func checkFileHasContents(c *gc.C, stor storage.StorageReader, name string, contents []byte, attempt utils.AttemptStrategy) {
r, err := storage.GetWithRetry(stor, name, attempt)
c.Assert(err, gc.IsNil)
c.Check(r, gc.NotNil)
defer r.Close()
data, err := ioutil.ReadAll(r)
c.Check(err, gc.IsNil)
c.Check(data, gc.DeepEquals, contents)
url, err := stor.URL(name)
c.Assert(err, gc.IsNil)
var resp *http.Response
for a := attempt.Start(); a.Next(); {
resp, err = utils.GetValidatingHTTPClient().Get(url)
c.Assert(err, gc.IsNil)
if resp.StatusCode != 404 {
break
}
c.Logf("get retrying after earlier get succeeded. *sigh*.")
}
c.Assert(err, gc.IsNil)
data, err = ioutil.ReadAll(resp.Body)
c.Assert(err, gc.IsNil)
defer resp.Body.Close()
c.Assert(resp.StatusCode, gc.Equals, 200, gc.Commentf("error response: %s", data))
c.Check(data, gc.DeepEquals, contents)
}
func readImageMetadata(stor storage.StorageReader, path string) ([]byte, error) {
r, err := stor.Get(path)
if err != nil {
return nil, err
}
defer r.Close()
return ioutil.ReadAll(r)
}
// ParseMetadataFromStorage loads ImageMetadata from the specified storage reader.
func ParseMetadataFromStorage(c *gc.C, stor storage.StorageReader) []*imagemetadata.ImageMetadata {
source := storage.NewStorageSimpleStreamsDataSource("test storage reader", stor, "images")
// Find the simplestreams index file.
params := simplestreams.ValueParams{
DataType: "image-ids",
ValueTemplate: imagemetadata.ImageMetadata{},
}
const requireSigned = false
indexPath := simplestreams.UnsignedIndex
indexRef, err := simplestreams.GetIndexWithFormat(
source, indexPath, "index:1.0", requireSigned, simplestreams.CloudSpec{}, params)
c.Assert(err, gc.IsNil)
c.Assert(indexRef.Indexes, gc.HasLen, 1)
imageIndexMetadata := indexRef.Indexes["com.ubuntu.cloud:custom"]
c.Assert(imageIndexMetadata, gc.NotNil)
// Read the products file contents.
r, err := stor.Get(path.Join("images", imageIndexMetadata.ProductsFilePath))
defer r.Close()
c.Assert(err, gc.IsNil)
data, err := ioutil.ReadAll(r)
c.Assert(err, gc.IsNil)
// Parse the products file metadata.
url, err := source.URL(imageIndexMetadata.ProductsFilePath)
c.Assert(err, gc.IsNil)
cloudMetadata, err := simplestreams.ParseCloudMetadata(data, "products:1.0", url, imagemetadata.ImageMetadata{})
c.Assert(err, gc.IsNil)
// Collate the metadata.
imageMetadataMap := make(map[string]*imagemetadata.ImageMetadata)
var expectedProductIds set.Strings
var imageVersions set.Strings
for _, mc := range cloudMetadata.Products {
for _, items := range mc.Items {
for key, item := range items.Items {
imageMetadata := item.(*imagemetadata.ImageMetadata)
imageMetadataMap[key] = imageMetadata
imageVersions.Add(key)
productId := fmt.Sprintf("com.ubuntu.cloud:server:%s:%s", mc.Version, imageMetadata.Arch)
expectedProductIds.Add(productId)
}
}
}
// Make sure index's product IDs are all represented in the products metadata.
sort.Strings(imageIndexMetadata.ProductIds)
c.Assert(imageIndexMetadata.ProductIds, gc.DeepEquals, expectedProductIds.SortedValues())
imageMetadata := make([]*imagemetadata.ImageMetadata, len(imageMetadataMap))
for i, key := range imageVersions.SortedValues() {
imageMetadata[i] = imageMetadataMap[key]
}
return imageMetadata
}
// ReadList returns a List of the tools in store with the given major.minor version.
