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CompressingReader: compressed data reader stream (#210) #211

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merged 4 commits into from
Dec 8, 2023

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oakad
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@oakad oakad commented Nov 13, 2023

In Go, http.Request requires an io.ReadCloser for an upload body. To facilitate compression of data being uploaded we want to wrap a source reader (such an io.File) with a proposed
lz4.CompressingReader, whereupon the said reader can be set directly into http.Request Body field.

This benefits not only the plain http.Request, but also the various network file storage APIs which build on top of Go's http client.

In Go, `http.Request` requires an `io.ReadCloser` for an upload body. To
facilitate compression of data being uploaded we want to wrap a
source reader (such an `io.File`) with a proposed
`lz4.CompressingReader`, whereupon the said reader can be set directly
into `http.Request` Body field.

This benefits not only the plain `http.Request`, but also the various
network file storage APIs which build on top of Go's http client.

Signed-off-by: Alex Dubov <[email protected]>
@oakad oakad mentioned this pull request Nov 13, 2023
Out buffer may have some stale overflow data on Reset.

Signed-off-by: Alex Dubov <[email protected]>
It is possible for out buffer to have no overflow data and yet
the read offset will be not zero (if byte slices passed by the reader
just happened to align perfectly).

Signed-off-by: Alex Dubov <[email protected]>
@pierrec
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pierrec commented Dec 7, 2023

CI reports some errors in your test file. Could you have a look?

@oakad
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oakad commented Dec 8, 2023

./compressing_reader_test.go:38:17: undefined: os.ReadFile
./compressing_reader_test.go:42:10: undefined: io.NopCloser
./compressing_reader_test.go:50:18: undefined: io.ReadAll
./compressing_reader_test.go:57:17: undefined: io.ReadAll

Looks like your go version is much older than mine. Technically, should not be a problem to go back to io/ioutil for these.

@pierrec pierrec merged commit e974631 into pierrec:v4 Dec 8, 2023
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2 participants