Example #1
0
func TestRetryTimeout(t *testing.T) {
	d := time.Millisecond
	rt := &fixedRoundTripper{failUntil: time.Now().Add(d)}
	c := http.Client{}
	c.Transport = retry.Retry(retry.MaxAttempts(0), retry.Timeout(2*d), retry.Next(rt))

	resp, err := c.Get("http://bar")
	if err != nil {
		t.Fatal(err)
	}

	if want, have := http.StatusTeapot, resp.StatusCode; want != have {
		t.Fatalf("want %v, have %v", want, have)
	}

	t.Logf("just FYI, it took %d attempt(s) to succeed", rt.count)
}
Example #2
0
// ExampleDefaultUsage shows how to wire up a default DNS SRV proxy into
// http.DefaultClient.
func ExampleDefaultUsage() {
	var rt http.RoundTripper
	rt = http.DefaultTransport
	rt = proxy.Proxy(proxy.Next(rt))
	rt = retry.Retry(retry.Next(rt))

	t := &http.Transport{}
	t.RegisterProtocol("dnssrv", rt)
	http.DefaultClient.Transport = t

	resp, err := http.Get("dnssrv://foo.bar.srv.internal.name/normal/path?key=value")
	if err != nil {
		log.Fatal(err)
	}

	io.Copy(os.Stdout, resp.Body)
	resp.Body.Close()
}
Example #3
0
func TestRetryMaxAttempts(t *testing.T) {
	rt := &fixedRoundTripper{failFor: 2}
	c := http.Client{}
	c.Transport = retry.Retry(retry.MaxAttempts(3), retry.Next(rt))

	resp, err := c.Get("http://foo")
	if err != nil {
		t.Fatal(err)
	}

	if want, have := http.StatusTeapot, resp.StatusCode; want != have {
		t.Fatalf("want %v, have %v", want, have)
	}

	if want, have := 3, rt.count; want != have {
		t.Errorf("want %v, have %v", want, have)
	}
}
Example #4
0
// ExampleCustomUsage shows how to wire up a customized DNS SRV proxy into
// http.DefaultClient.
func ExampleCustomUsage() {
	var rt http.RoundTripper
	rt = http.DefaultTransport

	rt = proxy.Proxy(
		proxy.Next(rt),
		proxy.Scheme("https"),
		proxy.PoolReporter(os.Stderr),
		proxy.Factory(pool.RoundRobin),
	)

	rt = retry.Retry(
		retry.Next(rt),
		retry.Pass(func(resp *http.Response, err error) error {
			if err != nil {
				return err
			}
			if resp.StatusCode >= 500 {
				return fmt.Errorf("HTTP %d %s", resp.StatusCode, resp.Status)
			}
			return nil
		}),
		retry.MaxAttempts(10),
		retry.Timeout(750*time.Millisecond),
	)

	t := &http.Transport{}
	t.RegisterProtocol("dnssrv", rt)
	http.DefaultClient.Transport = t

	resp, err := http.Get("dnssrv://foo.bar.srv.internal.name/normal/path?key=value")
	if err != nil {
		log.Fatal(err)
	}

	io.Copy(os.Stdout, resp.Body)
	resp.Body.Close()
}