Golang util.NewDeploymentCondition函数代码示例

// checkPausedConditions checks if the given deployment is paused or not and adds an appropriate condition.
// These conditions are needed so that we won't accidentally report lack of progress for resumed deployments
// that were paused for longer than progressDeadlineSeconds.
func (dc *DeploymentController) checkPausedConditions(d *extensions.Deployment) error {
	if d.Spec.ProgressDeadlineSeconds == nil {
		return nil
	}
	cond := deploymentutil.GetDeploymentCondition(d.Status, extensions.DeploymentProgressing)
	if cond != nil && cond.Reason == deploymentutil.TimedOutReason {
		// If we have reported lack of progress, do not overwrite it with a paused condition.
		return nil
	}
	pausedCondExists := cond != nil && cond.Reason == deploymentutil.PausedDeployReason

	needsUpdate := false
	if d.Spec.Paused && !pausedCondExists {
		condition := deploymentutil.NewDeploymentCondition(extensions.DeploymentProgressing, v1.ConditionUnknown, deploymentutil.PausedDeployReason, "Deployment is paused")
		deploymentutil.SetDeploymentCondition(&d.Status, *condition)
		needsUpdate = true
	} else if !d.Spec.Paused && pausedCondExists {
		condition := deploymentutil.NewDeploymentCondition(extensions.DeploymentProgressing, v1.ConditionUnknown, deploymentutil.ResumedDeployReason, "Deployment is resumed")
		deploymentutil.SetDeploymentCondition(&d.Status, *condition)
		needsUpdate = true
	}

	if !needsUpdate {
		return nil
	}

	var err error
	d, err = dc.client.Extensions().Deployments(d.Namespace).UpdateStatus(d)
	return err
}

// calculateStatus calculates the latest status for the provided deployment by looking into the provided replica sets.
func calculateStatus(allRSs []*extensions.ReplicaSet, newRS *extensions.ReplicaSet, deployment *extensions.Deployment) extensions.DeploymentStatus {
	availableReplicas := deploymentutil.GetAvailableReplicaCountForReplicaSets(allRSs)
	totalReplicas := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
	unavailableReplicas := totalReplicas - availableReplicas
	// If unavailableReplicas is negative, then that means the Deployment has more available replicas running than
	// desired, eg. whenever it scales down. In such a case we should simply default unavailableReplicas to zero.
	if unavailableReplicas < 0 {
		unavailableReplicas = 0
	}

	status := extensions.DeploymentStatus{
		// TODO: Ensure that if we start retrying status updates, we won't pick up a new Generation value.
		ObservedGeneration:  deployment.Generation,
		Replicas:            deploymentutil.GetActualReplicaCountForReplicaSets(allRSs),
		UpdatedReplicas:     deploymentutil.GetActualReplicaCountForReplicaSets([]*extensions.ReplicaSet{newRS}),
		AvailableReplicas:   availableReplicas,
		UnavailableReplicas: unavailableReplicas,
	}

	// Copy conditions one by one so we won't mutate the original object.
	conditions := deployment.Status.Conditions
	for i := range conditions {
		status.Conditions = append(status.Conditions, conditions[i])
	}

	if availableReplicas >= *(deployment.Spec.Replicas)-deploymentutil.MaxUnavailable(*deployment) {
		minAvailability := deploymentutil.NewDeploymentCondition(extensions.DeploymentAvailable, v1.ConditionTrue, deploymentutil.MinimumReplicasAvailable, "Deployment has minimum availability.")
		deploymentutil.SetDeploymentCondition(&status, *minAvailability)
	} else {
		noMinAvailability := deploymentutil.NewDeploymentCondition(extensions.DeploymentAvailable, v1.ConditionFalse, deploymentutil.MinimumReplicasUnavailable, "Deployment does not have minimum availability.")
		deploymentutil.SetDeploymentCondition(&status, *noMinAvailability)
	}

