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emitter.go
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/
emitter.go
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package main
import (
"io"
"time"
)
func Start(stop chan int) {
for _, in := range Plugins.Inputs {
go CopyMulty(in, Plugins.Outputs...)
}
for {
select {
case <-stop:
return
case <-time.After(1 * time.Second):
}
}
}
// Copy from 1 reader to multiple writers
func CopyMulty(src io.Reader, writers ...io.Writer) (err error) {
buf := make([]byte, 5*1024*1024)
wIndex := 0
modifier := NewHTTPModifier(&Settings.modifierConfig)
for {
nr, er := src.Read(buf)
if nr > 0 && len(buf) > nr {
payload := buf[0:nr]
if modifier != nil {
payload = modifier.Rewrite(payload)
// If modifier tells to skip request
if len(payload) == 0 {
continue
}
}
if Settings.debug {
Debug("[EMITTER] Sending payload, size:", len(payload), "First 500 bytes:", string(payload[0:500]))
}
if Settings.splitOutput {
// Simple round robin
writers[wIndex].Write(payload)
wIndex++
if wIndex >= len(writers) {
wIndex = 0
}
} else {
for _, dst := range writers {
dst.Write(payload)
}
}
}
if er == io.EOF {
break
}
if er != nil {
err = er
break
}
}
return err
}