8649011694

Committed 11 Apr 2024 03:04PM UTC coverage: 49.355% (-1.0%) from 50.373%

Build # 8649011694

Build Type

Pull #593

github

Committed by

linki

Commit Message

some labels

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

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87.26

/pkg/core/stack_resources.go

package core

import (
        "context"
        "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"
        "github.com/zalando-incubator/stackset-controller/pkg/clientset"
        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) GenerateHPA() (
        *autoscaling.HorizontalPodAutoscaler,
        error,
) {
        autoscalerSpec := sc.Stack.Spec.StackSpec.Autoscaler
        trafficWeight := sc.actualTrafficWeight

        if autoscalerSpec == nil {
                return nil, nil
        }

        if sc.ScaledDown() {
                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

        metrics, annotations, err := convertCustomMetrics(
                sc.Name()+SegmentSuffix,
                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(ctx context.Context, client clientset.Interface) ([]*v1.ConfigMap, error) {
        result := []*v1.ConfigMap{}

        for _, configResource := range sc.Stack.Spec.ConfigurationResources {
                if configResource.IsConfigMap() {
                        metaObj := sc.resourceMeta()
                        metaObj.Name = metaObj.Name + "-" + configResource.GetName()
                        metaObj.OwnerReferences = []metav1.OwnerReference{ // maybe that should be metaObj.OwnerReferences instead
                                {
                                        APIVersion: APIVersion,
                                        Kind:       KindStack,
                                        Name:       sc.Name(),
                                        UID:        sc.Stack.UID,
                                },
                        }

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

                        result = append(result, base)
                }

                if configResource.IsConfigMapRef() {
                        configMap, err := client.CoreV1().ConfigMaps(sc.Namespace()).Get(ctx, configResource.GetName(), metav1.GetOptions{})
                        if err != nil {
                                return nil, err
                        }

                        metaObj := sc.resourceMeta()

                        configMap.ObjectMeta.OwnerReferences = metaObj.OwnerReferences
                        configMap.ObjectMeta.Labels = mergeLabels(metaObj.Labels, configMap.ObjectMeta.Labels)
                        configMap.ObjectMeta.Annotations = mergeLabels(metaObj.Annotations, configMap.ObjectMeta.Annotations)