// If minorVersion = -1, then only majorVersion is considered.
// If store contains no such tools, it returns ErrNoMatches.
func ReadList(stor storage.StorageReader, toolsDir string, majorVersion, minorVersion int) (coretools.List, error) {
if minorVersion >= 0 {
logger.Debugf("reading v%d.%d tools", majorVersion, minorVersion)
} else {
logger.Debugf("reading v%d.* tools", majorVersion)
}
storagePrefix := storagePrefix(toolsDir)
names, err := storage.List(stor, storagePrefix)
if err != nil {
return nil, err
}
var list coretools.List
var foundAnyTools bool
for _, name := range names {
name = filepath.ToSlash(name)
if !strings.HasPrefix(name, storagePrefix) || !strings.HasSuffix(name, toolSuffix) {
continue
}
var t coretools.Tools
vers := name[len(storagePrefix) : len(name)-len(toolSuffix)]
if t.Version, err = version.ParseBinary(vers); err != nil {
logger.Debugf("failed to parse version %q: %v", vers, err)
continue
}
foundAnyTools = true
// Major version must match specified value.
if t.Version.Major != majorVersion {
continue
}
// If specified minor version value supplied, minor version must match.
if minorVersion >= 0 && t.Version.Minor != minorVersion {
continue
}
logger.Debugf("found %s", vers)
if t.URL, err = stor.URL(name); err != nil {
return nil, err
}
list = append(list, &t)
// Older versions of Juju only know about ppc64, so add metadata for that arch.
if t.Version.Arch == arch.PPC64EL {
legacyPPC64Tools := t
legacyPPC64Tools.Version.Arch = arch.LEGACY_PPC64
list = append(list, &legacyPPC64Tools)
}
}
if len(list) == 0 {
if foundAnyTools {
return nil, coretools.ErrNoMatches
}
return nil, ErrNoTools
}
return list, nil
}
// ReadList returns a List of the tools in store with the given major.minor version.
// If minorVersion = -1, then only majorVersion is considered.
// If store contains no such tools, it returns ErrNoMatches.
func ReadList(stor storage.StorageReader, majorVersion, minorVersion int) (coretools.List, error) {
if minorVersion >= 0 {
logger.Debugf("reading v%d.%d tools", majorVersion, minorVersion)
} else {
logger.Debugf("reading v%d.* tools", majorVersion)
}
names, err := storage.List(stor, toolPrefix)
if err != nil {
return nil, err
}
var list coretools.List
var foundAnyTools bool
for _, name := range names {
if !strings.HasPrefix(name, toolPrefix) || !strings.HasSuffix(name, toolSuffix) {
continue
}
var t coretools.Tools
vers := name[len(toolPrefix) : len(name)-len(toolSuffix)]
if t.Version, err = version.ParseBinary(vers); err != nil {
logger.Debugf("failed to parse version %q: %v", vers, err)
continue
}
foundAnyTools = true
// Major version must match specified value.
if t.Version.Major != majorVersion {
continue
}
// If specified minor version value supplied, minor version must match.
if minorVersion >= 0 && t.Version.Minor != minorVersion {
continue
}
logger.Debugf("found %s", vers)
if t.URL, err = stor.URL(name); err != nil {
return nil, err
}
list = append(list, &t)
}
if len(list) == 0 {
if foundAnyTools {
return nil, coretools.ErrNoMatches
}
return nil, ErrNoTools
}
return list, nil
}
func checkFileHasContents(c *gc.C, stor storage.StorageReader, name string, contents []byte) {
r, err := storage.Get(stor, name)
c.Assert(err, gc.IsNil)
c.Check(r, gc.NotNil)
defer r.Close()
data, err := ioutil.ReadAll(r)
c.Check(err, gc.IsNil)
c.Check(data, gc.DeepEquals, contents)
url, err := stor.URL(name)
c.Assert(err, gc.IsNil)
resp, err := http.Get(url)
c.Assert(err, gc.IsNil)
data, err = ioutil.ReadAll(resp.Body)
c.Assert(err, gc.IsNil)
defer resp.Body.Close()
c.Assert(resp.StatusCode, gc.Equals, http.StatusOK, gc.Commentf("error response: %s", data))
c.Check(data, gc.DeepEquals, contents)
}
// migrateCustomImageMetadata copies uploaded image metadata from provider
// storage to environment storage, preserving paths.
