k8s

package
v1.18.0-pre.0 Latest Latest
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 Go to latest Published: Mar 3, 2025 License: Apache-2.0 Imports: 51 Imported by: 0

Documentation

Overview

Package k8s provides various helper functions for interacting with Kubernetes APIs.

IMPORTANT: Please note that the APIs of this package might change without any notice until cilium-cli reaches v1.0.0.

Index

Constants

This section is empty.

Variables

View Source 
var ErrKVStoreMeshStatusNotImplemented = errors.New("kvstoremesh-dbg status is not available")

KVStoreMeshStatusNotImplemented is a sentinel error to signal that the status command is not implemented.

View Source 
var StderrAsError stderrAsError

StderrAsError, when given as stderr parameter of the ExecInPodWithWriters function, causes any stderr message to be returned as an error.

Functions

func NewClusterRoleBinding 

func NewClusterRoleBinding(name, namespace, serviceAccount string) *rbacv1.ClusterRoleBinding

func NewIngressClass 

func NewIngressClass(name, controllerName string) *networkingv1.IngressClass

func NewSecret 

func NewSecret(name, namespace string, data map[string][]byte) *corev1.Secret

func NewServiceAccount 

func NewServiceAccount(name string) *corev1.ServiceAccount

func NewTLSSecret 

func NewTLSSecret(name, namespace string, data map[string][]byte) *corev1.Secret

NewTLSSecret return a Secret of the type kubernetes.io/tls. Note that for this kind of Secret, both tls.key and tls.crt are required in data.

Types

type Client 

type Client struct {
	Clientset          kubernetes.Interface
	ExtensionClientset apiextensionsclientset.Interface // k8s api extension needed to retrieve CRDs
	DynamicClientset   dynamic.Interface
	CiliumClientset    ciliumClientset.Interface
	Config             *rest.Config
	RawConfig          clientcmdapi.Config
	RESTClientGetter   genericclioptions.RESTClientGetter

	HelmActionConfig *action.Configuration
	// contains filtered or unexported fields
}

func NewClient 

func NewClient(contextName, kubeconfig, ciliumNamespace string, impersonateAs string, impersonateGroup []string) (*Client, error)

func (*Client) ApplyGeneric 

func (c *Client) ApplyGeneric(ctx context.Context, obj Object) (*unstructured.Unstructured, error)

ApplyGeneric uses server-side apply to merge changes to an arbitrary object. Returns the applied object.

func (*Client) AutodetectFlavor 

func (c *Client) AutodetectFlavor(ctx context.Context) Flavor

func (*Client) CheckDaemonSetStatus 

func (c *Client) CheckDaemonSetStatus(ctx context.Context, namespace, deployment string) error

func (*Client) CheckDeploymentStatus 

func (c *Client) CheckDeploymentStatus(ctx context.Context, namespace, deployment string) error

func (*Client) CiliumDbgEndpoints 

func (c *Client) CiliumDbgEndpoints(ctx context.Context, namespace, pod string) ([]*models.Endpoint, error)

func (*Client) CiliumStatus 

func (c *Client) CiliumStatus(ctx context.Context, namespace, pod string) (*models.StatusResponse, error)

func (*Client) ClusterName 

func (c *Client) ClusterName() (name string)

ClusterName returns the name of the cluster the client is connected to

func (*Client) ContainerLogs 

func (c *Client) ContainerLogs(ctx context.Context, namespace, pod, containerName string, since time.Time, previous bool) (string, error)

func (*Client) ContextName 

func (c *Client) ContextName() (name string)

ContextName returns the name of the context the client is connected to

func (*Client) CopyFromPod 

func (c *Client) CopyFromPod(ctx context.Context, namespace, pod, container, fromFile, destFile string, retryLimit int) error

CopyFromPod is to copy srcFile in a given pod to local destFile with defaultMaxTries.

func (*Client) CreateConfigMap 

func (c *Client) CreateConfigMap(ctx context.Context, namespace string, config *corev1.ConfigMap, opts metav1.CreateOptions) (*corev1.ConfigMap, error)

func (*Client) CreateDaemonSet 

func (c *Client) CreateDaemonSet(ctx context.Context, namespace string, ds *appsv1.DaemonSet, opts metav1.CreateOptions) (*appsv1.DaemonSet, error)

func (*Client) CreateDeployment 

func (c *Client) CreateDeployment(ctx context.Context, namespace string, deployment *appsv1.Deployment, opts metav1.CreateOptions) (*appsv1.Deployment, error)

func (*Client) CreateEphemeralContainer 

func (c *Client) CreateEphemeralContainer(ctx context.Context, pod *corev1.Pod, ec *corev1.EphemeralContainer) (*corev1.Pod, error)