                        result = append(result, configMap)
                }
        }

        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	"context"
5	"fmt"
6	"sort"
7	"strconv"
8	"strings"
9
10	log "github.com/sirupsen/logrus"
11	rgv1 "github.com/szuecs/routegroup-client/apis/zalando.org/v1"
12	zv1 "github.com/zalando-incubator/stackset-controller/pkg/apis/zalando.org/v1"
13	"github.com/zalando-incubator/stackset-controller/pkg/clientset"
14	appsv1 "k8s.io/api/apps/v1"
15	autoscaling "k8s.io/api/autoscaling/v2"
16	v1 "k8s.io/api/core/v1"
17	networking "k8s.io/api/networking/v1"
18	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
19	"k8s.io/apimachinery/pkg/labels"
20	"k8s.io/apimachinery/pkg/util/intstr"
21	"k8s.io/apimachinery/pkg/util/sets"
22	)
23
24	const (
25	apiVersionAppsV1 = "apps/v1"
26	kindDeployment = "Deployment"
27
28	SegmentSuffix = "-traffic-segment"
29	IngressPredicateKey = "zalando.org/skipper-predicate"
30	)
31
32	type ingressOrRouteGroupSpec interface {
33	GetAnnotations() map[string]string
34	GetHosts() []string
35	}
36
37	var (
38	// set implementation with 0 Byte value
39	selectorLabels = map[string]struct{}{
40	StacksetHeritageLabelKey: {},
41	StackVersionLabelKey: {},
42	}
43
44	// PathTypeImplementationSpecific is the used implementation path type
45	// for k8s.io/api/networking/v1.HTTPIngressPath resources.
46	PathTypeImplementationSpecific = networking.PathTypeImplementationSpecific
47	)
48
49	func mapCopy(m map[string]string) map[string]string {	1✔
50	newMap := map[string]string{}	1✔
51	for k, v := range m {	2✔
52	newMap[k] = v	1✔
53	}	1✔
54	return newMap	1✔
55	}
56
57	// limitLabels returns a limited set of labels based on the validKeys.
58	func limitLabels(labels map[string]string, validKeys map[string]struct{}) map[string]string {	1✔
59	newLabels := make(map[string]string, len(labels))	1✔
60	for k, v := range labels {	2✔
61	if _, ok := validKeys[k]; ok {	2✔
62	newLabels[k] = v	1✔
63	}	1✔
64	}
65	return newLabels	1✔
66	}
67
68	// templateObjectMetaInjectLabels injects labels into a pod template spec.
69	func objectMetaInjectLabels(objectMeta metav1.ObjectMeta, labels map[string]string) metav1.ObjectMeta {	1✔
70	if objectMeta.Labels == nil {	2✔
71	objectMeta.Labels = map[string]string{}	1✔
72	}	1✔
73	for key, value := range labels {	2✔
74	if _, ok := objectMeta.Labels[key]; !ok {	2✔
75	objectMeta.Labels[key] = value	1✔
76	}	1✔
77	}
78	return objectMeta	1✔
79	}
80
81	func (sc *StackContainer) objectMeta(segment bool) metav1.ObjectMeta {	1✔
82	resourceLabels := mapCopy(sc.Stack.Labels)	1✔
83		1✔
84	name := sc.Name()	1✔
85	if segment {	2✔
86	name += SegmentSuffix	1✔
87	}	1✔
88
89	return metav1.ObjectMeta{	1✔
90	Name: name,	1✔
91	Namespace: sc.Namespace(),	1✔
92	Annotations: map[string]string{	1✔
93	stackGenerationAnnotationKey: strconv.FormatInt(sc.Stack.Generation, 10),	1✔
94	},	1✔
95	Labels: resourceLabels,	1✔
96	OwnerReferences: []metav1.OwnerReference{	1✔
97	{	1✔
98	APIVersion: APIVersion,	1✔
99	Kind: KindStack,	1✔
100	Name: sc.Name(),	1✔
101	UID: sc.Stack.UID,	1✔
102	},	1✔
103	},	1✔
104	}	1✔
105	}
106
107	func (sc *StackContainer) resourceMeta() metav1.ObjectMeta {	1✔
108	return sc.objectMeta(false)	1✔
109	}	1✔
110
