Golang String.Delete方法代码示例

// Returns pods missing from summary.
func podsMissingFromSummary(s stats.Summary, expectedPods sets.String) sets.String {
	expectedPods = sets.StringKeySet(expectedPods)
	for _, pod := range s.Pods {
		if expectedPods.Has(pod.PodRef.Name) {
			expectedPods.Delete(pod.PodRef.Name)
		}
	}
	return expectedPods
}

// Munge is the workhorse the will actually make updates to the PR
// The algorithm goes as:
// - Initially, we set up approverSet
//   - Go through all comments after latest commit. If any approver said "/approve", add him to approverSet.
// - For each file, we see if any approver of this file is in approverSet.
//   - An approver of a file is defined as:
//     - It's known that each dir has a list of approvers. (This might not hold true. For usability, current situation is enough.)
//     - Approver of a dir is also the approver of child dirs.
//   - We look at top N (default 3) level dir approvers. For example, for file "/a/b/c/d/e", we might search for approver from
//     "/", "/a/", "/a/b/"
// - Iff all files has been approved, the bot will add "approved" label.
func (h *ApprovalHandler) Munge(obj *github.MungeObject) {
	if !obj.IsPR() {
		return
	}
	files, err := obj.ListFiles()
	if err != nil {
		glog.Errorf("failed to list files in this PR: %v", err)
		return
	}

	comments, err := getCommentsAfterLastModified(obj)
	if err != nil {
		glog.Errorf("failed to get comments in this PR: %v", err)
		return
	}

	approverSet := sets.String{}

	// from oldest to latest
	for i := len(comments) - 1; i >= 0; i-- {
		c := comments[i]

		if !mungerutil.IsValidUser(c.User) {
			continue
		}

		fields := strings.Fields(strings.TrimSpace(*c.Body))

		if len(fields) == 1 && strings.ToLower(fields[0]) == "/approve" {
			approverSet.Insert(*c.User.Login)
			continue
		}

		if len(fields) == 2 && strings.ToLower(fields[0]) == "/approve" && strings.ToLower(fields[1]) == "cancel" {
			approverSet.Delete(*c.User.Login)
		}
	}

	for _, file := range files {
		if !h.hasApproval(*file.Filename, approverSet, maxDepth) {
			return
		}
	}
	obj.AddLabel(approvedLabel)
}

func TestHammerController(t *testing.T) {
	// This test executes a bunch of requests through the fake source and
	// controller framework to make sure there's no locking/threading
	// errors. If an error happens, it should hang forever or trigger the
	// race detector.

	// source simulates an apiserver object endpoint.
	source := framework.NewFakeControllerSource()

	// Let's do threadsafe output to get predictable test results.
	outputSetLock := sync.Mutex{}
	// map of key to operations done on the key
	outputSet := map[string][]string{}

	recordFunc := func(eventType string, obj interface{}) {
		key, err := framework.DeletionHandlingMetaNamespaceKeyFunc(obj)
		if err != nil {
			t.Errorf("something wrong with key: %v", err)
			key = "oops something went wrong with the key"
		}

		// Record some output when items are deleted.
		outputSetLock.Lock()
		defer outputSetLock.Unlock()
		outputSet[key] = append(outputSet[key], eventType)
	}

	// Make a controller which just logs all the changes it gets.
	_, controller := framework.NewInformer(
		source,
		&api.Pod{},
		time.Millisecond*100,
		framework.ResourceEventHandlerFuncs{
			AddFunc:    func(obj interface{}) { recordFunc("add", obj) },
			UpdateFunc: func(oldObj, newObj interface{}) { recordFunc("update", newObj) },
			DeleteFunc: func(obj interface{}) { recordFunc("delete", obj) },
		},
	)

	if controller.HasSynced() {
		t.Errorf("Expected HasSynced() to return false before we started the controller")
	}

	// Run the controller and run it until we close stop.
	stop := make(chan struct{})
	go controller.Run(stop)

	// Let's wait for the controller to do its initial sync
	time.Sleep(100 * time.Millisecond)
	if !controller.HasSynced() {
		t.Errorf("Expected HasSynced() to return true after the initial sync")
	}

	wg := sync.WaitGroup{}
	const threads = 3
	wg.Add(threads)
	for i := 0; i < threads; i++ {
		go func() {
			defer wg.Done()
			// Let's add a few objects to the source.
			currentNames := sets.String{}
			rs := rand.NewSource(rand.Int63())
			f := fuzz.New().NilChance(.5).NumElements(0, 2).RandSource(rs)
			r := rand.New(rs) // Mustn't use r and f concurrently!
			for i := 0; i < 100; i++ {
				var name string
				var isNew bool
				if currentNames.Len() == 0 || r.Intn(3) == 1 {
					f.Fuzz(&name)
					isNew = true
				} else {
					l := currentNames.List()
					name = l[r.Intn(len(l))]
				}

				pod := &api.Pod{}
				f.Fuzz(pod)
				pod.ObjectMeta.Name = name
				pod.ObjectMeta.Namespace = "default"
				// Add, update, or delete randomly.
				// Note that these pods are not valid-- the fake source doesn't
				// call validation or perform any other checking.
				if isNew {
					currentNames.Insert(name)
					source.Add(pod)
					continue
				}
				switch r.Intn(2) {
				case 0:
					currentNames.Insert(name)
					source.Modify(pod)
				case 1:
					currentNames.Delete(name)
					source.Delete(pod)
				}
			}
		}()
	}
	wg.Wait()

//.........这里部分代码省略.........