| // Copyright Istio Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package health |
| |
| import ( |
| "fmt" |
| "net" |
| "net/http" |
| "net/http/httptest" |
| "strconv" |
| "strings" |
| "testing" |
| "time" |
| ) |
| |
| import ( |
| "go.uber.org/atomic" |
| "istio.io/api/networking/v1alpha3" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/test/util/reserveport" |
| "github.com/apache/dubbo-go-pixiu/pkg/test/util/retry" |
| ) |
| |
| func TestWorkloadHealthChecker_PerformApplicationHealthCheck(t *testing.T) { |
| t.Run("tcp", func(t *testing.T) { |
| port := reserveport.NewPortManagerOrFail(t).ReservePortNumberOrFail(t) |
| tcpHealthChecker := NewWorkloadHealthChecker(&v1alpha3.ReadinessProbe{ |
| InitialDelaySeconds: 0, |
| TimeoutSeconds: 1, |
| PeriodSeconds: 1, |
| SuccessThreshold: 1, |
| FailureThreshold: 1, |
| HealthCheckMethod: &v1alpha3.ReadinessProbe_TcpSocket{ |
| TcpSocket: &v1alpha3.TCPHealthCheckConfig{ |
| Host: "localhost", |
| Port: uint32(port), |
| }, |
| }, |
| }, nil, []string{"127.0.0.1"}, false) |
| // Speed up tests |
| tcpHealthChecker.config.CheckFrequency = time.Millisecond |
| |
| quitChan := make(chan struct{}) |
| |
| expectedTCPEvents := [7]*ProbeEvent{ |
| {Healthy: false}, |
| {Healthy: true}, |
| {Healthy: false}, |
| {Healthy: true}, |
| {Healthy: false}, |
| {Healthy: true}, |
| {Healthy: false}, |
| } |
| tcpHealthStatuses := [7]bool{false, true, false, true, false, true, false} |
| |
| cont := make(chan struct{}, 6) |
| // wait for go-ahead for state change |
| go func() { |
| for i := 0; i < len(tcpHealthStatuses); i++ { |
| if tcpHealthStatuses[i] { |
| var srv net.Listener |
| // open port until we get confirmation that |
| // retry in case of port conflicts |
| if err := retry.UntilSuccess(func() (err error) { |
| srv, err = net.Listen("tcp", fmt.Sprintf("localhost:%d", port)) |
| return |
| }, retry.Delay(time.Millisecond)); err != nil { |
| t.Log(err) |
| return |
| } |
| <-cont |
| srv.Close() |
| } else { |
| <-cont |
| } |
| } |
| }() |
| |
| eventNum := atomic.NewInt32(0) |
| go tcpHealthChecker.PerformApplicationHealthCheck(func(event *ProbeEvent) { |
| if eventNum.Load() >= 7 { |
| return |
| } |
| if event.Healthy != expectedTCPEvents[eventNum.Load()].Healthy { |
| t.Errorf("%s: got event healthy: %v at idx %v when expected healthy: %v", "tcp", event.Healthy, eventNum.Load(), expectedTCPEvents[eventNum.Load()].Healthy) |
| } |
| cont <- struct{}{} |
| eventNum.Inc() |
| }, quitChan) |
| retry.UntilSuccessOrFail(t, func() error { |
| if int(eventNum.Load()) != len(expectedTCPEvents) { |
| return fmt.Errorf("waiting for %v events", len(expectedTCPEvents)-int(eventNum.Load())) |
| } |
| return nil |
| }, retry.Delay(time.Millisecond*10), retry.Timeout(time.Second)) |
| close(quitChan) |
| }) |
| t.Run("http", func(t *testing.T) { |
| httpPath := "/test/health/check" |
| httpHealthStatuses := [4]bool{true, false, false, true} |
| httpServerEventCount := 0 |
| sss := httptest.NewServer(http.HandlerFunc(func(writer http.ResponseWriter, request *http.Request) { |
| if httpServerEventCount < len(httpHealthStatuses) && httpHealthStatuses[httpServerEventCount] { |
| writer.WriteHeader(200) |
| writer.Write([]byte("foobar")) |
| } else { |
| writer.WriteHeader(500) |
| } |
| httpServerEventCount++ |
| })) |
| host, ports, err := net.SplitHostPort(strings.TrimPrefix(sss.URL, "http://")) |
| if err != nil { |
| t.Fatal(err) |
| } |
| port, err := strconv.Atoi(ports) |
| if err != nil { |
| t.Fatal(err) |
| } |
| t.Cleanup(sss.Close) |
| httpHealthChecker := NewWorkloadHealthChecker(&v1alpha3.ReadinessProbe{ |
| InitialDelaySeconds: 0, |
| TimeoutSeconds: 1, |
| PeriodSeconds: 1, |
| SuccessThreshold: 1, |
| FailureThreshold: 1, |
| HealthCheckMethod: &v1alpha3.ReadinessProbe_HttpGet{ |
| HttpGet: &v1alpha3.HTTPHealthCheckConfig{ |
| Path: httpPath, |
| Port: uint32(port), |
| Scheme: "http", |
| Host: host, |
| }, |
| }, |
| }, nil, []string{"127.0.0.1"}, false) |
| // Speed up tests |
| httpHealthChecker.config.CheckFrequency = time.Millisecond |
| quitChan := make(chan struct{}) |
| t.Cleanup(func() { |
| close(quitChan) |
| }) |
| expectedHTTPEvents := [4]*ProbeEvent{ |
| {Healthy: true}, |
| {Healthy: false}, |
| {Healthy: true}, |
| {Healthy: false}, |
| } |
| |
| eventNum := atomic.NewInt32(0) |
| go httpHealthChecker.PerformApplicationHealthCheck(func(event *ProbeEvent) { |
| if event.Healthy != expectedHTTPEvents[eventNum.Load()].Healthy { |
| t.Errorf("tcp: got event healthy: %v at idx %v when expected healthy: %v", |
| event.Healthy, eventNum.Load(), expectedHTTPEvents[eventNum.Load()].Healthy) |
| } |
| eventNum.Inc() |
| }, quitChan) |
| |
| retry.UntilSuccessOrFail(t, func() error { |
| if int(eventNum.Load()) != len(expectedHTTPEvents) { |
| return fmt.Errorf("waiting for %v events", len(expectedHTTPEvents)-int(eventNum.Load())) |
| } |
| return nil |
| }, retry.Delay(time.Millisecond*10), retry.Timeout(time.Second)) |
| }) |
| } |