in sandbox/CWMetricStreamExporter/lambda/main.go [254:264]
func encodeWriteRequestIntoProtoAndSnappy(writeRequest *prompb.WriteRequest) *bytes.Reader {
data, err := proto.Marshal(writeRequest)
if err != nil {
panic(err)
}
encoded := snappy.Encode(nil, data)
body := bytes.NewReader(encoded)
return body
}