mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-26 16:20:28 +00:00
128 lines
3.6 KiB
Go
128 lines
3.6 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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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 cephfs
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import (
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"k8s.io/klog"
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"github.com/container-storage-interface/spec/lib/go/csi"
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"github.com/kubernetes-csi/drivers/pkg/csi-common"
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"github.com/ceph/ceph-csi/pkg/util"
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)
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const (
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// PluginFolder defines the location of ceph plugin
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PluginFolder = "/var/lib/kubelet/plugins/csi-cephfsplugin"
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// version of ceph driver
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version = "1.0.0"
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)
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// Driver contains the default identity,node and controller struct
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type Driver struct {
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cd *csicommon.CSIDriver
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is *IdentityServer
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ns *NodeServer
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cs *ControllerServer
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}
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var (
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// DefaultVolumeMounter for mounting volumes
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DefaultVolumeMounter string
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)
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// NewDriver returns new ceph driver
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func NewDriver() *Driver {
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return &Driver{}
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}
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// NewIdentityServer initialize a identity server for ceph CSI driver
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func NewIdentityServer(d *csicommon.CSIDriver) *IdentityServer {
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return &IdentityServer{
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DefaultIdentityServer: csicommon.NewDefaultIdentityServer(d),
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}
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}
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// NewControllerServer initialize a controller server for ceph CSI driver
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func NewControllerServer(d *csicommon.CSIDriver, cachePersister util.CachePersister) *ControllerServer {
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return &ControllerServer{
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DefaultControllerServer: csicommon.NewDefaultControllerServer(d),
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MetadataStore: cachePersister,
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}
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}
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// NewNodeServer initialize a node server for ceph CSI driver.
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func NewNodeServer(d *csicommon.CSIDriver) *NodeServer {
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return &NodeServer{
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DefaultNodeServer: csicommon.NewDefaultNodeServer(d),
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}
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}
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// Run start a non-blocking grpc controller,node and identityserver for
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// ceph CSI driver which can serve multiple parallel requests
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func (fs *Driver) Run(driverName, nodeID, endpoint, volumeMounter string, cachePersister util.CachePersister) {
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klog.Infof("Driver: %v version: %v", driverName, version)
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// Configuration
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if err := loadAvailableMounters(); err != nil {
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klog.Fatalf("cephfs: failed to load ceph mounters: %v", err)
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}
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if volumeMounter != "" {
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if err := validateMounter(volumeMounter); err != nil {
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klog.Fatalln(err)
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} else {
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DefaultVolumeMounter = volumeMounter
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}
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} else {
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// Pick the first available mounter as the default one.
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// The choice is biased towards "fuse" in case both
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// ceph fuse and kernel mounters are available.
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DefaultVolumeMounter = availableMounters[0]
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}
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klog.Infof("cephfs: setting default volume mounter to %s", DefaultVolumeMounter)
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// Initialize default library driver
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fs.cd = csicommon.NewCSIDriver(driverName, version, nodeID)
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if fs.cd == nil {
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klog.Fatalln("Failed to initialize CSI driver")
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}
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fs.cd.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
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csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
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})
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fs.cd.AddVolumeCapabilityAccessModes([]csi.VolumeCapability_AccessMode_Mode{
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csi.VolumeCapability_AccessMode_MULTI_NODE_MULTI_WRITER,
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})
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// Create gRPC servers
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fs.is = NewIdentityServer(fs.cd)
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fs.ns = NewNodeServer(fs.cd)
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fs.cs = NewControllerServer(fs.cd, cachePersister)
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server := csicommon.NewNonBlockingGRPCServer()
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server.Start(endpoint, fs.is, fs.cs, fs.ns)
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server.Wait()
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}
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