func progressWrapperRender(op *operation, key string, description string, progressInt int64, speedInt int64) {
meta := op.metadata
if meta == nil {
meta = make(map[string]interface{})
}
progress := fmt.Sprintf("%s (%s/s)", shared.GetByteSizeString(progressInt), shared.GetByteSizeString(speedInt))
if description != "" {
progress = fmt.Sprintf("%s: %s (%s/s)", description, shared.GetByteSizeString(progressInt), shared.GetByteSizeString(speedInt))
}
if meta[key] != progress {
meta[key] = progress
op.UpdateMetadata(meta)
}
}
// ImageDownload checks if we have that Image Fingerprint else
// downloads the image from a remote server.
func (d *Daemon) ImageDownload(op *operation, server string, protocol string, certificate string, secret string, alias string, forContainer bool, autoUpdate bool) (string, error) {
var err error
var ss *shared.SimpleStreams
var ctxMap log.Ctx
if protocol == "" {
protocol = "lxd"
}
fp := alias
// Expand aliases
if protocol == "simplestreams" {
imageStreamCacheLock.Lock()
entry, _ := imageStreamCache[server]
if entry == nil || entry.expiry.Before(time.Now()) {
refresh := func() (*imageStreamCacheEntry, error) {
// Setup simplestreams client
ss, err = shared.SimpleStreamsClient(server, d.proxy)
if err != nil {
return nil, err
}
// Get all aliases
aliases, err := ss.ListAliases()
if err != nil {
return nil, err
}
// Get all fingerprints
images, err := ss.ListImages()
if err != nil {
return nil, err
}
fingerprints := []string{}
for _, image := range images {
fingerprints = append(fingerprints, image.Fingerprint)
}
// Generate cache entry
entry = &imageStreamCacheEntry{ss: ss, Aliases: aliases, Fingerprints: fingerprints, expiry: time.Now().Add(time.Hour)}
imageStreamCache[server] = entry
imageSaveStreamCache()
return entry, nil
}
newEntry, err := refresh()
if err == nil {
// Cache refreshed
entry = newEntry
} else if entry != nil {
// Failed to fetch entry but existing cache
shared.LogWarn("Unable to refresh cache, using stale entry", log.Ctx{"server": server})
entry.expiry = time.Now().Add(time.Hour)
} else {
// Failed to fetch entry and nothing in cache
imageStreamCacheLock.Unlock()
return "", err
}
} else {
shared.LogDebug("Using SimpleStreams cache entry", log.Ctx{"server": server, "expiry": entry.expiry})
ss = entry.ss
}
imageStreamCacheLock.Unlock()
// Expand aliases
for _, alias := range entry.Aliases {
if alias.Name != fp {
continue
}
fp = alias.Target
break
}
// Expand fingerprint
for _, fingerprint := range entry.Fingerprints {
if !strings.HasPrefix(fingerprint, fp) {
continue
}
if fp == alias {
alias = fingerprint
}
fp = fingerprint
break
}
} else if protocol == "lxd" {
target, err := remoteGetImageFingerprint(d, server, certificate, fp)
if err == nil && target != "" {
fp = target
}
}
if _, _, err := dbImageGet(d.db, fp, false, false); err == nil {
shared.LogDebug("Image already exists in the db", log.Ctx{"image": fp})
// already have it
return fp, nil
}
// Now check if we already downloading the image
d.imagesDownloadingLock.RLock()
if waitChannel, ok := d.imagesDownloading[fp]; ok {
// We already download the image
d.imagesDownloadingLock.RUnlock()
shared.LogDebug(
"Already downloading the image, waiting for it to succeed",
log.Ctx{"image": fp})
// Wait until the download finishes (channel closes)
if _, ok := <-waitChannel; ok {
shared.LogWarnf("Value transmitted over image lock semaphore?")
