601 lines
19 KiB
Go
601 lines
19 KiB
Go
package integration
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import (
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"bytes"
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"fmt"
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"io"
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"net/http"
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"os"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/stretchr/testify/suite"
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"github.com/traefik/traefik/v2/integration/try"
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)
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// HealthCheck test suites.
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type HealthCheckSuite struct {
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BaseSuite
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whoami1IP string
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whoami2IP string
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whoami3IP string
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whoami4IP string
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}
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func TestHealthCheckSuite(t *testing.T) {
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suite.Run(t, new(HealthCheckSuite))
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}
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func (s *HealthCheckSuite) SetupSuite() {
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s.BaseSuite.SetupSuite()
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s.createComposeProject("healthcheck")
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s.composeUp()
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s.whoami1IP = s.getComposeServiceIP("whoami1")
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s.whoami2IP = s.getComposeServiceIP("whoami2")
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s.whoami3IP = s.getComposeServiceIP("whoami3")
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s.whoami4IP = s.getComposeServiceIP("whoami4")
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}
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func (s *HealthCheckSuite) TearDownSuite() {
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s.BaseSuite.TearDownSuite()
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}
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func (s *HealthCheckSuite) TestSimpleConfiguration() {
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file := s.adaptFile("fixtures/healthcheck/simple.toml", struct {
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Server1 string
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Server2 string
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}{s.whoami1IP, s.whoami2IP})
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s.traefikCmd(withConfigFile(file))
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// wait for traefik
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err := try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("Host(`test.localhost`)"))
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require.NoError(s.T(), err)
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frontendHealthReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000/health", nil)
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require.NoError(s.T(), err)
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frontendHealthReq.Host = "test.localhost"
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err = try.Request(frontendHealthReq, 500*time.Millisecond, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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// Fix all whoami health to 500
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client := &http.Client{}
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whoamiHosts := []string{s.whoami1IP, s.whoami2IP}
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for _, whoami := range whoamiHosts {
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statusInternalServerErrorReq, err := http.NewRequest(http.MethodPost, "http://"+whoami+"/health", bytes.NewBufferString("500"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerErrorReq)
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require.NoError(s.T(), err)
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}
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// Verify no backend service is available due to failing health checks
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err = try.Request(frontendHealthReq, 3*time.Second, try.StatusCodeIs(http.StatusServiceUnavailable))
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require.NoError(s.T(), err)
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// Change one whoami health to 200
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statusOKReq1, err := http.NewRequest(http.MethodPost, "http://"+s.whoami1IP+"/health", bytes.NewBufferString("200"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusOKReq1)
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require.NoError(s.T(), err)
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// Verify frontend health : after
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err = try.Request(frontendHealthReq, 3*time.Second, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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frontendReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000/", nil)
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require.NoError(s.T(), err)
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frontendReq.Host = "test.localhost"
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// Check if whoami1 responds
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err = try.Request(frontendReq, 500*time.Millisecond, try.BodyContains(s.whoami1IP))
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require.NoError(s.T(), err)
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// Check if the service with bad health check (whoami2) never respond.
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err = try.Request(frontendReq, 2*time.Second, try.BodyContains(s.whoami2IP))
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assert.Error(s.T(), err)
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// TODO validate : run on 80
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resp, err := http.Get("http://127.0.0.1:8000/")
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// Expected a 404 as we did not configure anything
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require.NoError(s.T(), err)
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assert.Equal(s.T(), http.StatusNotFound, resp.StatusCode)
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}
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func (s *HealthCheckSuite) TestMultipleEntrypoints() {
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file := s.adaptFile("fixtures/healthcheck/multiple-entrypoints.toml", struct {
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Server1 string
