Method getModTime

backend/b2/b2.go:2317–2343

Get modTime from the source; if --metadata is set, fetch the src metadata and get it from there. When metadata support is added to b2, this method will need a more generic name

(ctx context.Context, src fs.ObjectInfo, options []fs.OpenOption)

// Get modTime from the source; if --metadata is set, fetch the src metadata and get it from there.
// When metadata support is added to b2, this method will need a more generic name
func (o *Object) getModTime(ctx context.Context, src fs.ObjectInfo, options []fs.OpenOption) (time.Time, error) {
	modTime := src.ModTime(ctx)

	// Fetch metadata if --metadata is in use
	meta, err := fs.GetMetadataOptions(ctx, o.fs, src, options)
	if err != nil {
		return time.Time{}, fmt.Errorf("failed to read metadata from source object: %w", err)
	}
	// merge metadata into request and user metadata
	for k, v := range meta {
		k = strings.ToLower(k)
		// For now, the only metadata we're concerned with is "mtime"
		switch k {
		case "mtime":
			// mtime in meta overrides source ModTime
			metaModTime, err := time.Parse(time.RFC3339Nano, v)
			if err != nil {
				fs.Debugf(o, "failed to parse metadata %s: %q: %v", k, v, err)
			} else {
				modTime = metaModTime
			}
		default:
			// Do nothing for now
		}
	}
	return modTime, nil
}

// OpenChunkWriter returns the chunk size and a ChunkWriter
//