-
Notifications
You must be signed in to change notification settings - Fork 669
/
health.go
37 lines (33 loc) · 1.19 KB
/
health.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
// Copyright Project Contour 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 health provides a health check service.
package health
import (
"fmt"
"net/http"
"k8s.io/client-go/kubernetes"
)
// Handler returns a http Handler for a health endpoint.
func Handler(client *kubernetes.Clientset) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
// Try and lookup Kubernetes server version as a quick and dirty check
_, err := client.ServerVersion()
if err != nil {
msg := fmt.Sprintf("Failed Kubernetes Check: %v", err)
http.Error(w, msg, http.StatusServiceUnavailable)
return
}
w.WriteHeader(http.StatusOK)
fmt.Fprintln(w, "OK")
})
}