github.com/tonistiigi/docker@v0.10.1-0.20240229224939-974013b0dc6a/image/tarexport/tarexport.go (about)

     1  package tarexport // import "github.com/docker/docker/image/tarexport"
     2  
     3  import (
     4  	"github.com/docker/distribution"
     5  	"github.com/docker/docker/api/types/events"
     6  	"github.com/docker/docker/image"
     7  	"github.com/docker/docker/layer"
     8  	refstore "github.com/docker/docker/reference"
     9  )
    10  
    11  const (
    12  	manifestFileName           = "manifest.json"
    13  	legacyLayerFileName        = "layer.tar"
    14  	legacyConfigFileName       = "json"
    15  	legacyRepositoriesFileName = "repositories"
    16  )
    17  
    18  type manifestItem struct {
    19  	Config       string
    20  	RepoTags     []string
    21  	Layers       []string
    22  	Parent       image.ID                                 `json:",omitempty"`
    23  	LayerSources map[layer.DiffID]distribution.Descriptor `json:",omitempty"`
    24  }
    25  
    26  type tarexporter struct {
    27  	is             image.Store
    28  	lss            layer.Store
    29  	rs             refstore.Store
    30  	loggerImgEvent LogImageEvent
    31  }
    32  
    33  // LogImageEvent defines interface for event generation related to image tar(load and save) operations
    34  type LogImageEvent interface {
    35  	// LogImageEvent generates an event related to an image operation
    36  	LogImageEvent(imageID, refName string, action events.Action)
    37  }
    38  
    39  // NewTarExporter returns new Exporter for tar packages
    40  func NewTarExporter(is image.Store, lss layer.Store, rs refstore.Store, loggerImgEvent LogImageEvent) image.Exporter {
    41  	return &tarexporter{
    42  		is:             is,
    43  		lss:            lss,
    44  		rs:             rs,
    45  		loggerImgEvent: loggerImgEvent,
    46  	}
    47  }