k8s

package
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 Go to latest Published: Sep 19, 2023 License: MIT Imports: 44 Imported by: 1

Documentation

Overview

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Copyright (C) 2021-2023, Kubefirst

This program is licensed under MIT. See the LICENSE file for more details.

Index

Constants

This section is empty.

Variables

View Source 
var GitlabSecretClient coreV1Types.SecretInterface

Functions

func CheckForExistingPortForwards 

func CheckForExistingPortForwards(ports ...int) error

CheckForExistingPortForwards determines whether or not port forwards are already running

func CreateSecretV2 

func CreateSecretV2(clientset *kubernetes.Clientset, secret *v1.Secret) error

CreateSecretV2 creates a Kubernetes Secret

func GetClientConfig 

func GetClientConfig(kubeconfigPath string) (*rest.Config, error)

GetClientConfig returns a rest.Config object for working with the Kubernetes API

func GetClientSet 

func GetClientSet(kubeconfigPath string) (*kubernetes.Clientset, error)

GetClientSet - Get reference to k8s credentials to use APIS

func GetSecretValue 

func GetSecretValue(k8sClient coreV1Types.SecretInterface, secretName, key string) string

func OpenPortForwardPodWrapper 

func OpenPortForwardPodWrapper(
	clientset *kubernetes.Clientset,
	restConfig *rest.Config,
	podName string,
	namespace string,
	podPort int,
	podLocalPort int,
	stopChannel chan struct{},
)

OpenPortForwardPodWrapper wrapper for PortForwardPod function. This functions make it easier to open and close port forward request. By providing the function parameters, the function will manage to create the port forward. The parameter for the stopChannel controls when the port forward must be closed.

Example: 

vaultStopChannel := make(chan struct{}, 1)
go func() {
	OpenPortForwardWrapper(
		pkg.VaultPodName,
		pkg.VaultNamespace,
		pkg.VaultPodPort,
		pkg.VaultPodLocalPort,
		vaultStopChannel)
	wg.Done()
}()

func PodExecSession 

func PodExecSession(kubeConfigPath string, p *PodSessionOptions, silent bool) error

PodExecSession executes a command against a Pod

func PortForwardPod 

func PortForwardPod(clientset *kubernetes.Clientset, req PortForwardAPodRequest) error

PortForwardPod receives a PortForwardAPodRequest, and enables port forwarding for the specified resource. If the provided Pod name matches a running Pod, it will try to port forward for that Pod on the specified port.

func PortForwardPodWithRetry 

func PortForwardPodWithRetry(clientset *kubernetes.Clientset, req PortForwardAPodRequest) error

func ReadConfigMapV2 

func ReadConfigMapV2(kubeConfigPath string, namespace string, configMapName string) (map[string]string, error)

ReadConfigMapV2 reads the content of a Kubernetes ConfigMap

func ReadSecretV2 

func ReadSecretV2(clientset *kubernetes.Clientset, namespace string, secretName string) (map[string]string, error)

ReadSecretV2 reads the content of a Kubernetes Secret

func ReadService 

func ReadService(kubeConfigPath string, namespace string, serviceName string) (*v1.Service, error)

ReadService reads a Kubernetes Service object

func ReturnDeploymentObject 

func ReturnDeploymentObject(clientset *kubernetes.Clientset, matchLabel string, matchLabelValue string, namespace string, timeoutSeconds int) (*appsv1.Deployment, error)

ReturnDeploymentObject returns a matching appsv1.Deployment object based on the filters

func ReturnJobObject 

func ReturnJobObject(clientset *kubernetes.Clientset, namespace string, jobName string) (*batchv1.Job, error)

ReturnJobObject returns a matching appsv1.StatefulSet object based on the filters

func ReturnPodObject 

func ReturnPodObject(kubeConfigPath string, matchLabel string, matchLabelValue string, namespace string, timeoutSeconds int) (*v1.Pod, error)

ReturnPodObject returns a matching v1.Pod object based on the filters

func ReturnStatefulSetObject 

func ReturnStatefulSetObject(clientset *kubernetes.Clientset, matchLabel string, matchLabelValue string, namespace string, timeoutSeconds int) (*appsv1.StatefulSet, error)

ReturnStatefulSetObject returns a matching appsv1.StatefulSet object based on the filters

func VerifyArgoCDReadiness 

func VerifyArgoCDReadiness(clientset *kubernetes.Clientset, highAvailabilityEnabled bool, timeoutSeconds int) (bool, error)

