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nfs: add basic provisioner with create/delete procedures

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These NFS Controller and Identity servers are the base for the new
provisioner. The functionality is currently extremely limited, follow-up
PRs will implement various CSI procedures.

CreateVolume is implemented with the bare minimum. This makes it
possible to create a volume, and mount it with the
kubernetes-csi/csi-driver-nfs NodePlugin.

DeleteVolume unexports the volume from the Ceph managed NFS-Ganesha
service. In case the Ceph cluster provides multiple NFS-Ganesha
deployments, things might not work as expected. This is going to be
addressed in follow-up improvements.

Lots of TODO comments need to be resolved before this can be declared
"production ready". Unit- and e2e-tests are missing as well.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
This commit is contained in:
Niels de Vos
2022-02-25 13:16:15 +01:00
committed by mergify[bot]
parent 87f87141be
commit 6d83df9cc9
4 changed files with 465 additions and 0 deletions
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55
internal/nfs/identity/identityserver.go Normal file
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/*
Copyright 2022 The Ceph-CSI 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 identity
import (
"context"
csicommon "github.com/ceph/ceph-csi/internal/csi-common"
"github.com/container-storage-interface/spec/lib/go/csi"
)
// Server struct of ceph CSI driver with supported methods of CSI identity
// server spec.
type Server struct {
*csicommon.DefaultIdentityServer
}
// NewIdentityServer initialize a identity server for ceph CSI driver.
func NewIdentityServer(d *csicommon.CSIDriver) *Server {
return &Server{
DefaultIdentityServer: csicommon.NewDefaultIdentityServer(d),
}
}
// GetPluginCapabilities returns available capabilities of the ceph driver.
func (is *Server) GetPluginCapabilities(
ctx context.Context,
req *csi.GetPluginCapabilitiesRequest) (*csi.GetPluginCapabilitiesResponse, error) {
return &csi.GetPluginCapabilitiesResponse{
Capabilities: []*csi.PluginCapability{
{
Type: &csi.PluginCapability_Service_{
Service: &csi.PluginCapability_Service{
Type: csi.PluginCapability_Service_CONTROLLER_SERVICE,
},
},
},
},
}, nil
}