| // Copyright 2017 The etcd 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 grpcproxy |
| |
| import ( |
| "context" |
| "net/http" |
| "time" |
| |
| "github.com/coreos/etcd/clientv3" |
| "github.com/coreos/etcd/etcdserver/api/etcdhttp" |
| "github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes" |
| ) |
| |
| // HandleHealth registers health handler on '/health'. |
| func HandleHealth(mux *http.ServeMux, c *clientv3.Client) { |
| mux.Handle(etcdhttp.PathHealth, etcdhttp.NewHealthHandler(func() etcdhttp.Health { return checkHealth(c) })) |
| } |
| |
| func checkHealth(c *clientv3.Client) etcdhttp.Health { |
| h := etcdhttp.Health{Health: "false"} |
| ctx, cancel := context.WithTimeout(c.Ctx(), time.Second) |
| _, err := c.Get(ctx, "a") |
| cancel() |
| if err == nil || err == rpctypes.ErrPermissionDenied { |
| h.Health = "true" |
| } |
| return h |
| } |