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Package gardener

v0.0.0-...-3da697a
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The latest major version is .

Published: 5 days ago | License: Apache-2.0 | Module: code.cloudfoundry.org/guardian

Index

Constants

const BridgeIPKey = "garden.network.host-ip"
const CleanupRetryLimit = 30
const CleanupRetrySleep = 3 * time.Second
const ContainerIPKey = "garden.network.container-ip"
const ExternalIPKey = "garden.network.external-ip"
const GraceTimeKey = "garden.grace-time"
const MappedPortsKey = "garden.network.mapped-ports"
const RawRootFSScheme = "raw"
const VolumizerSession = "volumizer"

Variables

var ErrGraphDisabled = errors.New("no image plugin configured")

func NewBulkStarter

func NewBulkStarter(starters []Starter) *bulkStarter

type ActualContainerMetrics

type ActualContainerMetrics struct {
	StatsContainerMetrics
	CPUEntitlement uint64
}

type BulkStarter

type BulkStarter interface {
	StartAll() error
}

type CommandFactory

type CommandFactory func(ctrPID, uid, gid int, mode os.FileMode, recreate bool, paths ...string) *exec.Cmd

type Containerizer

type Containerizer interface {
	Create(log lager.Logger, desiredContainerSpec spec.DesiredContainerSpec) error
	Handles() ([]string, error)

	StreamIn(log lager.Logger, handle string, streamInSpec garden.StreamInSpec) error
	StreamOut(log lager.Logger, handle string, streamOutSpec garden.StreamOutSpec) (io.ReadCloser, error)

	Run(log lager.Logger, handle string, processSpec garden.ProcessSpec, io garden.ProcessIO) (garden.Process, error)
	Attach(log lager.Logger, handle string, processGUID string, io garden.ProcessIO) (garden.Process, error)
	Stop(log lager.Logger, handle string, kill bool) error
	Destroy(log lager.Logger, handle string) error
	RemoveBundle(log lager.Logger, handle string) error

	Info(log lager.Logger, handle string) (spec.ActualContainerSpec, error)
	Metrics(log lager.Logger, handle string) (ActualContainerMetrics, error)
	WatchRuntimeEvents(log lager.Logger) error

	Shutdown() error
}

type Gardener

type Gardener struct {
	// SysInfoProvider returns total memory and total disk
	SysInfoProvider SysInfoProvider

	// Containerizer runs and manages linux containers
	Containerizer Containerizer

	// UidGenerator generates unique ids for containers
	UidGenerator UidGenerator

	// BulkStarter runs any needed Starters that do start-up tasks (e.g. setting up cgroups)
	BulkStarter BulkStarter

	// Networker creates a network for containers
	Networker Networker

	// Volumizer creates volumes for containers
	Volumizer Volumizer

	Logger lager.Logger

	// PropertyManager creates map of container properties
	PropertyManager PropertyManager

	Sleep Sleeper

	// MaxContainers limits the advertised container capacity
	MaxContainers uint64

	Restorer Restorer

	PeaCleaner PeaCleaner

	AllowPrivilgedContainers bool
}

Gardener orchestrates other components to implement the Garden API

func New

func New(
	uidGenerator UidGenerator,
	bulkStarter BulkStarter,
	sysInfoProvider SysInfoProvider,
	networker Networker,
	volumizer Volumizer,
	containerizer Containerizer,
	propertyManager PropertyManager,
	restorer Restorer,
	peaCleaner PeaCleaner,
	logger lager.Logger,
	maxContainers uint64,
	allowPrivilegedContainers bool,
) *Gardener

func (*Gardener) BulkInfo

func (g *Gardener) BulkInfo(handles []string) (map[string]garden.ContainerInfoEntry, error)

func (*Gardener) BulkMetrics

func (g *Gardener) BulkMetrics(handles []string) (map[string]garden.ContainerMetricsEntry, error)

func (*Gardener) Capacity

func (g *Gardener) Capacity() (garden.Capacity, error)

func (*Gardener) Cleanup

func (g *Gardener) Cleanup(log lager.Logger) error

func (*Gardener) Containers

func (g *Gardener) Containers(props garden.Properties) ([]garden.Container, error)

func (*Gardener) Create

func (g *Gardener) Create(containerSpec garden.ContainerSpec) (ctr garden.Container, err error)

Create creates a container by combining the results of networker.Network, volumizer.Create and containzer.Create.

