Example #1
0
// We've hit the limit and were able to proceed on the next time run
func (s *LimiterSuite) TestOptions(c *C) {
	handler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})

	rates := NewRateSet()
	rates.Add(time.Second, 1, 1)

	errHandler := utils.ErrorHandlerFunc(func(w http.ResponseWriter, req *http.Request, err error) {
		w.WriteHeader(http.StatusTeapot)
		w.Write([]byte(http.StatusText(http.StatusTeapot)))
	})

	buf := &bytes.Buffer{}
	log := utils.NewFileLogger(buf, utils.INFO)

	l, err := New(handler, headerLimit, rates, ErrorHandler(errHandler), Logger(log), Clock(s.clock))
	c.Assert(err, IsNil)

	srv := httptest.NewServer(l)
	defer srv.Close()

	re, _, err := testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)

	re, _, err = testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusTeapot)

	c.Assert(len(buf.String()), Not(Equals), 0)
}
Example #2
0
// We've hit the limit and were able to proceed on the next time run
func (s *LimiterSuite) TestHitLimit(c *C) {
	handler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})

	rates := NewRateSet()
	rates.Add(time.Second, 1, 1)

	l, err := New(handler, headerLimit, rates, Clock(s.clock))
	c.Assert(err, IsNil)

	srv := httptest.NewServer(l)
	defer srv.Close()

	re, _, err := testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)

	// Next request from the same source hits rate limit
	re, _, err = testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, 429)

	// Second later, the request from this ip will succeed
	s.clock.Sleep(time.Second)
	re, _, err = testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)
}
Example #3
0
// If configMapper returns empty rates, then the default rate is applied.
func (s *LimiterSuite) TestExtractorEmpty(c *C) {
	// Given
	extractor := func(*http.Request) (*RateSet, error) {
		return NewRateSet(), nil
	}
	rates := NewRateSet()
	rates.Add(time.Second, 1, 1)

	handler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})

	l, err := New(handler, headerLimit, rates, Clock(s.clock), ExtractRates(RateExtractorFunc(extractor)))
	c.Assert(err, IsNil)

	srv := httptest.NewServer(l)
	defer srv.Close()

	// When/Then: The default rate is applied, which 1 req/second
	re, _, err := testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)

	re, _, err = testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, 429)

	s.clock.Sleep(time.Second)
	re, _, err = testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusOK)
}
Example #4
0
// We've failed to extract client ip
func (s *LimiterSuite) TestFailure(c *C) {
	handler := http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		w.Write([]byte("hello"))
	})

	rates := NewRateSet()
	rates.Add(time.Second, 1, 1)

	l, err := New(handler, faultyExtract, rates, Clock(s.clock))
	c.Assert(err, IsNil)

	srv := httptest.NewServer(l)
	defer srv.Close()

	re, _, err := testutils.Get(srv.URL, testutils.Header("Source", "a"))
	c.Assert(err, IsNil)
	c.Assert(re.StatusCode, Equals, http.StatusInternalServerError)
}