| Holger Hildebrandt | fa07499 | 2020-03-27 15:42:06 +0000 | [diff] [blame] | 1 | // Copyright 2018 The etcd Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package picker |
| 16 | |
| 17 | import ( |
| 18 | "context" |
| 19 | |
| 20 | "google.golang.org/grpc/balancer" |
| 21 | ) |
| 22 | |
| 23 | // NewErr returns a picker that always returns err on "Pick". |
| 24 | func NewErr(err error) Picker { |
| 25 | return &errPicker{p: Error, err: err} |
| 26 | } |
| 27 | |
| 28 | type errPicker struct { |
| 29 | p Policy |
| 30 | err error |
| 31 | } |
| 32 | |
| 33 | func (ep *errPicker) String() string { |
| 34 | return ep.p.String() |
| 35 | } |
| 36 | |
| 37 | func (ep *errPicker) Pick(context.Context, balancer.PickOptions) (balancer.SubConn, func(balancer.DoneInfo), error) { |
| 38 | return nil, nil, ep.err |
| 39 | } |