8190225339

Committed 07 Mar 2024 03:00PM UTC coverage: 51.299% (-1.0%) from 52.279%

Build # 8190225339

Build Type

Pull #593

github

Committed by

linki

Commit Message

add inline solution for versioned configmaps

Pull Request Pull Request #593: [2/3] Add Inline Solution for ConfigMaps

Run Details

5 of 127 new or added lines in 5 files covered. (3.94%)

53 existing lines in 2 files now uncovered.

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Source File
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89.72

/pkg/core/stack_resources.go

package core

import (
        "fmt"
        "sort"
        "strconv"
        "strings"

        log "github.com/sirupsen/logrus"
        rgv1 "github.com/szuecs/routegroup-client/apis/zalando.org/v1"
        zv1 "github.com/zalando-incubator/stackset-controller/pkg/apis/zalando.org/v1"
        appsv1 "k8s.io/api/apps/v1"
        autoscaling "k8s.io/api/autoscaling/v2"
        v1 "k8s.io/api/core/v1"
        networking "k8s.io/api/networking/v1"
        metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
        "k8s.io/apimachinery/pkg/labels"
        "k8s.io/apimachinery/pkg/util/intstr"
        "k8s.io/apimachinery/pkg/util/sets"
)

const (
        apiVersionAppsV1 = "apps/v1"
        kindDeployment   = "Deployment"

        SegmentSuffix       = "-traffic-segment"
        IngressPredicateKey = "zalando.org/skipper-predicate"
)

type ingressOrRouteGroupSpec interface {
        GetAnnotations() map[string]string
        GetHosts() []string
}

var (
        // set implementation with 0 Byte value
        selectorLabels = map[string]struct{}{
                StacksetHeritageLabelKey: {},
                StackVersionLabelKey:     {},
        }

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

func mapCopy(m map[string]string) map[string]string {
        newMap := map[string]string{}
        for k, v := range m {
                newMap[k] = v
        }
        return newMap
}

// limitLabels returns a limited set of labels based on the validKeys.
func limitLabels(labels map[string]string, validKeys map[string]struct{}) map[string]string {
        newLabels := make(map[string]string, len(labels))
        for k, v := range labels {
                if _, ok := validKeys[k]; ok {
                        newLabels[k] = v
                }
        }
        return newLabels
}

// templateObjectMetaInjectLabels injects labels into a pod template spec.
func objectMetaInjectLabels(objectMeta metav1.ObjectMeta, labels map[string]string) metav1.ObjectMeta {
        if objectMeta.Labels == nil {
                objectMeta.Labels = map[string]string{}
        }
        for key, value := range labels {
                if _, ok := objectMeta.Labels[key]; !ok {
                        objectMeta.Labels[key] = value
                }
        }
        return objectMeta
}

func (sc *StackContainer) objectMeta(segment bool) metav1.ObjectMeta {
        resourceLabels := mapCopy(sc.Stack.Labels)

        name := sc.Name()
        if segment {
                name += SegmentSuffix
        }

        return metav1.ObjectMeta{
                Name:      name,
                Namespace: sc.Namespace(),
                Annotations: map[string]string{
                        stackGenerationAnnotationKey: strconv.FormatInt(sc.Stack.Generation, 10),
                },
                Labels: resourceLabels,
                OwnerReferences: []metav1.OwnerReference{
                        {
                                APIVersion: APIVersion,
                                Kind:       KindStack,
                                Name:       sc.Name(),
                                UID:        sc.Stack.UID,
                        },
                },
        }
}

func (sc *StackContainer) resourceMeta() metav1.ObjectMeta {
        return sc.objectMeta(false)
}

// getServicePorts gets the service ports to be used for the stack service.
func getServicePorts(stackSpec zv1.StackSpecInternal, backendPort *intstr.IntOrString) ([]v1.ServicePort, error) {
        var servicePorts []v1.ServicePort
        if stackSpec.StackSpec.Service == nil ||
                len(stackSpec.StackSpec.Service.Ports) == 0 {

                servicePorts = servicePortsFromContainers(
                        stackSpec.StackSpec.PodTemplate.Spec.Containers,
                )
        } else {
                servicePorts = stackSpec.StackSpec.Service.Ports
        }

        // validate that one port in the list maps to the backendPort.
        if backendPort != nil {
                for _, port := range servicePorts {
                        switch backendPort.Type {
                        case intstr.Int:
                                if port.Port == backendPort.IntVal {
                                        return servicePorts, nil
                                }
                        case intstr.String:
                                if port.Name == backendPort.StrVal {
                                        return servicePorts, nil
                                }
                        }
                }

                return nil, fmt.Errorf("no service ports matching backendPort '%s'", backendPort.String())
        }

        return servicePorts, nil
}

// servicePortsFromTemplate gets service port from pod template.
func servicePortsFromContainers(containers []v1.Container) []v1.ServicePort {
        ports := make([]v1.ServicePort, 0)
        for i, container := range containers {
                for j, port := range container.Ports {
                        name := fmt.Sprintf("port-%d-%d", i, j)
                        if port.Name != "" {
                                name = port.Name
                        }
                        servicePort := v1.ServicePort{
                                Name:       name,
                                Protocol:   port.Protocol,
                                Port:       port.ContainerPort,
                                TargetPort: intstr.FromInt(int(port.ContainerPort)),
                        }
                        // set default protocol if not specified
                        if servicePort.Protocol == "" {
                                servicePort.Protocol = v1.ProtocolTCP
                        }
                        ports = append(ports, servicePort)
                }
        }
        return ports
}

func (sc *StackContainer) selector() map[string]string {
        return limitLabels(sc.Stack.Labels, selectorLabels)
}

func (sc *StackContainer) GenerateDeployment() *appsv1.Deployment {
        stack := sc.Stack

        desiredReplicas := sc.stackReplicas
        if sc.prescalingActive {
                desiredReplicas = sc.prescalingReplicas
        }

