Exemplo n.º 1
0
// WriteMetadata writes the given tools metadata for the specified streams to the given storage.
// streamMetadata contains all known metadata so that the correct index files can be written.
// Only product files for the specified streams are written.
func WriteMetadata(stor storage.Storage, streamMetadata map[string][]*ToolsMetadata, streams []string, writeMirrors ShouldWriteMirrors) error {
	// TODO(perrito666) 2016-05-02 lp:1558657
	updated := time.Now()
	index, legacyIndex, products, err := MarshalToolsMetadataJSON(streamMetadata, updated)
	if err != nil {
		return err
	}
	metadataInfo := []MetadataFile{
		{simplestreams.UnsignedIndex(currentStreamsVersion, IndexFileVersion), index},
	}
	if legacyIndex != nil {
		metadataInfo = append(metadataInfo, MetadataFile{
			simplestreams.UnsignedIndex(currentStreamsVersion, 1), legacyIndex,
		})
	}
	for _, stream := range streams {
		if metadata, ok := products[stream]; ok {
			// If metadata hasn't changed, do not overwrite.
			unchanged, err := metadataUnchanged(stor, stream, metadata)
			if err != nil {
				return err
			}
			if unchanged {
				logger.Infof("Metadata for stream %q unchanged", stream)
				continue
			}
			// Metadata is different, so include it.
			metadataInfo = append(metadataInfo, MetadataFile{ProductMetadataPath(stream), metadata})
		}
	}
	if writeMirrors {
		streamsMirrorsMetadata := make(map[string][]simplestreams.MirrorReference)
		for stream := range streamMetadata {
			streamsMirrorsMetadata[ToolsContentId(stream)] = []simplestreams.MirrorReference{{
				Updated:  updated.Format("20060102"), // YYYYMMDD
				DataType: ContentDownload,
				Format:   simplestreams.MirrorFormat,
				Path:     simplestreams.MirrorFile,
			}}
		}
		mirrorsMetadata := map[string]map[string][]simplestreams.MirrorReference{
			"mirrors": streamsMirrorsMetadata,
		}
		mirrorsInfo, err := json.MarshalIndent(&mirrorsMetadata, "", "    ")
		if err != nil {
			return err
		}
		metadataInfo = append(
			metadataInfo, MetadataFile{simplestreams.UnsignedMirror(currentStreamsVersion), mirrorsInfo})
	}
	return writeMetadataFiles(stor, metadataInfo)
}
Exemplo n.º 2
0
// 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
}