feat: provision kind clusters

apptests/go.mod

@@ -0,0 +1,33 @@
+module github.com/mesosphere/kommander-applications/apptests
+
+go 1.20
+
+require (
+	github.com/stretchr/testify v1.8.4
+	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/google/safetext v0.0.0-20220905092116-b49f7bc46da2 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/pelletier/go-toml v1.9.4 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rogpeppe/go-internal v1.11.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/evanphx/json-patch/v5 v5.6.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/spf13/cobra v1.7.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/sys v0.12.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)

apptests/go.sum

@@ -0,0 +1,64 @@
+github.com/BurntSushi/toml v1.0.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
+github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/alessio/shellescape v1.4.1 h1:V7yhSDDn8LP4lc4jS8pFkt0zCnzVJlG5JXy9BVKJUX0=
+github.com/alessio/shellescape v1.4.1/go.mod h1:PZAiSCk0LJaZkiCSkPv8qIobYglO3FPpyFjDCtHLS30=
+github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/evanphx/json-patch/v5 v5.6.0 h1:b91NhWfaz02IuVxO9faSllyAtNXHMPkC5J8sJCLunww=
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+github.com/google/safetext v0.0.0-20220905092116-b49f7bc46da2 h1:SJ+NtwL6QaZ21U+IrK7d0gGgpjGGvd2kz+FzTHVzdqI=
+github.com/google/safetext v0.0.0-20220905092116-b49f7bc46da2/go.mod h1:Tv1PlzqC9t8wNnpPdctvtSUOPUUg4SHeE6vR1Ir2hmg=
+github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
+github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
+github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
+github.com/pelletier/go-toml v1.9.4 h1:tjENF6MfZAg8e4ZmZTeWaWiT2vXtsoO6+iuOjFhECwM=
+github.com/pelletier/go-toml v1.9.4/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
+github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/rogpeppe/go-internal v1.11.0 h1:cWPaGQEPrBb5/AsnsZesgZZ9yb1OQ+GOISoDNXVBh4M=
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+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
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apptests/kind/kind.go

@@ -0,0 +1,78 @@
+// Package kind provides function for creating and managing kind clusters.
+package kind
+
+import (
+	"context"
+	"os"
+
+	"sigs.k8s.io/kind/pkg/cluster"
+	"sigs.k8s.io/kind/pkg/cmd"
+)
+
+type Cluster struct {
+	provider           *cluster.Provider
+	kubeconfigFilePath string
+	name               string
+}
+
+const defaultClusterName = "kind"
+
+// CreateCluster creates a new kind cluster with the given name.
+func CreateCluster(ctx context.Context, name string) (*Cluster, error) {
+	select {
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	default:
+	}
+
+	kubeconfigFile, err := os.CreateTemp("", "*-kubeconfig")
+	if err != nil {
+		return nil, err
+	}
+
+	provider := cluster.NewProvider(cluster.ProviderWithLogger(cmd.NewLogger()))
+	if name == "" {
+		name = defaultClusterName
+	}
+	err = provider.Create(name, cluster.CreateWithKubeconfigPath(kubeconfigFile.Name()))
+	if err != nil {
+		return nil, err
+	}
+
+	// ExportKubeConfig exports the kubeconfig for the cluster with the given name to the standard output or a file.
+	// This makes it easy for other applications, such as fluxcd, to work with the cluster.
+	err = provider.ExportKubeConfig(name, "", false)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Cluster{
+		provider:           provider,
+		kubeconfigFilePath: kubeconfigFile.Name(),
+		name:               name,
+	}, nil
+}
+
+// Delete deletes the cluster and the temporary kubeconfig file.
+func (c *Cluster) Delete(ctx context.Context, name string) error {
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	default:
+	}
+
+	err := c.provider.Delete(c.name, c.kubeconfigFilePath)
+	if err != nil {
+		return err
+	}
+
+	return os.Remove(c.kubeconfigFilePath)
+}
+
+func (c *Cluster) KubeconfigFilePath() string {
+	return c.kubeconfigFilePath
+}
+
+func (c *Cluster) Name() string {
+	return c.name
+}

apptests/kind/kind_test.go

@@ -0,0 +1,30 @@
+package kind
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCreateCluster(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+	defer cancel()
+
+	// create a test cluster name
+	name := "test-cluster"
+	cluster, err := CreateCluster(ctx, name)
+
+	// assert that there is no error and the cluster is not nil
+	assert.NoError(t, err)
+	assert.NotNil(t, cluster)
+
+	// assert that the cluster has the expected name and kubeconfig file path
+	assert.Equal(t, name, cluster.Name())
+	assert.NotEmpty(t, cluster.KubeconfigFilePath())
+
+	// delete the cluster
+	err = cluster.Delete(ctx, name)
+	assert.NoError(t, err)
+}