container

package
Version: v0.22.0 Latest Latest
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Published: Mar 1, 2016 License: Apache-2.0 Imports: 4 Imported by: 0

Documentation

Overview

Package container defines types for sub-container events and also defines an interface for container operation handlers.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ClearContainerHandlerFactories

func ClearContainerHandlerFactories()

Clear the known factories.

func DebugInfo

func DebugInfo() map[string][]string

func HasFactories

func HasFactories() bool

Returns whether there are any container handler factories registered.

func RegisterContainerHandlerFactory

func RegisterContainerHandlerFactory(factory ContainerHandlerFactory)

Register a ContainerHandlerFactory. These should be registered from least general to most general as they will be asked in order whether they can handle a particular container.

Types

type ContainerHandler

type ContainerHandler interface {
	// Returns the ContainerReference
	ContainerReference() (info.ContainerReference, error)

	// Returns container's isolation spec.
	GetSpec() (info.ContainerSpec, error)

	// Returns the current stats values of the container.
	GetStats() (*info.ContainerStats, error)

	// Returns the subcontainers of this container.
	ListContainers(listType ListType) ([]info.ContainerReference, error)

	// Returns the threads inside this container.
	ListThreads(listType ListType) ([]int, error)

	// Returns the processes inside this container.
	ListProcesses(listType ListType) ([]int, error)

	// Registers a channel to listen for events affecting subcontainers (recursively).
	WatchSubcontainers(events chan SubcontainerEvent) error

	// Stops watching for subcontainer changes.
	StopWatchingSubcontainers() error

	// Returns absolute cgroup path for the requested resource.
	GetCgroupPath(resource string) (string, error)

	// Returns container labels, if available.
	GetContainerLabels() map[string]string

	// Returns whether the container still exists.
	Exists() bool

	// Cleanup frees up any resources being held like fds or go routines, etc.
	Cleanup()

	// Start starts any necessary background goroutines - must be cleaned up in Cleanup().
	// It is expected that most implementations will be a no-op.
	Start()
}

Interface for container operation handlers.

func NewContainerHandler

func NewContainerHandler(name string, inHostNamespace bool) (ContainerHandler, bool, error)

Create a new ContainerHandler for the specified container.

type ContainerHandlerFactory

type ContainerHandlerFactory interface {
	// Create a new ContainerHandler using this factory. CanHandleAndAccept() must have returned true.
	NewContainerHandler(name string, inHostNamespace bool) (c ContainerHandler, err error)

	// Returns whether this factory can handle and accept the specified container.
	CanHandleAndAccept(name string) (handle bool, accept bool, err error)

	// Name of the factory.
	String() string

	// Returns debugging information. Map of lines per category.
	DebugInfo() map[string][]string
}

type ListType

type ListType int

ListType describes whether listing should be just for a specific container or performed recursively.

const (
	ListSelf ListType = iota
	ListRecursive
)

type MetricKind added in v0.22.0

type MetricKind string

MetricKind represents the kind of metrics that cAdvisor exposes.

const (
	CpuUsageMetrics        MetricKind = "cpu"
	MemoryUsageMetrics     MetricKind = "memory"
	CpuLoadMetrics         MetricKind = "cpuLoad"
	DiskIOMetrics          MetricKind = "diskIO"
	DiskUsageMetrics       MetricKind = "disk"
	NetworkUsageMetrics    MetricKind = "network"
	NetworkTcpUsageMetrics MetricKind = "tcp"
	AppMetrics             MetricKind = "app"
)

func (MetricKind) String added in v0.22.0

func (mk MetricKind) String() string

type MetricSet added in v0.22.0

type MetricSet map[MetricKind]struct{}

func (MetricSet) Add added in v0.22.0

func (ms MetricSet) Add(mk MetricKind)

func (MetricSet) Has added in v0.22.0

func (ms MetricSet) Has(mk MetricKind) bool

type SubcontainerEvent

type SubcontainerEvent struct {
	// The type of event that occurred.
	EventType SubcontainerEventType

	// The full container name of the container where the event occurred.
	Name string
}

SubcontainerEvent represents a

type SubcontainerEventType

type SubcontainerEventType int

SubcontainerEventType indicates an addition or deletion event.

const (
	SubcontainerAdd SubcontainerEventType = iota
	SubcontainerDelete
)

Directories

Path Synopsis
Handler for Docker containers.
Handler for Docker containers.
Unmarshal's a Containers description json file.
Unmarshal's a Containers description json file.

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