e6d6f46b5d
* Add new type of counter: FloatCounter * sometimes you need to count things with more precision than uint64 * FloatCounter also usefull if you need setable Gauge w/o callback func * Fix PR review: * sync.RWMutex -> sync.Mutex * more idiomatic add/sub
42 lines
913 B
Go
42 lines
913 B
Go
package metrics_test
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import (
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"fmt"
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"github.com/VictoriaMetrics/metrics"
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)
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func ExampleFloatCounter() {
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// Define a float64 counter in global scope.
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var fc = metrics.NewFloatCounter(`float_metric_total{label1="value1", label2="value2"}`)
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// Add to the counter when needed.
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for i := 0; i < 10; i++ {
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fc.Add(1.01)
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}
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n := fc.Get()
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fmt.Println(n)
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// Output:
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// 10.1
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}
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func ExampleFloatCounter_vec() {
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for i := 0; i < 3; i++ {
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// Dynamically construct metric name and pass it to GetOrCreateFloatCounter.
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name := fmt.Sprintf(`float_metric_total{label1=%q, label2="%d"}`, "value1", i)
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metrics.GetOrCreateFloatCounter(name).Add(float64(i) + 1.01)
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}
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// Read counter values.
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for i := 0; i < 3; i++ {
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name := fmt.Sprintf(`float_metric_total{label1=%q, label2="%d"}`, "value1", i)
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n := metrics.GetOrCreateFloatCounter(name).Get()
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fmt.Println(n)
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}
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// Output:
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// 1.01
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// 2.01
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// 3.01
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}
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