stats

Documentation

Index

• func CalcEventCostUs(start, end rpcinfo.Event) uint64
• func Record(ctx context.Context, ri rpcinfo.RPCInfo, event stats.Event, err error)
• type Controller
  • func (c *Controller) Append(col stats.Tracer)
  • func (c *Controller) DoFinish(ctx context.Context, ri rpcinfo.RPCInfo, err error)
  • func (c *Controller) DoStart(ctx context.Context, ri rpcinfo.RPCInfo) context.Context
  • func (c *Controller) HasTracer() bool

Functions

func CalcEventCostUs

func CalcEventCostUs(start, end rpcinfo.Event) uint64

CalcEventCostUs calculates the duration between start and end and returns in microsecond.

func Record

func Record(ctx context.Context, ri rpcinfo.RPCInfo, event stats.Event, err error)

Record records the event to RPCStats.

Types

type Controller

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

Controller controls tracers.

func (*Controller) Append

func (c *Controller) Append(col stats.Tracer)

Append appends a new tracer to the controller.

func (*Controller) DoFinish

func (c *Controller) DoFinish(ctx context.Context, ri rpcinfo.RPCInfo, err error)

DoFinish calls the tracers in reversed order.

func (*Controller) DoStart

func (c *Controller) DoStart(ctx context.Context, ri rpcinfo.RPCInfo) context.Context

DoStart starts the tracers.

func (*Controller) HasTracer

func (c *Controller) HasTracer() bool

HasTracer reports whether there exists any tracer.