diskstats

Documentation

Overview

Package diskstats handles processing of IO statistics of each block device, /proc/diskstats. Instead of returning a Go struct, it returns Flatbuffer serialized bytes. A function to deserialize the Flatbuffer serialized bytes into a structs.DiskStats struct is provided.

Note: the package name is diskstats and not the final element of the import path (flat).

Index

• func Deserialize(p []byte) *structs.DiskStats
• func Get() (p []byte, err error)
• func NewTicker(d time.Duration) (joe.Tocker, error)
• func Serialize(stts *structs.DiskStats) (p []byte, err error)
• type Profiler
  • func NewProfiler() (prof *Profiler, err error)
  • func (prof *Profiler) Get() ([]byte, error)
  • func (prof *Profiler) Serialize(stts *structs.DiskStats) []byte
• type Ticker
  • func (t *Ticker) Close()
  • func (t *Ticker) Run()

Functions

func Deserialize

func Deserialize(p []byte) *structs.DiskStats

Deserialize takes some Flatbuffer serialized bytes and deserialize's them as a structs.DiskStats.

func Get

func Get() (p []byte, err error)

Get returns information about current IO statistics of the block devices as Flatbuffer serialized bytes using the package's global Profiler.

func NewTicker

func NewTicker(d time.Duration) (joe.Tocker, error)

NewTicker returns a new Ticker containing a Data channel that delivers the data at intervals and an error channel that delivers any errors encountered. Stop the ticker to signal the ticker to stop running. Stopping the ticker does not close the Data channel; call Close to close both the ticker and the data channel.

func Serialize

func Serialize(stts *structs.DiskStats) (p []byte, err error)

Serialize serializes structs.DiskStats as Flatbuffer serialized bytes using the package's global Profiler.

Types

type Profiler

type Profiler struct {
	*stats.Profiler
	*fb.Builder
}

Profiler is used to process the /proc/diskstast file.

func NewProfiler

func NewProfiler() (prof *Profiler, err error)

Returns an initialized Profiler; ready to use.

func (*Profiler) Get

func (prof *Profiler) Get() ([]byte, error)

Get returns information about current IO statistics of the block devices as Flatbuffer serialized bytes.

func (*Profiler) Serialize

func (prof *Profiler) Serialize(stts *structs.DiskStats) []byte

Serialize serializes structs.DiskStats as Flatbuffer serialized bytes.

type Ticker

type Ticker struct {
	*joe.Ticker
	Data chan []byte
	*Profiler
}

Ticker delivers the system's IO statistics of the block devices at intervals.

func (*Ticker) Close

func (t *Ticker) Close()

Close closes the ticker resources.

func (*Ticker) Run

func (t *Ticker) Run()

Run runs the ticker.