rootfs_provider

Documentation

Index

• type CakeOrdinator
  • func NewCakeOrdinator(cake layercake.Cake, fetcher RepositoryFetcher, layerCreator LayerCreator, ...) *CakeOrdinator
  • func (c *CakeOrdinator) Create(logger lager.Logger, id string, spec Spec) (string, []string, error)
  • func (c *CakeOrdinator) Destroy(logger lager.Logger, id string) error
  • func (c *CakeOrdinator) GC(logger lager.Logger) error
  • func (c *CakeOrdinator) Metrics(logger lager.Logger, id string) (garden.ContainerDiskStat, error)
• type ContainerLayerCreator
  • func NewLayerCreator(graph Graph, volumeCreator VolumeCreator, namespacer Namespacer) *ContainerLayerCreator
  • func (provider *ContainerLayerCreator) Create(log lager.Logger, id string, parentImage *repository_fetcher.Image, spec Spec) (string, []string, error)
• type GCer
• type GetUsageFunc
• type Graph
• type LayerCreator
• type Mapper
• type MappingList
  • func (m MappingList) Map(id int) int
  • func (m MappingList) String() string
• type MetricsAdapter
  • func NewMetricsAdapter(fn GetUsageFunc, id2path func(layercake.ID) string) MetricsAdapter
  • func (m MetricsAdapter) Metrics(logger lager.Logger, id layercake.ID) (garden.ContainerDiskStat, error)
• type Metricser
• type Namespacer
• type RepositoryFetcher
• type SimpleVolumeCreator
  • func (SimpleVolumeCreator) Create(root string, volume string) error
• type Spec
• type StringMapper
• type Translator
• type UidNamespacer
  • func (n *UidNamespacer) CacheKey() string
  • func (n *UidNamespacer) Namespace(log lager.Logger, rootfsPath string) error
• type UidTranslator
  • func NewUidTranslator(uidMappings StringMapper, gidMappings StringMapper) *UidTranslator
  • func (u UidTranslator) CacheKey() string
  • func (u UidTranslator) Translate(path string, info os.FileInfo, err error) error
• type VolumeCreator

Types

type CakeOrdinator

type CakeOrdinator struct {
	// contains filtered or unexported fields
}

CakeOrdinator manages a cake, fetching layers as neccesary

func NewCakeOrdinator

func NewCakeOrdinator(cake layercake.Cake, fetcher RepositoryFetcher, layerCreator LayerCreator, metrics Metricser, gc GCer) *CakeOrdinator

New creates a new cake-ordinator, there should only be one CakeOrdinator for a particular cake.

func (*CakeOrdinator) Create

func (c *CakeOrdinator) Create(logger lager.Logger, id string, spec Spec) (string, []string, error)

func (*CakeOrdinator) Destroy

func (c *CakeOrdinator) Destroy(logger lager.Logger, id string) error

func (*CakeOrdinator) GC

func (c *CakeOrdinator) GC(logger lager.Logger) error

func (*CakeOrdinator) Metrics

func (c *CakeOrdinator) Metrics(logger lager.Logger, id string) (garden.ContainerDiskStat, error)

type ContainerLayerCreator

type ContainerLayerCreator struct {
	// contains filtered or unexported fields
}

func NewLayerCreator

func NewLayerCreator(
	graph Graph,
	volumeCreator VolumeCreator,
	namespacer Namespacer,
) *ContainerLayerCreator

func (*ContainerLayerCreator) Create

func (provider *ContainerLayerCreator) Create(log lager.Logger, id string, parentImage *repository_fetcher.Image, spec Spec) (string, []string, error)

type GCer

type GCer interface {
	GC(log lager.Logger, cake layercake.Cake) error
}

type GetUsageFunc

type GetUsageFunc func(logger lager.Logger, rootfsPath string) (garden.ContainerDiskStat, error)

type Graph

type Graph interface {
	layercake.Cake
}

type LayerCreator

type LayerCreator interface {
	Create(log lager.Logger, id string, parentImage *repository_fetcher.Image, spec Spec) (string, []string, error)
}

type Mapper

type Mapper interface {
	Map(id int) int
}

type MappingList

type MappingList []specs.IDMapping

func (MappingList) Map

func (m MappingList) Map(id int) int

func (MappingList) String

func (m MappingList) String() string

type MetricsAdapter

type MetricsAdapter struct {
	// contains filtered or unexported fields
}

MetricsAdapter implements cakeordinator.Metricser using existing quota_manager.GetUsage func

func NewMetricsAdapter

func NewMetricsAdapter(fn GetUsageFunc, id2path func(layercake.ID) string) MetricsAdapter

func (MetricsAdapter) Metrics

func (m MetricsAdapter) Metrics(logger lager.Logger, id layercake.ID) (garden.ContainerDiskStat, error)

type Metricser

type Metricser interface {
	Metrics(logger lager.Logger, id layercake.ID) (garden.ContainerDiskStat, error)
}

type Namespacer

type Namespacer interface {
	CacheKey() string
	Namespace(log lager.Logger, rootfsPath string) error
}

type RepositoryFetcher

type RepositoryFetcher interface {
	Fetch(*url.URL, int64) (*repository_fetcher.Image, error)
}

type SimpleVolumeCreator

type SimpleVolumeCreator struct{}

SimpleVolumeCreator implements volume creation by (simply) creating the relevant directories. If a directory already exists in the image it is emptied.

func (SimpleVolumeCreator) Create

func (SimpleVolumeCreator) Create(root string, volume string) error

type Spec

type Spec struct {
	RootFS     *url.URL
	Namespaced bool
	QuotaSize  int64
	QuotaScope garden.DiskLimitScope
}

type StringMapper

type StringMapper interface {
	fmt.Stringer
	Mapper
}

type Translator

type Translator interface {
	CacheKey() string
	Translate(path string, info os.FileInfo, err error) error
}

type UidNamespacer

type UidNamespacer struct {
	Translator Translator
}

func (*UidNamespacer) CacheKey

func (n *UidNamespacer) CacheKey() string

func (*UidNamespacer) Namespace

func (n *UidNamespacer) Namespace(log lager.Logger, rootfsPath string) error

type UidTranslator

type UidTranslator struct {
	// contains filtered or unexported fields
}

func NewUidTranslator

func NewUidTranslator(uidMappings StringMapper, gidMappings StringMapper) *UidTranslator

func (UidTranslator) CacheKey

func (u UidTranslator) CacheKey() string

func (UidTranslator) Translate

func (u UidTranslator) Translate(path string, info os.FileInfo, err error) error

type VolumeCreator

type VolumeCreator interface {
	Create(root string, volume string) error
}