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Version: v0.0.0-...-3ab4a19 Latest Latest
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Published: Feb 19, 2015 License: Apache-2.0 Imports: 2 Imported by: 0

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Constants

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const VERSION = "0.6.2"

Version of cAdvisor.

Variables

This section is empty.

Functions

This section is empty.

Types

type ContainerInfo

type ContainerInfo struct {
	ContainerReference

	// The direct subcontainers of the current container.
	Subcontainers []ContainerReference `json:"subcontainers,omitempty"`

	// The isolation used in the container.
	Spec ContainerSpec `json:"spec,omitempty"`

	// Historical statistics gathered from the container.
	Stats []*ContainerStats `json:"stats,omitempty"`
}

func (*ContainerInfo) Eq

func (self *ContainerInfo) Eq(b *ContainerInfo) bool

ContainerInfo may be (un)marshaled by json or other en/decoder. In that case, the Timestamp field in each stats/sample may not be precisely en/decoded. This will lead to small but acceptable differences between a ContainerInfo and its encode-then-decode version. Eq() is used to compare two ContainerInfo accepting small difference (<10ms) of Time fields.

func (*ContainerInfo) StatsAfter

func (self *ContainerInfo) StatsAfter(ref time.Time) []*ContainerStats

func (*ContainerInfo) StatsEndTime

func (self *ContainerInfo) StatsEndTime() time.Time

func (*ContainerInfo) StatsStartTime

func (self *ContainerInfo) StatsStartTime() time.Time

type ContainerInfoRequest

type ContainerInfoRequest struct {
	// Max number of stats to return.
	NumStats int `json:"num_stats,omitempty"`
}

ContainerInfoQuery is used when users check a container info from the REST api. It specifies how much data users want to get about a container

type ContainerReference

type ContainerReference struct {
	// The absolute name of the container. This is unique on the machine.
	Name string `json:"name"`

	// Other names by which the container is known within a certain namespace.
	// This is unique within that namespace.
	Aliases []string `json:"aliases,omitempty"`

	// Namespace under which the aliases of a container are unique.
	// An example of a namespace is "docker" for Docker containers.
	Namespace string `json:"namespace,omitempty"`
}

Container reference contains enough information to uniquely identify a container

type ContainerSpec

type ContainerSpec struct {
	HasCpu bool    `json:"has_cpu"`
	Cpu    CpuSpec `json:"cpu,omitempty"`

	HasMemory bool       `json:"has_memory"`
	Memory    MemorySpec `json:"memory,omitempty"`

	HasNetwork bool `json:"has_network"`

	HasFilesystem bool `json:"has_filesystem"`
}

type ContainerStats

type ContainerStats struct {
	// The time of this stat point.
	Timestamp time.Time    `json:"timestamp"`
	Cpu       CpuStats     `json:"cpu,omitempty"`
	DiskIo    DiskIoStats  `json:"diskio,omitempty"`
	Memory    MemoryStats  `json:"memory,omitempty"`
	Network   NetworkStats `json:"network,omitempty"`

	// Filesystem statistics
	Filesystem []FsStats `json:"filesystem,omitempty"`
}

func (*ContainerStats) Eq

This function is useful because we do not require precise time representation.

func (*ContainerStats) StatsEq

func (a *ContainerStats) StatsEq(b *ContainerStats) bool

Checks equality of the stats values.

type CpuSpec

type CpuSpec struct {
	Limit    uint64 `json:"limit"`
	MaxLimit uint64 `json:"max_limit"`
	Mask     string `json:"mask,omitempty"`
}

type CpuStats

type CpuStats struct {
	Usage struct {
		// Total CPU usage.
		// Units: nanoseconds
		Total uint64 `json:"total"`

		// Per CPU/core usage of the container.
		// Unit: nanoseconds.
		PerCpu []uint64 `json:"per_cpu_usage,omitempty"`

		// Time spent in user space.
		// Unit: nanoseconds
		User uint64 `json:"user"`

		// Time spent in kernel space.
		// Unit: nanoseconds
		System uint64 `json:"system"`
	} `json:"usage"`
	Load int32 `json:"load"`
}

All CPU usage metrics are cumulative from the creation of the container

type DiskIoStats

type DiskIoStats struct {
	IoServiceBytes []PerDiskStats `json:"io_service_bytes,omitempty"`
	IoServiced     []PerDiskStats `json:"io_serviced,omitempty"`
	IoQueued       []PerDiskStats `json:"io_queued,omitempty"`
	Sectors        []PerDiskStats `json:"sectors,omitempty"`
	IoServiceTime  []PerDiskStats `json:"io_service_time,omitempty"`
	IoWaitTime     []PerDiskStats `json:"io_wait_time,omitempty"`
	IoMerged       []PerDiskStats `json:"io_merged,omitempty"`
	IoTime         []PerDiskStats `json:"io_time,omitempty"`
}

type FsInfo

type FsInfo struct {
	// Block device associated with the filesystem.
	Device string `json:"device"`

	// Total number of bytes available on the filesystem.
	Capacity uint64 `json:"capacity"`
}

type FsStats

type FsStats struct {
	// The block device name associated with the filesystem.
	Device string `json:"device,omitempty"`

	// Number of bytes that can be consumed by the container on this filesystem.
	Limit uint64 `json:"capacity"`

	// Number of bytes that is consumed by the container on this filesystem.
	Usage uint64 `json:"usage"`

