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Files
Pawan Pinjarkar f84c94ead4 AGENT-702: Generate minimal ISO for external platform
- Renamed `ipxeBaseURL` to more generic `bootArtifactsBaseURL`
- Removed unwanted lint
- Added integration tests to create minimal ISO for external platform with and without bootArtifactsBaseURL in agent-config.yaml
- Fixed existing integration tests to include change of name from `ipxeBaseURL` to more generic `bootArtifactsBaseURL`
- Added BootArtifactsBaseUrl and bootArtifactsPath into parent asset AgentArtifacts
- AgentArtifacts also depends on AgentConfig asset
- Moved common code to generate rootfs.img file into extractRootFS() in AgentArtifacts asset
- If the bootArtifactsBaseURL is specified, construct the custom rootfs URL otherwise default to the URL from the RHCOS streams file
- For external platform when the bootArtifactsBaseUrl is specified, output the rootfs file alongside the minimal ISO
- For all other platforms, continue generating full ISO (no explicit rootfs.img is generated)
- Vendor changes after updating github.com/openshift/assisted-image-service dependency
- set IMAGE_TYPE_ISO to 'minimal-iso' in create-cluster-and-infraenv.service.template when using external platform
- Log an info message to upload CCM manifests

Signed-off-by: Pawan Pinjarkar <ppinjark@redhat.com>
2023-09-07 12:44:09 -04:00
..

lz4 : LZ4 compression in pure Go

Go Reference CI Go Report Card GitHub tag (latest SemVer)

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/v4

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

go install github.com/pierrec/lz4/v4/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 @greatroar for his work on the asm implementations of the decoder for amd64 and arm64.

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