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)
}
// 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()
}
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)
}
}
// 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()
}