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config.go
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config.go
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/*
*
* 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 clusterimpl
import (
"encoding/json"
internalserviceconfig "google.golang.org/grpc/internal/serviceconfig"
"google.golang.org/grpc/serviceconfig"
"google.golang.org/grpc/xds/internal/xdsclient/bootstrap"
)
// DropConfig contains the category, and drop ratio.
type DropConfig struct {
Category string
RequestsPerMillion uint32
}
// LBConfig is the balancer config for cluster_impl balancer.
type LBConfig struct {
serviceconfig.LoadBalancingConfig `json:"-"`
Cluster string `json:"cluster,omitempty"`
EDSServiceName string `json:"edsServiceName,omitempty"`
// LoadReportingServer is the LRS server to send load reports to. If not
// present, load reporting will be disabled.
LoadReportingServer *bootstrap.ServerConfig `json:"lrsLoadReportingServer,omitempty"`
MaxConcurrentRequests *uint32 `json:"maxConcurrentRequests,omitempty"`
DropCategories []DropConfig `json:"dropCategories,omitempty"`
ChildPolicy *internalserviceconfig.BalancerConfig `json:"childPolicy,omitempty"`
}
func parseConfig(c json.RawMessage) (*LBConfig, error) {
var cfg LBConfig
if err := json.Unmarshal(c, &cfg); err != nil {
return nil, err
}
return &cfg, nil
}
func equalDropCategories(a, b []DropConfig) bool {
if len(a) != len(b) {
return false
}
for i := range a {
if a[i] != b[i] {
return false
}
}
return true
}