vikunja-api/vendor/github.com/spf13/jwalterweatherman/log_counter.go

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// Copyright © 2016 Steve Francia <spf@spf13.com>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package jwalterweatherman
import (
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"io"
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"sync/atomic"
)
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// Counter is an io.Writer that increments a counter on Write.
type Counter struct {
count uint64
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}
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func (c *Counter) incr() {
atomic.AddUint64(&c.count, 1)
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}
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// Reset resets the counter.
func (c *Counter) Reset() {
atomic.StoreUint64(&c.count, 0)
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}
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// Count returns the current count.
func (c *Counter) Count() uint64 {
return atomic.LoadUint64(&c.count)
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}
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func (c *Counter) Write(p []byte) (n int, err error) {
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c.incr()
return len(p), nil
}
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// LogCounter creates a LogListener that counts log statements >= the given threshold.
func LogCounter(counter *Counter, t1 Threshold) LogListener {
return func(t2 Threshold) io.Writer {
if t2 < t1 {
// Not interested in this threshold.
return nil
}
return counter
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}
}