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 30type lbConfig struct { 31 serviceconfig.LoadBalancingConfig 32 ClusterName string 33 EdsServiceName string 34 LrsLoadReportingServerName string 35 Locality *internal.LocalityID 36 ChildPolicy *internalserviceconfig.BalancerConfig 37} 38 39func parseConfig(c json.RawMessage) (*lbConfig, error) { 40 var cfg lbConfig 41 if err := json.Unmarshal(c, &cfg); err != nil { 42 return nil, err 43 } 44 if cfg.ClusterName == "" { 45 return nil, fmt.Errorf("required ClusterName is not set in %+v", cfg) 46 } 47 if cfg.LrsLoadReportingServerName == "" { 48 return nil, fmt.Errorf("required LrsLoadReportingServerName is not set in %+v", cfg) 49 } 50 if cfg.Locality == nil { 51 return nil, fmt.Errorf("required Locality is not set in %+v", cfg) 52 } 53 return &cfg, nil 54} 55