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Server2 string
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}{s.whoami1IP, s.whoami2IP})
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s.traefikCmd(withConfigFile(file))
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// Wait for traefik
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err := try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("Host(`test.localhost`)"))
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require.NoError(s.T(), err)
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// Check entrypoint http1
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frontendHealthReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000/health", nil)
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require.NoError(s.T(), err)
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frontendHealthReq.Host = "test.localhost"
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err = try.Request(frontendHealthReq, 5*time.Second, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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// Check entrypoint http2
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frontendHealthReq, err = http.NewRequest(http.MethodGet, "http://127.0.0.1:9000/health", nil)
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require.NoError(s.T(), err)
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frontendHealthReq.Host = "test.localhost"
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err = try.Request(frontendHealthReq, 5*time.Second, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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// Set the both whoami health to 500
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client := &http.Client{}
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whoamiHosts := []string{s.whoami1IP, s.whoami2IP}
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for _, whoami := range whoamiHosts {
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statusInternalServerErrorReq, err := http.NewRequest(http.MethodPost, "http://"+whoami+"/health", bytes.NewBufferString("500"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerErrorReq)
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require.NoError(s.T(), err)
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}
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// Verify no backend service is available due to failing health checks
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err = try.Request(frontendHealthReq, 5*time.Second, try.StatusCodeIs(http.StatusServiceUnavailable))
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require.NoError(s.T(), err)
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// reactivate the whoami2
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statusInternalServerOkReq, err := http.NewRequest(http.MethodPost, "http://"+s.whoami2IP+"/health", bytes.NewBufferString("200"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerOkReq)
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require.NoError(s.T(), err)
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frontend1Req, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000/", nil)
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require.NoError(s.T(), err)
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frontend1Req.Host = "test.localhost"
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frontend2Req, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:9000/", nil)
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require.NoError(s.T(), err)
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frontend2Req.Host = "test.localhost"
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// Check if whoami1 never responds
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err = try.Request(frontend2Req, 2*time.Second, try.BodyContains(s.whoami1IP))
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assert.Error(s.T(), err)
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// Check if whoami1 never responds
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err = try.Request(frontend1Req, 2*time.Second, try.BodyContains(s.whoami1IP))
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assert.Error(s.T(), err)
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}
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func (s *HealthCheckSuite) TestPortOverload() {
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// Set one whoami health to 200
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client := &http.Client{}
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statusInternalServerErrorReq, err := http.NewRequest(http.MethodPost, "http://"+s.whoami1IP+"/health", bytes.NewBufferString("200"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerErrorReq)
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require.NoError(s.T(), err)
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file := s.adaptFile("fixtures/healthcheck/port_overload.toml", struct {
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Server1 string
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}{s.whoami1IP})
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s.traefikCmd(withConfigFile(file))
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// wait for traefik
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err = try.GetRequest("http://127.0.0.1:8080/api/rawdata", 10*time.Second, try.BodyContains("Host(`test.localhost`)"))
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require.NoError(s.T(), err)
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frontendHealthReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000/health", nil)
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require.NoError(s.T(), err)
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frontendHealthReq.Host = "test.localhost"
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// We test bad gateway because we use an invalid port for the backend
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err = try.Request(frontendHealthReq, 500*time.Millisecond, try.StatusCodeIs(http.StatusBadGateway))
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require.NoError(s.T(), err)
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// Set one whoami health to 500
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statusInternalServerErrorReq, err = http.NewRequest(http.MethodPost, "http://"+s.whoami1IP+"/health", bytes.NewBufferString("500"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerErrorReq)
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require.NoError(s.T(), err)
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// Verify no backend service is available due to failing health checks
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err = try.Request(frontendHealthReq, 3*time.Second, try.StatusCodeIs(http.StatusServiceUnavailable))
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require.NoError(s.T(), err)
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}
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// Checks if all the loadbalancers created will correctly update the server status.
