg, nil
    59  }