111	// getServicePorts gets the service ports to be used for the stack service.
112	func getServicePorts(stackSpec zv1.StackSpecInternal, backendPort *intstr.IntOrString) ([]v1.ServicePort, error) {	1✔
113	var servicePorts []v1.ServicePort	1✔
114	if stackSpec.StackSpec.Service == nil \|\|	1✔
115	len(stackSpec.StackSpec.Service.Ports) == 0 {	2✔
116		1✔
117	servicePorts = servicePortsFromContainers(	1✔
118	stackSpec.StackSpec.PodTemplate.Spec.Containers,	1✔
119	)	1✔
120	} else {	2✔
121	servicePorts = stackSpec.StackSpec.Service.Ports	1✔
122	}	1✔
123
124	// validate that one port in the list maps to the backendPort.
125	if backendPort != nil {	2✔
126	for _, port := range servicePorts {	2✔
127	switch backendPort.Type {	1✔
128	case intstr.Int:	1✔
129	if port.Port == backendPort.IntVal {	2✔
130	return servicePorts, nil	1✔
131	}	1✔
132	case intstr.String:	1✔
133	if port.Name == backendPort.StrVal {	2✔
134	return servicePorts, nil	1✔
135	}	1✔
136	}
137	}
138
139	return nil, fmt.Errorf("no service ports matching backendPort '%s'", backendPort.String())	1✔
140	}
141
142	return servicePorts, nil	1✔
143	}
144
145	// servicePortsFromTemplate gets service port from pod template.
146	func servicePortsFromContainers(containers []v1.Container) []v1.ServicePort {	1✔
147	ports := make([]v1.ServicePort, 0)	1✔
148	for i, container := range containers {	2✔
149	for j, port := range container.Ports {	2✔
150	name := fmt.Sprintf("port-%d-%d", i, j)	1✔
151	if port.Name != "" {	2✔
152	name = port.Name	1✔
153	}	1✔
154	servicePort := v1.ServicePort{	1✔
155	Name: name,	1✔
156	Protocol: port.Protocol,	1✔
157	Port: port.ContainerPort,	1✔
158	TargetPort: intstr.FromInt(int(port.ContainerPort)),	1✔
159	}	1✔
160	// set default protocol if not specified	1✔
161	if servicePort.Protocol == "" {	2✔
162	servicePort.Protocol = v1.ProtocolTCP	1✔
163	}	1✔
164	ports = append(ports, servicePort)	1✔
165	}
166	}
167	return ports	1✔
168	}
169
170	func (sc *StackContainer) selector() map[string]string {	1✔
171	return limitLabels(sc.Stack.Labels, selectorLabels)	1✔
172	}	1✔
173
174	func (sc StackContainer) GenerateDeployment() appsv1.Deployment {	1✔
175	stack := sc.Stack	1✔
176		1✔
177	desiredReplicas := sc.stackReplicas	1✔
178	if sc.prescalingActive {	2✔
179	desiredReplicas = sc.prescalingReplicas	1✔
180	}	1✔
181
182	var updatedReplicas *int32	1✔
183		1✔
184	if desiredReplicas != 0 && !sc.ScaledDown() {	2✔
185	// Stack scaled up, rescale the deployment if it's at 0 replicas, or if HPA is unused and we don't run autoscaling	1✔
186	if sc.deploymentReplicas == 0 \|\| (!sc.IsAutoscaled() && desiredReplicas != sc.deploymentReplicas) {	2✔
187	updatedReplicas = wrapReplicas(desiredReplicas)	1✔
188	}	1✔
189	} else {	1✔
190	// Stack scaled down (manually or because it doesn't receive traffic), check if we need to scale down the deployment	1✔
191	if sc.deploymentReplicas != 0 {	2✔
192	updatedReplicas = wrapReplicas(0)	1✔
193	}	1✔
194	}
195
196	if updatedReplicas == nil {	2✔
197	updatedReplicas = wrapReplicas(sc.deploymentReplicas)	1✔
198	}	1✔
199
200	var strategy *appsv1.DeploymentStrategy	1✔
201	if stack.Spec.StackSpec.Strategy != nil {	2✔
202	strategy = stack.Spec.StackSpec.Strategy.DeepCopy()	1✔
203	}	1✔
204