        var updatedReplicas *int32

        if desiredReplicas != 0 && !sc.ScaledDown() {
                // Stack scaled up, rescale the deployment if it's at 0 replicas, or if HPA is unused and we don't run autoscaling
                if sc.deploymentReplicas == 0 || (!sc.IsAutoscaled() && desiredReplicas != sc.deploymentReplicas) {
                        updatedReplicas = wrapReplicas(desiredReplicas)
                }
        } else {
                // Stack scaled down (manually or because it doesn't receive traffic), check if we need to scale down the deployment
                if sc.deploymentReplicas != 0 {
                        updatedReplicas = wrapReplicas(0)
                }
        }

        if updatedReplicas == nil {
                updatedReplicas = wrapReplicas(sc.deploymentReplicas)
        }

        var strategy *appsv1.DeploymentStrategy
        if stack.Spec.StackSpec.Strategy != nil {
                strategy = stack.Spec.StackSpec.Strategy.DeepCopy()
        }

        embeddedCopy := stack.Spec.StackSpec.PodTemplate.EmbeddedObjectMeta.DeepCopy()

        templateObjectMeta := metav1.ObjectMeta{
                Annotations: embeddedCopy.Annotations,
                Labels:      embeddedCopy.Labels,
        }

        deployment := &appsv1.Deployment{
                ObjectMeta: sc.resourceMeta(),
                Spec: appsv1.DeploymentSpec{
                        Replicas:        updatedReplicas,
                        MinReadySeconds: sc.Stack.Spec.StackSpec.MinReadySeconds,
                        Selector: &metav1.LabelSelector{
                                MatchLabels: sc.selector(),
                        },
                        Template: v1.PodTemplateSpec{
                                ObjectMeta: objectMetaInjectLabels(templateObjectMeta, stack.Labels),
                                Spec:       *stack.Spec.StackSpec.PodTemplate.Spec.DeepCopy(),
                        },
                },
        }
        if strategy != nil {
                deployment.Spec.Strategy = *strategy
        }
        return deployment
}

func (sc *StackContainer) GenerateHPAToSegment() (
        *autoscaling.HorizontalPodAutoscaler,
        error,
) {
        return sc.generateHPA(true)
}

func (sc *StackContainer) GenerateHPA() (
        *autoscaling.HorizontalPodAutoscaler,
        error,
) {
        return sc.generateHPA(false)

}

func (sc *StackContainer) generateHPA(toSegment bool) (
        *autoscaling.HorizontalPodAutoscaler,
        error,
) {
        autoscalerSpec := sc.Stack.Spec.StackSpec.Autoscaler
        trafficWeight := sc.actualTrafficWeight

        if autoscalerSpec == nil {
                return nil, nil
        }

        result := &autoscaling.HorizontalPodAutoscaler{
                ObjectMeta: sc.resourceMeta(),
                TypeMeta: metav1.TypeMeta{
                        Kind:       "HorizontalPodAutoscaler",
                        APIVersion: "autoscaling/v2",
                },
                Spec: autoscaling.HorizontalPodAutoscalerSpec{
                        ScaleTargetRef: autoscaling.CrossVersionObjectReference{
                                APIVersion: apiVersionAppsV1,
                                Kind:       kindDeployment,
                                Name:       sc.Name(),
                        },
                },
        }

        result.Spec.MinReplicas = autoscalerSpec.MinReplicas
        result.Spec.MaxReplicas = autoscalerSpec.MaxReplicas

        ingressResourceName := sc.stacksetName
        if toSegment {
                ingressResourceName = sc.Name() + SegmentSuffix
        }

        metrics, annotations, err := convertCustomMetrics(
                ingressResourceName,
                sc.Name(),
                sc.Namespace(),
                autoscalerMetricsList(autoscalerSpec.Metrics),
                trafficWeight,
        )

        if err != nil {
                return nil, err
        }
        result.Spec.Metrics = metrics
        result.Annotations = mergeLabels(result.Annotations, annotations)
        result.Spec.Behavior = autoscalerSpec.Behavior

        // If prescaling is enabled, ensure we have at least `precalingReplicas` pods
        if sc.prescalingActive && (result.Spec.MinReplicas == nil || *result.Spec.MinReplicas < sc.prescalingReplicas) {
                pr := sc.prescalingReplicas
                result.Spec.MinReplicas = &pr
        }

        return result, nil
}

func (sc *StackContainer) GenerateService() (*v1.Service, error) {
        // get service ports to be used for the service
        var backendPort *intstr.IntOrString
        // Ingress or external managed Ingress
        if sc.HasBackendPort() {
                backendPort = sc.backendPort
        }

        servicePorts, err := getServicePorts(sc.Stack.Spec, backendPort)
        if err != nil {
                return nil, err
        }

        metaObj := sc.resourceMeta()
        stackSpec := sc.Stack.Spec
        if stackSpec.StackSpec.Service != nil {
                metaObj.Annotations = mergeLabels(
                        metaObj.Annotations,
                        stackSpec.StackSpec.Service.Annotations,
                )
        }
        return &v1.Service{
                ObjectMeta: metaObj,
                Spec: v1.ServiceSpec{
                        Selector: sc.selector(),
                        Type:     v1.ServiceTypeClusterIP,
                        Ports:    servicePorts,
                },
        }, nil
}

func (sc *StackContainer) stackHostnames(
        spec ingressOrRouteGroupSpec,
        segment bool,
) ([]string, error) {
        // The Ingress segment uses the original hostnames
        if segment {
                return spec.GetHosts(), nil
        }
        result := sets.NewString()

