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Make the loadbalancers servers order random

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Co-authored-by: Mathieu Lonjaret <mathieu.lonjaret@gmail.com>
Co-authored-by: Romain <rtribotte@users.noreply.github.com>
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Qi 2022-09-14 20:42:08 +08:00 • committed by GitHub
parent 89dc466b23
commit 788f8fa951
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 177 additions and 46 deletions
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18
integration/retry_test.go
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@ -36,13 +36,11 @@ func (s *RetrySuite) TestRetry(c *check.C) {
err = try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("PathPrefix(`/`)"))
c.Assert(err, checker.IsNil)
start := time.Now()
// This simulates a DialTimeout when connecting to the backend server.
response, err := http.Get("http://127.0.0.1:8000/")
duration, allowed := time.Since(start), time.Millisecond*250
c.Assert(err, checker.IsNil)
// The test only verifies that the retry middleware makes sure that the working service is eventually reached.
c.Assert(response.StatusCode, checker.Equals, http.StatusOK)
c.Assert(int64(duration), checker.LessThan, int64(allowed))
}
func (s *RetrySuite) TestRetryBackoff(c *check.C) {
@ -58,16 +56,11 @@ func (s *RetrySuite) TestRetryBackoff(c *check.C) {
err = try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("PathPrefix(`/`)"))
c.Assert(err, checker.IsNil)
start := time.Now()
// This simulates a DialTimeout when connecting to the backend server.
response, err := http.Get("http://127.0.0.1:8000/")
duration := time.Since(start)
// test case delays: 500 + 700 + 1000ms with randomization. It should be safely > 1500ms
minAllowed := time.Millisecond * 1400
c.Assert(err, checker.IsNil)
// The test only verifies that the retry middleware allows finally to reach the working service.
c.Assert(response.StatusCode, checker.Equals, http.StatusOK)
c.Assert(int64(duration), checker.GreaterThan, int64(minAllowed))
}
func (s *RetrySuite) TestRetryWebsocket(c *check.C) {
@ -83,11 +76,12 @@ func (s *RetrySuite) TestRetryWebsocket(c *check.C) {
err = try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("PathPrefix(`/`)"))
c.Assert(err, checker.IsNil)
// This simulates a DialTimeout when connecting to the backend server.
// The test only verifies that the retry middleware makes sure that the working service is eventually reached.
_, response, err := websocket.DefaultDialer.Dial("ws://127.0.0.1:8000/echo", nil)
c.Assert(err, checker.IsNil)
c.Assert(response.StatusCode, checker.Equals, http.StatusSwitchingProtocols)
// The test verifies a second time that the working service is eventually reached.
_, response, err = websocket.DefaultDialer.Dial("ws://127.0.0.1:8000/echo", nil)
c.Assert(err, checker.IsNil)
c.Assert(response.StatusCode, checker.Equals, http.StatusSwitchingProtocols)