// WithAccessLog is a middleware that logs all access requests performed on the
// sub handler using github.com/corestoreio/csfw/net/ctxlog and
// github.com/rs/xstats stored in context.
func WithAccessLog() Middleware {
return func(h Handler) Handler {
return HandlerFunc(func(ctx context.Context, w http.ResponseWriter, r *http.Request) error {
// Time request
reqStart := time.Now()
// Sniff the status and content size for logging
lw := mutil.WrapWriter(w)
err := h.ServeHTTPContext(ctx, lw, r)
// Compute request duration
reqDur := time.Since(reqStart)
// Get request status
status := ResponseStatus(ctx, lw.Status())
// Log request stats
sts := xstats.FromContext(ctx)
tags := []string{
"status:" + status,
"status_code:" + strconv.Itoa(lw.Status()),
}
sts.Timing("request_time", reqDur, tags...)
sts.Histogram("request_size", float64(lw.BytesWritten()), tags...)
ctxlog.FromContext(ctx).Info("request",
"error", utils.Errors(err),
"method", r.Method,
"uri", r.URL.String(),
"type", "access",
"status", status,
"status_code", lw.Status(),
"duration", reqDur.Seconds(),
"size", lw.BytesWritten(),
"remote_addr", httputils.GetRemoteAddr(r).String(),
"user_agent", r.Header.Get("User-Agent"),
"referer", r.Header.Get("Referer"),
)
return err
})
}
}
// newContextCountryByIP searches the country for an IP address and puts the country
// into a new context.
func (s *Service) newContextCountryByIP(ctx context.Context, r *http.Request) (context.Context, *IPCountry, error) {
remoteAddr := httputils.GetRemoteAddr(r)
if remoteAddr == nil {
if PkgLog.IsDebug() {
PkgLog.Debug("geoip.WithCountryByIP.GetRemoteAddr", "err", ErrCannotGetRemoteAddr, "req", r)
}
return ctx, nil, ErrCannotGetRemoteAddr
}
c, err := s.GetCountryByIP(remoteAddr)
if err != nil {
if PkgLog.IsDebug() {
PkgLog.Debug("geoip.WithCountryByIP.GetCountryByIP", "err", err, "remoteAddr", remoteAddr, "req", r)
}
return ctx, nil, errgo.Mask(err)
}
c.IP = remoteAddr
return NewContextCountry(ctx, c), c, nil
}
func TestGetRemoteAddr(t *testing.T) {
tests := []struct {
r *http.Request
wantIP net.IP
}{
{func() *http.Request {
r, err := http.NewRequest("GET", "http://gopher.go", nil)
assert.NoError(t, err)
r.Header.Set("X-Real-IP", "123.123.123.123")
return r
}(), net.ParseIP("123.123.123.123")},
{func() *http.Request {
r, err := http.NewRequest("GET", "http://gopher.go", nil)
assert.NoError(t, err)
r.Header.Set("X-Forwarded-For", "200.100.50.3")
return r
}(), net.ParseIP("200.100.50.3")},
{func() *http.Request {
r, err := http.NewRequest("GET", "http://gopher.go", nil)
assert.NoError(t, err)
r.RemoteAddr = "100.200.50.3"
return r
}(), net.ParseIP("100.200.50.3")},
{func() *http.Request {
r, err := http.NewRequest("GET", "http://gopher.go", nil)
assert.NoError(t, err)
r.RemoteAddr = "100.200.a.3"
return r
}(), nil},
}
for i, test := range tests {
haveIP := httputils.GetRemoteAddr(test.r)
assert.Exactly(t, test.wantIP, haveIP, "Index: %d", i)
}
}