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func (s *HealthCheckSuite) TestMultipleRoutersOnSameService() {
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file := s.adaptFile("fixtures/healthcheck/multiple-routers-one-same-service.toml", struct {
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Server1 string
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}{s.whoami1IP})
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s.traefikCmd(withConfigFile(file))
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// wait for traefik
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err := try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("Host(`test.localhost`)"))
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require.NoError(s.T(), err)
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// Set whoami health to 200 to be sure to start with the wanted status
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client := &http.Client{}
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statusOkReq, err := http.NewRequest(http.MethodPost, "http://"+s.whoami1IP+"/health", bytes.NewBufferString("200"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusOkReq)
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require.NoError(s.T(), err)
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// check healthcheck on web1 entrypoint
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healthReqWeb1, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000/health", nil)
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require.NoError(s.T(), err)
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healthReqWeb1.Host = "test.localhost"
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err = try.Request(healthReqWeb1, 1*time.Second, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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// check healthcheck on web2 entrypoint
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healthReqWeb2, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:9000/health", nil)
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require.NoError(s.T(), err)
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healthReqWeb2.Host = "test.localhost"
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err = try.Request(healthReqWeb2, 500*time.Millisecond, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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// Set whoami health to 500
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statusInternalServerErrorReq, err := http.NewRequest(http.MethodPost, "http://"+s.whoami1IP+"/health", bytes.NewBufferString("500"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerErrorReq)
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require.NoError(s.T(), err)
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// Verify no backend service is available due to failing health checks
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err = try.Request(healthReqWeb1, 3*time.Second, try.StatusCodeIs(http.StatusServiceUnavailable))
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require.NoError(s.T(), err)
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err = try.Request(healthReqWeb2, 3*time.Second, try.StatusCodeIs(http.StatusServiceUnavailable))
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require.NoError(s.T(), err)
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// Change one whoami health to 200
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statusOKReq1, err := http.NewRequest(http.MethodPost, "http://"+s.whoami1IP+"/health", bytes.NewBufferString("200"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusOKReq1)
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require.NoError(s.T(), err)
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// Verify health check
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err = try.Request(healthReqWeb1, 3*time.Second, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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err = try.Request(healthReqWeb2, 3*time.Second, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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}
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func (s *HealthCheckSuite) TestPropagate() {
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file := s.adaptFile("fixtures/healthcheck/propagate.toml", struct {
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Server1 string
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Server2 string
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Server3 string
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Server4 string
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}{s.whoami1IP, s.whoami2IP, s.whoami3IP, s.whoami4IP})
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s.traefikCmd(withConfigFile(file))
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// wait for traefik
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err := try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("Host(`root.localhost`)"))
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require.NoError(s.T(), err)
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rootReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000", nil)
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require.NoError(s.T(), err)
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rootReq.Host = "root.localhost"
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err = try.Request(rootReq, 500*time.Millisecond, try.StatusCodeIs(http.StatusOK))
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require.NoError(s.T(), err)
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// Bring whoami1 and whoami3 down
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client := http.Client{
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Timeout: 10 * time.Second,
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}
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whoamiHosts := []string{s.whoami1IP, s.whoami3IP}
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for _, whoami := range whoamiHosts {
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statusInternalServerErrorReq, err := http.NewRequest(http.MethodPost, "http://"+whoami+"/health", bytes.NewBufferString("500"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerErrorReq)
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require.NoError(s.T(), err)
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}
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try.Sleep(time.Second)
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want2 := `IP: ` + s.whoami2IP
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want4 := `IP: ` + s.whoami4IP
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// Verify load-balancing on root still works, and that we're getting an alternation between wsp2, and wsp4.
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reachedServers := make(map[string]int)
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for range 4 {
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resp, err := client.Do(rootReq)
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require.NoError(s.T(), err)
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body, err := io.ReadAll(resp.Body)
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require.NoError(s.T(), err)
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if reachedServers[s.whoami4IP] > reachedServers[s.whoami2IP] {
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assert.Contains(s.T(), string(body), want2)
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reachedServers[s.whoami2IP]++
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continue
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}
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if reachedServers[s.whoami2IP] > reachedServers[s.whoami4IP] {
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assert.Contains(s.T(), string(body), want4)
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reachedServers[s.whoami4IP]++
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continue
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}
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// First iteration, so we can't tell whether it's going to be wsp2, or wsp4.
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if strings.Contains(string(body), `IP: `+s.whoami4IP) {
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reachedServers[s.whoami4IP]++
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continue
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}
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if strings.Contains(string(body), `IP: `+s.whoami2IP) {
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reachedServers[s.whoami2IP]++
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continue
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}
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}
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assert.Equal(s.T(), 2, reachedServers[s.whoami2IP])
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assert.Equal(s.T(), 2, reachedServers[s.whoami4IP])
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fooReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000", nil)
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require.NoError(s.T(), err)
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fooReq.Host = "foo.localhost"
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// Verify load-balancing on foo still works, and that we're getting wsp2, wsp2, wsp2, wsp2, etc.
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want := `IP: ` + s.whoami2IP
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for range 4 {
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resp, err := client.Do(fooReq)
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require.NoError(s.T(), err)
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body, err := io.ReadAll(resp.Body)
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require.NoError(s.T(), err)
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assert.Contains(s.T(), string(body), want)
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}
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barReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000", nil)
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require.NoError(s.T(), err)
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barReq.Host = "bar.localhost"
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// Verify load-balancing on bar still works, and that we're getting wsp2, wsp2, wsp2, wsp2, etc.
