mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-11 22:10:11 +01:00
feat(zfs-localpv): initial commit
provisioning and deprovisioning of the volumes on the node where zfs pool has already been setup. Pool name and the volume parameters has to be given in storage class which will be used to provision the volume. Signed-off-by: Pawan <pawan@mayadata.io>
This commit is contained in:
Pawan
Kiran Mova
parent
485e2a21f0
commit
9f5cf445df
46 changed files with 6339 additions and 0 deletions
375
pkg/driver/controller.go
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375
pkg/driver/controller.go
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@ -0,0 +1,375 @@
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/*
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Copyright © 2019 The OpenEBS 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 driver
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import (
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"fmt"
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"strconv"
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"github.com/Sirupsen/logrus"
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"github.com/container-storage-interface/spec/lib/go/csi"
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"github.com/openebs/zfs-localpv/pkg/builder"
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errors "github.com/openebs/zfs-localpv/pkg/common/errors"
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csipayload "github.com/openebs/zfs-localpv/pkg/response"
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zvol "github.com/openebs/zfs-localpv/pkg/zfs"
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"golang.org/x/net/context"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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)
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// controller is the server implementation
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// for CSI Controller
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type controller struct {
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driver *CSIDriver
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capabilities []*csi.ControllerServiceCapability
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}
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// NewController returns a new instance
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// of CSI controller
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func NewController(d *CSIDriver) csi.ControllerServer {
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return &controller{
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driver: d,
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capabilities: newControllerCapabilities(),
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}
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}
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// SupportedVolumeCapabilityAccessModes contains the list of supported access
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// modes for the volume
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var SupportedVolumeCapabilityAccessModes = []*csi.VolumeCapability_AccessMode{
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&csi.VolumeCapability_AccessMode{
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Mode: csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER,
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},
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}
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// CreateVolume provisions a volume
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func (cs *controller) CreateVolume(
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ctx context.Context,
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req *csi.CreateVolumeRequest,
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) (*csi.CreateVolumeResponse, error) {
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logrus.Infof("received request to create volume {%s} vol{%v}", req.GetName(), req)
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var err error
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if err = cs.validateVolumeCreateReq(req); err != nil {
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return nil, err
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}
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volName := req.GetName()
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size := req.GetCapacityRange().RequiredBytes
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bs := req.GetParameters()["blocksize"]
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compression := req.GetParameters()["compression"]
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dedup := req.GetParameters()["dedup"]
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pool := req.GetParameters()["poolname"]
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tp := req.GetParameters()["thinprovision"]
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volObj, err := builder.NewBuilder().
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WithName(volName).
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WithCapacity(strconv.FormatInt(int64(size), 10)).
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WithBlockSize(bs).
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WithPoolName(pool).
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WithDedup(dedup).
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WithThinProv(tp).
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WithCompression(compression).Build()
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if err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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err = zvol.ProvisionVolume(size, volObj)
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if err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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return csipayload.NewCreateVolumeResponseBuilder().
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WithName(volName).
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WithCapacity(size).
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Build(), nil
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}
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// DeleteVolume deletes the specified volume
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func (cs *controller) DeleteVolume(
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ctx context.Context,
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req *csi.DeleteVolumeRequest) (*csi.DeleteVolumeResponse, error) {
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logrus.Infof("received request to delete volume {%s}", req.VolumeId)
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var (
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err error
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)
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if err = cs.validateDeleteVolumeReq(req); err != nil {
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return nil, err
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}
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volumeID := req.GetVolumeId()
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// verify if the volume has already been deleted
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vol, err := zvol.GetVolume(volumeID)
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if vol != nil && vol.DeletionTimestamp != nil {
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goto deleteResponse
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}
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// Delete the corresponding ZV CR
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err = zvol.DeleteVolume(volumeID)
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if err != nil {
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return nil, errors.Wrapf(
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err,
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"failed to handle delete volume request for {%s}",
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volumeID,
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)
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}
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deleteResponse:
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return csipayload.NewDeleteVolumeResponseBuilder().Build(), nil
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}
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// TODO Implementation will be taken up later
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// ValidateVolumeCapabilities validates the capabilities
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// required to create a new volume
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// This implements csi.ControllerServer
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func (cs *controller) ValidateVolumeCapabilities(
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ctx context.Context,
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req *csi.ValidateVolumeCapabilitiesRequest,
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) (*csi.ValidateVolumeCapabilitiesResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// ControllerGetCapabilities fetches controller capabilities
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//
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// This implements csi.ControllerServer
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func (cs *controller) ControllerGetCapabilities(
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ctx context.Context,
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req *csi.ControllerGetCapabilitiesRequest,
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) (*csi.ControllerGetCapabilitiesResponse, error) {
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resp := &csi.ControllerGetCapabilitiesResponse{
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Capabilities: cs.capabilities,
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}
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return resp, nil
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}
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// ControllerExpandVolume resizes previously provisioned volume
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//
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// This implements csi.ControllerServer
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func (cs *controller) ControllerExpandVolume(
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ctx context.Context,
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req *csi.ControllerExpandVolumeRequest,
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) (*csi.ControllerExpandVolumeResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// CreateSnapshot creates a snapshot for given volume
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//
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// This implements csi.ControllerServer
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func (cs *controller) CreateSnapshot(
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ctx context.Context,
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req *csi.CreateSnapshotRequest,
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) (*csi.CreateSnapshotResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// DeleteSnapshot deletes given snapshot
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//
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// This implements csi.ControllerServer
