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4895d708b4
following ControllerExpandVolume
in c6dbba7cde,
which expands the disk at e.g. a cloud vendor,
the controller plugin may say that we also need
to issue NodeExpandVolume for the node plugin to
make the new disk space available to task(s) that
have claims on the volume by e.g. expanding
the filesystem on the node.
csi spec:
https://github.com/container-storage-interface/spec/blob/c918b7f/spec.md#nodeexpandvolume
80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: BUSL-1.1
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package csimanager
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import (
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"context"
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"strings"
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"github.com/hashicorp/nomad/client/pluginmanager"
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"github.com/hashicorp/nomad/nomad/structs"
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"github.com/hashicorp/nomad/plugins/csi"
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)
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type MountInfo struct {
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Source string
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IsDevice bool
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}
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func (mi *MountInfo) Copy() *MountInfo {
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if mi == nil {
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return nil
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}
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nmi := new(MountInfo)
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*nmi = *mi
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return nmi
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}
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type UsageOptions struct {
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ReadOnly bool
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AttachmentMode structs.CSIVolumeAttachmentMode
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AccessMode structs.CSIVolumeAccessMode
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MountOptions *structs.CSIMountOptions
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}
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// ToFS is used by a VolumeManager to construct the path to where a volume
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// should be staged/published. It should always return a string that is easy
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// enough to manage as a filesystem path segment (e.g avoid starting the string
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// with a special character).
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func (u *UsageOptions) ToFS() string {
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var sb strings.Builder
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if u.ReadOnly {
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sb.WriteString("ro-")
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} else {
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sb.WriteString("rw-")
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}
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sb.WriteString(string(u.AttachmentMode))
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sb.WriteString("-")
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sb.WriteString(string(u.AccessMode))
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return sb.String()
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}
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type VolumeManager interface {
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MountVolume(ctx context.Context, vol *structs.CSIVolume, alloc *structs.Allocation, usageOpts *UsageOptions, publishContext map[string]string) (*MountInfo, error)
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UnmountVolume(ctx context.Context, volID, remoteID, allocID string, usageOpts *UsageOptions) error
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HasMount(ctx context.Context, mountInfo *MountInfo) (bool, error)
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ExpandVolume(ctx context.Context, volID, remoteID, allocID string, usageOpts *UsageOptions, capacity *csi.CapacityRange) (int64, error)
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ExternalID() string
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}
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type Manager interface {
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// PluginManager returns a PluginManager for use by the node fingerprinter.
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PluginManager() pluginmanager.PluginManager
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// WaitForPlugin waits for the plugin to become available,
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// or until its context is canceled or times out.
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WaitForPlugin(ctx context.Context, pluginType, pluginID string) error
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// ManagerForPlugin returns a VolumeManager for the plugin ID associated
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// with the volume. Returns an error if this plugin isn't registered.
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ManagerForPlugin(ctx context.Context, pluginID string) (VolumeManager, error)
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// Shutdown shuts down the Manager and unmounts any locally attached volumes.
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Shutdown()
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}
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