	return status
}

func (dc *DeploymentController) calculateStatus(allRSs []*extensions.ReplicaSet, newRS *extensions.ReplicaSet, deployment *extensions.Deployment) extensions.DeploymentStatus {
	availableReplicas := deploymentutil.GetAvailableReplicaCountForReplicaSets(allRSs)
	totalReplicas := deploymentutil.GetReplicaCountForReplicaSets(allRSs)

	if availableReplicas >= *(deployment.Spec.Replicas)-deploymentutil.MaxUnavailable(*deployment) {
		minAvailability := deploymentutil.NewDeploymentCondition(extensions.DeploymentAvailable, v1.ConditionTrue, deploymentutil.MinimumReplicasAvailable, "Deployment has minimum availability.")
		deploymentutil.SetDeploymentCondition(&deployment.Status, *minAvailability)
	} else {
		noMinAvailability := deploymentutil.NewDeploymentCondition(extensions.DeploymentAvailable, v1.ConditionFalse, deploymentutil.MinimumReplicasUnavailable, "Deployment does not have minimum availability.")
		deploymentutil.SetDeploymentCondition(&deployment.Status, *noMinAvailability)
	}

	return extensions.DeploymentStatus{
		// TODO: Ensure that if we start retrying status updates, we won't pick up a new Generation value.
		ObservedGeneration:  deployment.Generation,
		Replicas:            deploymentutil.GetActualReplicaCountForReplicaSets(allRSs),
		UpdatedReplicas:     deploymentutil.GetActualReplicaCountForReplicaSets([]*extensions.ReplicaSet{newRS}),
		AvailableReplicas:   availableReplicas,
		UnavailableReplicas: totalReplicas - availableReplicas,
		Conditions:          deployment.Status.Conditions,
	}
}

// syncRolloutStatus updates the status of a deployment during a rollout. There are
// cases this helper will run that cannot be prevented from the scaling detection,
// for example a resync of the deployment after it was scaled up. In those cases,
// we shouldn't try to estimate any progress.
func (dc *DeploymentController) syncRolloutStatus(allRSs []*extensions.ReplicaSet, newRS *extensions.ReplicaSet, d *extensions.Deployment) error {
	newStatus := dc.calculateStatus(allRSs, newRS, d)

	// If there is no progressDeadlineSeconds set, remove any Progressing condition.
	if d.Spec.ProgressDeadlineSeconds == nil {
		util.RemoveDeploymentCondition(&newStatus, extensions.DeploymentProgressing)
	}

	// If there is only one replica set that is active then that means we are not running
	// a new rollout and this is a resync where we don't need to estimate any progress.
	// In such a case, we should simply not estimate any progress for this deployment.
	currentCond := util.GetDeploymentCondition(d.Status, extensions.DeploymentProgressing)
	isResyncEvent := newStatus.Replicas == newStatus.UpdatedReplicas && currentCond != nil && currentCond.Reason == util.NewRSAvailableReason
	// Check for progress only if there is a progress deadline set and the latest rollout
	// hasn't completed yet.
	if d.Spec.ProgressDeadlineSeconds != nil && !isResyncEvent {
		switch {
		case util.DeploymentComplete(d, &newStatus):
			// Update the deployment conditions with a message for the new replica set that
			// was successfully deployed. If the condition already exists, we ignore this update.
			msg := fmt.Sprintf("Replica set %q has successfully progressed.", newRS.Name)
			condition := util.NewDeploymentCondition(extensions.DeploymentProgressing, api.ConditionTrue, util.NewRSAvailableReason, msg)
			util.SetDeploymentCondition(&newStatus, *condition)

