mirror of https://github.com/ceph/ceph-csi.git synced 2024-11-18 04:10:22 +00:00

Niels de Vos 91774fc936 rebase: vendor dependencies for Vault API

Uses github.com/libopenstorage/secrets to communicate with Vault. This
removes the need for maintaining our own limited Vault APIs.

By adding the new dependency, several other packages got updated in the
process. Unused indirect dependencies have been removed from go.mod.

Signed-off-by: Niels de Vos <ndevos@redhat.com>

2020-11-29 04:03:59 +00:00

2.4 KiB

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lz4 : LZ4 compression in pure Go

Overview

This package provides a streaming interface to LZ4 data streams as well as low level compress and uncompress functions for LZ4 data blocks. The implementation is based on the reference C one.

Install

Assuming you have the go toolchain installed:

go get github.com/pierrec/lz4

There is a command line interface tool to compress and decompress LZ4 files.

go install github.com/pierrec/lz4/cmd/lz4c

Usage

Usage of lz4c:
  -version
        print the program version

Subcommands:
Compress the given files or from stdin to stdout.
compress [arguments] [<file name> ...]
  -bc
        enable block checksum
  -l int
        compression level (0=fastest)
  -sc
        disable stream checksum
  -size string
        block max size [64K,256K,1M,4M] (default "4M")

Uncompress the given files or from stdin to stdout.
uncompress [arguments] [<file name> ...]

Example

// Compress and uncompress an input string.
s := "hello world"
r := strings.NewReader(s)

// The pipe will uncompress the data from the writer.
pr, pw := io.Pipe()
zw := lz4.NewWriter(pw)
zr := lz4.NewReader(pr)

go func() {
	// Compress the input string.
	_, _ = io.Copy(zw, r)
	_ = zw.Close() // Make sure the writer is closed
	_ = pw.Close() // Terminate the pipe
}()

_, _ = io.Copy(os.Stdout, zr)

// Output:
// hello world

Contributing

Contributions are very welcome for bug fixing, performance improvements...!

Open an issue with a proper description
Send a pull request with appropriate test case(s)

Contributors

Thanks to all contributors so far!

Special thanks to @Zariel for his asm implementation of the decoder.

Special thanks to @klauspost for his work on optimizing the code.

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