forked from rook/rook
137 lines
3.1 KiB
Go
137 lines
3.1 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Some of the code below came from https://github.com/coreos/etcd-operator
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which also has the apache 2.0 license.
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*/
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package operator
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import (
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"errors"
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"fmt"
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"net/http"
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"time"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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"github.com/rook/rook/pkg/cephmgr/client"
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"k8s.io/client-go/pkg/api"
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"k8s.io/client-go/pkg/api/unversioned"
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"k8s.io/client-go/pkg/runtime"
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"k8s.io/client-go/pkg/runtime/serializer"
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)
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const (
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initRetryDelay = 10 * time.Second
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)
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var (
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ErrVersionOutdated = errors.New("requested version is outdated in apiserver")
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)
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type context struct {
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clientset kubernetes.Interface
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namespace string
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retryDelay int
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maxRetries int
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masterHost string
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kubeHttpCli *http.Client
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factory client.ConnectionFactory
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}
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type Operator struct {
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context *context
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tprs []TPR
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}
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func New(host, namespace string, factory client.ConnectionFactory, clientset kubernetes.Interface) *Operator {
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context := &context{
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namespace: namespace,
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masterHost: host,
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factory: factory,
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clientset: clientset,
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retryDelay: 3,
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maxRetries: 30,
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}
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return &Operator{
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context: context,
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tprs: []TPR{newClusterTPR(context), newPoolTPR(context)},
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}
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}
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func (o *Operator) Run() error {
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for {
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err := o.initResources()
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if err == nil {
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break
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}
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logger.Errorf("failed to init resources. %+v. retrying...", err)
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<-time.After(initRetryDelay)
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}
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// watch for changes to the rook clusters
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for _, tpr := range o.tprs {
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if err := tpr.Watch(); err != nil {
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return fmt.Errorf("failed to watch tpr %s. %+v", tpr.Name(), err)
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}
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}
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return nil
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}
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func (o *Operator) initResources() error {
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httpCli, err := newHttpClient()
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if err != nil {
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return fmt.Errorf("failed to get tpr client. %+v", err)
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}
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o.context.kubeHttpCli = httpCli.Client
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err = createTPRs(o.context, o.tprs)
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if err != nil {
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return fmt.Errorf("failed to create TPR. %+v", err)
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}
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for _, tpr := range o.tprs {
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if err := tpr.Load(); err != nil {
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return fmt.Errorf("failed to load tpr %s. %+v", tpr.Name(), err)
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}
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}
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return nil
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}
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func newHttpClient() (*rest.RESTClient, error) {
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config, err := rest.InClusterConfig()
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if err != nil {
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return nil, err
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}
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config.GroupVersion = &unversioned.GroupVersion{
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Group: tprGroup,
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Version: tprVersion,
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}
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config.APIPath = "/apis"
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config.ContentType = runtime.ContentTypeJSON
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config.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: api.Codecs}
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restcli, err := rest.RESTClientFor(config)
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if err != nil {
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return nil, err
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}
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return restcli, nil
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}
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