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Added ByteStream method to read from file chunk #517

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Added ByteStream method to read from file chunk #517

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12 changes: 12 additions & 0 deletions sdk/aws-smithy-http/src/byte_stream.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -293,6 +293,18 @@ impl ByteStream {
));
Ok(ByteStream::new(body))
}

/// Create a ByteStream from a file specifying offset and length
#[cfg(feature = "rt-tokio")]
pub async fn from_path_chunk(path: &std::path::Path, offset: u64, sz: u64) -> Result<Self, Error> {
let mut file = tokio::fs::File::open(path).await.map_err(|err| Error(err.into()))?;
use tokio::io::AsyncSeekExt;
let _s = file.seek(std::io::SeekFrom::Start(offset)).await.map_err(|err| Error(err.into()))?;
let body = SdkBody::from_dyn(http_body::combinators::BoxBody::new(
bytestream_util::PathBody::from_file(file, sz),
));
Ok(ByteStream::new(body))
}
}

impl Default for ByteStream {
Expand Down