VictoriaMetrics/lib/prompbmarshal/util.go

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package prompbmarshal
import (
"fmt"
)
// MarshalWriteRequest marshals wr to dst and returns the result.
func MarshalWriteRequest(dst []byte, wr *WriteRequest) []byte {
size := wr.Size()
dstLen := len(dst)
if n := size - (cap(dst) - dstLen); n > 0 {
dst = append(dst[:cap(dst)], make([]byte, n)...)
}
dst = dst[:dstLen+size]
n, err := wr.MarshalToSizedBuffer(dst[dstLen:])
if err != nil {
panic(fmt.Errorf("BUG: unexpected error when marshaling WriteRequest: %s", err))
}
return dst[:dstLen+n]
}
// ResetWriteRequest resets wr.
func ResetWriteRequest(wr *WriteRequest) {
for i := range wr.Timeseries {
ts := wr.Timeseries[i]
ts.Labels = nil
ts.Samples = nil
}
wr.Timeseries = wr.Timeseries[:0]
}