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Move watch creating into the retry loop

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This commit is contained in:
Caleb Woodbine 2020-06-08 09:29:28 +12:00
parent 63c694acdf
commit 39fd803140
1 changed files with 7 additions and 5 deletions
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12
test/e2e/framework/util.go
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@ -1298,20 +1298,22 @@ func taintExists(taints []v1.Taint, taintToFind *v1.Taint) bool {
// scenario the test itself
// retryCleanup a function to run which ensures that there are no dangling resources upon test failure
func WatchEventSequenceVerifier(ctx context.Context, dc dynamic.Interface, resourceType schema.GroupVersionResource, namespace string, resourceName string, listOptions metav1.ListOptions, expectedWatchEvents []watch.Event, scenario func(*watchtools.RetryWatcher) []watch.Event, retryCleanup func() error) {
initResource, err := dc.Resource(resourceType).Namespace(namespace).List(ctx, listOptions)
ExpectNoError(err, "Failed to fetch initial resource")
listWatcher := &cache.ListWatch{
WatchFunc: func(listOptions metav1.ListOptions) (watch.Interface, error) {
return dc.Resource(resourceType).Namespace(namespace).Watch(ctx, listOptions)
},
}
resourceWatch, err := watchtools.NewRetryWatcher(initResource.GetResourceVersion(), listWatcher)
ExpectNoError(err, "Failed to create a resource watch of %v in namespace %v", resourceType.Resource, namespace)
// NOTE value of 3 retries seems to make sense
retries := 3
retriesLoop:
for try := 1; try <= retries; try++ {
initResource, err := dc.Resource(resourceType).Namespace(namespace).List(ctx, listOptions)
ExpectNoError(err, "Failed to fetch initial resource")
resourceWatch, err := watchtools.NewRetryWatcher(initResource.GetResourceVersion(), listWatcher)
ExpectNoError(err, "Failed to create a resource watch of %v in namespace %v", resourceType.Resource, namespace)
// NOTE the test may need access to the events to see what's going on, such as a change in status
actualWatchEvents := scenario(resourceWatch)
errs := sets.NewString()
@ -1334,7 +1336,7 @@ retriesLoop:
}
totalValidWatchEvents++
}
err := retryCleanup()
err = retryCleanup()
ExpectNoError(err, "Error occurred when cleaning up resources")
if errs.Len() > 0 && try < retries {
fmt.Println("invariants violated:\n", strings.Join(errs.List(), "\n - "))