func (*Gardener) Destroy

func (g *Gardener) Destroy(handle string) error

func (*Gardener) GraceTime

func (g *Gardener) GraceTime(container garden.Container) time.Duration

func (*Gardener) Lookup

func (g *Gardener) Lookup(handle string) (garden.Container, error)

func (*Gardener) Ping

func (g *Gardener) Ping() error

func (*Gardener) Start

func (g *Gardener) Start() error

func (*Gardener) Stop

func (g *Gardener) Stop() error

type Networker

type Networker interface {
	SetupBindMounts(log lager.Logger, handle string, privileged bool, rootfsPath string) ([]garden.BindMount, error)
	Network(log lager.Logger, spec garden.ContainerSpec, pid int) error
	Capacity() uint64
	Destroy(log lager.Logger, handle string) error
	NetIn(log lager.Logger, handle string, hostPort, containerPort uint32) (uint32, uint32, error)
	BulkNetOut(log lager.Logger, handle string, rules []garden.NetOutRule) error
	NetOut(log lager.Logger, handle string, rule garden.NetOutRule) error
	Restore(log lager.Logger, handle string) error
}

type NoopRestorer

type NoopRestorer struct{}

func (*NoopRestorer) Restore

func (n *NoopRestorer) Restore(_ lager.Logger, handles []string) []string

type NoopVolumizer

type NoopVolumizer struct{}

func (NoopVolumizer) Capacity

func (NoopVolumizer) Capacity(lager.Logger) (uint64, error)

func (NoopVolumizer) Create

func (NoopVolumizer) Create(lager.Logger, string, RootfsSpec) (specs.Spec, error)

func (NoopVolumizer) Destroy

func (NoopVolumizer) Destroy(lager.Logger, string) error

func (NoopVolumizer) GC

func (NoopVolumizer) GC(lager.Logger) error

func (NoopVolumizer) Metrics

func (NoopVolumizer) Metrics(lager.Logger, string, bool) (garden.ContainerDiskStat, error)

type PeaCleaner

type PeaCleaner interface {
	CleanAll(logger lager.Logger) error
	Clean(logger lager.Logger, handle string) error
}

type PropertyManager

type PropertyManager interface {
	All(handle string) (props garden.Properties, err error)
	Set(handle string, name string, value string)
	Remove(handle string, name string) error
	Get(handle string, name string) (string, bool)
	MatchesAll(handle string, props garden.Properties) bool
	DestroyKeySpace(string) error
}

type Restorer

type Restorer interface {
	Restore(logger lager.Logger, handles []string) []string
}

func NewRestorer

func NewRestorer(networker Networker) Restorer

type RootfsSpec

type RootfsSpec struct {
	RootFS     *url.URL
	Username   string `json:"-"`
	Password   string `json:"-"`
	Namespaced bool
	QuotaSize  int64
	QuotaScope garden.DiskLimitScope
}

TODO GoRename RootfsSpec

type Sleeper

type Sleeper func(time.Duration)

type Starter

type Starter interface {
	Start() error
}

type StatsContainerMetrics

type StatsContainerMetrics struct {
	CPU    garden.ContainerCPUStat
	Memory garden.ContainerMemoryStat
	Pid    garden.ContainerPidStat
	Age    time.Duration
}

type SysInfoProvider

type SysInfoProvider interface {
	TotalMemory() (uint64, error)
	TotalDisk() (uint64, error)
	CPUCores() (int, error)
}

type UidGenerator

type UidGenerator interface {
	Generate() string
}

type UidGeneratorFunc

type UidGeneratorFunc func() string

func (UidGeneratorFunc) Generate

func (fn UidGeneratorFunc) Generate() string

type VolumeCreator

type VolumeCreator interface {
	Create(log lager.Logger, handle string, spec RootfsSpec) (specs.Spec, error)
}

type VolumeDestroyMetricsGC

type VolumeDestroyMetricsGC interface {
	Destroy(log lager.Logger, handle string) error
	Metrics(log lager.Logger, handle string, namespaced bool) (garden.ContainerDiskStat, error)
	GC(log lager.Logger) error
	Capacity(log lager.Logger) (uint64, error)
}

type VolumeProvider

type VolumeProvider struct {
	VolumeCreator VolumeCreator
	VolumeDestroyMetricsGC

	ContainerRootUID int
	ContainerRootGID int
	// contains filtered or unexported fields
}

func NewVolumeProvider

func NewVolumeProvider(creator VolumeCreator, manager VolumeDestroyMetricsGC, commandrunner commandrunner.CommandRunner, rootUID, rootGID int) *VolumeProvider

func (*VolumeProvider) Create

func (v *VolumeProvider) Create(log lager.Logger, spec garden.ContainerSpec) (specs.Spec, error)

type Volumizer

type Volumizer interface {
	Create(log lager.Logger, spec garden.ContainerSpec) (specs.Spec, error)
	VolumeDestroyMetricsGC
}

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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