		case util.DeploymentProgressing(d, &newStatus):
			// If there is any progress made, continue by not checking if the deployment failed. This
			// behavior emulates the rolling updater progressDeadline check.
			msg := fmt.Sprintf("Replica set %q is progressing.", newRS.Name)
			condition := util.NewDeploymentCondition(extensions.DeploymentProgressing, api.ConditionTrue, util.ReplicaSetUpdatedReason, msg)
			// Update the current Progressing condition or add a new one if it doesn't exist.
			// If a Progressing condition with status=true already exists, we should update
			// everything but lastTransitionTime. SetDeploymentCondition already does that but
			// it also is not updating conditions when the reason of the new condition is the
			// same as the old. The Progressing condition is a special case because we want to
			// update with the same reason and change just lastUpdateTime iff we notice any
			// progress. That's why we handle it here.
			if currentCond != nil {
				if currentCond.Status == api.ConditionTrue {
					condition.LastTransitionTime = currentCond.LastTransitionTime
				}
				util.RemoveDeploymentCondition(&newStatus, extensions.DeploymentProgressing)
			}
			util.SetDeploymentCondition(&newStatus, *condition)

		case util.DeploymentTimedOut(d, &newStatus):
			// Update the deployment with a timeout condition. If the condition already exists,
			// we ignore this update.
			msg := fmt.Sprintf("Replica set %q has timed out progressing.", newRS.Name)
			condition := util.NewDeploymentCondition(extensions.DeploymentProgressing, api.ConditionFalse, util.TimedOutReason, msg)
			util.SetDeploymentCondition(&newStatus, *condition)
		}
	}

	// Move failure conditions of all replica sets in deployment conditions. For now,
	// only one failure condition is returned from getReplicaFailures.
	if replicaFailureCond := dc.getReplicaFailures(allRSs, newRS); len(replicaFailureCond) > 0 {
		// There will be only one ReplicaFailure condition on the replica set.
		util.SetDeploymentCondition(&newStatus, replicaFailureCond[0])
	} else {
		util.RemoveDeploymentCondition(&newStatus, extensions.DeploymentReplicaFailure)
	}

	// Do not update if there is nothing new to add.
	if reflect.DeepEqual(d.Status, newStatus) {
		// TODO: If there is no sign of progress at this point then there is a high chance that the
		// deployment is stuck. We should resync this deployment at some point[1] in the future[2] and
		// check if it has timed out. We definitely need this, otherwise we depend on the controller
		// resync interval. See https://github.com/kubernetes/kubernetes/issues/34458.
		//
		// [1] time.Now() + progressDeadlineSeconds - lastUpdateTime (of the Progressing condition).
		// [2] Use dc.queue.AddAfter
		return nil
	}

	newDeployment := d
	newDeployment.Status = newStatus
	_, err := dc.client.Extensions().Deployments(newDeployment.Namespace).UpdateStatus(newDeployment)
	return err
}

// Returns a replica set that matches the intent of the given deployment. Returns nil if the new replica set doesn't exist yet.
// 1. Get existing new RS (the RS that the given deployment targets, whose pod template is the same as deployment's).
// 2. If there's existing new RS, update its revision number if it's smaller than (maxOldRevision + 1), where maxOldRevision is the max revision number among all old RSes.
// 3. If there's no existing new RS and createIfNotExisted is true, create one with appropriate revision number (maxOldRevision + 1) and replicas.
// Note that the pod-template-hash will be added to adopted RSes and pods.
func (dc *DeploymentController) getNewReplicaSet(deployment *extensions.Deployment, rsList, oldRSs []*extensions.ReplicaSet, createIfNotExisted bool) (*extensions.ReplicaSet, error) {
	existingNewRS, err := deploymentutil.FindNewReplicaSet(deployment, rsList)
	if err != nil {
		return nil, err
	}

	// Calculate the max revision number among all old RSes
	maxOldRevision := deploymentutil.MaxRevision(oldRSs)
	// Calculate revision number for this new replica set
	newRevision := strconv.FormatInt(maxOldRevision+1, 10)

	// Latest replica set exists. We need to sync its annotations (includes copying all but
	// annotationsToSkip from the parent deployment, and update revision, desiredReplicas,
	// and maxReplicas) and also update the revision annotation in the deployment with the
	// latest revision.
	if existingNewRS != nil {
		objCopy, err := api.Scheme.Copy(existingNewRS)
		if err != nil {
			return nil, err
		}
		rsCopy := objCopy.(*extensions.ReplicaSet)

