core

package
v1.3.40 Latest Latest
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 Go to latest Published: Jul 15, 2021 License: MIT Imports: 27 Imported by: 0

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Index

Constants

View Source 
const (
	APIVersion   = "zalando.org/v1"
	KindStackSet = "StackSet"
	KindStack    = "Stack"
)
View Source 
const (
	StacksetHeritageLabelKey = "stackset"
	StackVersionLabelKey     = "stack-version"
)

Variables

View Source 
var (

	// PathTypeImplementationSpecific is the used implementation path type
	// for k8s.io/api/networking/v1.HTTPIngressPath resources.
	PathTypeImplementationSpecific = networking.PathTypeImplementationSpecific
)

Functions

func Convert_v2beta1_ExternalMetricSource_To_autoscaling_ExternalMetricSource added in v1.3.0 

func Convert_v2beta1_ExternalMetricSource_To_autoscaling_ExternalMetricSource(in *autoscalingv2beta1.ExternalMetricSource, out *autoscaling.ExternalMetricSource, s conversion.Scope) error

func Convert_v2beta1_MetricSpec_To_autoscaling_MetricSpec added in v1.3.0 

func Convert_v2beta1_MetricSpec_To_autoscaling_MetricSpec(in *v2beta1.MetricSpec, out *autoscaling.MetricSpec, s conversion.Scope) error

Convert_v2beta1_MetricSpec_To_autoscaling_MetricSpec is an autogenerated conversion function.

func Convert_v2beta1_ObjectMetricSource_To_autoscaling_ObjectMetricSource added in v1.3.0 

func Convert_v2beta1_ObjectMetricSource_To_autoscaling_ObjectMetricSource(in *autoscalingv2beta1.ObjectMetricSource, out *autoscaling.ObjectMetricSource, s conversion.Scope) error

func Convert_v2beta1_PodsMetricSource_To_autoscaling_PodsMetricSource added in v1.3.0 

func Convert_v2beta1_PodsMetricSource_To_autoscaling_PodsMetricSource(in *autoscalingv2beta1.PodsMetricSource, out *autoscaling.PodsMetricSource, s conversion.Scope) error

func Convert_v2beta1_ResourceMetricSource_To_autoscaling_ResourceMetricSource added in v1.3.0 

func Convert_v2beta1_ResourceMetricSource_To_autoscaling_ResourceMetricSource(in *autoscalingv2beta1.ResourceMetricSource, out *autoscaling.ResourceMetricSource, s conversion.Scope) error

func IsResourceUpToDate 

func IsResourceUpToDate(stack *zv1.Stack, resourceMeta metav1.ObjectMeta) bool

IsResourceUpToDate checks whether the stack is assigned to the resource by comparing the stack generation with the corresponding resource annotation.

Types

type MetricsList 

type MetricsList []autoscaling.MetricSpec

func (MetricsList) Len 

func (l MetricsList) Len() int

func (MetricsList) Less 

func (l MetricsList) Less(i, j int) bool

func (MetricsList) Swap 

func (l MetricsList) Swap(i, j int)

type MetricsReporter 

type MetricsReporter struct {
	// contains filtered or unexported fields
}

func NewMetricsReporter 

func NewMetricsReporter(registry prometheus.Registerer) (*MetricsReporter, error)

func (*MetricsReporter) Report 

func (reporter *MetricsReporter) Report(stacksets map[types.UID]*StackSetContainer) error

func (*MetricsReporter) ReportError added in v1.1.23 

func (reporter *MetricsReporter) ReportError()

func (*MetricsReporter) ReportPanic added in v1.3.28 

func (reporter *MetricsReporter) ReportPanic()

type PrescalingTrafficReconciler 

type PrescalingTrafficReconciler struct {
	ResetHPAMinReplicasTimeout time.Duration
}

PrescalingTrafficReconciler is a traffic reconciler that forcibly scales up the deployment before switching traffic

func (PrescalingTrafficReconciler) Reconcile 

func (r PrescalingTrafficReconciler) Reconcile(stacks map[string]*StackContainer, currentTimestamp time.Time) error

type SimpleTrafficReconciler 

type SimpleTrafficReconciler struct{}

SimpleTrafficReconciler is the most simple traffic reconciler which implements the default traffic switching supported in the stackset-controller.

func (SimpleTrafficReconciler) Reconcile 

func (SimpleTrafficReconciler) Reconcile(stacks map[string]*StackContainer, currentTimestamp time.Time) error

type StackContainer 

type StackContainer struct {
	// Stack represents the desired state of the stack, updated by the reconciliation logic
	Stack *zv1.Stack

	// PendingRemoval is set to true if the stack should be deleted
	PendingRemoval bool

	// Resources contains Kubernetes entities for the Stack's resources (Deployment, Ingress, etc)
	Resources StackResources
	// contains filtered or unexported fields
}

StackContainer is a container for storing the full state of a Stack including all the managed sub-resources. This includes the Stack resource itself and all the sub resources like Deployment, HPA and Service.