func migrateCustomImageMetadata(st *state.State, agentConfig agent.Config) error {
logger.Debugf("migrating custom image metadata to environment storage")
estor := newStateStorage(st.EnvironUUID(), st.MongoSession())
// Local and manual provider host storage on the state server's
// filesystem, and serve via HTTP storage. The storage worker
// doesn't run yet, so we just open the files directly.
var pstor storage.StorageReader
providerType := agentConfig.Value(agent.ProviderType)
if providerType == provider.Local || provider.IsManual(providerType) {
storageDir := agentConfig.Value(agent.StorageDir)
var err error
pstor, err = filestorage.NewFileStorageReader(storageDir)
if err != nil {
return errors.Annotate(err, "cannot get local filesystem storage reader")
}
} else {
var err error
pstor, err = environs.LegacyStorage(st)
if errors.IsNotSupported(err) {
return nil
} else if err != nil {
return errors.Annotate(err, "cannot get provider storage")
}
}
paths, err := pstor.List(storage.BaseImagesPath)
if err != nil {
return err
}
for _, path := range paths {
logger.Infof("migrating image metadata at path %q", path)
data, err := readImageMetadata(pstor, path)
if err != nil {
return errors.Annotate(err, "failed to read image metadata")
}
err = estor.Put(path, bytes.NewReader(data), int64(len(data)))
if err != nil {
return errors.Annotate(err, "failed to write image metadata")
}
}
return nil
}
// ParseMetadataFromStorage loads ImageMetadata from the specified storage reader.
func ParseMetadataFromStorage(c *gc.C, stor storage.StorageReader) []*imagemetadata.ImageMetadata {
imageIndexMetadata, source := ParseIndexMetadataFromStorage(c, stor)
c.Assert(imageIndexMetadata, gc.NotNil)
// Read the products file contents.
r, err := stor.Get(path.Join("images", imageIndexMetadata.ProductsFilePath))
defer r.Close()
c.Assert(err, jc.ErrorIsNil)
data, err := ioutil.ReadAll(r)
c.Assert(err, jc.ErrorIsNil)
// Parse the products file metadata.
url, err := source.URL(imageIndexMetadata.ProductsFilePath)
c.Assert(err, jc.ErrorIsNil)
cloudMetadata, err := simplestreams.ParseCloudMetadata(data, "products:1.0", url, imagemetadata.ImageMetadata{})
c.Assert(err, jc.ErrorIsNil)
// Collate the metadata.
imageMetadataMap := make(map[string]*imagemetadata.ImageMetadata)
expectedProductIds, imageVersions := make(set.Strings), make(set.Strings)
for _, mc := range cloudMetadata.Products {
for _, items := range mc.Items {
for key, item := range items.Items {
imageMetadata := item.(*imagemetadata.ImageMetadata)
imageMetadataMap[key] = imageMetadata
imageVersions.Add(key)
productId := fmt.Sprintf("com.ubuntu.cloud:server:%s:%s", mc.Version, imageMetadata.Arch)
expectedProductIds.Add(productId)
}
}
}
// Make sure index's product IDs are all represented in the products metadata.