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func (cs *controller) DeleteSnapshot(
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ctx context.Context,
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req *csi.DeleteSnapshotRequest,
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) (*csi.DeleteSnapshotResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// ListSnapshots lists all snapshots for the
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// given volume
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//
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// This implements csi.ControllerServer
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func (cs *controller) ListSnapshots(
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ctx context.Context,
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req *csi.ListSnapshotsRequest,
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) (*csi.ListSnapshotsResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// ControllerUnpublishVolume removes a previously
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// attached volume from the given node
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//
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// This implements csi.ControllerServer
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func (cs *controller) ControllerUnpublishVolume(
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ctx context.Context,
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req *csi.ControllerUnpublishVolumeRequest,
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) (*csi.ControllerUnpublishVolumeResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// ControllerPublishVolume attaches given volume
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// at the specified node
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//
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// This implements csi.ControllerServer
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func (cs *controller) ControllerPublishVolume(
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ctx context.Context,
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req *csi.ControllerPublishVolumeRequest,
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) (*csi.ControllerPublishVolumeResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// GetCapacity return the capacity of the
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// given volume
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//
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// This implements csi.ControllerServer
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func (cs *controller) GetCapacity(
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ctx context.Context,
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req *csi.GetCapacityRequest,
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) (*csi.GetCapacityResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// ListVolumes lists all the volumes
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//
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// This implements csi.ControllerServer
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func (cs *controller) ListVolumes(
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ctx context.Context,
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req *csi.ListVolumesRequest,
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) (*csi.ListVolumesResponse, error) {
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return nil, status.Error(codes.Unimplemented, "")
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}
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// validateCapabilities validates if provided capabilities
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// are supported by this driver
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func validateCapabilities(caps []*csi.VolumeCapability) bool {
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for _, cap := range caps {
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if !IsSupportedVolumeCapabilityAccessMode(cap.AccessMode.Mode) {
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return false
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}
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}
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return true
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}
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func (cs *controller) validateDeleteVolumeReq(req *csi.DeleteVolumeRequest) error {
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volumeID := req.GetVolumeId()
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if volumeID == "" {
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return status.Error(
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codes.InvalidArgument,
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"failed to handle delete volume request: missing volume id",
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)
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}
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err := cs.validateRequest(
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csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
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)
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if err != nil {
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return errors.Wrapf(
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err,
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"failed to handle delete volume request for {%s} : validation failed",
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volumeID,
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)
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}
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return nil
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}
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// IsSupportedVolumeCapabilityAccessMode valides the requested access mode
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func IsSupportedVolumeCapabilityAccessMode(
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accessMode csi.VolumeCapability_AccessMode_Mode,
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) bool {
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for _, access := range SupportedVolumeCapabilityAccessModes {
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if accessMode == access.Mode {
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return true
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}
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}
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return false
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}
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// newControllerCapabilities returns a list
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// of this controller's capabilities
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func newControllerCapabilities() []*csi.ControllerServiceCapability {
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fromType := func(
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cap csi.ControllerServiceCapability_RPC_Type,
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) *csi.ControllerServiceCapability {
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return &csi.ControllerServiceCapability{
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Type: &csi.ControllerServiceCapability_Rpc{
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Rpc: &csi.ControllerServiceCapability_RPC{
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Type: cap,
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},
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},
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}
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}
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var capabilities []*csi.ControllerServiceCapability
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for _, cap := range []csi.ControllerServiceCapability_RPC_Type{
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csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
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} {
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capabilities = append(capabilities, fromType(cap))
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}
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return capabilities
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}
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// validateRequest validates if the requested service is
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// supported by the driver
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func (cs *controller) validateRequest(
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c csi.ControllerServiceCapability_RPC_Type,
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) error {
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for _, cap := range cs.capabilities {
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if c == cap.GetRpc().GetType() {
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return nil
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}
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}
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return status.Error(
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codes.InvalidArgument,
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fmt.Sprintf("failed to validate request: {%s} is not supported", c),
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)
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}
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func (cs *controller) validateVolumeCreateReq(req *csi.CreateVolumeRequest) error {
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err := cs.validateRequest(
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csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
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)
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if err != nil {
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return errors.Wrapf(
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err,
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"failed to handle create volume request for {%s}",
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req.GetName(),
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)
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}
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if req.GetName() == "" {
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return status.Error(
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codes.InvalidArgument,
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"failed to handle create volume request: missing volume name",
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)
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}
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volCapabilities := req.GetVolumeCapabilities()
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if volCapabilities == nil {
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return status.Error(
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codes.InvalidArgument,
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"failed to handle create volume request: missing volume capabilities",
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)
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}
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return nil
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}
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