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package helper
import (
"net/http"
)
type CountingResponseWriter interface {
http.ResponseWriter
Count() int64
Status() int
}
type countingResponseWriter struct {
rw http.ResponseWriter
status int
count int64
}
func NewCountingResponseWriter(rw http.ResponseWriter) CountingResponseWriter {
return &countingResponseWriter{rw: rw}
}
func (c *countingResponseWriter) Header() http.Header {
return c.rw.Header()
}
func (c *countingResponseWriter) Write(data []byte) (int, error) {
if c.status == 0 {
c.WriteHeader(http.StatusOK)
}
n, err := c.rw.Write(data)
c.count += int64(n)
return n, err
}
func (c *countingResponseWriter) WriteHeader(status int) {
if c.status != 0 {
return
}
c.status = status
c.rw.WriteHeader(status)
}
// Count returns the number of bytes written to the ResponseWriter. This
// function is not thread-safe.
func (c *countingResponseWriter) Count() int64 {
return c.count
}
// Status returns the first HTTP status value that was written to the
// ResponseWriter. This function is not thread-safe.
func (c *countingResponseWriter) Status() int {
return c.status
}
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