feat: add kubernetes client (#1654)

apptests/client/client.go

@@ -0,0 +1,45 @@
+// Package client provides a client for interacting with Kubernetes clusters.
+// It wraps the kubernetes client-go library and exposes a simple interface
+// for creating and using a kubernetes client.
+package client
+
+import (
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/clientcmd"
+)
+
+type Client struct {
+	config    *rest.Config
+	clientset *kubernetes.Clientset
+}
+
+// NewClient creates a new kubernetes client.
+func NewClient(kubeconfigPath string) (*Client, error) {
+	// build the config from the kubeconfig path
+	conf, err := clientcmd.BuildConfigFromFlags("", kubeconfigPath)
+	if err != nil {
+		return nil, err
+	}
+
+	// create the clientset with the config and the context
+	clientset, err := kubernetes.NewForConfig(conf)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Client{
+		config:    conf,
+		clientset: clientset,
+	}, nil
+}
+
+// Config returns the client config.
+func (c *Client) Config() *rest.Config {
+	return c.config
+}
+
+// Clientset returns the kubernetes clientset.
+func (c *Client) Clientset() *kubernetes.Clientset {
+	return c.clientset
+}

apptests/go.mod

@@ -0,0 +1,66 @@
+module github.com/mesosphere/kommander-applications/apptests
+
+go 1.20
+
+require (
+	github.com/stretchr/testify v1.8.4
+	k8s.io/client-go v0.27.4
+	sigs.k8s.io/kind v0.20.0
+)
+
+require (
+	github.com/BurntSushi/toml v1.3.2 // indirect
+	github.com/alessio/shellescape v1.4.1 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.10.2 // indirect
+	github.com/evanphx/json-patch/v5 v5.6.0 // indirect
+	github.com/go-logr/logr v1.2.4 // indirect
+	github.com/go-openapi/jsonpointer v0.19.6 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/swag v0.22.3 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/gnostic v0.6.9 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/pprof v0.0.0-20230406165453-00490a63f317 // indirect
+	github.com/google/safetext v0.0.0-20220905092116-b49f7bc46da2 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/imdario/mergo v0.3.15 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/onsi/ginkgo/v2 v2.11.0 // indirect
+	github.com/onsi/gomega v1.27.10 // indirect
+	github.com/pelletier/go-toml v1.9.4 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/spf13/cobra v1.7.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/net v0.15.0 // indirect
+	golang.org/x/oauth2 v0.10.0 // indirect
+	golang.org/x/sys v0.12.0 // indirect
+	golang.org/x/term v0.12.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/time v0.3.0 // indirect
+	golang.org/x/tools v0.13.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/api v0.27.4 // indirect
+	k8s.io/apimachinery v0.27.4 // indirect
+	k8s.io/klog/v2 v2.100.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20230501164219-8b0f38b5fd1f // indirect
+	k8s.io/utils v0.0.0-20230505201702-9f6742963106 // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.3.0 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)