CreateEphemeralContainer will create a EphemeralContainer (debug container) in the specified pod. EphemeralContainers are special containers which can be added after-the-fact in running pods. They're useful for debugging, either when the target container image doesn't have necessary tools, or because the pod has no running containers due to a crash.

see https://kubernetes.io/docs/concepts/workloads/pods/ephemeral-containers/

EphemeralContainers were added in there current form (behind a feature gate) in 1.22. They are scheduled for GA in v1.25.

func (*Client) CreateIngress 

func (c *Client) CreateIngress(ctx context.Context, namespace string, ingress *networkingv1.Ingress, opts metav1.CreateOptions) (*networkingv1.Ingress, error)

func (*Client) CreateNamespace 

func (c *Client) CreateNamespace(ctx context.Context, namespace *corev1.Namespace, opts metav1.CreateOptions) (*corev1.Namespace, error)

func (*Client) CreatePod 

func (c *Client) CreatePod(ctx context.Context, namespace string, pod *corev1.Pod, opts metav1.CreateOptions) (*corev1.Pod, error)

func (*Client) CreateSecret 

func (c *Client) CreateSecret(ctx context.Context, namespace string, secret *corev1.Secret, opts metav1.CreateOptions) (*corev1.Secret, error)

func (*Client) CreateService 

func (c *Client) CreateService(ctx context.Context, namespace string, service *corev1.Service, opts metav1.CreateOptions) (*corev1.Service, error)

func (*Client) CreateServiceAccount 

func (c *Client) CreateServiceAccount(ctx context.Context, namespace string, account *corev1.ServiceAccount, opts metav1.CreateOptions) (*corev1.ServiceAccount, error)

func (*Client) DeleteCiliumClusterwideNetworkPolicy 

func (c *Client) DeleteCiliumClusterwideNetworkPolicy(ctx context.Context, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteCiliumEgressGatewayPolicy 

func (c *Client) DeleteCiliumEgressGatewayPolicy(ctx context.Context, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteCiliumLocalRedirectPolicy 

func (c *Client) DeleteCiliumLocalRedirectPolicy(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteCiliumNetworkPolicy 

func (c *Client) DeleteCiliumNetworkPolicy(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteConfigMap 

func (c *Client) DeleteConfigMap(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteDeployment 

func (c *Client) DeleteDeployment(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteGeneric 

func (c *Client) DeleteGeneric(ctx context.Context, obj Object) error

func (*Client) DeleteKubernetesNetworkPolicy 

func (c *Client) DeleteKubernetesNetworkPolicy(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteNamespace 

func (c *Client) DeleteNamespace(ctx context.Context, namespace string, opts metav1.DeleteOptions) error

func (*Client) DeletePod 

func (c *Client) DeletePod(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeletePodCollection 

func (c *Client) DeletePodCollection(ctx context.Context, namespace string, opts metav1.DeleteOptions, listOpts metav1.ListOptions) error

func (*Client) DeleteSecret 

func (c *Client) DeleteSecret(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteService 

func (c *Client) DeleteService(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) DeleteServiceAccount 

func (c *Client) DeleteServiceAccount(ctx context.Context, namespace, name string, opts metav1.DeleteOptions) error

func (*Client) Describe 

func (c *Client) Describe(obj runtime.Object) (gvk schema.GroupVersionKind, resource schema.GroupVersionResource, err error)

Describe returns the Kubernetes type and resource information for an object

func (*Client) ExecInPod 

func (c *Client) ExecInPod(ctx context.Context, namespace, pod, container string, command []string) (bytes.Buffer, error)

func (*Client) ExecInPodWithStderr 

func (c *Client) ExecInPodWithStderr(ctx context.Context, namespace, pod, container string, command []string) (bytes.Buffer, bytes.Buffer, error)

func (*Client) ExecInPodWithWriters 

func (c *Client) ExecInPodWithWriters(connCtx, killCmdCtx context.Context, namespace, pod, container string, command []string, stdout, stderr io.Writer) error

func (*Client) GetAPIServerHostAndPort 

func (c *Client) GetAPIServerHostAndPort() (string, string)

func (*Client) GetCRD 

func (c *Client) GetCRD(ctx context.Context, name string, opts metav1.GetOptions) (*apiextensions.CustomResourceDefinition, error)

func (*Client) GetCiliumLocalRedirectPolicy 

func (c *Client) GetCiliumLocalRedirectPolicy(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*ciliumv2.CiliumLocalRedirectPolicy, error)

func (*Client) GetCiliumVersion 

func (c *Client) GetCiliumVersion(ctx context.Context, p *corev1.Pod) (*semver.Version, error)

