let (catalog_tx, catalog_rx) = std::sync::mpsc::sync_channel(10); // allow to buffer 10 writes
let catalog_stream = crate::tools::StdChannelStream(catalog_rx);
let catalog_chunk_size = 512*1024;
let catalog_chunk_stream = ChunkStream::new(catalog_stream, Some(catalog_chunk_size));
let (catalog_tx, catalog_rx) = std::sync::mpsc::sync_channel(10); // allow to buffer 10 writes
let catalog_stream = crate::tools::StdChannelStream(catalog_rx);
let catalog_chunk_size = 512*1024;
let catalog_chunk_stream = ChunkStream::new(catalog_stream, Some(catalog_chunk_size));