open-nomad/command/volume_status_csi.go

284 lines
6.9 KiB
Go

package command
import (
"fmt"
"sort"
"strings"
"github.com/hashicorp/nomad/api"
"github.com/hashicorp/nomad/nomad/structs"
)
func (c *VolumeStatusCommand) csiBanner() {
if !(c.json || len(c.template) > 0) {
c.Ui.Output(c.Colorize().Color("[bold]Container Storage Interface[reset]"))
}
}
func (c *VolumeStatusCommand) csiStatus(client *api.Client, id string) int {
// Invoke list mode if no volume id
if id == "" {
return c.listVolumes(client)
}
// Prefix search for the volume
vols, _, err := client.CSIVolumes().List(&api.QueryOptions{Prefix: id})
if err != nil {
c.Ui.Error(fmt.Sprintf("Error querying volumes: %s", err))
return 1
}
if len(vols) > 1 {
out, err := c.csiFormatVolumes(vols)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error formatting: %s", err))
return 1
}
c.Ui.Error(fmt.Sprintf("Prefix matched multiple volumes\n\n%s", out))
return 1
}
if len(vols) == 0 {
c.Ui.Error(fmt.Sprintf("No volumes(s) with prefix or ID %q found", id))
return 1
}
id = vols[0].ID
// Try querying the volume
vol, _, err := client.CSIVolumes().Info(id, nil)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error querying volume: %s", err))
return 1
}
str, err := c.formatBasic(vol)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error formatting volume: %s", err))
return 1
}
c.Ui.Output(str)
return 0
}
func (c *VolumeStatusCommand) listVolumes(client *api.Client) int {
c.csiBanner()
vols, _, err := client.CSIVolumes().List(nil)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error querying volumes: %s", err))
return 1
}
if len(vols) == 0 {
// No output if we have no volumes
c.Ui.Error("No CSI volumes")
} else {
str, err := c.csiFormatVolumes(vols)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error formatting: %s", err))
return 1
}
c.Ui.Output(str)
}
if !c.verbose {
return 0
}
plugins, _, err := client.CSIPlugins().List(nil)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error querying CSI plugins: %s", err))
return 1
}
if len(plugins) == 0 {
return 0 // No more output if we have no plugins
}
var code int
q := &api.QueryOptions{PerPage: 30} // TODO: tune page size
NEXT_PLUGIN:
for _, plugin := range plugins {
if !plugin.ControllerRequired || plugin.ControllersHealthy < 1 {
continue // only controller plugins can support this query
}
for {
externalList, _, err := client.CSIVolumes().ListExternal(plugin.ID, q)
if err != nil {
c.Ui.Error(fmt.Sprintf(
"Error querying CSI external volumes for plugin %q: %s", plugin.ID, err))
// we'll stop querying this plugin, but there may be more to
// query, so report and set the error code but move on to the
// next plugin
code = 1
continue NEXT_PLUGIN
}
rows := []string{}
if len(externalList.Volumes) > 0 {
rows[0] = "External ID|Condition|Nodes"
for i, v := range externalList.Volumes {
condition := "OK"
if v.IsAbnormal {
condition = fmt.Sprintf("Abnormal (%v)", v.Status)
}
rows[i+1] = fmt.Sprintf("%s|%s|%s",
limit(v.ExternalID, c.length),
limit(condition, 20),
strings.Join(v.PublishedExternalNodeIDs, ","),
)
}
c.Ui.Output(formatList(rows))
}
q.NextToken = externalList.NextToken
if q.NextToken == "" {
break
}
// we can't know the shape of arbitrarily-sized lists of volumes,
// so break after each page
c.Ui.Output("...")
