selector

Documentation

Index

• Constants
• type DebugReporter
• type LVSWRRSelector
  • func NewLVSWRRSelector(timeout time.Duration) *LVSWRRSelector
  • func (ls *LVSWRRSelector) Add(url string, upstreamType UpstreamType, weight int32) (err error)
  • func (ls *LVSWRRSelector) Get() *Upstream
  • func (ls *LVSWRRSelector) ReportUpstreamStatus(upstream *Upstream, upstreamStatus upstreamStatus)
  • func (ls *LVSWRRSelector) ReportWeights()
  • func (ls *LVSWRRSelector) StartEvaluate()
• type NginxWRRSelector
  • func NewNginxWRRSelector(timeout time.Duration) *NginxWRRSelector
  • func (ws *NginxWRRSelector) Add(url string, upstreamType UpstreamType, weight int32) (err error)
  • func (ws *NginxWRRSelector) Get() *Upstream
  • func (ws *NginxWRRSelector) ReportUpstreamStatus(upstream *Upstream, upstreamStatus upstreamStatus)
  • func (ws *NginxWRRSelector) ReportWeights()
  • func (ws *NginxWRRSelector) StartEvaluate()
• type RandomSelector
  • func NewRandomSelector() *RandomSelector
  • func (rs *RandomSelector) Add(url string, upstreamType UpstreamType) (err error)
  • func (rs *RandomSelector) Get() *Upstream
  • func (rs *RandomSelector) ReportUpstreamStatus(upstream *Upstream, upstreamStatus upstreamStatus)
  • func (rs *RandomSelector) StartEvaluate()
• type Selector
• type Upstream
  • func (u Upstream) String() string
• type UpstreamType

Constants

const (
	// when query upstream timeout, usually upstream is unavailable for a long time
	Timeout upstreamStatus = iota

	// when query upstream return 5xx response, upstream still alive, maybe just a lof of query for him
	Error

	// when query upstream ok, means upstream is available
	OK
)

Types

type DebugReporter

type DebugReporter interface {
	// ReportWeights starts a goroutine to report all upstream weights, recommend interval is 15s
	ReportWeights()
}

type LVSWRRSelector

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

func NewLVSWRRSelector

func NewLVSWRRSelector(timeout time.Duration) *LVSWRRSelector

func (*LVSWRRSelector) Add

func (ls *LVSWRRSelector) Add(url string, upstreamType UpstreamType, weight int32) (err error)

func (*LVSWRRSelector) Get

func (ls *LVSWRRSelector) Get() *Upstream

func (*LVSWRRSelector) ReportUpstreamStatus

func (ls *LVSWRRSelector) ReportUpstreamStatus(upstream *Upstream, upstreamStatus upstreamStatus)

func (*LVSWRRSelector) ReportWeights

func (ls *LVSWRRSelector) ReportWeights()

func (*LVSWRRSelector) StartEvaluate

func (ls *LVSWRRSelector) StartEvaluate()

type NginxWRRSelector

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

func NewNginxWRRSelector

func NewNginxWRRSelector(timeout time.Duration) *NginxWRRSelector

func (*NginxWRRSelector) Add

func (ws *NginxWRRSelector) Add(url string, upstreamType UpstreamType, weight int32) (err error)

func (*NginxWRRSelector) Get

func (ws *NginxWRRSelector) Get() *Upstream

nginx wrr like

func (*NginxWRRSelector) ReportUpstreamStatus

func (ws *NginxWRRSelector) ReportUpstreamStatus(upstream *Upstream, upstreamStatus upstreamStatus)

func (*NginxWRRSelector) ReportWeights

func (ws *NginxWRRSelector) ReportWeights()

func (*NginxWRRSelector) StartEvaluate

func (ws *NginxWRRSelector) StartEvaluate()

type RandomSelector

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

func NewRandomSelector

func NewRandomSelector() *RandomSelector

func (*RandomSelector) Add

func (rs *RandomSelector) Add(url string, upstreamType UpstreamType) (err error)

func (*RandomSelector) Get

func (rs *RandomSelector) Get() *Upstream

func (*RandomSelector) ReportUpstreamStatus

func (rs *RandomSelector) ReportUpstreamStatus(upstream *Upstream, upstreamStatus upstreamStatus)

func (*RandomSelector) StartEvaluate

func (rs *RandomSelector) StartEvaluate()

type Selector

type Selector interface {
	// Get returns a upstream
	Get() *Upstream

	// StartEvaluate start upstream evaluation loop
	StartEvaluate()

	// ReportUpstreamStatus report upstream status
	ReportUpstreamStatus(upstream *Upstream, upstreamStatus upstreamStatus)
}

type Upstream

type Upstream struct {
	Type        UpstreamType
	URL         string
	RequestType string
	// contains filtered or unexported fields
}

func (Upstream) String

func (u Upstream) String() string

type UpstreamType

type UpstreamType int

const (
	Google UpstreamType = iota
	IETF
)