GetCiliumVersion returns a semver.Version representing the version of cilium running in the cilium-agent pod

func (*Client) GetClusterRole 

func (c *Client) GetClusterRole(ctx context.Context, name string, opts metav1.GetOptions) (*rbacv1.ClusterRole, error)

func (*Client) GetConfigMap 

func (c *Client) GetConfigMap(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*corev1.ConfigMap, error)

func (*Client) GetCronJob 

func (c *Client) GetCronJob(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*batchv1.CronJob, error)

func (*Client) GetDaemonSet 

func (c *Client) GetDaemonSet(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*appsv1.DaemonSet, error)

func (*Client) GetDeployment 

func (c *Client) GetDeployment(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*appsv1.Deployment, error)

func (*Client) GetEndpoints 

func (c *Client) GetEndpoints(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*corev1.Endpoints, error)

func (*Client) GetGeneric 

func (c *Client) GetGeneric(ctx context.Context, namespace, name string, obj Object) (*unstructured.Unstructured, error)

func (*Client) GetHelmMetadata 

func (c *Client) GetHelmMetadata(_ context.Context, releaseName string, namespace string) (string, error)

GetHelmMetadata is the function for cilium cli sysdump to collect the helm metadata from the release directly

func (*Client) GetHelmValues 

func (c *Client) GetHelmValues(_ context.Context, releaseName string, namespace string) (string, error)

GetHelmValues is the function for cilium cli sysdump to collect the helm values from the release directly

func (*Client) GetIngress 

func (c *Client) GetIngress(ctx context.Context, namespace string, name string, opts metav1.GetOptions) (*networkingv1.Ingress, error)

func (*Client) GetLogs 

func (c *Client) GetLogs(ctx context.Context, namespace, name, container string, opts corev1.PodLogOptions, out io.Writer) error

func (*Client) GetNamespace 

func (c *Client) GetNamespace(ctx context.Context, namespace string, options metav1.GetOptions) (*corev1.Namespace, error)

func (*Client) GetNode 

func (c *Client) GetNode(ctx context.Context, name string, opts metav1.GetOptions) (*corev1.Node, error)

func (*Client) GetPod 

func (c *Client) GetPod(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*corev1.Pod, error)

func (*Client) GetPodsTable 

func (c *Client) GetPodsTable(_ context.Context) (*metav1.Table, error)

func (*Client) GetRaw 

func (c *Client) GetRaw(ctx context.Context, path string) (string, error)

func (*Client) GetRunningCiliumVersion 

func (c *Client) GetRunningCiliumVersion(ciliumHelmReleaseName string) (string, error)

func (*Client) GetSecret 

func (c *Client) GetSecret(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*corev1.Secret, error)

func (*Client) GetServerVersion 

func (c *Client) GetServerVersion() (*semver.Version, error)

func (*Client) GetService 

func (c *Client) GetService(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*corev1.Service, error)

func (*Client) GetServiceAccount 

func (c *Client) GetServiceAccount(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*corev1.ServiceAccount, error)

func (*Client) GetStatefulSet 

func (c *Client) GetStatefulSet(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*appsv1.StatefulSet, error)

func (*Client) GetVersion 

func (c *Client) GetVersion(_ context.Context) (string, error)

func (*Client) KVStoreMeshStatus 

func (c *Client) KVStoreMeshStatus(ctx context.Context, namespace, pod string) ([]*models.RemoteCluster, error)

func (*Client) ListCiliumBGPAdvertisements 

func (c *Client) ListCiliumBGPAdvertisements(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumBGPAdvertisementList, error)

func (*Client) ListCiliumBGPClusterConfigs 

func (c *Client) ListCiliumBGPClusterConfigs(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumBGPClusterConfigList, error)

func (*Client) ListCiliumBGPNodeConfigOverrides 

func (c *Client) ListCiliumBGPNodeConfigOverrides(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumBGPNodeConfigOverrideList, error)

func (*Client) ListCiliumBGPNodeConfigs 

func (c *Client) ListCiliumBGPNodeConfigs(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumBGPNodeConfigList, error)

func (*Client) ListCiliumBGPPeerConfigs 

func (c *Client) ListCiliumBGPPeerConfigs(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumBGPPeerConfigList, error)

func (*Client) ListCiliumBGPPeeringPolicies 

func (c *Client) ListCiliumBGPPeeringPolicies(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumBGPPeeringPolicyList, error)

func (*Client) ListCiliumCIDRGroups 

func (c *Client) ListCiliumCIDRGroups(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumCIDRGroupList, error)