}
if _, _, err := dbImageGet(d.db, fp, false, true); err != nil {
shared.LogError(
"Previous download didn't succeed",
log.Ctx{"image": fp})
return "", fmt.Errorf("Previous download didn't succeed")
}
shared.LogDebug(
"Previous download succeeded",
log.Ctx{"image": fp})
return fp, nil
}
d.imagesDownloadingLock.RUnlock()
if op == nil {
ctxMap = log.Ctx{"alias": alias, "server": server}
} else {
ctxMap = log.Ctx{"trigger": op.url, "image": fp, "operation": op.id, "alias": alias, "server": server}
}
shared.LogInfo("Downloading image", ctxMap)
// Add the download to the queue
d.imagesDownloadingLock.Lock()
d.imagesDownloading[fp] = make(chan bool)
d.imagesDownloadingLock.Unlock()
// Unlock once this func ends.
defer func() {
d.imagesDownloadingLock.Lock()
if waitChannel, ok := d.imagesDownloading[fp]; ok {
close(waitChannel)
delete(d.imagesDownloading, fp)
}
d.imagesDownloadingLock.Unlock()
}()
exporturl := server
var info shared.ImageInfo
info.Fingerprint = fp
destDir := shared.VarPath("images")
destName := filepath.Join(destDir, fp)
if shared.PathExists(destName) {
d.Storage.ImageDelete(fp)
}
progress := func(progressInt int64, speedInt int64) {
if op == nil {
return
}
meta := op.metadata
if meta == nil {
meta = make(map[string]interface{})
}
progress := fmt.Sprintf("%d%% (%s/s)", progressInt, shared.GetByteSizeString(speedInt))
if meta["download_progress"] != progress {
meta["download_progress"] = progress
op.UpdateMetadata(meta)
}
}
if protocol == "lxd" {
/* grab the metadata from /1.0/images/%s */
var url string
if secret != "" {
url = fmt.Sprintf(
"%s/%s/images/%s?secret=%s",
server, shared.APIVersion, fp, secret)
} else {
url = fmt.Sprintf("%s/%s/images/%s", server, shared.APIVersion, fp)
}
resp, err := d.httpGetSync(url, certificate)
if err != nil {
shared.LogError(
"Failed to download image metadata",
log.Ctx{"image": fp, "err": err})
return "", err
}
if err := json.Unmarshal(resp.Metadata, &info); err != nil {
return "", err
}
/* now grab the actual file from /1.0/images/%s/export */
if secret != "" {
exporturl = fmt.Sprintf(
"%s/%s/images/%s/export?secret=%s",
server, shared.APIVersion, fp, secret)
} else {
exporturl = fmt.Sprintf(
"%s/%s/images/%s/export",
server, shared.APIVersion, fp)
}
} else if protocol == "simplestreams" {
err := ss.Download(fp, "meta", destName, nil)
if err != nil {
return "", err
}
err = ss.Download(fp, "root", destName+".rootfs", progress)
if err != nil {
return "", err
}
info, err := ss.GetImageInfo(fp)
if err != nil {
return "", err
}
info.Public = false
info.AutoUpdate = autoUpdate
_, err = imageBuildFromInfo(d, *info)
if err != nil {
return "", err
}
if alias != fp {
id, _, err := dbImageGet(d.db, fp, false, true)
if err != nil {
return "", err
}
err = dbImageSourceInsert(d.db, id, server, protocol, "", alias)
if err != nil {
return "", err
}
}
shared.LogInfo("Image downloaded", ctxMap)
if forContainer {
return fp, dbImageLastAccessInit(d.db, fp)
}
return fp, nil
}
raw, err := d.httpGetFile(exporturl, certificate)
if err != nil {
shared.LogError(
"Failed to download image",
log.Ctx{"image": fp, "err": err})
return "", err
}
info.Size = raw.ContentLength
ctype, ctypeParams, err := mime.ParseMediaType(raw.Header.Get("Content-Type"))
if err != nil {
ctype = "application/octet-stream"
}
body := &shared.ProgressReader{
ReadCloser: raw.Body,
Tracker: &shared.ProgressTracker{