		// Set existing new replica set's annotation
		annotationsUpdated := deploymentutil.SetNewReplicaSetAnnotations(deployment, rsCopy, newRevision, true)
		minReadySecondsNeedsUpdate := rsCopy.Spec.MinReadySeconds != deployment.Spec.MinReadySeconds
		if annotationsUpdated || minReadySecondsNeedsUpdate {
			rsCopy.Spec.MinReadySeconds = deployment.Spec.MinReadySeconds
			return dc.client.Extensions().ReplicaSets(rsCopy.ObjectMeta.Namespace).Update(rsCopy)
		}

		updateConditions := deploymentutil.SetDeploymentRevision(deployment, newRevision)
		// If no other Progressing condition has been recorded and we need to estimate the progress
		// of this deployment then it is likely that old users started caring about progress. In that
		// case we need to take into account the first time we noticed their new replica set.
		cond := deploymentutil.GetDeploymentCondition(deployment.Status, extensions.DeploymentProgressing)
		if deployment.Spec.ProgressDeadlineSeconds != nil && cond == nil {
			msg := fmt.Sprintf("Found new replica set %q", rsCopy.Name)
			condition := deploymentutil.NewDeploymentCondition(extensions.DeploymentProgressing, v1.ConditionTrue, deploymentutil.FoundNewRSReason, msg)
			deploymentutil.SetDeploymentCondition(&deployment.Status, *condition)
			updateConditions = true
		}

		if updateConditions {
			if deployment, err = dc.client.Extensions().Deployments(deployment.Namespace).UpdateStatus(deployment); err != nil {
				return nil, err
			}
		}
		return rsCopy, nil
	}

	if !createIfNotExisted {
		return nil, nil
	}

	// new ReplicaSet does not exist, create one.
	namespace := deployment.Namespace
	podTemplateSpecHash := podutil.GetPodTemplateSpecHash(deployment.Spec.Template)
	newRSTemplate := deploymentutil.GetNewReplicaSetTemplate(deployment)
	// Add podTemplateHash label to selector.
	newRSSelector := labelsutil.CloneSelectorAndAddLabel(deployment.Spec.Selector, extensions.DefaultDeploymentUniqueLabelKey, podTemplateSpecHash)

	// Create new ReplicaSet
	newRS := extensions.ReplicaSet{
		ObjectMeta: v1.ObjectMeta{
			// Make the name deterministic, to ensure idempotence
			Name:      deployment.Name + "-" + fmt.Sprintf("%d", podTemplateSpecHash),
			Namespace: namespace,
		},
		Spec: extensions.ReplicaSetSpec{
			Replicas:        func(i int32) *int32 { return &i }(0),
			MinReadySeconds: deployment.Spec.MinReadySeconds,
			Selector:        newRSSelector,
			Template:        newRSTemplate,
		},
	}
	allRSs := append(oldRSs, &newRS)
	newReplicasCount, err := deploymentutil.NewRSNewReplicas(deployment, allRSs, &newRS)
	if err != nil {
		return nil, err
	}

	*(newRS.Spec.Replicas) = newReplicasCount
	// Set new replica set's annotation
	deploymentutil.SetNewReplicaSetAnnotations(deployment, &newRS, newRevision, false)
	createdRS, err := dc.client.Extensions().ReplicaSets(namespace).Create(&newRS)
	switch {
	// We may end up hitting this due to a slow cache or a fast resync of the deployment.
	// TODO: Restore once https://github.com/kubernetes/kubernetes/issues/29735 is fixed
	// ie. we start using a new hashing algorithm.
	case errors.IsAlreadyExists(err):
		return nil, err
	//	return dc.rsLister.ReplicaSets(namespace).Get(newRS.Name)
	case err != nil:
		msg := fmt.Sprintf("Failed to create new replica set %q: %v", newRS.Name, err)
		if deployment.Spec.ProgressDeadlineSeconds != nil {
//.........这里部分代码省略.........