| /* |
| * |
| * 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. |
| // |
| // This struct should only be used as map keys. Use the proto message directly |
| // in all other places. |
| // |
| type LocalityID struct { |
| Region string |
| Zone string |
| SubZone string |
| } |
| |
| func (l LocalityID) String() string { |
| return fmt.Sprintf("%s-%s-%s", l.Region, l.Zone, l.SubZone) |
| } |