forked from rook/rook
Alexander Trost
2873558ecd
Added unit test for monNotFound or recreation/failover of non existant mons
110 lines
3.1 KiB
Go
110 lines
3.1 KiB
Go
/*
|
|
Copyright 2016 The Rook Authors. All rights reserved.
|
|
|
|
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 api
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
|
|
"github.com/rook/rook/pkg/ceph/mon"
|
|
"github.com/rook/rook/pkg/clusterd"
|
|
monop "github.com/rook/rook/pkg/operator/mon"
|
|
"k8s.io/api/core/v1"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/fields"
|
|
"k8s.io/apimachinery/pkg/watch"
|
|
"k8s.io/kubernetes/pkg/api"
|
|
)
|
|
|
|
const (
|
|
registerMetricsRetryMs = 5000
|
|
)
|
|
|
|
type Config struct {
|
|
context *clusterd.Context
|
|
port int
|
|
clusterInfo *mon.ClusterInfo
|
|
namespace string
|
|
versionTag string
|
|
hostNetwork bool
|
|
}
|
|
|
|
func NewConfig(context *clusterd.Context, port int, clusterInfo *mon.ClusterInfo, namespace, versionTag string, hostNetwork bool) *Config {
|
|
return &Config{
|
|
context: context,
|
|
port: port,
|
|
clusterInfo: clusterInfo,
|
|
namespace: namespace,
|
|
versionTag: versionTag,
|
|
hostNetwork: hostNetwork,
|
|
}
|
|
}
|
|
|
|
func Run(context *clusterd.Context, c *Config) error {
|
|
// write the latest config to the config dir
|
|
if err := mon.GenerateAdminConnectionConfig(context, c.clusterInfo); err != nil {
|
|
return fmt.Errorf("failed to write connection config. %+v", err)
|
|
}
|
|
|
|
go WatchMonConfig(context, c)
|
|
ServeRoutes(context, c)
|
|
return nil
|
|
}
|
|
|
|
func WatchMonConfig(context *clusterd.Context, c *Config) {
|
|
opts := metav1.ListOptions{
|
|
FieldSelector: fields.OneTermEqualSelector(api.ObjectNameField, monop.EndpointConfigMapName).String(),
|
|
}
|
|
w, err := context.Clientset.Core().ConfigMaps(c.namespace).Watch(opts)
|
|
if err != nil {
|
|
logger.Errorf("API server init error: %+v", err)
|
|
}
|
|
defer w.Stop()
|
|
|
|
for {
|
|
e := <-w.ResultChan()
|
|
if e.Type == watch.Modified {
|
|
// "unmarshal" object into configmap and set new endpoints
|
|
monEndpoints := e.Object.(*v1.ConfigMap)
|
|
c.clusterInfo.Monitors = mon.ParseMonEndpoints(monEndpoints.Data[monop.EndpointDataKey])
|
|
|
|
// write the latest config to the config dir
|
|
if err := mon.GenerateAdminConnectionConfig(context, c.clusterInfo); err != nil {
|
|
logger.Errorf("failed to write connection config. %+v", err)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func ServeRoutes(context *clusterd.Context, c *Config) {
|
|
// set up routes and start HTTP server for REST API
|
|
h := newHandler(context, c)
|
|
|
|
// register metrics collection in a goroutine so it does not block the start up of the API server.
|
|
go func() {
|
|
if err := h.RegisterMetrics(registerMetricsRetryMs); err != nil {
|
|
logger.Errorf("API server init error: %+v", err)
|
|
}
|
|
}()
|
|
defer h.Shutdown()
|
|
|
|
r := newRouter(h.GetRoutes())
|
|
if err := http.ListenAndServe(fmt.Sprintf(":%d", c.port), r); err != nil {
|
|
logger.Errorf("API server error: %+v", err)
|
|
}
|
|
}
|