1/* 2 * 3 * Copyright 2020 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * 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 19package lrs 20 21import ( 22 "encoding/json" 23 "fmt" 24 25 internalserviceconfig "google.golang.org/grpc/internal/serviceconfig" 26 "google.golang.org/grpc/serviceconfig" 27 "google.golang.org/grpc/xds/internal" 28) 29 30// LBConfig is the balancer config for lrs balancer. 31type LBConfig struct { 32 serviceconfig.LoadBalancingConfig `json:"-"` 33 34 ClusterName string `json:"clusterName,omitempty"` 35 EDSServiceName string `json:"edsServiceName,omitempty"` 36 LoadReportingServerName string `json:"lrsLoadReportingServerName,omitempty"` 37 Locality *internal.LocalityID `json:"locality,omitempty"` 38 ChildPolicy *internalserviceconfig.BalancerConfig `json:"childPolicy,omitempty"` 39} 40 41func parseConfig(c json.RawMessage) (*LBConfig, error) { 42 var cfg LBConfig 43 if err := json.Unmarshal(c, &cfg); err != nil { 44 return nil, err 45 } 46 if cfg.ClusterName == "" { 47 return nil, fmt.Errorf("required ClusterName is not set in %+v", cfg) 48 } 49 if cfg.Locality == nil { 50 return nil, fmt.Errorf("required Locality is not set in %+v", cfg) 51 } 52 return &cfg, nil 53} 54