        // Old-style autogenerated hostnames
        for _, host := range spec.GetHosts() {
                for _, domain := range sc.clusterDomains {
                        if strings.HasSuffix(host, domain) {
                                result.Insert(fmt.Sprintf("%s.%s", sc.Name(), domain))
                        } else {
                                log.Debugf(
                                        "Ingress host: %s suffix did not match cluster-domain %s",
                                        host,
                                        domain,
                                )
                        }
                }
        }
        return result.List(), nil
}

func (sc *StackContainer) GenerateIngress() (*networking.Ingress, error) {
        return sc.generateIngress(false)
}

func (sc *StackContainer) GenerateIngressSegment() (
        *networking.Ingress,
        error,
) {
        res, err := sc.generateIngress(true)
        if err != nil || res == nil {
                return res, err
        }

        // Synchronize annotations specified in the StackSet.
        res.Annotations = syncAnnotations(
                res.Annotations,
                sc.syncAnnotationsInIngress,
                sc.ingressAnnotationsToSync,
        )

        if predVal, ok := res.Annotations[IngressPredicateKey]; !ok || predVal == "" {
                res.Annotations = mergeLabels(
                        res.Annotations,
                        map[string]string{IngressPredicateKey: sc.trafficSegment()},
                )
        } else {
                res.Annotations = mergeLabels(
                        res.Annotations,
                        map[string]string{
                                IngressPredicateKey: sc.trafficSegment() + " && " + predVal,
                        },
                )
        }

        return res, nil
}

func (sc *StackContainer) generateIngress(segment bool) (
        *networking.Ingress,
        error,
) {

        if !sc.HasBackendPort() || sc.ingressSpec == nil {
                return nil, nil
        }

        hostnames, err := sc.stackHostnames(sc.ingressSpec, segment)
        if err != nil {
                return nil, err
        }
        if len(hostnames) == 0 {
                return nil, nil
        }

        rules := make([]networking.IngressRule, 0, len(hostnames))
        for _, hostname := range hostnames {
                rules = append(rules, networking.IngressRule{
                        IngressRuleValue: networking.IngressRuleValue{
                                HTTP: &networking.HTTPIngressRuleValue{
                                        Paths: []networking.HTTPIngressPath{
                                                {
                                                        PathType: &PathTypeImplementationSpecific,
                                                        Path:     sc.ingressSpec.Path,
                                                        Backend: networking.IngressBackend{
                                                                Service: &networking.IngressServiceBackend{
                                                                        Name: sc.Name(),
                                                                        Port: networking.ServiceBackendPort{
                                                                                Name:   sc.backendPort.StrVal,
                                                                                Number: sc.backendPort.IntVal,
                                                                        },
                                                                },
                                                        },
                                                },
                                        },
                                },
                        },
                        Host: hostname,
                })
        }

        // sort rules by hostname for a stable order
        sort.Slice(rules, func(i, j int) bool {
                return rules[i].Host < rules[j].Host
        })

        result := &networking.Ingress{
                ObjectMeta: sc.objectMeta(segment),
                Spec: networking.IngressSpec{
                        Rules: rules,
                },
        }

        // insert annotations
        result.Annotations = mergeLabels(
                result.Annotations,
                sc.ingressSpec.GetAnnotations(),
        )

        return result, nil
}

func (sc *StackContainer) GenerateRouteGroup() (*rgv1.RouteGroup, error) {
        return sc.generateRouteGroup(false)
}

func (sc *StackContainer) GenerateRouteGroupSegment() (
        *rgv1.RouteGroup,
        error,
) {
        res, err := sc.generateRouteGroup(true)
        if err != nil || res == nil {
                return res, err
        }

        // Synchronize annotations specified in the StackSet.
        res.Annotations = syncAnnotations(
                res.Annotations,
                sc.syncAnnotationsInRouteGroup,
                sc.ingressAnnotationsToSync,
        )

        segmentedRoutes := []rgv1.RouteGroupRouteSpec{}
        for _, r := range res.Spec.Routes {
                r.Predicates = append(r.Predicates, sc.trafficSegment())
                segmentedRoutes = append(segmentedRoutes, r)
        }
        res.Spec.Routes = segmentedRoutes

        return res, nil
}

func (sc *StackContainer) generateRouteGroup(segment bool) (
        *rgv1.RouteGroup,
        error,
) {
        if !sc.HasBackendPort() || sc.routeGroupSpec == nil {
                return nil, nil
        }

        hostnames, err := sc.stackHostnames(sc.routeGroupSpec, segment)
        if err != nil {
                return nil, err
        }
        if len(hostnames) == 0 {
                return nil, nil
        }

        result := &rgv1.RouteGroup{
                ObjectMeta: sc.objectMeta(segment),
                Spec: rgv1.RouteGroupSpec{
                        Hosts: hostnames,
                        Backends: []rgv1.RouteGroupBackend{
                                {
                                        Name:        sc.Name(),
                                        Type:        rgv1.ServiceRouteGroupBackend,
                                        ServiceName: sc.Name(),
                                        ServicePort: sc.backendPort.IntValue(),
                                        Algorithm:   sc.routeGroupSpec.LBAlgorithm,
                                },
                        },
                        DefaultBackends: []rgv1.RouteGroupBackendReference{
                                {
                                        BackendName: sc.Name(),
                                        Weight:      100,
                                },
                        },
                },
        }

        result.Spec.Routes = sc.routeGroupSpec.Routes

        // validate not overlapping with main backend
        for _, backend := range sc.routeGroupSpec.AdditionalBackends {
                if backend.Name == sc.Name() {
                        return nil, fmt.Errorf("invalid additionalBackend '%s', overlaps with Stack name", backend.Name)
                }
                if backend.ServiceName == sc.Name() {
                        return nil, fmt.Errorf("invalid additionalBackend '%s', serviceName '%s' overlaps with Stack name", backend.Name, backend.ServiceName)
                }
                result.Spec.Backends = append(result.Spec.Backends, backend)
        }

        // sort backends to ensure have a consistent generated RouteGroup resource
        sort.Slice(result.Spec.Backends, func(i, j int) bool {
                return result.Spec.Backends[i].Name < result.Spec.Backends[j].Name
        })

