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26 lines
488 B
Go
26 lines
488 B
Go
package rateio
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import "io"
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type reader struct {
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io.Reader
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Limiter
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}
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// Read reads data into p.
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// Returns ErrRateExceeded error if our specified read is exceeded.
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func (r *reader) Read(p []byte) (n int, err error) {
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n, err = r.Reader.Read(p)
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if err != nil {
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return
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}
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err = r.Limiter.Count(n)
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return
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}
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// NewReader proxies an io.Reader but keeps track of bytes read based on our Limiter.
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func NewReader(r io.Reader, limiter Limiter) io.Reader {
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return &reader{r, limiter}
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}
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