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want = `IP: ` + s.whoami2IP
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for range 4 {
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resp, err := client.Do(barReq)
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require.NoError(s.T(), err)
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body, err := io.ReadAll(resp.Body)
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require.NoError(s.T(), err)
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assert.Contains(s.T(), string(body), want)
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}
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// Bring whoami2 and whoami4 down
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whoamiHosts = []string{s.whoami2IP, s.whoami4IP}
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for _, whoami := range whoamiHosts {
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statusInternalServerErrorReq, err := http.NewRequest(http.MethodPost, "http://"+whoami+"/health", bytes.NewBufferString("500"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusInternalServerErrorReq)
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require.NoError(s.T(), err)
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}
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try.Sleep(time.Second)
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// Verify that everything is down, and that we get 503s everywhere.
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for range 2 {
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resp, err := client.Do(rootReq)
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require.NoError(s.T(), err)
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assert.Equal(s.T(), http.StatusServiceUnavailable, resp.StatusCode)
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resp, err = client.Do(fooReq)
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require.NoError(s.T(), err)
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assert.Equal(s.T(), http.StatusServiceUnavailable, resp.StatusCode)
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resp, err = client.Do(barReq)
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require.NoError(s.T(), err)
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assert.Equal(s.T(), http.StatusServiceUnavailable, resp.StatusCode)
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}
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// Bring everything back up.
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whoamiHosts = []string{s.whoami1IP, s.whoami2IP, s.whoami3IP, s.whoami4IP}
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for _, whoami := range whoamiHosts {
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statusOKReq, err := http.NewRequest(http.MethodPost, "http://"+whoami+"/health", bytes.NewBufferString("200"))
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require.NoError(s.T(), err)
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_, err = client.Do(statusOKReq)
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require.NoError(s.T(), err)
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}
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try.Sleep(time.Second)
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// Verify everything is up on root router.
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reachedServers = make(map[string]int)
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for range 4 {
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resp, err := client.Do(rootReq)
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require.NoError(s.T(), err)
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body, err := io.ReadAll(resp.Body)
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require.NoError(s.T(), err)
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if strings.Contains(string(body), `IP: `+s.whoami1IP) {
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reachedServers[s.whoami1IP]++
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continue
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}
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if strings.Contains(string(body), `IP: `+s.whoami2IP) {
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reachedServers[s.whoami2IP]++
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continue
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}
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if strings.Contains(string(body), `IP: `+s.whoami3IP) {
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reachedServers[s.whoami3IP]++
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continue
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}
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if strings.Contains(string(body), `IP: `+s.whoami4IP) {
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reachedServers[s.whoami4IP]++
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continue
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}
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}
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|
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami1IP])
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami2IP])
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami3IP])
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami4IP])
|
|
|
|
// Verify everything is up on foo router.
|
|
reachedServers = make(map[string]int)
|
|
for range 4 {
|
|
resp, err := client.Do(fooReq)
|
|
require.NoError(s.T(), err)
|
|
|
|
body, err := io.ReadAll(resp.Body)
|
|
require.NoError(s.T(), err)
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami1IP) {
|
|
reachedServers[s.whoami1IP]++
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami2IP) {
|
|
reachedServers[s.whoami2IP]++
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami3IP) {
|
|
reachedServers[s.whoami3IP]++
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami4IP) {
|
|
reachedServers[s.whoami4IP]++
|
|
continue
|
|
}
|
|
}
|
|
|
|
assert.Equal(s.T(), 2, reachedServers[s.whoami1IP])
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami2IP])
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami3IP])
|
|
assert.Equal(s.T(), 0, reachedServers[s.whoami4IP])
|
|
|
|
// Verify everything is up on bar router.
