linux_backend

Documentation

Index

• Constants
• func RegisterHooks(hs hook.HookSet, runner Runner, config process.Env, ...)
• type ActiveProcess
• type Config
• type Container
• type ContainerProvider
• type ContainerRepository
• type FailedToSnapshotError
  • func (e FailedToSnapshotError) Error() string
• type HandleExistsError
  • func (e HandleExistsError) Error() string
• type HealthChecker
• type Limits
• type LinuxBackend
  • func New(logger lager.Logger, resourcePool ResourcePool, ...) *LinuxBackend
  • func (b *LinuxBackend) ApplyLimits(container Container, limits garden.Limits) error
  • func (b *LinuxBackend) BulkInfo(handles []string) (map[string]garden.ContainerInfoEntry, error)
  • func (b *LinuxBackend) BulkMetrics(handles []string) (map[string]garden.ContainerMetricsEntry, error)
  • func (b *LinuxBackend) Capacity() (garden.Capacity, error)
  • func (b *LinuxBackend) Containers(props garden.Properties) ([]garden.Container, error)
  • func (b *LinuxBackend) Create(spec garden.ContainerSpec) (garden.Container, error)
  • func (b *LinuxBackend) Destroy(handle string) error
  • func (b *LinuxBackend) GraceTime(container garden.Container) time.Duration
  • func (b *LinuxBackend) Lookup(handle string) (garden.Container, error)
  • func (b *LinuxBackend) Ping() error
  • func (b *LinuxBackend) Setup() error
  • func (b *LinuxBackend) Start() error
  • func (b *LinuxBackend) Stop()
• type LinuxContainerSpec
• type MaxContainersReachedError
  • func (e MaxContainersReachedError) Error() string
• type NetInSpec
• type Network
  • func (n *Network) MarshalJSON() ([]byte, error)
  • func (n *Network) UnmarshalJSON(b []byte) error
• type ResourcePool
• type Resources
  • func NewResources(rootuid int, network *Network, bridge string, ports []uint32, ...) *Resources
  • func (r *Resources) AddPort(port uint32)
• type Runner
• type State

Constants

const (
	StateBorn    = State("born")
	StateActive  = State("active")
	StateStopped = State("stopped")
)

Functions

func RegisterHooks

func RegisterHooks(hs hook.HookSet, runner Runner, config process.Env, configurer network.Configurer)

Types

type ActiveProcess

type ActiveProcess struct {
	ID  uint32
	TTY bool
}

type Config

type Config struct {
	Network json.RawMessage `json:"network"`
}

type Container

type Container interface {
	ID() string
	HasProperties(garden.Properties) bool
	GraceTime() time.Duration

	Start() error

	Snapshot(io.Writer) error
	ResourceSpec() LinuxContainerSpec
	Restore(LinuxContainerSpec) error
	Cleanup() error

	LimitDisk(limits garden.DiskLimits) error

	garden.Container
}

type ContainerProvider

type ContainerProvider interface {
	ProvideContainer(LinuxContainerSpec) Container
}

type ContainerRepository

type ContainerRepository interface {
	All() []Container
	Add(Container)
	FindByHandle(string) (Container, error)
	Query(filter func(Container) bool, logger lager.Logger) []Container
	Delete(Container)
}

type FailedToSnapshotError

type FailedToSnapshotError struct {
	OriginalError error
}

func (FailedToSnapshotError) Error

func (e FailedToSnapshotError) Error() string

type HandleExistsError

type HandleExistsError struct {
	Handle string
}

func (HandleExistsError) Error

func (e HandleExistsError) Error() string

type HealthChecker

type HealthChecker interface {
	HealthCheck() error
}

type Limits

type Limits struct {
	Memory    *garden.MemoryLimits
	Disk      *garden.DiskLimits
	Bandwidth *garden.BandwidthLimits
	CPU       *garden.CPULimits
}

type LinuxBackend

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

func New

func New(
	logger lager.Logger,
	resourcePool ResourcePool,
	containerRepo ContainerRepository,
	containerProvider ContainerProvider,
	systemInfo sysinfo.Provider,
	healthCheck HealthChecker,
	snapshotsPath string,
	maxContainers int,
) *LinuxBackend

func (*LinuxBackend) ApplyLimits

func (b *LinuxBackend) ApplyLimits(container Container, limits garden.Limits) error

func (*LinuxBackend) BulkInfo

func (b *LinuxBackend) BulkInfo(handles []string) (map[string]garden.ContainerInfoEntry, error)

func (*LinuxBackend) BulkMetrics

func (b *LinuxBackend) BulkMetrics(handles []string) (map[string]garden.ContainerMetricsEntry, error)

func (*LinuxBackend) Capacity

func (b *LinuxBackend) Capacity() (garden.Capacity, error)

func (*LinuxBackend) Containers

func (b *LinuxBackend) Containers(props garden.Properties) ([]garden.Container, error)

func (*LinuxBackend) Create

func (b *LinuxBackend) Create(spec garden.ContainerSpec) (garden.Container, error)

func (*LinuxBackend) Destroy

func (b *LinuxBackend) Destroy(handle string) error

func (*LinuxBackend) GraceTime

func (b *LinuxBackend) GraceTime(container garden.Container) time.Duration

func (*LinuxBackend) Lookup

func (b *LinuxBackend) Lookup(handle string) (garden.Container, error)

func (*LinuxBackend) Ping

func (b *LinuxBackend) Ping() error

func (*LinuxBackend) Setup

func (b *LinuxBackend) Setup() error

func (*LinuxBackend) Start

func (b *LinuxBackend) Start() error

func (*LinuxBackend) Stop

func (b *LinuxBackend) Stop()

type LinuxContainerSpec

type LinuxContainerSpec struct {
	ID                  string
	ContainerPath       string
	ContainerRootFSPath string

	Resources *Resources
	State     State
	Events    []string

	garden.ContainerSpec

	Limits                  Limits
	Processes               []ActiveProcess
	DefaultProcessSignaller bool

	NetIns  []NetInSpec
	NetOuts []garden.NetOutRule

	Version semver.Version
}

type MaxContainersReachedError

type MaxContainersReachedError struct {
	MaxContainers int
}

func (MaxContainersReachedError) Error

func (e MaxContainersReachedError) Error() string

type NetInSpec

type NetInSpec struct {
	HostPort      uint32
	ContainerPort uint32
}

type Network

type Network struct {
	Subnet *net.IPNet
	IP     net.IP
}

func (*Network) MarshalJSON

func (n *Network) MarshalJSON() ([]byte, error)

func (*Network) UnmarshalJSON

func (n *Network) UnmarshalJSON(b []byte) error

type ResourcePool

type ResourcePool interface {
	Setup() error
	Acquire(garden.ContainerSpec) (LinuxContainerSpec, error)
	Restore(io.Reader) (LinuxContainerSpec, error)
	Release(LinuxContainerSpec) error
	Prune(keep map[string]bool) error
	MaxContainers() int
}

type Resources

type Resources struct {
	RootUID    int
	Network    *Network
	Bridge     string
	Ports      []uint32
	ExternalIP net.IP
	// contains filtered or unexported fields
}

func NewResources

func NewResources(
	rootuid int,
	network *Network,
	bridge string,
	ports []uint32,
	externalIP net.IP,
) *Resources

func (*Resources) AddPort

func (r *Resources) AddPort(port uint32)

type Runner

type Runner interface {
	Run(*exec.Cmd) error
}

type State

type State string