205	embeddedCopy := stack.Spec.StackSpec.PodTemplate.EmbeddedObjectMeta.DeepCopy()	1✔
206		1✔
207	templateObjectMeta := metav1.ObjectMeta{	1✔
208	Annotations: embeddedCopy.Annotations,	1✔
209	Labels: embeddedCopy.Labels,	1✔
210	}	1✔
211		1✔
212	deployment := &appsv1.Deployment{	1✔
213	ObjectMeta: sc.resourceMeta(),	1✔
214	Spec: appsv1.DeploymentSpec{	1✔
215	Replicas: updatedReplicas,	1✔
216	MinReadySeconds: sc.Stack.Spec.StackSpec.MinReadySeconds,	1✔
217	Selector: &metav1.LabelSelector{	1✔
218	MatchLabels: sc.selector(),	1✔
219	},	1✔
220	Template: v1.PodTemplateSpec{	1✔
221	ObjectMeta: objectMetaInjectLabels(templateObjectMeta, stack.Labels),	1✔
222	Spec: *stack.Spec.StackSpec.PodTemplate.Spec.DeepCopy(),	1✔
223	},	1✔
224	},	1✔
225	}	1✔
226	if strategy != nil {	2✔
227	deployment.Spec.Strategy = *strategy	1✔
228	}	1✔
229	return deployment	1✔
230	}
231
232	func (sc *StackContainer) GenerateHPA() (
233	*autoscaling.HorizontalPodAutoscaler,
234	error,
235	) {	1✔
236	autoscalerSpec := sc.Stack.Spec.StackSpec.Autoscaler	1✔
237	trafficWeight := sc.actualTrafficWeight	1✔
238		1✔
239	if autoscalerSpec == nil {	1✔
240	return nil, nil	×
241	}	×
242
243	if sc.ScaledDown() {	2✔
244	return nil, nil	1✔
245	}	1✔
246
247	result := &autoscaling.HorizontalPodAutoscaler{	1✔
248	ObjectMeta: sc.resourceMeta(),	1✔
249	TypeMeta: metav1.TypeMeta{	1✔
250	Kind: "HorizontalPodAutoscaler",	1✔
251	APIVersion: "autoscaling/v2",	1✔
252	},	1✔
253	Spec: autoscaling.HorizontalPodAutoscalerSpec{	1✔
254	ScaleTargetRef: autoscaling.CrossVersionObjectReference{	1✔
255	APIVersion: apiVersionAppsV1,	1✔
256	Kind: kindDeployment,	1✔
257	Name: sc.Name(),	1✔
258	},	1✔
259	},	1✔
260	}	1✔
261		1✔
262	result.Spec.MinReplicas = autoscalerSpec.MinReplicas	1✔
263	result.Spec.MaxReplicas = autoscalerSpec.MaxReplicas	1✔
264		1✔
265	metrics, annotations, err := convertCustomMetrics(	1✔
266	sc.Name()+SegmentSuffix,	1✔
267	sc.Name(),	1✔
268	sc.Namespace(),	1✔
269	autoscalerMetricsList(autoscalerSpec.Metrics),	1✔
270	trafficWeight,	1✔
271	)	1✔
272		1✔
273	if err != nil {	1✔
274	return nil, err	×
275	}	×
276	result.Spec.Metrics = metrics	1✔
277	result.Annotations = mergeLabels(result.Annotations, annotations)	1✔
278	result.Spec.Behavior = autoscalerSpec.Behavior	1✔
279		1✔
280	// If prescaling is enabled, ensure we have at least `precalingReplicas` pods	1✔
281	if sc.prescalingActive && (result.Spec.MinReplicas == nil \|\| *result.Spec.MinReplicas < sc.prescalingReplicas) {	1✔
282	pr := sc.prescalingReplicas	×
283	result.Spec.MinReplicas = &pr	×
284	}	×
285
286	return result, nil	1✔
287	}
288
289	func (sc StackContainer) GenerateService() (v1.Service, error) {	1✔
290	// get service ports to be used for the service	1✔
291	var backendPort *intstr.IntOrString	1✔
292	// Ingress or external managed Ingress	1✔
293	if sc.HasBackendPort() {	1✔
294	backendPort = sc.backendPort	×
295	}	×
296
297	servicePorts, err := getServicePorts(sc.Stack.Spec, backendPort)	1✔
298	if err != nil {	1✔
299	return nil, err	×
300	}	×
301
302	metaObj := sc.resourceMeta()	1✔
303	stackSpec := sc.Stack.Spec	1✔
304	if stackSpec.StackSpec.Service != nil {	2✔
305	metaObj.Annotations = mergeLabels(	1✔
306	metaObj.Annotations,	1✔
307	stackSpec.StackSpec.Service.Annotations,	1✔