Length: raw.ContentLength,
Handler: progress,
},
}
if ctype == "multipart/form-data" {
// Parse the POST data
mr := multipart.NewReader(body, ctypeParams["boundary"])
// Get the metadata tarball
part, err := mr.NextPart()
if err != nil {
shared.LogError(
"Invalid multipart image",
log.Ctx{"image": fp, "err": err})
return "", err
}
if part.FormName() != "metadata" {
shared.LogError(
"Invalid multipart image",
log.Ctx{"image": fp, "err": err})
return "", fmt.Errorf("Invalid multipart image")
}
destName = filepath.Join(destDir, info.Fingerprint)
f, err := os.Create(destName)
if err != nil {
shared.LogError(
"Failed to save image",
log.Ctx{"image": fp, "err": err})
return "", err
}
_, err = io.Copy(f, part)
f.Close()
if err != nil {
shared.LogError(
"Failed to save image",
log.Ctx{"image": fp, "err": err})
return "", err
}
// Get the rootfs tarball
part, err = mr.NextPart()
if err != nil {
shared.LogError(
"Invalid multipart image",
log.Ctx{"image": fp, "err": err})
return "", err
}
if part.FormName() != "rootfs" {
shared.LogError(
"Invalid multipart image",
log.Ctx{"image": fp})
return "", fmt.Errorf("Invalid multipart image")
}
destName = filepath.Join(destDir, info.Fingerprint+".rootfs")
f, err = os.Create(destName)
if err != nil {
shared.LogError(
"Failed to save image",
log.Ctx{"image": fp, "err": err})
return "", err
}
_, err = io.Copy(f, part)
f.Close()
if err != nil {
shared.LogError(
"Failed to save image",
log.Ctx{"image": fp, "err": err})
return "", err
}
} else {
destName = filepath.Join(destDir, info.Fingerprint)
f, err := os.Create(destName)
if err != nil {
shared.LogError(
"Failed to save image",
log.Ctx{"image": fp, "err": err})
return "", err
}
_, err = io.Copy(f, body)
f.Close()
if err != nil {
shared.LogError(
"Failed to save image",
log.Ctx{"image": fp, "err": err})
return "", err
}
}
if protocol == "direct" {
imageMeta, err := getImageMetadata(destName)
if err != nil {
return "", err
}
info.Architecture = imageMeta.Architecture
info.CreationDate = time.Unix(imageMeta.CreationDate, 0)
info.ExpiryDate = time.Unix(imageMeta.ExpiryDate, 0)
info.Properties = imageMeta.Properties
}
// By default, make all downloaded images private
info.Public = false
if alias != fp && secret == "" {
info.AutoUpdate = autoUpdate
}
_, err = imageBuildFromInfo(d, info)
if err != nil {
shared.LogError(
"Failed to create image",
log.Ctx{"image": fp, "err": err})
return "", err
}
if alias != fp {
id, _, err := dbImageGet(d.db, fp, false, true)
if err != nil {
return "", err
}
err = dbImageSourceInsert(d.db, id, server, protocol, "", alias)
if err != nil {
return "", err
}
}
shared.LogInfo("Image downloaded", ctxMap)
if forContainer {
return fp, dbImageLastAccessInit(d.db, fp)
}
return fp, nil
}
func (c *infoCmd) containerInfo(d *lxd.Client, name string, showLog bool) error {
ct, err := d.ContainerInfo(name)
if err != nil {
return err
}
cs, err := d.ContainerState(name)
if err != nil {
return err
}
const layout = "2006/01/02 15:04 UTC"
fmt.Printf(i18n.G("Name: %s")+"\n", ct.Name)
if d.Remote != nil && d.Remote.Addr != "" {
fmt.Printf(i18n.G("Remote: %s")+"\n", d.Remote.Addr)
}
fmt.Printf(i18n.G("Architecture: %s")+"\n", ct.Architecture)
if ct.CreationDate.UTC().Unix() != 0 {
fmt.Printf(i18n.G("Created: %s")+"\n", ct.CreationDate.UTC().Format(layout))
}
fmt.Printf(i18n.G("Status: %s")+"\n", ct.Status)
