Golang schema.Map類代碼示例

func (up *Uploader) UploadMap(m schema.Map) (*client.PutResult, error) {
	json, err := m.JSON()
	if err != nil {
		return nil, err
	}
	return up.uploadString(json)
}

// fileMapFromDuplicate queries the server's search interface for an
// existing file with an entire contents of sum (a blobref string).
// If the server has it, it's validated, and then fileMap (which must
// already be partially populated) has its "parts" field populated,
// and then fileMap is uploaded (if necessary) and its blobref is
// returned.  If there's any problem, or a dup doesn't exist, ok is
// false.
func (up *Uploader) fileMapFromDuplicate(bs blobserver.StatReceiver, fileMap schema.Map, sum string) (fileSchema *blobref.BlobRef, ok bool) {
	_, err := up.Client.SearchRoot()
	if err != nil {
		return
	}
	dupFileRef, err := up.Client.SearchExistingFileSchema(blobref.MustParse(sum))
	if err != nil {
		log.Printf("Warning: error searching for already-uploaded copy of %s: %v", sum, err)
		return nil, false
	}
	if dupFileRef == nil {
		return nil, false
	}
	if *flagVerbose {
		log.Printf("Found dup of contents %s in file schema %s", sum, dupFileRef)
	}
	dupMap, err := up.Client.FetchMap(dupFileRef)
	if err != nil {
		log.Printf("Warning: error fetching %v: %v", dupFileRef, err)
		return nil, false
	}
	parts, ok := dupMap["parts"].([]interface{})
	if !ok {
		return nil, false
	}

	fileMap["parts"] = parts // safe, since dupMap never escapes, so sharing parts is okay

	// Hack: convert all the parts' float64 to int64, so they encode as e.g. "1000035"
	// and not "1.000035e+06".  Perhaps we should work in *schema.SuperSets here, and not
	// JSON maps.
	// TODO(bradfitz): clean up?
	for _, p := range parts {
		pm := p.(map[string]interface{})
		pm["size"] = int64(pm["size"].(float64))
	}

	json, err := fileMap.JSON()
	if err != nil {
		return nil, false
	}
	uh := client.NewUploadHandleFromString(json)
	if uh.BlobRef.Equal(dupFileRef) {
		// Unchanged (same filename, modtime, JSON serialization, etc)
		return dupFileRef, true
	}
	pr, err := up.uploadHandle(uh)
	if err != nil {
		log.Printf("Warning: error uploading file map after finding server dup of %v: %v", sum, err)
		return nil, false
	}
	return pr.BlobRef, true
}

func (h *Handler) SignMap(m schema.Map) (string, error) {
	m["camliSigner"] = h.pubKeyBlobRef.String()
	unsigned, err := m.JSON()
	if err != nil {
		return "", err
	}
	sreq := &jsonsign.SignRequest{
		UnsignedJSON:      unsigned,
		Fetcher:           h.pubKeyFetcher,
		ServerMode:        true,
		SecretKeyringPath: h.secretRing,
	}
	return sreq.Sign()
}

// sigTime optionally specifies the signature time.
// If zero, the current time is used.
func (up *Uploader) SignMap(m schema.Map, sigTime time.Time) (string, error) {
	camliSigBlobref := up.Client.SignerPublicKeyBlobref()
	if camliSigBlobref == nil {
		// TODO: more helpful error message
		return "", errors.New("No public key configured.")
	}

	m["camliSigner"] = camliSigBlobref.String()
	unsigned, err := m.JSON()
	if err != nil {
		return "", err
	}
	sr := &jsonsign.SignRequest{
		UnsignedJSON:  unsigned,
		Fetcher:       up.Client.GetBlobFetcher(),
		EntityFetcher: up.entityFetcher,
		SignatureTime: sigTime,
	}
	return sr.Sign()
}

func (id *IndexDeps) uploadAndSignMap(m schema.Map) *blobref.BlobRef {
	m["camliSigner"] = id.SignerBlobRef
	unsigned, err := m.JSON()
	if err != nil {
		id.Fatalf("uploadAndSignMap: " + err.Error())
	}
	sr := &jsonsign.SignRequest{
		UnsignedJSON:  unsigned,
		Fetcher:       id.PublicKeyFetcher,
		EntityFetcher: id.EntityFetcher,
		SignatureTime: id.now,
	}
	signed, err := sr.Sign()
	if err != nil {
		id.Fatalf("problem signing: " + err.Error())
	}
	tb := &test.Blob{Contents: signed}
	_, err = id.Index.ReceiveBlob(tb.BlobRef(), tb.Reader())
	if err != nil {
		id.Fatalf("problem indexing blob: %v\nblob was:\n%s", err, signed)
	}
	return tb.BlobRef()
}