308	)	1✔
309	}	1✔
310	return &v1.Service{	1✔
311	ObjectMeta: metaObj,	1✔
312	Spec: v1.ServiceSpec{	1✔
313	Selector: sc.selector(),	1✔
314	Type: v1.ServiceTypeClusterIP,	1✔
315	Ports: servicePorts,	1✔
316	},	1✔
317	}, nil	1✔
318	}
319
320	func (sc *StackContainer) stackHostnames(
321	spec ingressOrRouteGroupSpec,
322	segment bool,
323	) ([]string, error) {	1✔
324	// The Ingress segment uses the original hostnames	1✔
325	if segment {	2✔
326	return spec.GetHosts(), nil	1✔
327	}	1✔
328	result := sets.NewString()	1✔
329		1✔
330	// Old-style autogenerated hostnames	1✔
331	for _, host := range spec.GetHosts() {	2✔
332	for _, domain := range sc.clusterDomains {	2✔
333	if strings.HasSuffix(host, domain) {	2✔
334	result.Insert(fmt.Sprintf("%s.%s", sc.Name(), domain))	1✔
335	} else {	2✔
336	log.Debugf(	1✔
337	"Ingress host: %s suffix did not match cluster-domain %s",	1✔
338	host,	1✔
339	domain,	1✔
340	)	1✔
341	}	1✔
342	}
343	}
344	return result.List(), nil	1✔
345	}
346
347	func (sc StackContainer) GenerateIngress() (networking.Ingress, error) {	1✔
348	return sc.generateIngress(false)	1✔
349	}	1✔
350
351	func (sc *StackContainer) GenerateIngressSegment() (
352	*networking.Ingress,
353	error,
354	) {	1✔
355	res, err := sc.generateIngress(true)	1✔
356	if err != nil \|\| res == nil {	2✔
357	return res, err	1✔
358	}	1✔
359
360	// Synchronize annotations specified in the StackSet.
361	res.Annotations = syncAnnotations(	1✔
362	res.Annotations,	1✔
363	sc.syncAnnotationsInIngress,	1✔
364	sc.ingressAnnotationsToSync,	1✔
365	)	1✔
366		1✔
367	if predVal, ok := res.Annotations[IngressPredicateKey]; !ok \|\| predVal == "" {	2✔
368	res.Annotations = mergeLabels(	1✔
369	res.Annotations,	1✔
370	map[string]string{IngressPredicateKey: sc.trafficSegment()},	1✔
371	)	1✔
372	} else {	2✔
373	res.Annotations = mergeLabels(	1✔
374	res.Annotations,	1✔
375	map[string]string{	1✔
376	IngressPredicateKey: sc.trafficSegment() + " && " + predVal,	1✔
377	},	1✔
378	)	1✔
379	}	1✔
380
381	return res, nil	1✔
382	}
383
384	func (sc *StackContainer) generateIngress(segment bool) (
385	*networking.Ingress,
386	error,
387	) {	1✔
388		1✔
389	if !sc.HasBackendPort() \|\| sc.ingressSpec == nil {	2✔
390	return nil, nil	1✔
391	}	1✔
392
393	hostnames, err := sc.stackHostnames(sc.ingressSpec, segment)	1✔
394	if err != nil {	1✔
395	return nil, err	×
396	}	×
397	if len(hostnames) == 0 {	2✔
398	return nil, nil	1✔
399	}	1✔
400
401	rules := make([]networking.IngressRule, 0, len(hostnames))	1✔
402	for _, hostname := range hostnames {	2✔
403	rules = append(rules, networking.IngressRule{	1✔
404	IngressRuleValue: networking.IngressRuleValue{	1✔
405	HTTP: &networking.HTTPIngressRuleValue{	1✔
406	Paths: []networking.HTTPIngressPath{	1✔
407	{	1✔
408	PathType: &PathTypeImplementationSpecific,	1✔
409	Path: sc.ingressSpec.Path,	1✔
410	Backend: networking.IngressBackend{	1✔
411	Service: &networking.IngressServiceBackend{	1✔
412	Name: sc.Name(),	1✔
413	Port: networking.ServiceBackendPort{	1✔
414	Name: sc.backendPort.StrVal,	1✔
415	Number: sc.backendPort.IntVal,	1✔
416	},	1✔
417	},	1✔
418	},	1✔
419	},	1✔
420	},	1✔
421	},	1✔
422	},	1✔
423	Host: hostname,	1✔
424	})	1✔
425	}	1✔
426
427	// sort rules by hostname for a stable order
