snapshot

Documentation

Index

• func NewContainerdSnapshotter(s Snapshotter) (snapshots.Snapshotter, func() error)
• type Diff
• type MergeSnapshotter
  • func NewMergeSnapshotter(ctx context.Context, sn Snapshotter, lm leases.Manager) MergeSnapshotter
• type Mountable
• type Mounter
  • func LocalMounter(mountable Mountable) Mounter
  • func LocalMounterWithMounts(mounts []mount.Mount) Mounter
• type Snapshotter
  • func FromContainerdSnapshotter(name string, s snapshots.Snapshotter, idmap *idtools.IdentityMapping) Snapshotter

Functions

func NewContainerdSnapshotter

func NewContainerdSnapshotter(s Snapshotter) (snapshots.Snapshotter, func() error)

NewContainerdSnapshotter converts snapshotter to containerd snapshotter

Types

type Diff

type Diff struct {
	Lower string
	Upper string
}

type MergeSnapshotter

type MergeSnapshotter interface {
	Snapshotter
	// Merge creates a snapshot whose contents are the provided diffs applied onto one
	// another in the provided order, starting from scratch. The diffs are calculated
	// the same way that diffs are calculated during exports, which ensures that the
	// result of merging these diffs looks the same as exporting the diffs as layer
	// blobs and unpacking them as an image.
	//
	// Each key in the provided diffs is expected to be a committed snapshot. The
	// snapshot created by Merge is also committed.
	//
	// The size of a merged snapshot (as returned by the Usage method) depends on the merge
	// implementation. Implementations using hardlinks to create merged views will take up
	// less space than those that use copies, for example.
	Merge(ctx context.Context, key string, diffs []Diff, opts ...snapshots.Opt) error
}

func NewMergeSnapshotter

func NewMergeSnapshotter(ctx context.Context, sn Snapshotter, lm leases.Manager) MergeSnapshotter

type Mountable

type Mountable interface {
	// ID() string
	Mount() ([]mount.Mount, func() error, error)
	IdentityMapping() *idtools.IdentityMapping
}

type Mounter

type Mounter interface {
	Mount() (string, error)
	Unmount() error
}

func LocalMounter

func LocalMounter(mountable Mountable) Mounter

LocalMounter is a helper for mounting mountfactory to temporary path. In addition it can mount binds without privileges

func LocalMounterWithMounts

func LocalMounterWithMounts(mounts []mount.Mount) Mounter

LocalMounterWithMounts is a helper for mounting to temporary path. In addition it can mount binds without privileges

type Snapshotter

type Snapshotter interface {
	Name() string
	Mounts(ctx context.Context, key string) (Mountable, error)
	Prepare(ctx context.Context, key, parent string, opts ...snapshots.Opt) error
	View(ctx context.Context, key, parent string, opts ...snapshots.Opt) (Mountable, error)

	Stat(ctx context.Context, key string) (snapshots.Info, error)
	Update(ctx context.Context, info snapshots.Info, fieldpaths ...string) (snapshots.Info, error)
	Usage(ctx context.Context, key string) (snapshots.Usage, error)
	Commit(ctx context.Context, name, key string, opts ...snapshots.Opt) error
	Remove(ctx context.Context, key string) error
	Walk(ctx context.Context, fn snapshots.WalkFunc, filters ...string) error
	Close() error
	IdentityMapping() *idtools.IdentityMapping
}

Snapshotter defines interface that any snapshot implementation should satisfy

func FromContainerdSnapshotter

func FromContainerdSnapshotter(name string, s snapshots.Snapshotter, idmap *idtools.IdentityMapping) Snapshotter