        // insert annotations
        result.Annotations = mergeLabels(
                result.Annotations,
                sc.routeGroupSpec.GetAnnotations(),
        )

        return result, nil
}

func (sc *StackContainer) trafficSegment() string {
        return fmt.Sprintf(
                segmentString,
                sc.segmentLowerLimit,
                sc.segmentUpperLimit,
        )
}

func (sc *StackContainer) UpdateObjectMeta(objMeta *metav1.ObjectMeta) *metav1.ObjectMeta {
        metaObj := sc.resourceMeta()
        objMeta.OwnerReferences = metaObj.OwnerReferences
        objMeta.Labels = mergeLabels(metaObj.Labels, objMeta.Labels)
        objMeta.Annotations = mergeLabels(metaObj.Annotations, objMeta.Annotations)

        return objMeta
}

func (sc *StackContainer) GenerateConfigMaps() ([]*v1.ConfigMap, error) {
        result := []*v1.ConfigMap{}

        for _, configResource := range sc.Stack.Spec.ConfigurationResources {
                if !configResource.IsConfigMap() {
                        continue
                }

                metaObj := sc.resourceMeta()
                metaObj.Name = metaObj.Name + "-" + configResource.GetName()
                metaObj.OwnerReferences = []metav1.OwnerReference{
                        {
                                APIVersion: "zalando.org/v1",
                                Kind:       "Stack",
                                Name:       sc.Name(),
                                UID:        sc.Stack.UID,
                        },
                }

                base := &v1.ConfigMap{
                        ObjectMeta: metaObj,
                        Data:       configResource.ConfigMap.Data,
                }

                result = append(result, base)
        }

        return result, nil
}

func (sc *StackContainer) GenerateStackStatus() *zv1.StackStatus {
        prescaling := zv1.PrescalingStatus{}
        if sc.prescalingActive {
                prescaling = zv1.PrescalingStatus{
                        Active:               sc.prescalingActive,
                        Replicas:             sc.prescalingReplicas,
                        DesiredTrafficWeight: sc.prescalingDesiredTrafficWeight,
                        LastTrafficIncrease:  wrapTime(sc.prescalingLastTrafficIncrease),
                }
        }
        return &zv1.StackStatus{
                ActualTrafficWeight:  sc.actualTrafficWeight,
                DesiredTrafficWeight: sc.desiredTrafficWeight,
                Replicas:             sc.createdReplicas,
                ReadyReplicas:        sc.readyReplicas,
                UpdatedReplicas:      sc.updatedReplicas,
                DesiredReplicas:      sc.deploymentReplicas,
                Prescaling:           prescaling,
                NoTrafficSince:       wrapTime(sc.noTrafficSince),
                LabelSelector:        labels.Set(sc.selector()).String(),
        }
}

