53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
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package metrics
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// The MetricSink interface is used to transmit metrics information
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// to an external system
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type MetricSink interface {
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// A Gauge should retain the last value it is set to
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SetGauge(key []string, val float32)
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// Should emit a Key/Value pair for each call
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EmitKey(key []string, val float32)
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// Counters should accumulate values
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IncrCounter(key []string, val float32)
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// Samples are for timing information, where quantiles are used
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AddSample(key []string, val float32)
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}
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// BlackholeSink is used to just blackhole messages
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type BlackholeSink struct{}
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func (*BlackholeSink) SetGauge(key []string, val float32) {}
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func (*BlackholeSink) EmitKey(key []string, val float32) {}
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func (*BlackholeSink) IncrCounter(key []string, val float32) {}
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func (*BlackholeSink) AddSample(key []string, val float32) {}
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// FanoutSink is used to sink to fanout values to multiple sinks
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type FanoutSink []MetricSink
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func (fh FanoutSink) SetGauge(key []string, val float32) {
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for _, s := range fh {
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s.SetGauge(key, val)
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}
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}
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func (fh FanoutSink) EmitKey(key []string, val float32) {
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for _, s := range fh {
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s.EmitKey(key, val)
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}
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}
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func (fh FanoutSink) IncrCounter(key []string, val float32) {
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for _, s := range fh {
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s.IncrCounter(key, val)
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}
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}
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func (fh FanoutSink) AddSample(key []string, val float32) {
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for _, s := range fh {
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s.AddSample(key, val)
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}
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}
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