sslobodr | d046be8 | 2019-01-16 10:02:22 -0500 | [diff] [blame] | 1 | // Copyright 2017 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 grpcproxy |
| 16 | |
| 17 | import ( |
| 18 | "context" |
| 19 | "net/http" |
| 20 | "time" |
| 21 | |
| 22 | "github.com/coreos/etcd/clientv3" |
| 23 | "github.com/coreos/etcd/etcdserver/api/etcdhttp" |
| 24 | "github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes" |
| 25 | ) |
| 26 | |
| 27 | // HandleHealth registers health handler on '/health'. |
| 28 | func HandleHealth(mux *http.ServeMux, c *clientv3.Client) { |
| 29 | mux.Handle(etcdhttp.PathHealth, etcdhttp.NewHealthHandler(func() etcdhttp.Health { return checkHealth(c) })) |
| 30 | } |
| 31 | |
| 32 | func checkHealth(c *clientv3.Client) etcdhttp.Health { |
| 33 | h := etcdhttp.Health{Health: "false"} |
| 34 | ctx, cancel := context.WithTimeout(c.Ctx(), time.Second) |
| 35 | _, err := c.Get(ctx, "a") |
| 36 | cancel() |
| 37 | if err == nil || err == rpctypes.ErrPermissionDenied { |
| 38 | h.Health = "true" |
| 39 | } |
| 40 | return h |
| 41 | } |