1	package core
2
3	import (
4	"fmt"
5	"sort"
6	"strconv"
7	"strings"
8
9	log "github.com/sirupsen/logrus"
10	rgv1 "github.com/szuecs/routegroup-client/apis/zalando.org/v1"
11	zv1 "github.com/zalando-incubator/stackset-controller/pkg/apis/zalando.org/v1"
12	appsv1 "k8s.io/api/apps/v1"
13	autoscaling "k8s.io/api/autoscaling/v2"
14	v1 "k8s.io/api/core/v1"
15	networking "k8s.io/api/networking/v1"
16	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
17	"k8s.io/apimachinery/pkg/labels"
18	"k8s.io/apimachinery/pkg/util/intstr"
19	"k8s.io/apimachinery/pkg/util/sets"
20	)
21
22	const (
23	apiVersionAppsV1 = "apps/v1"
24	kindDeployment = "Deployment"
25
26	SegmentSuffix = "-traffic-segment"
27	IngressPredicateKey = "zalando.org/skipper-predicate"
28	)
29
30	type ingressOrRouteGroupSpec interface {
31	GetAnnotations() map[string]string
32	GetHosts() []string
33	}
34
35	var (
36	// set implementation with 0 Byte value
37	selectorLabels = map[string]struct{}{
38	StacksetHeritageLabelKey: {},
39	StackVersionLabelKey: {},
40	}
41
42	// PathTypeImplementationSpecific is the used implementation path type
43	// for k8s.io/api/networking/v1.HTTPIngressPath resources.
44	PathTypeImplementationSpecific = networking.PathTypeImplementationSpecific
45	)
46
47	func mapCopy(m map[string]string) map[string]string {	1✔
48	newMap := map[string]string{}	1✔
49	for k, v := range m {	2✔
50	newMap[k] = v	1✔
51	}	1✔
52	return newMap	1✔
53	}
54
55	// limitLabels returns a limited set of labels based on the validKeys.
56	func limitLabels(labels map[string]string, validKeys map[string]struct{}) map[string]string {	1✔
57	newLabels := make(map[string]string, len(labels))	1✔
58	for k, v := range labels {	2✔
59	if _, ok := validKeys[k]; ok {	2✔
60	newLabels[k] = v	1✔
61	}	1✔
62	}
63	return newLabels	1✔
64	}
65
66	// templateObjectMetaInjectLabels injects labels into a pod template spec.
67	func objectMetaInjectLabels(objectMeta metav1.ObjectMeta, labels map[string]string) metav1.ObjectMeta {	1✔
68	if objectMeta.Labels == nil {	2✔
69	objectMeta.Labels = map[string]string{}	1✔
70	}	1✔
71	for key, value := range labels {	2✔
72	if _, ok := objectMeta.Labels[key]; !ok {	2✔
73	objectMeta.Labels[key] = value	1✔
74	}	1✔
75	}
76	return objectMeta	1✔
77	}
78
79	func (sc *StackContainer) objectMeta(segment bool) metav1.ObjectMeta {	1✔
80	resourceLabels := mapCopy(sc.Stack.Labels)	1✔
81		1✔
82	name := sc.Name()	1✔
83	if segment {	2✔
84	name += SegmentSuffix	1✔
85	}	1✔
86
87	return metav1.ObjectMeta{	1✔
88	Name: name,	1✔
89	Namespace: sc.Namespace(),	1✔
90	Annotations: map[string]string{	1✔
91	stackGenerationAnnotationKey: strconv.FormatInt(sc.Stack.Generation, 10),	1✔
92	},	1✔
93	Labels: resourceLabels,	1✔
94	OwnerReferences: []metav1.OwnerReference{	1✔
95	{	1✔
96	APIVersion: APIVersion,	1✔
97	Kind: KindStack,	1✔
98	Name: sc.Name(),	1✔
99	UID: sc.Stack.UID,	1✔
100	},	1✔
101	},	1✔
102	}	1✔
103	}
104
105	func (sc *StackContainer) resourceMeta() metav1.ObjectMeta {	1✔
106	return sc.objectMeta(false)	1✔
107	}	1✔
108
109	// getServicePorts gets the service ports to be used for the stack service.
110	func getServicePorts(stackSpec zv1.StackSpecInternal, backendPort *intstr.IntOrString) ([]v1.ServicePort, error) {	1✔
111	var servicePorts []v1.ServicePort	1✔
112	if stackSpec.StackSpec.Service == nil \|\|	1✔
113	len(stackSpec.StackSpec.Service.Ports) == 0 {	2✔
114		1✔
115	servicePorts = servicePortsFromContainers(	1✔
116	stackSpec.StackSpec.PodTemplate.Spec.Containers,	1✔
117	)	1✔
118	} else {	2✔
119	servicePorts = stackSpec.StackSpec.Service.Ports	1✔
120	}	1✔
121
122	// validate that one port in the list maps to the backendPort.
123	if backendPort != nil {	2✔
124	for _, port := range servicePorts {	2✔
125	switch backendPort.Type {	1✔
126	case intstr.Int:	1✔
127	if port.Port == backendPort.IntVal {	2✔
128	return servicePorts, nil	1✔
129	}	1✔
130	case intstr.String:	1✔
131	if port.Name == backendPort.StrVal {	2✔
132	return servicePorts, nil	1✔
133	}	1✔
134	}
135	}
136
137	return nil, fmt.Errorf("no service ports matching backendPort '%s'", backendPort.String())	1✔
138	}
139
140	return servicePorts, nil	1✔
141	}
142
143	// servicePortsFromTemplate gets service port from pod template.
144	func servicePortsFromContainers(containers []v1.Container) []v1.ServicePort {	1✔
145	ports := make([]v1.ServicePort, 0)	1✔
146	for i, container := range containers {	2✔
147	for j, port := range container.Ports {	2✔
148	name := fmt.Sprintf("port-%d-%d", i, j)	1✔
149	if port.Name != "" {	2✔
150	name = port.Name	1✔
151	}	1✔
152	servicePort := v1.ServicePort{	1✔
153	Name: name,	1✔
154	Protocol: port.Protocol,	1✔
155	Port: port.ContainerPort,	1✔
156	TargetPort: intstr.FromInt(int(port.ContainerPort)),	1✔
157	}	1✔
158	// set default protocol if not specified	1✔