func (*Client) ListCiliumClusterwideEnvoyConfigs 

func (c *Client) ListCiliumClusterwideEnvoyConfigs(ctx context.Context, opts metav1.ListOptions) (*ciliumv2.CiliumClusterwideEnvoyConfigList, error)

func (*Client) ListCiliumClusterwideNetworkPolicies 

func (c *Client) ListCiliumClusterwideNetworkPolicies(ctx context.Context, opts metav1.ListOptions) (*ciliumv2.CiliumClusterwideNetworkPolicyList, error)

func (*Client) ListCiliumEgressGatewayPolicies 

func (c *Client) ListCiliumEgressGatewayPolicies(ctx context.Context, opts metav1.ListOptions) (*ciliumv2.CiliumEgressGatewayPolicyList, error)

func (*Client) ListCiliumEndpointSlices 

func (c *Client) ListCiliumEndpointSlices(ctx context.Context, options metav1.ListOptions) (*ciliumv2alpha1.CiliumEndpointSliceList, error)

func (*Client) ListCiliumEndpoints 

func (c *Client) ListCiliumEndpoints(ctx context.Context, namespace string, options metav1.ListOptions) (*ciliumv2.CiliumEndpointList, error)

func (*Client) ListCiliumEnvoyConfigs 

func (c *Client) ListCiliumEnvoyConfigs(ctx context.Context, namespace string, options metav1.ListOptions) (*ciliumv2.CiliumEnvoyConfigList, error)

func (*Client) ListCiliumIdentities 

func (c *Client) ListCiliumIdentities(ctx context.Context) (*ciliumv2.CiliumIdentityList, error)

func (*Client) ListCiliumLoadBalancerIPPools 

func (c *Client) ListCiliumLoadBalancerIPPools(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumLoadBalancerIPPoolList, error)

func (*Client) ListCiliumLocalRedirectPolicies 

func (c *Client) ListCiliumLocalRedirectPolicies(ctx context.Context, namespace string, opts metav1.ListOptions) (*ciliumv2.CiliumLocalRedirectPolicyList, error)

func (*Client) ListCiliumNetworkPolicies 

func (c *Client) ListCiliumNetworkPolicies(ctx context.Context, namespace string, opts metav1.ListOptions) (*ciliumv2.CiliumNetworkPolicyList, error)

func (*Client) ListCiliumNodeConfigs 

func (c *Client) ListCiliumNodeConfigs(ctx context.Context, namespace string, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumNodeConfigList, error)

func (*Client) ListCiliumNodes 

func (c *Client) ListCiliumNodes(ctx context.Context) (*ciliumv2.CiliumNodeList, error)

func (*Client) ListCiliumPodIPPools 

func (c *Client) ListCiliumPodIPPools(ctx context.Context, opts metav1.ListOptions) (*ciliumv2alpha1.CiliumPodIPPoolList, error)

func (*Client) ListDaemonSet 

func (c *Client) ListDaemonSet(ctx context.Context, namespace string, o metav1.ListOptions) (*appsv1.DaemonSetList, error)

func (*Client) ListDeployment 

func (c *Client) ListDeployment(ctx context.Context, namespace string, options metav1.ListOptions) (*appsv1.DeploymentList, error)

func (*Client) ListEndpointSlices 

func (c *Client) ListEndpointSlices(ctx context.Context, o metav1.ListOptions) (*discoveryv1.EndpointSliceList, error)

func (*Client) ListEndpoints 

func (c *Client) ListEndpoints(ctx context.Context, o metav1.ListOptions) (*corev1.EndpointsList, error)

func (*Client) ListEvents 

func (c *Client) ListEvents(ctx context.Context, o metav1.ListOptions) (*corev1.EventList, error)

func (*Client) ListIngressClasses 

func (c *Client) ListIngressClasses(ctx context.Context, o metav1.ListOptions) (*networkingv1.IngressClassList, error)

func (*Client) ListIngresses 

func (c *Client) ListIngresses(ctx context.Context, o metav1.ListOptions) (*networkingv1.IngressList, error)

func (*Client) ListNamespaces 

func (c *Client) ListNamespaces(ctx context.Context, o metav1.ListOptions) (*corev1.NamespaceList, error)

func (*Client) ListNetworkPolicies 

func (c *Client) ListNetworkPolicies(ctx context.Context, o metav1.ListOptions) (*networkingv1.NetworkPolicyList, error)

func (*Client) ListNodes 

func (c *Client) ListNodes(ctx context.Context, options metav1.ListOptions) (*corev1.NodeList, error)