	// Number of reads completed
	// This is the total number of reads completed successfully.
	ReadsCompleted uint64 `json:"reads_completed"`

	// Number of reads merged
	// Reads and writes which are adjacent to each other may be merged for
	// efficiency.  Thus two 4K reads may become one 8K read before it is
	// ultimately handed to the disk, and so it will be counted (and queued)
	// as only one I/O.  This field lets you know how often this was done.
	ReadsMerged uint64 `json:"reads_merged"`

	// Number of sectors read
	// This is the total number of sectors read successfully.
	SectorsRead uint64 `json:"sectors_read"`

	// Number of milliseconds spent reading
	// This is the total number of milliseconds spent by all reads (as
	// measured from __make_request() to end_that_request_last()).
	ReadTime uint64 `json:"read_time"`

	// Number of writes completed
	// This is the total number of writes completed successfully.
	WritesCompleted uint64 `json:"writes_completed"`

	// Number of writes merged
	// See the description of reads merged.
	WritesMerged uint64 `json:"writes_merged"`

	// Number of sectors written
	// This is the total number of sectors written successfully.
	SectorsWritten uint64 `json:"sectors_written"`

	// Number of milliseconds spent writing
	// This is the total number of milliseconds spent by all writes (as
	// measured from __make_request() to end_that_request_last()).
	WriteTime uint64 `json:"write_time"`

	// Number of I/Os currently in progress
	// The only field that should go to zero. Incremented as requests are
	// given to appropriate struct request_queue and decremented as they finish.
	IoInProgress uint64 `json:"io_in_progress"`

	// Number of milliseconds spent doing I/Os
	// This field increases so long as field 9 is nonzero.
	IoTime uint64 `json:"io_time"`

	// weighted number of milliseconds spent doing I/Os
	// This field is incremented at each I/O start, I/O completion, I/O
	// merge, or read of these stats by the number of I/Os in progress
	// (field 9) times the number of milliseconds spent doing I/O since the
	// last update of this field.  This can provide an easy measure of both
	// I/O completion time and the backlog that may be accumulating.
	WeightedIoTime uint64 `json:"weighted_io_time"`
}

type MachineInfo

type MachineInfo struct {
	// The number of cores in this machine.
	NumCores int `json:"num_cores"`

	// The amount of memory (in bytes) in this machine
	MemoryCapacity int64 `json:"memory_capacity"`

	// Filesystems on this machine.
	Filesystems []FsInfo `json:"filesystems"`
}

type MachineInfoFactory

type MachineInfoFactory interface {
	GetMachineInfo() (*MachineInfo, error)
	GetVersionInfo() (*VersionInfo, error)
}

type MemorySpec

type MemorySpec struct {
	// The amount of memory requested. Default is unlimited (-1).
	// Units: bytes.
	Limit uint64 `json:"limit,omitempty"`

	// The amount of guaranteed memory.  Default is 0.
	// Units: bytes.
	Reservation uint64 `json:"reservation,omitempty"`

	// The amount of swap space requested. Default is unlimited (-1).
	// Units: bytes.
	SwapLimit uint64 `json:"swap_limit,omitempty"`
}

type MemoryStats

type MemoryStats struct {
	// Current memory usage, this includes all memory regardless of when it was
	// accessed.
	// Units: Bytes.
	Usage uint64 `json:"usage"`

	// The amount of working set memory, this includes recently accessed memory,
	// dirty memory, and kernel memory. Working set is <= "usage".
	// Units: Bytes.
	WorkingSet uint64 `json:"working_set"`

	ContainerData    MemoryStatsMemoryData `json:"container_data,omitempty"`
	HierarchicalData MemoryStatsMemoryData `json:"hierarchical_data,omitempty"`
}

type MemoryStatsMemoryData

type MemoryStatsMemoryData struct {
	Pgfault    uint64 `json:"pgfault"`
	Pgmajfault uint64 `json:"pgmajfault"`
}

type NetworkStats

type NetworkStats struct {
	// Cumulative count of bytes received.
	RxBytes uint64 `json:"rx_bytes"`
	// Cumulative count of packets received.
	RxPackets uint64 `json:"rx_packets"`
	// Cumulative count of receive errors encountered.
	RxErrors uint64 `json:"rx_errors"`
	// Cumulative count of packets dropped while receiving.
	RxDropped uint64 `json:"rx_dropped"`
	// Cumulative count of bytes transmitted.
	TxBytes uint64 `json:"tx_bytes"`
	// Cumulative count of packets transmitted.
	TxPackets uint64 `json:"tx_packets"`
	// Cumulative count of transmit errors encountered.
	TxErrors uint64 `json:"tx_errors"`
	// Cumulative count of packets dropped while transmitting.
	TxDropped uint64 `json:"tx_dropped"`
}

type PerDiskStats

type PerDiskStats struct {
	Major uint64            `json:"major"`
	Minor uint64            `json:"minor"`
	Stats map[string]uint64 `json:"stats"`
}

type VersionInfo

type VersionInfo struct {
	// Kernel version.
	KernelVersion string `json:"kernel_version"`

	// OS image being used for cadvisor container, or host image if running on host directly.
	ContainerOsVersion string `json:"container_os_version"`

	// Docker version.
	DockerVersion string `json:"docker_version"`

	// cAdvisor version.
	CadvisorVersion string `json:"cadvisor_version"`
}

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