159	if servicePort.Protocol == "" {	2✔
160	servicePort.Protocol = v1.ProtocolTCP	1✔
161	}	1✔
162	ports = append(ports, servicePort)	1✔
163	}
164	}
165	return ports	1✔
166	}
167
168	func (sc *StackContainer) selector() map[string]string {	1✔
169	return limitLabels(sc.Stack.Labels, selectorLabels)	1✔
170	}	1✔
171
172	func (sc StackContainer) GenerateDeployment() appsv1.Deployment {	1✔
173	stack := sc.Stack	1✔
174		1✔
175	desiredReplicas := sc.stackReplicas	1✔
176	if sc.prescalingActive {	2✔
177	desiredReplicas = sc.prescalingReplicas	1✔
178	}	1✔
179
180	var updatedReplicas *int32	1✔
181		1✔
182	if desiredReplicas != 0 && !sc.ScaledDown() {	2✔
183	// Stack scaled up, rescale the deployment if it's at 0 replicas, or if HPA is unused and we don't run autoscaling	1✔
184	if sc.deploymentReplicas == 0 \|\| (!sc.IsAutoscaled() && desiredReplicas != sc.deploymentReplicas) {	2✔
185	updatedReplicas = wrapReplicas(desiredReplicas)	1✔
186	}	1✔
187	} else {	1✔
188	// Stack scaled down (manually or because it doesn't receive traffic), check if we need to scale down the deployment	1✔
189	if sc.deploymentReplicas != 0 {	2✔
190	updatedReplicas = wrapReplicas(0)	1✔
191	}	1✔
192	}
193
194	if updatedReplicas == nil {	2✔
195	updatedReplicas = wrapReplicas(sc.deploymentReplicas)	1✔
196	}	1✔
197
198	var strategy *appsv1.DeploymentStrategy	1✔
199	if stack.Spec.StackSpec.Strategy != nil {	2✔
200	strategy = stack.Spec.StackSpec.Strategy.DeepCopy()	1✔
201	}	1✔
202
203	embeddedCopy := stack.Spec.StackSpec.PodTemplate.EmbeddedObjectMeta.DeepCopy()	1✔
204		1✔
205	templateObjectMeta := metav1.ObjectMeta{	1✔
206	Annotations: embeddedCopy.Annotations,	1✔
207	Labels: embeddedCopy.Labels,	1✔
208	}	1✔
209		1✔
210	deployment := &appsv1.Deployment{	1✔
211	ObjectMeta: sc.resourceMeta(),	1✔
212	Spec: appsv1.DeploymentSpec{	1✔
213	Replicas: updatedReplicas,	1✔
214	MinReadySeconds: sc.Stack.Spec.StackSpec.MinReadySeconds,	1✔
215	Selector: &metav1.LabelSelector{	1✔
216	MatchLabels: sc.selector(),	1✔
217	},	1✔
218	Template: v1.PodTemplateSpec{	1✔
219	ObjectMeta: objectMetaInjectLabels(templateObjectMeta, stack.Labels),	1✔
220	Spec: *stack.Spec.StackSpec.PodTemplate.Spec.DeepCopy(),	1✔
221	},	1✔
222	},	1✔
223	}	1✔
224	if strategy != nil {	2✔
225	deployment.Spec.Strategy = *strategy	1✔
226	}	1✔
227	return deployment	1✔
228	}
229
230	func (sc *StackContainer) GenerateHPAToSegment() (
231	*autoscaling.HorizontalPodAutoscaler,
232	error,
233	) {	1✔
234	return sc.generateHPA(true)	1✔
235	}	1✔
236
237	func (sc *StackContainer) GenerateHPA() (
238	*autoscaling.HorizontalPodAutoscaler,
239	error,
240	) {	1✔
241	return sc.generateHPA(false)	1✔
242		1✔
243	}	1✔
244
245	func (sc *StackContainer) generateHPA(toSegment bool) (
246	*autoscaling.HorizontalPodAutoscaler,
247	error,
248	) {	1✔
249	autoscalerSpec := sc.Stack.Spec.StackSpec.Autoscaler	1✔
250	trafficWeight := sc.actualTrafficWeight	1✔
251		1✔
252	if autoscalerSpec == nil {	1✔
UNCOV 253	return nil, nil	×
UNCOV 254	}	×
255
256	result := &autoscaling.HorizontalPodAutoscaler{	1✔
257	ObjectMeta: sc.resourceMeta(),	1✔
258	TypeMeta: metav1.TypeMeta{	1✔
259	Kind: "HorizontalPodAutoscaler",	1✔
260	APIVersion: "autoscaling/v2",	1✔
261	},	1✔
262	Spec: autoscaling.HorizontalPodAutoscalerSpec{	1✔
263	ScaleTargetRef: autoscaling.CrossVersionObjectReference{	1✔
264	APIVersion: apiVersionAppsV1,	1✔
265	Kind: kindDeployment,	1✔
266	Name: sc.Name(),	1✔
267	},	1✔
268	},	1✔
269	}	1✔
270		1✔
271	result.Spec.MinReplicas = autoscalerSpec.MinReplicas	1✔
272	result.Spec.MaxReplicas = autoscalerSpec.MaxReplicas	1✔
273		1✔
274	ingressResourceName := sc.stacksetName	1✔
275	if toSegment {	2✔
276	ingressResourceName = sc.Name() + SegmentSuffix	1✔
277	}	1✔
278
279	metrics, annotations, err := convertCustomMetrics(	1✔
280	ingressResourceName,	1✔
281	sc.Name(),	1✔
282	sc.Namespace(),	1✔
283	autoscalerMetricsList(autoscalerSpec.Metrics),	1✔
284	trafficWeight,	1✔
285	)	1✔
286		1✔
287	if err != nil {	1✔
UNCOV 288	return nil, err	×
UNCOV 289	}	×
290	result.Spec.Metrics = metrics	1✔
291	result.Annotations = mergeLabels(result.Annotations, annotations)	1✔
292	result.Spec.Behavior = autoscalerSpec.Behavior	1✔
293		1✔
294	// If prescaling is enabled, ensure we have at least `precalingReplicas` pods	1✔
295	if sc.prescalingActive && (result.Spec.MinReplicas == nil \|\| *result.Spec.MinReplicas < sc.prescalingReplicas) {	1✔
UNCOV 296	pr := sc.prescalingReplicas	×
UNCOV 297	result.Spec.MinReplicas = &pr	×
298	}	×
299
300	return result, nil	1✔
301	}
302
303	func (sc StackContainer) GenerateService() (v1.Service, error) {	1✔
304	// get service ports to be used for the service	1✔
305	var backendPort *intstr.IntOrString	1✔
306	// Ingress or external managed Ingress	1✔
