zstdchunked

Documentation

Index

• func LayerConvertFunc(opts ...estargz.Option) converter.ConvertFunc
• func LayerConvertFuncWithCompressionLevel(compressionLevel zstd.EncoderLevel, opts ...estargz.Option) converter.ConvertFunc
• func LayerConvertWithLayerOptsFunc(opts map[digest.Digest][]estargz.Option) converter.ConvertFunc
• func LayerConvertWithLayerOptsFuncWithCompressionLevel(compressionLevel zstd.EncoderLevel, opts map[digest.Digest][]estargz.Option) converter.ConvertFunc

Functions

func LayerConvertFunc

func LayerConvertFunc(opts ...estargz.Option) converter.ConvertFunc

LayerConvertFunc converts legacy tar.gz layers into zstd:chunked layers.

This changes Docker MediaType to OCI MediaType so this should be used in conjunction with WithDockerToOCI().

Otherwise "io.containers.zstd-chunked.manifest-checksum" annotation will be lost, because the Docker media type does not support layer annotations.

SpeedDefault (level 3) is used for the compression level. See also: https://pkg.go.dev/github.com/klauspost/compress/zstd#EncoderLevel

func LayerConvertFuncWithCompressionLevel

func LayerConvertFuncWithCompressionLevel(compressionLevel zstd.EncoderLevel, opts ...estargz.Option) converter.ConvertFunc

LayerConvertFuncWithCompressionLevel converts legacy tar.gz layers into zstd:chunked layers with the specified compression level.

This changes Docker MediaType to OCI MediaType so this should be used in conjunction with WithDockerToOCI(). See LayerConvertFunc for more details. The difference between this function and LayerConvertFunc is that this allows configuring the compression level.

func LayerConvertWithLayerOptsFunc

func LayerConvertWithLayerOptsFunc(opts map[digest.Digest][]estargz.Option) converter.ConvertFunc

LayerConvertWithLayerOptsFunc converts legacy tar.gz layers into zstd:chunked layers.

This changes Docker MediaType to OCI MediaType so this should be used in conjunction with WithDockerToOCI(). See LayerConvertFunc for more details. The difference between this function and LayerConvertFunc is that this allows to specify additional eStargz options per layer.

func LayerConvertWithLayerOptsFuncWithCompressionLevel

func LayerConvertWithLayerOptsFuncWithCompressionLevel(compressionLevel zstd.EncoderLevel, opts map[digest.Digest][]estargz.Option) converter.ConvertFunc

LayerConvertWithLayerOptsFuncWithCompressionLevel converts legacy tar.gz layers into zstd:chunked layers. This function allows to specify the compression level of zstd.

This changes Docker MediaType to OCI MediaType so this should be used in conjunction with WithDockerToOCI(). See LayerConvertFunc for more details. The difference between this function and LayerConvertFunc is that this allows to specify additional eStargz options per layer and allows to specify the compression level.