}
}
return code
}
func (c *VolumeStatusCommand) csiFormatVolumes(vols []*api.CSIVolumeListStub) (string, error) {
// Sort the output by volume id
sort.Slice(vols, func(i, j int) bool { return vols[i].ID < vols[j].ID })
if c.json || len(c.template) > 0 {
out, err := Format(c.json, c.template, vols)
if err != nil {
return "", fmt.Errorf("format error: %v", err)
}
return out, nil
}
return csiFormatSortedVolumes(vols, c.length)
}
// Format the volumes, assumes that we're already sorted by volume ID
func csiFormatSortedVolumes(vols []*api.CSIVolumeListStub, length int) (string, error) {
rows := make([]string, len(vols)+1)
rows[0] = "ID|Name|Plugin ID|Schedulable|Access Mode"
for i, v := range vols {
rows[i+1] = fmt.Sprintf("%s|%s|%s|%t|%s",
limit(v.ID, length),
v.Name,
v.PluginID,
v.Schedulable,
v.AccessMode,
)
}
return formatList(rows), nil
}
func (c *VolumeStatusCommand) formatBasic(vol *api.CSIVolume) (string, error) {
if c.json || len(c.template) > 0 {
out, err := Format(c.json, c.template, vol)
if err != nil {
return "", fmt.Errorf("format error: %v", err)
}
return out, nil
}
output := []string{
fmt.Sprintf("ID|%s", vol.ID),
fmt.Sprintf("Name|%s", vol.Name),
fmt.Sprintf("External ID|%s", vol.ExternalID),
fmt.Sprintf("Plugin ID|%s", vol.PluginID),
fmt.Sprintf("Provider|%s", vol.Provider),
fmt.Sprintf("Version|%s", vol.ProviderVersion),
fmt.Sprintf("Schedulable|%t", vol.Schedulable),
fmt.Sprintf("Controllers Healthy|%d", vol.ControllersHealthy),
fmt.Sprintf("Controllers Expected|%d", vol.ControllersExpected),
fmt.Sprintf("Nodes Healthy|%d", vol.NodesHealthy),
fmt.Sprintf("Nodes Expected|%d", vol.NodesExpected),
fmt.Sprintf("Access Mode|%s", vol.AccessMode),
fmt.Sprintf("Attachment Mode|%s", vol.AttachmentMode),
fmt.Sprintf("Mount Options|%s", csiVolMountOption(vol.MountOptions, nil)),
fmt.Sprintf("Namespace|%s", vol.Namespace),
}
// Exit early
if c.short {
return formatKV(output), nil
}
// Format the allocs
banner := c.Colorize().Color("\n[bold]Allocations[reset]")
allocs := formatAllocListStubs(vol.Allocations, c.verbose, c.length)
full := []string{formatKV(output), banner, allocs}
return strings.Join(full, "\n"), nil
}
func (c *VolumeStatusCommand) formatTopologies(vol *api.CSIVolume) string {
var out []string
// Find the union of all the keys
head := map[string]string{}
for _, t := range vol.Topologies {
for key := range t.Segments {
if _, ok := head[key]; !ok {
head[key] = ""
}
}
}
// Append the header
var line []string
for key := range head {
line = append(line, key)
}
out = append(out, strings.Join(line, " "))
// Append each topology
for _, t := range vol.Topologies {
line = []string{}
for key := range head {
line = append(line, t.Segments[key])
}
out = append(out, strings.Join(line, " "))
}
return strings.Join(out, "\n")
}
func csiVolMountOption(volume, request *api.CSIMountOptions) string {
var req, opts *structs.CSIMountOptions
if request != nil {
req = &structs.CSIMountOptions{
FSType: request.FSType,
MountFlags: request.MountFlags,
}
}
if volume == nil {
opts = req
} else {
opts = &structs.CSIMountOptions{
FSType: volume.FSType,
MountFlags: volume.MountFlags,
}
opts.Merge(req)
}
if opts == nil {
return "<none>"
}
var out string
if opts.FSType != "" {
out = fmt.Sprintf("fs_type: %s", opts.FSType)
}
if len(opts.MountFlags) > 0 {
out = fmt.Sprintf("%s flags: %s", out, strings.Join(opts.MountFlags, ", "))
}
return out
}