sort.Strings(imageIndexMetadata.ProductIds)
c.Assert(imageIndexMetadata.ProductIds, gc.DeepEquals, expectedProductIds.SortedValues())
imageMetadata := make([]*imagemetadata.ImageMetadata, len(imageMetadataMap))
for i, key := range imageVersions.SortedValues() {
imageMetadata[i] = imageMetadataMap[key]
}
return imageMetadata
}
func fetchToolsArchive(stor storage.StorageReader, toolsDir string, agentTools *tools.Tools) ([]byte, error) {
r, err := stor.Get(envtools.StorageName(agentTools.Version, toolsDir))
if err != nil {
return nil, err
}
defer r.Close()
var buf bytes.Buffer
hash, size, err := utils.ReadSHA256(io.TeeReader(r, &buf))
if err != nil {
return nil, err
}
if hash != agentTools.SHA256 {
return nil, errors.New("hash mismatch")
}
if size != agentTools.Size {
return nil, errors.New("size mismatch")
}
return buf.Bytes(), nil
}
// ParseMetadataFromStorage loads ToolsMetadata from the specified storage reader.
func ParseMetadataFromStorage(c *gc.C, stor storage.StorageReader, stream string, expectMirrors bool) []*tools.ToolsMetadata {
source := storage.NewStorageSimpleStreamsDataSource("test storage reader", stor, "tools")
params := simplestreams.ValueParams{
DataType: tools.ContentDownload,
ValueTemplate: tools.ToolsMetadata{},
}
const requireSigned = false
indexPath := simplestreams.UnsignedIndex("v1", 2)
mirrorsPath := simplestreams.MirrorsPath("v1")
indexRef, err := simplestreams.GetIndexWithFormat(
source, indexPath, "index:1.0", mirrorsPath, requireSigned, simplestreams.CloudSpec{}, params)
c.Assert(err, jc.ErrorIsNil)
toolsIndexMetadata := indexRef.Indexes[tools.ToolsContentId(stream)]
c.Assert(toolsIndexMetadata, gc.NotNil)
// Read the products file contents.
r, err := stor.Get(path.Join("tools", toolsIndexMetadata.ProductsFilePath))
defer r.Close()
c.Assert(err, jc.ErrorIsNil)
data, err := ioutil.ReadAll(r)
c.Assert(err, jc.ErrorIsNil)
url, err := source.URL(toolsIndexMetadata.ProductsFilePath)
c.Assert(err, jc.ErrorIsNil)
cloudMetadata, err := simplestreams.ParseCloudMetadata(data, "products:1.0", url, tools.ToolsMetadata{})
c.Assert(err, jc.ErrorIsNil)
toolsMetadataMap := make(map[string]*tools.ToolsMetadata)
expectedProductIds := make(set.Strings)
toolsVersions := make(set.Strings)
for _, mc := range cloudMetadata.Products {
for _, items := range mc.Items {
for key, item := range items.Items {
toolsMetadata := item.(*tools.ToolsMetadata)
toolsMetadataMap[key] = toolsMetadata
toolsVersions.Add(key)
seriesVersion, err := series.SeriesVersion(toolsMetadata.Release)
if err != nil {
c.Assert(err, jc.Satisfies, series.IsUnknownSeriesVersionError)
}
productId := fmt.Sprintf("com.ubuntu.juju:%s:%s", seriesVersion, toolsMetadata.Arch)
expectedProductIds.Add(productId)
}
}
}
// Make sure index's product IDs are all represented in the products metadata.
sort.Strings(toolsIndexMetadata.ProductIds)
c.Assert(toolsIndexMetadata.ProductIds, gc.DeepEquals, expectedProductIds.SortedValues())
toolsMetadata := make([]*tools.ToolsMetadata, len(toolsMetadataMap))
for i, key := range toolsVersions.SortedValues() {
toolsMetadata[i] = toolsMetadataMap[key]
}
if expectMirrors {
r, err = stor.Get(path.Join("tools", simplestreams.UnsignedMirror("v1")))
c.Assert(err, jc.ErrorIsNil)
defer r.Close()
data, err = ioutil.ReadAll(r)
c.Assert(err, jc.ErrorIsNil)
c.Assert(string(data), jc.Contains, `"mirrors":`)
c.Assert(string(data), jc.Contains, tools.ToolsContentId(stream))
c.Assert(err, jc.ErrorIsNil)
}
return toolsMetadata
}
