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Does it work with seek requests for partially accessing files for backends that support it, or does it download the whole file each time? Python similar: smart

• xuanwo 2y ago
  Yes, opendal supports seek. For example: use std::io; use std::io::SeekFrom; use futures::io::AsyncReadExt; use opendal::Operator; use opendal::Result; async fn test(op: Operator) -> io::Result<()> { let mut r = op .reader("hello.txt") .await? // Only access range (0, 8*1024*1024 ) .into_futures_async_read(0..8*1024*1024) .await?; // Seek to 1024. r.seek(SeekFrom::Start(1024)).await?; let mut bs = Vec::new(); r.read_to_end(&mut bs).await?; Ok(()) }