diff options
Diffstat (limited to 'vendor/github.com/rcrowley/go-metrics/gauge.go')
-rw-r--r-- | vendor/github.com/rcrowley/go-metrics/gauge.go | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/vendor/github.com/rcrowley/go-metrics/gauge.go b/vendor/github.com/rcrowley/go-metrics/gauge.go deleted file mode 100644 index cb57a9388..000000000 --- a/vendor/github.com/rcrowley/go-metrics/gauge.go +++ /dev/null @@ -1,120 +0,0 @@ -package metrics - -import "sync/atomic" - -// Gauges hold an int64 value that can be set arbitrarily. -type Gauge interface { - Snapshot() Gauge - Update(int64) - Value() int64 -} - -// GetOrRegisterGauge returns an existing Gauge or constructs and registers a -// new StandardGauge. -func GetOrRegisterGauge(name string, r Registry) Gauge { - if nil == r { - r = DefaultRegistry - } - return r.GetOrRegister(name, NewGauge).(Gauge) -} - -// NewGauge constructs a new StandardGauge. -func NewGauge() Gauge { - if UseNilMetrics { - return NilGauge{} - } - return &StandardGauge{0} -} - -// NewRegisteredGauge constructs and registers a new StandardGauge. -func NewRegisteredGauge(name string, r Registry) Gauge { - c := NewGauge() - if nil == r { - r = DefaultRegistry - } - r.Register(name, c) - return c -} - -// NewFunctionalGauge constructs a new FunctionalGauge. -func NewFunctionalGauge(f func() int64) Gauge { - if UseNilMetrics { - return NilGauge{} - } - return &FunctionalGauge{value: f} -} - -// NewRegisteredFunctionalGauge constructs and registers a new StandardGauge. -func NewRegisteredFunctionalGauge(name string, r Registry, f func() int64) Gauge { - c := NewFunctionalGauge(f) - if nil == r { - r = DefaultRegistry - } - r.Register(name, c) - return c -} - -// GaugeSnapshot is a read-only copy of another Gauge. -type GaugeSnapshot int64 - -// Snapshot returns the snapshot. -func (g GaugeSnapshot) Snapshot() Gauge { return g } - -// Update panics. -func (GaugeSnapshot) Update(int64) { - panic("Update called on a GaugeSnapshot") -} - -// Value returns the value at the time the snapshot was taken. -func (g GaugeSnapshot) Value() int64 { return int64(g) } - -// NilGauge is a no-op Gauge. -type NilGauge struct{} - -// Snapshot is a no-op. -func (NilGauge) Snapshot() Gauge { return NilGauge{} } - -// Update is a no-op. -func (NilGauge) Update(v int64) {} - -// Value is a no-op. -func (NilGauge) Value() int64 { return 0 } - -// StandardGauge is the standard implementation of a Gauge and uses the -// sync/atomic package to manage a single int64 value. -type StandardGauge struct { - value int64 -} - -// Snapshot returns a read-only copy of the gauge. -func (g *StandardGauge) Snapshot() Gauge { - return GaugeSnapshot(g.Value()) -} - -// Update updates the gauge's value. -func (g *StandardGauge) Update(v int64) { - atomic.StoreInt64(&g.value, v) -} - -// Value returns the gauge's current value. -func (g *StandardGauge) Value() int64 { - return atomic.LoadInt64(&g.value) -} - -// FunctionalGauge returns value from given function -type FunctionalGauge struct { - value func() int64 -} - -// Value returns the gauge's current value. -func (g FunctionalGauge) Value() int64 { - return g.value() -} - -// Snapshot returns the snapshot. -func (g FunctionalGauge) Snapshot() Gauge { return GaugeSnapshot(g.Value()) } - -// Update panics. -func (FunctionalGauge) Update(int64) { - panic("Update called on a FunctionalGauge") -} |