if ct.Ephemeral {
fmt.Printf(i18n.G("Type: ephemeral") + "\n")
} else {
fmt.Printf(i18n.G("Type: persistent") + "\n")
}
fmt.Printf(i18n.G("Profiles: %s")+"\n", strings.Join(ct.Profiles, ", "))
if cs.Pid != 0 {
fmt.Printf(i18n.G("Pid: %d")+"\n", cs.Pid)
// IP addresses
ipInfo := ""
if cs.Network != nil {
for netName, net := range cs.Network {
vethStr := ""
if net.HostName != "" {
vethStr = fmt.Sprintf("\t%s", net.HostName)
}
for _, addr := range net.Addresses {
ipInfo += fmt.Sprintf(" %s:\t%s\t%s%s\n", netName, addr.Family, addr.Address, vethStr)
}
}
}
if ipInfo != "" {
fmt.Println(i18n.G("Ips:"))
fmt.Printf(ipInfo)
}
fmt.Println(i18n.G("Resources:"))
// Processes
fmt.Printf(" "+i18n.G("Processes: %d")+"\n", cs.Processes)
// Disk usage
diskInfo := ""
if cs.Disk != nil {
for entry, disk := range cs.Disk {
if disk.Usage != 0 {
diskInfo += fmt.Sprintf(" %s: %s\n", entry, shared.GetByteSizeString(disk.Usage))
}
}
}
if diskInfo != "" {
fmt.Println(i18n.G(" Disk usage:"))
fmt.Printf(diskInfo)
}
// CPU usage
cpuInfo := ""
if cs.CPU.Usage != 0 {
cpuInfo += fmt.Sprintf(" %s: %v\n", i18n.G("CPU usage (in seconds)"), cs.CPU.Usage/1000000000)
}
if cpuInfo != "" {
fmt.Println(i18n.G(" CPU usage:"))
fmt.Printf(cpuInfo)
}
// Memory usage
memoryInfo := ""
if cs.Memory.Usage != 0 {
memoryInfo += fmt.Sprintf(" %s: %s\n", i18n.G("Memory (current)"), shared.GetByteSizeString(cs.Memory.Usage))
}
if cs.Memory.UsagePeak != 0 {
memoryInfo += fmt.Sprintf(" %s: %s\n", i18n.G("Memory (peak)"), shared.GetByteSizeString(cs.Memory.UsagePeak))
}
if cs.Memory.SwapUsage != 0 {
memoryInfo += fmt.Sprintf(" %s: %s\n", i18n.G("Swap (current)"), shared.GetByteSizeString(cs.Memory.SwapUsage))
}
if cs.Memory.SwapUsagePeak != 0 {
memoryInfo += fmt.Sprintf(" %s: %s\n", i18n.G("Swap (peak)"), shared.GetByteSizeString(cs.Memory.SwapUsagePeak))
}
if memoryInfo != "" {
fmt.Println(i18n.G(" Memory usage:"))
fmt.Printf(memoryInfo)
}
// Network usage
networkInfo := ""
if cs.Network != nil {
for netName, net := range cs.Network {
networkInfo += fmt.Sprintf(" %s:\n", netName)
networkInfo += fmt.Sprintf(" %s: %s\n", i18n.G("Bytes received"), shared.GetByteSizeString(net.Counters.BytesReceived))
networkInfo += fmt.Sprintf(" %s: %s\n", i18n.G("Bytes sent"), shared.GetByteSizeString(net.Counters.BytesSent))
networkInfo += fmt.Sprintf(" %s: %d\n", i18n.G("Packets received"), net.Counters.PacketsReceived)
networkInfo += fmt.Sprintf(" %s: %d\n", i18n.G("Packets sent"), net.Counters.PacketsSent)
}
}
if networkInfo != "" {
fmt.Println(i18n.G(" Network usage:"))
fmt.Printf(networkInfo)
}
}
// List snapshots
first_snapshot := true
snaps, err := d.ListSnapshots(name)
if err != nil {
return nil
}
for _, snap := range snaps {
if first_snapshot {
fmt.Println(i18n.G("Snapshots:"))
}
fields := strings.Split(snap.Name, shared.SnapshotDelimiter)
fmt.Printf(" %s", fields[len(fields)-1])
if snap.CreationDate.UTC().Unix() != 0 {
fmt.Printf(" ("+i18n.G("taken at %s")+")", snap.CreationDate.UTC().Format(layout))
}
if snap.Stateful {
fmt.Printf(" (" + i18n.G("stateful") + ")")
} else {
fmt.Printf(" (" + i18n.G("stateless") + ")")
}
fmt.Printf("\n")
first_snapshot = false
}
if showLog {
log, err := d.GetLog(name, "lxc.log")
if err != nil {
return err
}
stuff, err := ioutil.ReadAll(log)
if err != nil {
return err
}
fmt.Printf("\n"+i18n.G("Log:")+"\n\n%s\n", string(stuff))
}
return nil
}