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metrics: add force option for metric system (#17667)

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This commit is contained in:
Daniel Liu 2024-12-13 14:00:11 +08:00
parent 92a7b64961
commit 61f5a888c3
2 changed files with 41 additions and 5 deletions
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3
metrics/ewma.go
View file

@ -17,9 +17,6 @@ type EWMA interface {
// NewEWMA constructs a new EWMA with the given alpha.
func NewEWMA(alpha float64) EWMA {
if !Enabled {
return NilEWMA{}
}
return &StandardEWMA{alpha: alpha}
}

43
metrics/meter.go
View file

@ -29,6 +29,17 @@ func GetOrRegisterMeter(name string, r Registry) Meter {
return r.GetOrRegister(name, NewMeter).(Meter)
}
// GetOrRegisterMeterForced returns an existing Meter or constructs and registers a
// new StandardMeter no matter the global switch is enabled or not.
// Be sure to unregister the meter from the registry once it is of no use to
// allow for garbage collection.
func GetOrRegisterMeterForced(name string, r Registry) Meter {
if nil == r {
r = DefaultRegistry
}
return r.GetOrRegister(name, NewMeterForced).(Meter)
}
// NewMeter constructs a new StandardMeter and launches a goroutine.
// Be sure to call Stop() once the meter is of no use to allow for garbage collection.
func NewMeter() Meter {
@ -46,8 +57,23 @@ func NewMeter() Meter {
return m
}
// NewMeter constructs and registers a new StandardMeter and launches a
// goroutine.
// NewMeterForced constructs a new StandardMeter and launches a goroutine no matter
// the global switch is enabled or not.
// Be sure to call Stop() once the meter is of no use to allow for garbage collection.
func NewMeterForced() Meter {
m := newStandardMeter()
arbiter.Lock()
defer arbiter.Unlock()
arbiter.meters[m] = struct{}{}
if !arbiter.started {
arbiter.started = true
go arbiter.tick()
}
return m
}
// NewRegisteredMeter constructs and registers a new StandardMeter
// and launches a goroutine.
// Be sure to unregister the meter from the registry once it is of no use to
// allow for garbage collection.
func NewRegisteredMeter(name string, r Registry) Meter {
@ -59,6 +85,19 @@ func NewRegisteredMeter(name string, r Registry) Meter {
return c
}
// NewRegisteredMeterForced constructs and registers a new StandardMeter
// and launches a goroutine no matter the global switch is enabled or not.
// Be sure to unregister the meter from the registry once it is of no use to
// allow for garbage collection.
func NewRegisteredMeterForced(name string, r Registry) Meter {
c := NewMeterForced()
if nil == r {
r = DefaultRegistry
}
r.Register(name, c)
return c
}
// MeterSnapshot is a read-only copy of another Meter.
type MeterSnapshot struct {
count int64