VerifyArgoCDReadiness waits for critical resources within ArgoCD to be ready and only returns once they're all healthy

This helps prevent race conditions and timeouts

func WaitForDeploymentReady 

func WaitForDeploymentReady(clientset *kubernetes.Clientset, deployment *appsv1.Deployment, timeoutSeconds int) (bool, error)

WaitForDeploymentReady waits for a target Deployment to become ready

func WaitForJobComplete 

func WaitForJobComplete(clientset *kubernetes.Clientset, job *batchv1.Job, timeoutSeconds int64) (bool, error)

WaitForJobComplete waits for a target Job to reach completion

func WaitForNamespaceandPods 

func WaitForNamespaceandPods(kubeconfigPath, kubectlClientPath, namespace, podLabel string)

func WaitForPodReady 

func WaitForPodReady(clientset *kubernetes.Clientset, pod *v1.Pod, timeoutSeconds int) (bool, error)

WaitForPodReady waits for a target Pod to become ready

func WaitForStatefulSetReady 

func WaitForStatefulSetReady(clientset *kubernetes.Clientset, statefulset *appsv1.StatefulSet, timeoutSeconds int, ignoreReady bool) (bool, error)

WaitForStatefulSetReady waits for a target StatefulSet to become ready

Types

type KubernetesClient 

type KubernetesClient struct {
	Clientset      *kubernetes.Clientset
	RestConfig     *rest.Config
	KubeConfigPath string
}

func CreateKubeConfig 

func CreateKubeConfig(inCluster bool, kubeConfigPath string) *KubernetesClient

CreateKubeConfig returns a struct KubernetesClient with references to a clientset, restConfig, and path to the Kubernetes config used to generate the client

func (KubernetesClient) ApplyObjects 

func (kcl KubernetesClient) ApplyObjects(namespace string, yamlData [][]byte) error

ApplyObjects parses a structured Kubernetes-compatible yaml file and applies its objects to a target Kubernetes cluster

func (KubernetesClient) KustomizeBuild 

func (kcl KubernetesClient) KustomizeBuild(kustomizationDirectory string) (*bytes.Buffer, error)

KustomizeBuild parses a file path and returns manifests built via kustomization.yaml if present

kustomizationDirectory should be a directory containing a kustomization.yaml file and subsequent configuration

The return values is a string representation of parsed resources in yaml

func (KubernetesClient) ReadYAMLFile 

func (kcl KubernetesClient) ReadYAMLFile(filepath string) (string, error)

ReadYAMLFile reads a yaml file in the filesystem

func (KubernetesClient) SplitYAMLFile 

func (kcl KubernetesClient) SplitYAMLFile(yamlData *bytes.Buffer) ([][]byte, error)

SplitYAMLFile takes a separated (---) yaml doc and returns [][]byte

type PatchJson 

type PatchJson struct {
	Op   string `json:"op"`
	Path string `json:"path"`
}

type PodSessionOptions 

type PodSessionOptions struct {
	Command    []string
	Namespace  string
	PodName    string
	Stdin      bool
	Stdout     bool
	Stderr     bool
	TtyEnabled bool
}

podSessionOptions provides a struct to assign parameters to an exec session

type PortForwardAPodRequest 

type PortForwardAPodRequest struct {
	// RestConfig is the kubernetes config
	RestConfig *rest.Config
	// Pod is the selected pod for this port forwarding
	Pod v1.Pod
	// LocalPort is the local port that will be selected to expose the PodPort
	LocalPort int
	// PodPort is the target port for the pod
	PodPort int

	// StopCh is the channel used to manage the port forward lifecycle
	StopCh <-chan struct{}
	// ReadyCh communicates when the tunnel is ready to receive traffic
	ReadyCh chan struct{}
}

type PortForwardAServiceRequest 

type PortForwardAServiceRequest struct {
	// RestConfig is the kubernetes config
	RestConfig *rest.Config
	// Service is the selected service for this port forwarding
	Service v1.Service
	// LocalPort is the local port that will be selected to expose the ServicePort
	LocalPort int
	// ServicePort is the target port for the service
	ServicePort int

	// StopCh is the channel used to manage the port forward lifecycle
	StopCh <-chan struct{}
	// ReadyCh communicates when the tunnel is ready to receive traffic
	ReadyCh chan struct{}
}

Source Files

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