func (*StackContainer) GenerateDeployment 

func (sc *StackContainer) GenerateDeployment() *appsv1.Deployment

func (*StackContainer) GenerateHPA 

func (sc *StackContainer) GenerateHPA() (*autoscaling.HorizontalPodAutoscaler, error)

func (*StackContainer) GenerateIngress 

func (sc *StackContainer) GenerateIngress() (*networking.Ingress, error)

func (*StackContainer) GenerateRouteGroup added in v1.3.5 

func (sc *StackContainer) GenerateRouteGroup() (*rgv1.RouteGroup, error)

func (*StackContainer) GenerateService 

func (sc *StackContainer) GenerateService() (*v1.Service, error)

func (*StackContainer) GenerateStackStatus 

func (sc *StackContainer) GenerateStackStatus() *zv1.StackStatus

func (*StackContainer) HasBackendPort added in v1.1.0 

func (sc *StackContainer) HasBackendPort() bool

func (*StackContainer) HasTraffic 

func (sc *StackContainer) HasTraffic() bool

func (*StackContainer) IsAutoscaled 

func (sc *StackContainer) IsAutoscaled() bool

func (*StackContainer) IsReady 

func (sc *StackContainer) IsReady() bool

func (*StackContainer) MaxReplicas 

func (sc *StackContainer) MaxReplicas() int32

func (*StackContainer) Name 

func (sc *StackContainer) Name() string

func (*StackContainer) Namespace 

func (sc *StackContainer) Namespace() string

func (*StackContainer) ScaledDown 

func (sc *StackContainer) ScaledDown() bool

type StackResources 

type StackResources struct {
	Deployment *appsv1.Deployment
	HPA        *autoscaling.HorizontalPodAutoscaler
	Service    *v1.Service
	Ingress    *networking.Ingress
	RouteGroup *rgv1.RouteGroup
}

StackResources describes the resources of a stack.

type StackSetContainer 

type StackSetContainer struct {
	StackSet *zv1.StackSet

	// StackContainers is a set of stacks belonging to the StackSet
	// including the Stack sub resources like Deployments and Services.
	StackContainers map[types.UID]*StackContainer

	// Ingress defines the current Ingress resource belonging to the
	// StackSet. This is a reference to the actual resource while
	// `StackSet.Spec.Ingress` defines the ingress configuration specified
	// by the user on the StackSet.
	Ingress *networking.Ingress

	// RouteGroups defines the current RouteGroup resource belonging to the
	// StackSet. This is a reference to the actual resource while
	// `StackSet.Spec.RouteGroup` defines the route group configuration
	// specified by the user on the StackSet.
	RouteGroup *rgv1.RouteGroup

	// TrafficReconciler is the reconciler implementation used for
	// switching traffic between stacks. E.g. for prescaling stacks before
	// switching traffic.
	TrafficReconciler TrafficReconciler
	// contains filtered or unexported fields
}

StackSetContainer is a container for storing the full state of a StackSet including the sub-resources which are part of the StackSet. It respresents a snapshot of the resources currently in the Cluster. This includes an optional Ingress resource as well as the current Traffic distribution. It also contains a set of StackContainers which respresents the full state of the individual Stacks part of the StackSet.

func NewContainer added in v1.1.20 

func NewContainer(stackset *zv1.StackSet, reconciler TrafficReconciler, backendWeightsAnnotationKey string, clusterDomains []string) *StackSetContainer

func (*StackSetContainer) GenerateIngress 

func (ssc *StackSetContainer) GenerateIngress() (*networking.Ingress, error)

func (*StackSetContainer) GenerateRouteGroup added in v1.3.5 

func (ssc *StackSetContainer) GenerateRouteGroup() (*rgv1.RouteGroup, error)

func (*StackSetContainer) GenerateStackSetStatus 

func (ssc *StackSetContainer) GenerateStackSetStatus() *zv1.StackSetStatus

func (*StackSetContainer) GenerateStackSetTraffic added in v1.1.0 

func (ssc *StackSetContainer) GenerateStackSetTraffic() []*zv1.DesiredTraffic

func (*StackSetContainer) ManageTraffic 

func (ssc *StackSetContainer) ManageTraffic(currentTimestamp time.Time) error

ManageTraffic handles the traffic reconciler logic

func (*StackSetContainer) MarkExpiredStacks 

func (ssc *StackSetContainer) MarkExpiredStacks()

MarkExpiredStacks marks stacks that should be deleted

func (*StackSetContainer) NewStack 

func (ssc *StackSetContainer) NewStack() (*StackContainer, string)

NewStack returns an (optional) stack that should be created

func (*StackSetContainer) TrafficChanges 

func (ssc *StackSetContainer) TrafficChanges() []TrafficChange

func (*StackSetContainer) UpdateFromResources 

func (ssc *StackSetContainer) UpdateFromResources() error

UpdateFromResources populates stack state information (e.g. replica counts or traffic) from related resources

type TrafficChange 

type TrafficChange struct {
	StackName        string
	OldTrafficWeight float64
	NewTrafficWeight float64
}

TrafficChange contains information about a traffic change event

func (TrafficChange) String 

func (tc TrafficChange) String() string

type TrafficReconciler 

type TrafficReconciler interface {
	// Handle the traffic switching and/or scaling logic.
	Reconcile(stacks map[string]*StackContainer, currentTimestamp time.Time) error
}

Source Files

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