forked from rook/rook
125 lines
3.9 KiB
Go
125 lines
3.9 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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*/
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// Package operator to manage Kubernetes storage.
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package operator
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import (
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"fmt"
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"os"
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"os/signal"
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"syscall"
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"github.com/coreos/pkg/capnslog"
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opkit "github.com/rook/operator-kit"
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"github.com/rook/rook/pkg/clusterd"
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"github.com/rook/rook/pkg/daemon/agent/flexvolume/attachment"
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"github.com/rook/rook/pkg/operator/agent"
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"github.com/rook/rook/pkg/operator/cluster"
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"github.com/rook/rook/pkg/operator/discover"
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"github.com/rook/rook/pkg/operator/file"
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"github.com/rook/rook/pkg/operator/k8sutil"
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"github.com/rook/rook/pkg/operator/object"
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"github.com/rook/rook/pkg/operator/pool"
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"github.com/rook/rook/pkg/operator/provisioner"
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"github.com/rook/rook/pkg/operator/provisioner/controller"
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"k8s.io/api/core/v1"
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)
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// volume provisioner constant
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const (
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provisionerName = "rook.io/block"
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)
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var logger = capnslog.NewPackageLogger("github.com/rook/rook", "operator")
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// Operator type for managing storage
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type Operator struct {
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context *clusterd.Context
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resources []opkit.CustomResource
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rookImage string
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// The custom resource that is global to the kubernetes cluster.
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// The cluster is global because you create multiple clusters in k8s
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clusterController *cluster.ClusterController
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volumeProvisioner controller.Provisioner
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}
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// New creates an operator instance
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func New(context *clusterd.Context, volumeAttachmentWrapper attachment.Attachment, rookImage string) *Operator {
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clusterController := cluster.NewClusterController(context, rookImage, volumeAttachmentWrapper)
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volumeProvisioner := provisioner.New(context)
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schemes := []opkit.CustomResource{cluster.ClusterResource, pool.PoolResource, object.ObjectStoreResource,
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file.FilesystemResource, attachment.VolumeAttachmentResource}
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return &Operator{
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context: context,
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clusterController: clusterController,
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resources: schemes,
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volumeProvisioner: volumeProvisioner,
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rookImage: rookImage,
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}
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}
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// Run the operator instance
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func (o *Operator) Run() error {
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namespace := os.Getenv(k8sutil.PodNamespaceEnvVar)
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if namespace == "" {
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return fmt.Errorf("Rook operator namespace is not provided. Expose it via downward API in the rook operator manifest file using environment variable %s", k8sutil.PodNamespaceEnvVar)
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}
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rookAgent := agent.New(o.context.Clientset)
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if err := rookAgent.Start(namespace, o.rookImage); err != nil {
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return fmt.Errorf("Error starting agent daemonset: %v", err)
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}
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rookDiscover := discover.New(o.context.Clientset)
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if err := rookDiscover.Start(namespace, o.rookImage); err != nil {
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return fmt.Errorf("Error starting device discovery daemonset: %v", err)
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}
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signalChan := make(chan os.Signal, 1)
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stopChan := make(chan struct{})
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signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
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// Run volume provisioner
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serverVersion, err := o.context.Clientset.Discovery().ServerVersion()
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if err != nil {
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return fmt.Errorf("Error getting server version: %v", err)
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}
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pc := controller.NewProvisionController(
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o.context.Clientset,
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provisionerName,
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o.volumeProvisioner,
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serverVersion.GitVersion,
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)
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go pc.Run(stopChan)
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logger.Infof("rook-provisioner started")
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// watch for changes to the rook clusters
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o.clusterController.StartWatch(v1.NamespaceAll, stopChan)
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for {
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select {
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case <-signalChan:
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logger.Infof("shutdown signal received, exiting...")
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close(stopChan)
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return nil
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}
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}
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}
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