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Transitioning from multiple execs to reading logs

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Rob Scott 2021-11-01 13:38:22 -07:00
parent 76c19a24db
commit d4ebc6ff1e
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1 changed files with 44 additions and 25 deletions
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57
test/e2e/network/topology_hints.go
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@ -19,6 +19,7 @@ package network
import ( import (
"context" "context"
"fmt" "fmt"
"strings"
"time" "time"
"github.com/onsi/ginkgo" "github.com/onsi/ginkgo"
@ -151,37 +152,55 @@ var _ = common.SIGDescribe("Feature:Topology Hints", func() {
if !ok { if !ok {
framework.Failf("Expected zone to be specified for %s node", nodeName) framework.Failf("Expected zone to be specified for %s node", nodeName)
} }
execPod := e2epod.CreateExecPodOrFail(f.ClientSet, f.Namespace.Name, "execpod-", func(pod *v1.Pod) { ginkgo.By("creating a client pod for probing the service from " + fromZone)
pod.Spec.NodeName = nodeName podName := "curl-from-" + fromZone
}) clientPod := e2epod.NewAgnhostPod(f.Namespace.Name, podName, nil, nil, nil, "serve-hostname")
framework.Logf("Ensuring that requests from %s pod on %s node stay in %s zone", execPod.Name, nodeName, fromZone) nodeSelection := e2epod.NodeSelection{Name: nodeName}
e2epod.SetNodeSelection(&clientPod.Spec, nodeSelection)
cmd := fmt.Sprintf(`date; for i in $(seq 1 3000); do sleep 1; echo "Date: $(date) Try: ${i}"; curl -q -s --connect-timeout 2 http://%s:80/ ; echo; done`, svc.Name)
clientPod.Spec.Containers[0].Command = []string{"/bin/sh", "-c", cmd}
clientPod.Spec.Containers[0].Name = clientPod.Name
f.PodClient().CreateSync(clientPod)
cmd := fmt.Sprintf("curl -q -s --connect-timeout 2 http://%s:80/", svc.Name) framework.Logf("Ensuring that requests from %s pod on %s node stay in %s zone", clientPod.Name, nodeName, fromZone)
consecutiveRequests := 0
var stdout string var logs string
if pollErr := wait.PollImmediate(framework.Poll, e2eservice.KubeProxyLagTimeout, func() (bool, error) { if pollErr := wait.Poll(5*time.Second, e2eservice.KubeProxyLagTimeout, func() (bool, error) {
var err error var err error
stdout, err = framework.RunHostCmd(f.Namespace.Name, execPod.Name, cmd) logs, err = e2epod.GetPodLogs(c, f.Namespace.Name, clientPod.Name, clientPod.Name)
if err != nil { framework.ExpectNoError(err)
framework.Logf("unexpected error running %s from %s", cmd, execPod.Name) framework.Logf("Pod client logs: %s", logs)
logLines := strings.Split(logs, "\n")
if len(logLines) < 6 {
framework.Logf("only %d log lines, waiting for at least 6", len(logLines))
return false, nil return false, nil
} }
destZone, ok := podsByZone[stdout]
consecutiveSameZone := 0
for i := len(logLines) - 1; i > 0; i-- {
if logLines[i] == "" || strings.HasPrefix(logLines[i], "Date:") {
continue
}
destZone, ok := podsByZone[logLines[i]]
if !ok { if !ok {
framework.Logf("could not determine dest zone from output: %s", stdout) framework.Logf("could not determine dest zone from log line: %s", logLines[i])
return false, nil return false, nil
} }
if fromZone != destZone { if fromZone != destZone {
framework.Logf("expected request from %s to stay in %s zone, delivered to %s zone", execPod.Name, fromZone, destZone) framework.Logf("expected request from %s to stay in %s zone, delivered to %s zone", clientPod.Name, fromZone, destZone)
return false, nil
}
consecutiveRequests++
if consecutiveRequests < 5 {
return false, nil return false, nil
} }
consecutiveSameZone++
if consecutiveSameZone >= 5 {
return true, nil return true, nil
}
}
return false, nil
}); pollErr != nil { }); pollErr != nil {
framework.Failf("expected 5 consecutive requests from %s to stay in %s zone %v within %v, stdout: %v", execPod.Name, fromZone, e2eservice.KubeProxyLagTimeout, stdout) framework.Failf("expected 5 consecutive requests from %s to stay in zone %s within %v, stdout: %v", clientPod.Name, fromZone, e2eservice.KubeProxyLagTimeout, logs)
} }
} }
}) })