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4cd82b6802
These are the vendor files needed for Prometheus support. I have not been able to figure out how to do this properly with gopkg.
32 lines
615 B
Go
32 lines
615 B
Go
package datacounter
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import (
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"io"
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"sync/atomic"
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)
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// ReaderCounter is counter for io.Reader
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type ReaderCounter struct {
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io.Reader
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count uint64
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reader io.Reader
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}
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// NewReaderCounter function for create new ReaderCounter
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func NewReaderCounter(r io.Reader) *ReaderCounter {
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return &ReaderCounter{
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reader: r,
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}
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}
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func (counter *ReaderCounter) Read(buf []byte) (int, error) {
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n, err := counter.reader.Read(buf)
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atomic.AddUint64(&counter.count, uint64(n))
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return n, err
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}
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// Count function return counted bytes
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func (counter *ReaderCounter) Count() uint64 {
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return atomic.LoadUint64(&counter.count)
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}
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