forked from gardener/gardener
/
healthz.go
45 lines (41 loc) · 1.54 KB
/
healthz.go
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// Copyright (c) 2020 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 healthz
import (
"net/http"
)
// Manager is an interface for health managers.
type Manager interface {
// Name returns the name of the health manager.
Name() string
// Start starts the health manager.
Start()
// Stop stops the health manager.
Stop()
// Get returns the current health status.
Get() bool
// Set updates the current health status with the given value.
Set(bool)
}
// HandlerFunc returns a HTTP handler that responds with 200 OK status code if the given health manager returns true,
// otherwise 500 Internal Server Error status code will be returned.
func HandlerFunc(h Manager) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
if !h.Get() {
w.WriteHeader(http.StatusInternalServerError)
} else {
w.WriteHeader(http.StatusOK)
}
}
}