/
internal.go
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/
internal.go
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/*
*
* Copyright 2019 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 internal contains functions/structs shared by xds
// balancers/resolvers.
package internal
import (
"fmt"
)
type clientID string
// XDSClientID is the attributes key used to pass the address of the xdsClient
// object shared between the resolver and the balancer. The xdsClient object is
// created by the resolver and passed to the balancer.
const XDSClientID = clientID("xdsClientID")
// LocalityID is xds.Locality without XXX fields, so it can be used as map
// keys.
//
// xds.Locality cannot be map keys because one of the XXX fields is a slice.
type LocalityID struct {
Region string `json:"region,omitempty"`
Zone string `json:"zone,omitempty"`
SubZone string `json:"subZone,omitempty"`
}
func (l LocalityID) String() string {
return fmt.Sprintf("%s-%s-%s", l.Region, l.Zone, l.SubZone)
}