307	if sc.HasBackendPort() {	1✔
UNCOV 308	backendPort = sc.backendPort	×
UNCOV 309	}	×
310
311	servicePorts, err := getServicePorts(sc.Stack.Spec, backendPort)	1✔
312	if err != nil {	1✔
UNCOV 313	return nil, err	×
UNCOV 314	}	×
315
316	metaObj := sc.resourceMeta()	1✔
317	stackSpec := sc.Stack.Spec	1✔
318	if stackSpec.StackSpec.Service != nil {	2✔
319	metaObj.Annotations = mergeLabels(	1✔
320	metaObj.Annotations,	1✔
321	stackSpec.StackSpec.Service.Annotations,	1✔
322	)	1✔
323	}	1✔
324	return &v1.Service{	1✔
325	ObjectMeta: metaObj,	1✔
326	Spec: v1.ServiceSpec{	1✔
327	Selector: sc.selector(),	1✔
328	Type: v1.ServiceTypeClusterIP,	1✔
329	Ports: servicePorts,	1✔
330	},	1✔
331	}, nil	1✔
332	}
333
334	func (sc *StackContainer) stackHostnames(
335	spec ingressOrRouteGroupSpec,
336	segment bool,
337	) ([]string, error) {	1✔
338	// The Ingress segment uses the original hostnames	1✔
339	if segment {	2✔
340	return spec.GetHosts(), nil	1✔
341	}	1✔
342	result := sets.NewString()	1✔
343		1✔
344	// Old-style autogenerated hostnames	1✔
345	for _, host := range spec.GetHosts() {	2✔
346	for _, domain := range sc.clusterDomains {	2✔
347	if strings.HasSuffix(host, domain) {	2✔
348	result.Insert(fmt.Sprintf("%s.%s", sc.Name(), domain))	1✔
349	} else {	2✔
350	log.Debugf(	1✔
351	"Ingress host: %s suffix did not match cluster-domain %s",	1✔
352	host,	1✔
353	domain,	1✔
354	)	1✔
355	}	1✔
356	}
357	}
358	return result.List(), nil	1✔
359	}
360
361	func (sc StackContainer) GenerateIngress() (networking.Ingress, error) {	1✔
362	return sc.generateIngress(false)	1✔
363	}	1✔
364
365	func (sc *StackContainer) GenerateIngressSegment() (
366	*networking.Ingress,
367	error,
368	) {	1✔
369	res, err := sc.generateIngress(true)	1✔
370	if err != nil \|\| res == nil {	2✔
371	return res, err	1✔
372	}	1✔
373
374	// Synchronize annotations specified in the StackSet.
375	res.Annotations = syncAnnotations(	1✔
376	res.Annotations,	1✔
377	sc.syncAnnotationsInIngress,	1✔
378	sc.ingressAnnotationsToSync,	1✔
379	)	1✔
380		1✔
381	if predVal, ok := res.Annotations[IngressPredicateKey]; !ok \|\| predVal == "" {	2✔
382	res.Annotations = mergeLabels(	1✔
383	res.Annotations,	1✔
384	map[string]string{IngressPredicateKey: sc.trafficSegment()},	1✔
385	)	1✔
386	} else {	2✔
387	res.Annotations = mergeLabels(	1✔
388	res.Annotations,	1✔
389	map[string]string{	1✔
390	IngressPredicateKey: sc.trafficSegment() + " && " + predVal,	1✔
391	},	1✔
392	)	1✔
393	}	1✔
394
395	return res, nil	1✔
396	}
397
398	func (sc *StackContainer) generateIngress(segment bool) (
399	*networking.Ingress,
400	error,
401	) {	1✔
402		1✔
403	if !sc.HasBackendPort() \|\| sc.ingressSpec == nil {	2✔
404	return nil, nil	1✔
405	}	1✔
406
407	hostnames, err := sc.stackHostnames(sc.ingressSpec, segment)	1✔
408	if err != nil {	1✔
UNCOV 409	return nil, err	×
UNCOV 410	}	×
411	if len(hostnames) == 0 {	2✔
412	return nil, nil	1✔
413	}	1✔
414
415	rules := make([]networking.IngressRule, 0, len(hostnames))	1✔
416	for _, hostname := range hostnames {	2✔
417	rules = append(rules, networking.IngressRule{	1✔
418	IngressRuleValue: networking.IngressRuleValue{	1✔
419	HTTP: &networking.HTTPIngressRuleValue{	1✔
420	Paths: []networking.HTTPIngressPath{	1✔
421	{	1✔
422	PathType: &PathTypeImplementationSpecific,	1✔
423	Path: sc.ingressSpec.Path,	1✔
424	Backend: networking.IngressBackend{	1✔
425	Service: &networking.IngressServiceBackend{	1✔
426	Name: sc.Name(),	1✔
427	Port: networking.ServiceBackendPort{	1✔
428	Name: sc.backendPort.StrVal,	1✔
429	Number: sc.backendPort.IntVal,	1✔
430	},	1✔
431	},	1✔
432	},	1✔
433	},	1✔
434	},	1✔
435	},	1✔
436	},	1✔
437	Host: hostname,	1✔
438	})	1✔
439	}	1✔
440
441	// sort rules by hostname for a stable order
442	sort.Slice(rules, func(i, j int) bool {	2✔
443	return rules[i].Host < rules[j].Host	1✔
444	})	1✔
445
446	result := &networking.Ingress{	1✔
447	ObjectMeta: sc.objectMeta(segment),	1✔
448	Spec: networking.IngressSpec{	1✔
449	Rules: rules,	1✔
450	},	1✔
451	}	1✔
452		1✔
453	// insert annotations	1✔
454	result.Annotations = mergeLabels(	1✔
455	result.Annotations,	1✔
456	sc.ingressSpec.GetAnnotations(),	1✔
457	)	1✔
458		1✔
459	return result, nil	1✔
460	}
461
462	func (sc StackContainer) GenerateRouteGroup() (rgv1.RouteGroup, error) {	1✔
463	return sc.generateRouteGroup(false)	1✔
464	}	1✔
465
466	func (sc *StackContainer) GenerateRouteGroupSegment() (
467	*rgv1.RouteGroup,
468	error,
469	) {	1✔
470	res, err := sc.generateRouteGroup(true)	1✔
471	if err != nil \|\| res == nil {	2✔
472	return res, err	1✔
473	}	1✔
474
475	// Synchronize annotations specified in the StackSet.
476	res.Annotations = syncAnnotations(	1✔
477	res.Annotations,	1✔
478	sc.syncAnnotationsInRouteGroup,	1✔
479	sc.ingressAnnotationsToSync,	1✔
480	)	1✔
481		1✔
482	segmentedRoutes := []rgv1.RouteGroupRouteSpec{}	1✔