428	sort.Slice(rules, func(i, j int) bool {	2✔
429	return rules[i].Host < rules[j].Host	1✔
430	})	1✔
431
432	result := &networking.Ingress{	1✔
433	ObjectMeta: sc.objectMeta(segment),	1✔
434	Spec: networking.IngressSpec{	1✔
435	Rules: rules,	1✔
436	},	1✔
437	}	1✔
438		1✔
439	// insert annotations	1✔
440	result.Annotations = mergeLabels(	1✔
441	result.Annotations,	1✔
442	sc.ingressSpec.GetAnnotations(),	1✔
443	)	1✔
444		1✔
445	return result, nil	1✔
446	}
447
448	func (sc StackContainer) GenerateRouteGroup() (rgv1.RouteGroup, error) {	1✔
449	return sc.generateRouteGroup(false)	1✔
450	}	1✔
451
452	func (sc *StackContainer) GenerateRouteGroupSegment() (
453	*rgv1.RouteGroup,
454	error,
455	) {	1✔
456	res, err := sc.generateRouteGroup(true)	1✔
457	if err != nil \|\| res == nil {	2✔
458	return res, err	1✔
459	}	1✔
460
461	// Synchronize annotations specified in the StackSet.
462	res.Annotations = syncAnnotations(	1✔
463	res.Annotations,	1✔
464	sc.syncAnnotationsInRouteGroup,	1✔
465	sc.ingressAnnotationsToSync,	1✔
466	)	1✔
467		1✔
468	segmentedRoutes := []rgv1.RouteGroupRouteSpec{}	1✔
469	for _, r := range res.Spec.Routes {	2✔
470	r.Predicates = append(r.Predicates, sc.trafficSegment())	1✔
471	segmentedRoutes = append(segmentedRoutes, r)	1✔
472	}	1✔
473	res.Spec.Routes = segmentedRoutes	1✔
474		1✔
475	return res, nil	1✔
476	}
477
478	func (sc *StackContainer) generateRouteGroup(segment bool) (
479	*rgv1.RouteGroup,
480	error,
481	) {	1✔
482	if !sc.HasBackendPort() \|\| sc.routeGroupSpec == nil {	2✔
483	return nil, nil	1✔
484	}	1✔
485
486	hostnames, err := sc.stackHostnames(sc.routeGroupSpec, segment)	1✔
487	if err != nil {	1✔
488	return nil, err	×
489	}	×
490	if len(hostnames) == 0 {	2✔
491	return nil, nil	1✔
492	}	1✔
493
494	result := &rgv1.RouteGroup{	1✔
495	ObjectMeta: sc.objectMeta(segment),	1✔
496	Spec: rgv1.RouteGroupSpec{	1✔
497	Hosts: hostnames,	1✔
498	Backends: []rgv1.RouteGroupBackend{	1✔
499	{	1✔
500	Name: sc.Name(),	1✔
501	Type: rgv1.ServiceRouteGroupBackend,	1✔
502	ServiceName: sc.Name(),	1✔
503	ServicePort: sc.backendPort.IntValue(),	1✔
504	Algorithm: sc.routeGroupSpec.LBAlgorithm,	1✔
505	},	1✔
506	},	1✔
507	DefaultBackends: []rgv1.RouteGroupBackendReference{	1✔
508	{	1✔
509	BackendName: sc.Name(),	1✔
510	Weight: 100,	1✔
511	},	1✔
512	},	1✔
513	},	1✔
514	}	1✔
515		1✔
516	result.Spec.Routes = sc.routeGroupSpec.Routes	1✔
517		1✔
518	// validate not overlapping with main backend	1✔
519	for _, backend := range sc.routeGroupSpec.AdditionalBackends {	1✔
520	if backend.Name == sc.Name() {	×
521	return nil, fmt.Errorf("invalid additionalBackend '%s', overlaps with Stack name", backend.Name)	×
522	}	×
523	if backend.ServiceName == sc.Name() {	×
524	return nil, fmt.Errorf("invalid additionalBackend '%s', serviceName '%s' overlaps with Stack name", backend.Name, backend.ServiceName)	×
525	}	×
526	result.Spec.Backends = append(result.Spec.Backends, backend)	×
527	}
528
529	// sort backends to ensure have a consistent generated RouteGroup resource
530	sort.Slice(result.Spec.Backends, func(i, j int) bool {	1✔
531	return result.Spec.Backends[i].Name < result.Spec.Backends[j].Name	×
532	})	×
533
534	// insert annotations
535	result.Annotations = mergeLabels(	1✔
536	result.Annotations,	1✔
