mirror of https://github.com/k3s-io/k3s
119 lines
3.0 KiB
Go
119 lines
3.0 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes 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 componentstatus
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/kubernetes/pkg/api"
|
|
genericapirequest "k8s.io/kubernetes/pkg/genericapiserver/api/request"
|
|
"k8s.io/kubernetes/pkg/probe"
|
|
httpprober "k8s.io/kubernetes/pkg/probe/http"
|
|
)
|
|
|
|
type REST struct {
|
|
GetServersToValidate func() map[string]Server
|
|
prober httpprober.HTTPProber
|
|
}
|
|
|
|
// NewStorage returns a new REST.
|
|
func NewStorage(serverRetriever func() map[string]Server) *REST {
|
|
return &REST{
|
|
GetServersToValidate: serverRetriever,
|
|
prober: httpprober.New(),
|
|
}
|
|
}
|
|
|
|
func (rs *REST) New() runtime.Object {
|
|
return &api.ComponentStatus{}
|
|
}
|
|
|
|
func (rs *REST) NewList() runtime.Object {
|
|
return &api.ComponentStatusList{}
|
|
}
|
|
|
|
// Returns the list of component status. Note that the label and field are both ignored.
|
|
// Note that this call doesn't support labels or selectors.
|
|
func (rs *REST) List(ctx genericapirequest.Context, options *api.ListOptions) (runtime.Object, error) {
|
|
servers := rs.GetServersToValidate()
|
|
|
|
wait := sync.WaitGroup{}
|
|
wait.Add(len(servers))
|
|
statuses := make(chan api.ComponentStatus, len(servers))
|
|
for k, v := range servers {
|
|
go func(name string, server Server) {
|
|
defer wait.Done()
|
|
status := rs.getComponentStatus(name, server)
|
|
statuses <- *status
|
|
}(k, v)
|
|
}
|
|
wait.Wait()
|
|
close(statuses)
|
|
|
|
reply := []api.ComponentStatus{}
|
|
for status := range statuses {
|
|
reply = append(reply, status)
|
|
}
|
|
return &api.ComponentStatusList{Items: reply}, nil
|
|
}
|
|
|
|
func (rs *REST) Get(ctx genericapirequest.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
|
|
servers := rs.GetServersToValidate()
|
|
|
|
if server, ok := servers[name]; !ok {
|
|
return nil, fmt.Errorf("Component not found: %s", name)
|
|
} else {
|
|
return rs.getComponentStatus(name, server), nil
|
|
}
|
|
}
|
|
|
|
func ToConditionStatus(s probe.Result) api.ConditionStatus {
|
|
switch s {
|
|
case probe.Success:
|
|
return api.ConditionTrue
|
|
case probe.Failure:
|
|
return api.ConditionFalse
|
|
default:
|
|
return api.ConditionUnknown
|
|
}
|
|
}
|
|
|
|
func (rs *REST) getComponentStatus(name string, server Server) *api.ComponentStatus {
|
|
status, msg, err := server.DoServerCheck(rs.prober)
|
|
errorMsg := ""
|
|
if err != nil {
|
|
errorMsg = err.Error()
|
|
}
|
|
|
|
c := &api.ComponentCondition{
|
|
Type: api.ComponentHealthy,
|
|
Status: ToConditionStatus(status),
|
|
Message: msg,
|
|
Error: errorMsg,
|
|
}
|
|
|
|
retVal := &api.ComponentStatus{
|
|
Conditions: []api.ComponentCondition{*c},
|
|
}
|
|
retVal.Name = name
|
|
|
|
return retVal
|
|
}
|