483	for _, r := range res.Spec.Routes {	2✔
484	r.Predicates = append(r.Predicates, sc.trafficSegment())	1✔
485	segmentedRoutes = append(segmentedRoutes, r)	1✔
486	}	1✔
487	res.Spec.Routes = segmentedRoutes	1✔
488		1✔
489	return res, nil	1✔
490	}
491
492	func (sc *StackContainer) generateRouteGroup(segment bool) (
493	*rgv1.RouteGroup,
494	error,
495	) {	1✔
496	if !sc.HasBackendPort() \|\| sc.routeGroupSpec == nil {	2✔
497	return nil, nil	1✔
498	}	1✔
499
500	hostnames, err := sc.stackHostnames(sc.routeGroupSpec, segment)	1✔
501	if err != nil {	1✔
UNCOV 502	return nil, err	×
UNCOV 503	}	×
504	if len(hostnames) == 0 {	2✔
505	return nil, nil	1✔
506	}	1✔
507
508	result := &rgv1.RouteGroup{	1✔
509	ObjectMeta: sc.objectMeta(segment),	1✔
510	Spec: rgv1.RouteGroupSpec{	1✔
511	Hosts: hostnames,	1✔
512	Backends: []rgv1.RouteGroupBackend{	1✔
513	{	1✔
514	Name: sc.Name(),	1✔
515	Type: rgv1.ServiceRouteGroupBackend,	1✔
516	ServiceName: sc.Name(),	1✔
517	ServicePort: sc.backendPort.IntValue(),	1✔
518	Algorithm: sc.routeGroupSpec.LBAlgorithm,	1✔
519	},	1✔
520	},	1✔
521	DefaultBackends: []rgv1.RouteGroupBackendReference{	1✔
522	{	1✔
523	BackendName: sc.Name(),	1✔
524	Weight: 100,	1✔
525	},	1✔
526	},	1✔
527	},	1✔
528	}	1✔
529		1✔
530	result.Spec.Routes = sc.routeGroupSpec.Routes	1✔
531		1✔
532	// validate not overlapping with main backend	1✔
533	for _, backend := range sc.routeGroupSpec.AdditionalBackends {	1✔
UNCOV 534	if backend.Name == sc.Name() {	×
UNCOV 535	return nil, fmt.Errorf("invalid additionalBackend '%s', overlaps with Stack name", backend.Name)	×
536	}	×
537	if backend.ServiceName == sc.Name() {	×
538	return nil, fmt.Errorf("invalid additionalBackend '%s', serviceName '%s' overlaps with Stack name", backend.Name, backend.ServiceName)	×
539	}	×
540	result.Spec.Backends = append(result.Spec.Backends, backend)	×
541	}
542
543	// sort backends to ensure have a consistent generated RouteGroup resource
544	sort.Slice(result.Spec.Backends, func(i, j int) bool {	1✔
UNCOV 545	return result.Spec.Backends[i].Name < result.Spec.Backends[j].Name	×
UNCOV 546	})	×
547
548	// insert annotations
549	result.Annotations = mergeLabels(	1✔
550	result.Annotations,	1✔
551	sc.routeGroupSpec.GetAnnotations(),	1✔
552	)	1✔
553		1✔
554	return result, nil	1✔
555	}
556
557	func (sc *StackContainer) trafficSegment() string {	1✔
558	return fmt.Sprintf(	1✔
559	segmentString,	1✔
560	sc.segmentLowerLimit,	1✔
561	sc.segmentUpperLimit,	1✔
562	)	1✔
563	}	1✔
564
565	func (sc StackContainer) UpdateObjectMeta(objMeta metav1.ObjectMeta) *metav1.ObjectMeta {	1✔
566	metaObj := sc.resourceMeta()	1✔
567	objMeta.OwnerReferences = metaObj.OwnerReferences	1✔
568	objMeta.Labels = mergeLabels(metaObj.Labels, objMeta.Labels)	1✔
569	objMeta.Annotations = mergeLabels(metaObj.Annotations, objMeta.Annotations)	1✔
570		1✔
571	return objMeta	1✔
572	}	1✔
573
NEW UNCOV 574	func (sc StackContainer) GenerateConfigMaps() ([]v1.ConfigMap, error) {	×
NEW UNCOV 575	result := []*v1.ConfigMap{}	×
NEW UNCOV 576		×
NEW UNCOV 577	for _, configResource := range sc.Stack.Spec.ConfigurationResources {	×
NEW UNCOV 578	if !configResource.IsConfigMap() {	×
NEW UNCOV 579	continue	×
580	}
581
NEW 582	metaObj := sc.resourceMeta()	×
NEW 583	metaObj.Name = metaObj.Name + "-" + configResource.GetName()	×
NEW 584	metaObj.OwnerReferences = []metav1.OwnerReference{	×
NEW 585	{	×
NEW 586	APIVersion: "zalando.org/v1",	×
NEW 587	Kind: "Stack",	×
NEW 588	Name: sc.Name(),	×
NEW 589	UID: sc.Stack.UID,	×
NEW 590	},	×
NEW 591	}	×
NEW 592		×
NEW 593	base := &v1.ConfigMap{	×
NEW 594	ObjectMeta: metaObj,	×
NEW 595	Data: configResource.ConfigMap.Data,	×
NEW 596	}	×
NEW 597		×
NEW 598	result = append(result, base)	×
599	}
600
NEW 601	return result, nil	×
602	}
603
604	func (sc StackContainer) GenerateStackStatus() zv1.StackStatus {	1✔
605	prescaling := zv1.PrescalingStatus{}	1✔
606	if sc.prescalingActive {	2✔
607	prescaling = zv1.PrescalingStatus{	1✔
608	Active: sc.prescalingActive,	1✔
609	Replicas: sc.prescalingReplicas,	1✔
610	DesiredTrafficWeight: sc.prescalingDesiredTrafficWeight,	1✔
611	LastTrafficIncrease: wrapTime(sc.prescalingLastTrafficIncrease),	1✔
612	}	1✔
613	}	1✔
614	return &zv1.StackStatus{	1✔
615	ActualTrafficWeight: sc.actualTrafficWeight,	1✔
616	DesiredTrafficWeight: sc.desiredTrafficWeight,	1✔
617	Replicas: sc.createdReplicas,	1✔
618	ReadyReplicas: sc.readyReplicas,	1✔
619	UpdatedReplicas: sc.updatedReplicas,	1✔
620	DesiredReplicas: sc.deploymentReplicas,	1✔
621	Prescaling: prescaling,	1✔
622	NoTrafficSince: wrapTime(sc.noTrafficSince),	1✔
623	LabelSelector: labels.Set(sc.selector()).String(),	1✔
624	}	1✔
625	}

zalando-incubator / stackset-controller / 8190225339

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