mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-11 22:10:11 +01:00
9f5cf445df
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>
104 lines
2.8 KiB
Go
104 lines
2.8 KiB
Go
/*
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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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"github.com/Sirupsen/logrus"
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"github.com/container-storage-interface/spec/lib/go/csi"
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config "github.com/openebs/zfs-localpv/pkg/config"
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)
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// volume can only be published once as
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// read/write on a single node, at any
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// given time
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var supportedAccessMode = &csi.VolumeCapability_AccessMode{
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Mode: csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER,
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}
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// TODO check if this can be renamed to Base
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//
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// CSIDriver defines a common data structure
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// for drivers
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type CSIDriver struct {
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// TODO change the field names to make it
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// readable
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config *config.Config
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ids csi.IdentityServer
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ns csi.NodeServer
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cs csi.ControllerServer
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cap []*csi.VolumeCapability_AccessMode
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}
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// GetVolumeCapabilityAccessModes fetches the access
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// modes on which the volume can be exposed
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func GetVolumeCapabilityAccessModes() []*csi.VolumeCapability_AccessMode {
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supported := []csi.VolumeCapability_AccessMode_Mode{
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csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER,
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}
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var vcams []*csi.VolumeCapability_AccessMode
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for _, vcam := range supported {
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logrus.Infof("enabling volume access mode: %s", vcam.String())
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vcams = append(vcams, newVolumeCapabilityAccessMode(vcam))
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}
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return vcams
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}
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func newVolumeCapabilityAccessMode(mode csi.VolumeCapability_AccessMode_Mode) *csi.VolumeCapability_AccessMode {
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return &csi.VolumeCapability_AccessMode{Mode: mode}
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}
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// New returns a new driver instance
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func New(config *config.Config) *CSIDriver {
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driver := &CSIDriver{
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config: config,
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cap: GetVolumeCapabilityAccessModes(),
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}
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switch config.PluginType {
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case "controller":
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driver.cs = NewController(driver)
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case "agent":
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// Start monitor goroutine to monitor the
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// ZfsVolume CR. If there is any event
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// related to the volume like destroy or
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// property change, handle it accordingly.
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driver.ns = NewNode(driver)
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}
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// Identity server is common to both node and
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// controller, it is required to register,
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// share capabilities and probe the corresponding
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// driver
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driver.ids = NewIdentity(driver)
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return driver
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}
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// Run starts the CSI plugin by communicating
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// over the given endpoint
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func (d *CSIDriver) Run() error {
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// Initialize and start listening on grpc server
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s := NewNonBlockingGRPCServer(d.config.Endpoint, d.ids, d.cs, d.ns)
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s.Start()
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s.Wait()
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return nil
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}
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