Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
var FuseOpsList = []string{
fuseOpGetattr,
fuseOpGetxattr,
fuseOpListxattr,
fuseOpLookup,
fuseOpOpen,
fuseOpReaddir,
fuseOpReadLink,
fuseOpFileRead,
fuseOpFileGetattr,
fuseOpWhiteoutGetattr,
}
FuseOpsList is a list of available FUSE operations.
Functions ¶
This section is empty.
Types ¶
type FuseOperationCounter ¶
type FuseOperationCounter struct {
// contains filtered or unexported fields
}
FuseOperationCounter collects number of invocations of the various FUSE implementations and emits them as metrics. Setting `waitPeriod` to be > 0 allows delaying the time when the metrics are emitted.
func NewFuseOperationCounter ¶
func NewFuseOperationCounter(imgDigest digest.Digest, waitPeriod time.Duration) *FuseOperationCounter
NewFuseOperationCounter constructs a FuseOperationCounter for an image with digest imgDigest. waitPeriod specifies how long to wait before emitting the aggregated metrics.
func (*FuseOperationCounter) Inc ¶
func (f *FuseOperationCounter) Inc(op string)
Inc atomically increase the count of FUSE operation op. Noop if op is not in FuseOpsList.
func (*FuseOperationCounter) Run ¶
func (f *FuseOperationCounter) Run(ctx context.Context)
Run waits for f.waitPeriod to pass before emitting a log and metric for each operation in FuseOpsList. Should be started in different goroutine so that it doesn't block the current goroutine.
type Info ¶
type Info struct {
Digest digest.Digest
Size int64 // layer size in bytes
FetchedSize int64 // layer fetched size in bytes
ReadTime time.Time // last time the layer was read
}
Info is the current status of a layer.
type Layer ¶
type Layer interface {
// Info returns the information of this layer.
Info() Info
// RootNode returns the root node of this layer.
RootNode(baseInode uint32) (fusefs.InodeEmbedder, error)
// Check checks if the layer is still connectable.
Check() error
// Refresh refreshes the layer connection.
Refresh(ctx context.Context, hosts []docker.RegistryHost, refspec reference.Spec, desc ocispec.Descriptor) error
// Verify verifies this layer using the passed TOC Digest.
// Nop if Verify() or SkipVerify() was already called.
// NOTE: Legacy stargz code, this is never called.
Verify(tocDigest digest.Digest) (err error)
// SkipVerify skips verification for this layer.
// Nop if Verify() or SkipVerify() was already called.
SkipVerify()
// ReadAt reads this layer.
ReadAt([]byte, int64, ...remote.Option) (int, error)
// DisableXAttrs determines whether this layer should have xattrs disabled
DisableXAttrs() bool
// Done releases the reference to this layer. The resources related to this layer will be
// discarded sooner or later. Queries after calling this function won't be serviced.
Done()
}
Layer represents a layer.
type OverlayOpaqueType ¶
type OverlayOpaqueType int
OverlayOpaqueType enum possible types.
const ( OverlayOpaqueAll OverlayOpaqueType = iota OverlayOpaqueTrusted OverlayOpaqueUser )
OverlayOpaqueType enum.
type Resolver ¶
type Resolver struct {
// contains filtered or unexported fields
}
Resolver resolves the layer location and provieds the handler of that layer.
func NewResolver ¶
func NewResolver(root string, cfg config.FSConfig, resolveHandlers map[string]remote.Handler, metadataStore metadata.Store, artifactStore content.Storage, overlayOpaqueType OverlayOpaqueType, bgFetcher *backgroundfetcher.BackgroundFetcher) (*Resolver, error)
NewResolver returns a new layer resolver.
func (*Resolver) Resolve ¶
func (r *Resolver) Resolve(ctx context.Context, hosts []docker.RegistryHost, refspec reference.Spec, desc, sociDesc ocispec.Descriptor, opCounter *FuseOperationCounter, disableVerification bool, metadataOpts ...metadata.Option) (_ Layer, retErr error)
Resolve resolves a layer based on the passed layer blob information.
Source Files