func (*Client) ListPods 

func (c *Client) ListPods(ctx context.Context, namespace string, options metav1.ListOptions) (*corev1.PodList, error)

func (*Client) ListServices 

func (c *Client) ListServices(ctx context.Context, namespace string, options metav1.ListOptions) (*corev1.ServiceList, error)

func (*Client) ListUnstructured 

func (c *Client) ListUnstructured(ctx context.Context, gvr schema.GroupVersionResource, namespace *string, o metav1.ListOptions) (*unstructured.UnstructuredList, error)

func (*Client) PatchConfigMap 

func (c *Client) PatchConfigMap(ctx context.Context, namespace, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions) (*corev1.ConfigMap, error)

func (*Client) PatchDaemonSet 

func (c *Client) PatchDaemonSet(ctx context.Context, namespace, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions) (*appsv1.DaemonSet, error)

func (*Client) PatchNode 

func (c *Client) PatchNode(ctx context.Context, nodeName string, pt types.PatchType, data []byte) (*corev1.Node, error)

func (*Client) PatchSecret 

func (c *Client) PatchSecret(ctx context.Context, namespace, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions) (*corev1.Secret, error)

func (*Client) PodLogs 

func (c *Client) PodLogs(namespace, name string, opts *corev1.PodLogOptions) *rest.Request

func (*Client) PortForward 

func (c *Client) PortForward(ctx context.Context, p k8s.PortForwardParameters) (*k8s.PortForwardResult, error)

PortForward executes in a goroutine a port forward command. To stop the port-forwarding, use the context by cancelling it

func (*Client) PortForwardService 

func (c *Client) PortForwardService(ctx context.Context, namespace, name string, localPort, svcPort int32) (*k8s.PortForwardServiceResult, error)

PortForwardService executes in a goroutine a port forward command towards one of the pod behind a service. If `localPort` is 0, a random port is selected. If `svcPort` is 0, uses the first port configured on the service.

To stop the port-forwarding, use the context by cancelling it.

func (*Client) ProxyGet 

func (c *Client) ProxyGet(ctx context.Context, namespace, name, url string) (string, error)

func (*Client) ProxyTCP 

func (c *Client) ProxyTCP(ctx context.Context, namespace, name string, port uint16, handler func(io.ReadWriteCloser) error) error

func (*Client) UpdateSecret 

func (c *Client) UpdateSecret(ctx context.Context, namespace string, secret *corev1.Secret, opts metav1.UpdateOptions) (*corev1.Secret, error)

type CopyOptions 

type CopyOptions struct {
	// Maximum number of retries, -1 for unlimited retries.
	MaxTries int

	// ReaderFunc is the actual implementation for reading file content
	ReadFunc ReadFunc
}

CopyOptions have the data required to perform the copy operation

type CopyPipe 

type CopyPipe struct {
	Options *CopyOptions

	Reader *io.PipeReader
	Writer *io.PipeWriter
	// contains filtered or unexported fields
}

CopyPipe struct is simple implementation to support copy files with retry.

func (*CopyPipe) Read 

func (t *CopyPipe) Read(p []byte) (int, error)

Read function is to satisfy io.Reader interface. This is simple implementation to support resuming copy in case of there is any temporary issue (e.g. networking)

type ExecParameters 

type ExecParameters struct {
	Namespace string
	Pod       string
	Container string
	Command   []string
	TTY       bool // fuses stderr into stdout if 'true', needed for Ctrl-C support
}

type Flavor 

type Flavor struct {
	ClusterName string
	Kind        Kind
}

type Kind 

type Kind int
const (
	KindUnknown Kind = iota
	KindMinikube
	KindKind
	KindEKS
	KindGKE
	KindAKS
	KindMicrok8s
	KindRancherDesktop
	KindK3s
)

func (Kind) String 

func (k Kind) String() string

type Object 

type Object interface {
	metav1.Object
	runtime.Object
}

type Platform 

type Platform struct {
	OS   string
	Arch string
}

type ReadFunc 

type ReadFunc func(offset uint64, writer io.Writer) error

ReadFunc function is to support reading content from given offset till EOF. The content will be written to io.Writer.

type ResourceClient 

type ResourceClient[T any] interface {
	Create(ctx context.Context, r *T, opts metav1.CreateOptions) (*T, error)
	Update(ctx context.Context, r *T, opts metav1.UpdateOptions) (*T, error)
	Delete(ctx context.Context, name string, opts metav1.DeleteOptions) error
	Get(ctx context.Context, name string, opts metav1.GetOptions) (*T, error)
}

ResourceClient is a common client interface for typed k8s resource clients.

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