|
|
reachedServers = make(map[string]int)
|
|
for range 4 {
|
|
resp, err := client.Do(barReq)
|
|
require.NoError(s.T(), err)
|
|
|
|
body, err := io.ReadAll(resp.Body)
|
|
require.NoError(s.T(), err)
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami1IP) {
|
|
reachedServers[s.whoami1IP]++
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami2IP) {
|
|
reachedServers[s.whoami2IP]++
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami3IP) {
|
|
reachedServers[s.whoami3IP]++
|
|
continue
|
|
}
|
|
|
|
if strings.Contains(string(body), `IP: `+s.whoami4IP) {
|
|
reachedServers[s.whoami4IP]++
|
|
continue
|
|
}
|
|
}
|
|
|
|
assert.Equal(s.T(), 2, reachedServers[s.whoami1IP])
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami2IP])
|
|
assert.Equal(s.T(), 1, reachedServers[s.whoami3IP])
|
|
assert.Equal(s.T(), 0, reachedServers[s.whoami4IP])
|
|
}
|
|
|
|
func (s *HealthCheckSuite) TestPropagateNoHealthCheck() {
|
|
file := s.adaptFile("fixtures/healthcheck/propagate_no_healthcheck.toml", struct {
|
|
Server1 string
|
|
}{s.whoami1IP})
|
|
|
|
s.traefikCmd(withConfigFile(file))
|
|
|
|
// wait for traefik
|
|
err := try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("Host(`noop.localhost`)"), try.BodyNotContains("Host(`root.localhost`)"))
|
|
require.NoError(s.T(), err)
|
|
|
|
rootReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000", nil)
|
|
require.NoError(s.T(), err)
|
|
rootReq.Host = "root.localhost"
|
|
|
|
err = try.Request(rootReq, 500*time.Millisecond, try.StatusCodeIs(http.StatusNotFound))
|
|
require.NoError(s.T(), err)
|
|
}
|
|
|
|
func (s *HealthCheckSuite) TestPropagateReload() {
|
|
// Setup a WSP service without the healthcheck enabled (wsp-service1)
|
|
withoutHealthCheck := s.adaptFile("fixtures/healthcheck/reload_without_healthcheck.toml", struct {
|
|
Server1 string
|
|
Server2 string
|
|
}{s.whoami1IP, s.whoami2IP})
|
|
withHealthCheck := s.adaptFile("fixtures/healthcheck/reload_with_healthcheck.toml", struct {
|
|
Server1 string
|
|
Server2 string
|
|
}{s.whoami1IP, s.whoami2IP})
|
|
|
|
s.traefikCmd(withConfigFile(withoutHealthCheck))
|
|
|
|
// wait for traefik
|
|
err := try.GetRequest("http://127.0.0.1:8080/api/rawdata", 60*time.Second, try.BodyContains("Host(`root.localhost`)"))
|
|
require.NoError(s.T(), err)
|
|
|
|
// Allow one of the underlying services on it to fail all servers HC (whoami2)
|
|
client := http.Client{
|
|
Timeout: 10 * time.Second,
|
|
}
|
|
statusOKReq, err := http.NewRequest(http.MethodPost, "http://"+s.whoami2IP+"/health", bytes.NewBufferString("500"))
|
|
require.NoError(s.T(), err)
|
|
_, err = client.Do(statusOKReq)
|
|
require.NoError(s.T(), err)
|
|
|
|
rootReq, err := http.NewRequest(http.MethodGet, "http://127.0.0.1:8000", nil)
|
|
require.NoError(s.T(), err)
|
|
rootReq.Host = "root.localhost"
|
|
|
|
// Check the failed service (whoami2) is getting requests, but answer 500
|
|
err = try.Request(rootReq, 500*time.Millisecond, try.StatusCodeIs(http.StatusServiceUnavailable))
|
|
require.NoError(s.T(), err)
|
|
|
|
// Enable the healthcheck on the root WSP (wsp-service1) and let Traefik reload the config
|
|
fr1, err := os.OpenFile(withoutHealthCheck, os.O_APPEND|os.O_WRONLY, 0o644)
|
|
assert.NotNil(s.T(), fr1)
|
|
require.NoError(s.T(), err)
|
|
err = fr1.Truncate(0)
|
|
require.NoError(s.T(), err)
|
|
|
|
fr2, err := os.ReadFile(withHealthCheck)
|
|
require.NoError(s.T(), err)
|
|
_, err = fmt.Fprint(fr1, string(fr2))
|
|
require.NoError(s.T(), err)
|
|
err = fr1.Close()
|
|
require.NoError(s.T(), err)
|
|
|
|
// Waiting for the reflected change.
|
|
err = try.Request(rootReq, 5*time.Second, try.StatusCodeIs(http.StatusOK))
|
|
require.NoError(s.T(), err)
|
|
|
|
// Check the failed service (whoami2) is not getting requests
|
|
wantIPs := []string{s.whoami1IP, s.whoami1IP, s.whoami1IP, s.whoami1IP}
|
|
for _, ip := range wantIPs {
|
|
err = try.Request(rootReq, 5*time.Second, try.StatusCodeIs(http.StatusOK), try.BodyContains("IP: "+ip))
|
|
require.NoError(s.T(), err)
|
|
}
|
|
}
|