537	sc.routeGroupSpec.GetAnnotations(),	1✔
538	)	1✔
539		1✔
540	return result, nil	1✔
541	}
542
543	func (sc *StackContainer) trafficSegment() string {	1✔
544	return fmt.Sprintf(	1✔
545	segmentString,	1✔
546	sc.segmentLowerLimit,	1✔
547	sc.segmentUpperLimit,	1✔
548	)	1✔
549	}	1✔
550
551	func (sc StackContainer) UpdateObjectMeta(objMeta metav1.ObjectMeta) *metav1.ObjectMeta {	1✔
552	metaObj := sc.resourceMeta()	1✔
553	objMeta.OwnerReferences = metaObj.OwnerReferences	1✔
554	objMeta.Labels = mergeLabels(metaObj.Labels, objMeta.Labels)	1✔
555	objMeta.Annotations = mergeLabels(metaObj.Annotations, objMeta.Annotations)	1✔
556		1✔
557	return objMeta	1✔
558	}	1✔
559
NEW 560	func (sc StackContainer) GenerateConfigMaps(ctx context.Context, client clientset.Interface) ([]v1.ConfigMap, error) {	×
NEW 561	result := []*v1.ConfigMap{}	×
NEW 562		×
NEW 563	for _, configResource := range sc.Stack.Spec.ConfigurationResources {	×
NEW 564	if configResource.IsConfigMap() {	×
NEW 565	metaObj := sc.resourceMeta()	×
NEW 566	metaObj.Name = metaObj.Name + "-" + configResource.GetName()	×
NEW 567	metaObj.OwnerReferences = []metav1.OwnerReference{ // maybe that should be metaObj.OwnerReferences instead	×
NEW 568	{	×
NEW 569	APIVersion: APIVersion,	×
NEW 570	Kind: KindStack,	×
NEW 571	Name: sc.Name(),	×
NEW 572	UID: sc.Stack.UID,	×
NEW 573	},	×
NEW 574	}	×
NEW 575		×
NEW 576	base := &v1.ConfigMap{	×
NEW 577	ObjectMeta: metaObj,	×
NEW 578	Data: configResource.ConfigMap.Data,	×
NEW 579	}	×
NEW 580		×
NEW 581	result = append(result, base)	×
NEW 582	}	×
583
NEW 584	if configResource.IsConfigMapRef() {	×
NEW 585	configMap, err := client.CoreV1().ConfigMaps(sc.Namespace()).Get(ctx, configResource.GetName(), metav1.GetOptions{})	×
NEW 586	if err != nil {	×
NEW 587	return nil, err	×
NEW 588	}	×
589
NEW 590	metaObj := sc.resourceMeta()	×
NEW 591		×
NEW 592	configMap.ObjectMeta.OwnerReferences = metaObj.OwnerReferences	×
NEW 593	configMap.ObjectMeta.Labels = mergeLabels(metaObj.Labels, configMap.ObjectMeta.Labels)	×
NEW 594	configMap.ObjectMeta.Annotations = mergeLabels(metaObj.Annotations, configMap.ObjectMeta.Annotations)	×
NEW 595		×
NEW 596	result = append(result, configMap)	×
597	}
598	}
599
NEW 600	return result, nil	×
601	}
602
603	func (sc StackContainer) GenerateStackStatus() zv1.StackStatus {	1✔
604	prescaling := zv1.PrescalingStatus{}	1✔
605	if sc.prescalingActive {	2✔
606	prescaling = zv1.PrescalingStatus{	1✔
607	Active: sc.prescalingActive,	1✔
608	Replicas: sc.prescalingReplicas,	1✔
609	DesiredTrafficWeight: sc.prescalingDesiredTrafficWeight,	1✔
610	LastTrafficIncrease: wrapTime(sc.prescalingLastTrafficIncrease),	1✔
611	}	1✔
612	}	1✔
613	return &zv1.StackStatus{	1✔
614	ActualTrafficWeight: sc.actualTrafficWeight,	1✔
615	DesiredTrafficWeight: sc.desiredTrafficWeight,	1✔
616	Replicas: sc.createdReplicas,	1✔
617	ReadyReplicas: sc.readyReplicas,	1✔
618	UpdatedReplicas: sc.updatedReplicas,	1✔
619	DesiredReplicas: sc.deploymentReplicas,	1✔
620	Prescaling: prescaling,	1✔
621	NoTrafficSince: wrapTime(sc.noTrafficSince),	1✔
622	LabelSelector: labels.Set(sc.selector()).String(),	1✔
623	}	1✔
624	}

zalando-incubator / stackset-controller / 8649011694

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