forked from FactomProject/factomd
/
metricsReadWriter.go
60 lines (51 loc) · 1.24 KB
/
metricsReadWriter.go
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package p2p
import (
"io"
)
type StatsCollector interface {
Collect() (mw uint64, mr uint64, bw uint64, br uint64)
}
type ReadWriteCollector interface {
io.Reader
io.Writer
StatsCollector
}
// MetricsReadWriter is a wrapper for net.Conn that allows the package to
// observe the actual amount of bytes passing through it
type MetricsReadWriter struct {
rw io.ReadWriter
messagesWritten uint64
messagesRead uint64
bytesWritten uint64
bytesRead uint64
}
var _ StatsCollector = (*MetricsReadWriter)(nil)
var _ ReadWriteCollector = (*MetricsReadWriter)(nil)
func NewMetricsReadWriter(rw io.ReadWriter) *MetricsReadWriter {
sc := new(MetricsReadWriter)
sc.rw = rw
return sc
}
func (sc *MetricsReadWriter) Write(p []byte) (int, error) {
n, e := sc.rw.Write(p)
sc.messagesWritten++
sc.bytesWritten += uint64(n)
return n, e
}
func (sc *MetricsReadWriter) Read(p []byte) (int, error) {
n, e := sc.rw.Read(p)
sc.messagesRead++
sc.bytesRead += uint64(n)
return n, e
}
func (sc *MetricsReadWriter) Collect() (mw uint64, mr uint64, bw uint64, br uint64) {
mw = sc.messagesWritten
sc.messagesWritten = 0
mr = sc.messagesRead
sc.messagesRead = 0
bw = sc.bytesWritten
sc.bytesWritten = 0
br = sc.bytesRead
sc.bytesRead = 0
return
}