mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-10-01 01:36:09 -04:00
251 lines
8.3 KiB
Go
251 lines
8.3 KiB
Go
/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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package cmd
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import (
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"context"
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"errors"
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"fmt"
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"strings"
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"github.com/edgelesssys/constellation/v2/cli/internal/helm"
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"github.com/edgelesssys/constellation/v2/cli/internal/kubernetes"
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"github.com/edgelesssys/constellation/v2/internal/api/attestationconfigapi"
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"github.com/edgelesssys/constellation/v2/internal/attestation/variant"
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"github.com/edgelesssys/constellation/v2/internal/config"
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"github.com/edgelesssys/constellation/v2/internal/constants"
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"github.com/edgelesssys/constellation/v2/internal/file"
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"github.com/edgelesssys/constellation/v2/internal/kubernetes/kubectl"
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"github.com/edgelesssys/constellation/v2/operators/constellation-node-operator/v2/api/v1alpha1"
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"github.com/spf13/afero"
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"github.com/spf13/cobra"
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"gopkg.in/yaml.v3"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/client-go/dynamic"
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"k8s.io/client-go/tools/clientcmd"
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)
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// NewStatusCmd returns a new cobra.Command for the statuus command.
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func NewStatusCmd() *cobra.Command {
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cmd := &cobra.Command{
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Use: "status",
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Short: "Show status of a Constellation cluster",
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Long: "Show the status of a constellation cluster.\n\n" +
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"Shows microservice, image, and Kubernetes versions installed in the cluster. Also shows status of current version upgrades.",
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Args: cobra.NoArgs,
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RunE: runStatus,
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}
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return cmd
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}
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// runStatus runs the terminate command.
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func runStatus(cmd *cobra.Command, _ []string) error {
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log, err := newCLILogger(cmd)
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if err != nil {
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return fmt.Errorf("creating logger: %w", err)
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}
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defer log.Sync()
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kubeClient := kubectl.New()
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flags, err := parseStatusFlags(cmd)
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if err != nil {
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return fmt.Errorf("parsing flags: %w", err)
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}
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fileHandler := file.NewHandler(afero.NewOsFs())
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kubeConfig, err := fileHandler.Read(constants.AdminConfFilename)
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if err != nil {
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return fmt.Errorf("reading admin.conf: %w", err)
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}
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// need kubectl client to fetch nodes.
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if err := kubeClient.Initialize(kubeConfig); err != nil {
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return err
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}
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restConfig, err := clientcmd.RESTConfigFromKubeConfig(kubeConfig)
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if err != nil {
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return fmt.Errorf("creating k8s client config from kubeconfig: %w", err)
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}
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// need unstructed client to fetch NodeVersion CRD.
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unstructuredClient, err := dynamic.NewForConfig(restConfig)
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if err != nil {
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return fmt.Errorf("setting up custom resource client: %w", err)
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}
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// need helm client to fetch service versions.
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// The client used here, doesn't need to know the current workspace.
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// It may be refactored in the future for easier usage.
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helmClient, err := helm.NewUpgradeClient(kubectl.New(), constants.UpgradeDir, constants.AdminConfFilename, constants.HelmNamespace, log)
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if err != nil {
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return fmt.Errorf("setting up helm client: %w", err)
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}
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helmVersionGetter := func() (fmt.Stringer, error) {
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return helmClient.Versions()
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}
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fetcher := attestationconfigapi.NewFetcher()
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conf, err := config.New(fileHandler, constants.ConfigFilename, fetcher, flags.force)
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var configValidationErr *config.ValidationError
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if errors.As(err, &configValidationErr) {
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cmd.PrintErrln(configValidationErr.LongMessage())
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}
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variant := conf.GetAttestationConfig().GetVariant()
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stableClient, err := kubernetes.NewStableClient(constants.AdminConfFilename)
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if err != nil {
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return fmt.Errorf("setting up stable client: %w", err)
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}
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output, err := status(cmd.Context(), kubeClient, stableClient, helmVersionGetter, kubernetes.NewNodeVersionClient(unstructuredClient), variant)
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if err != nil {
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return fmt.Errorf("getting status: %w", err)
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}
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cmd.Print(output)
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return nil
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}
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// status queries the cluster for the relevant status information and returns the output string.
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func status(
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ctx context.Context, kubeClient kubeClient, cmClient configMapClient, getHelmVersions func() (fmt.Stringer, error),
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dynamicInterface kubernetes.DynamicInterface, attestVariant variant.Variant,
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) (string, error) {
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nodeVersion, err := kubernetes.GetConstellationVersion(ctx, dynamicInterface)
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if err != nil {
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return "", fmt.Errorf("getting constellation version: %w", err)
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}
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if len(nodeVersion.Status.Conditions) != 1 {
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return "", fmt.Errorf("expected exactly one condition, got %d", len(nodeVersion.Status.Conditions))
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}
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attestationConfig, err := getAttestationConfig(ctx, cmClient, attestVariant)
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if err != nil {
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return "", fmt.Errorf("getting attestation config: %w", err)
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}
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prettyYAML, err := yaml.Marshal(attestationConfig)
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if err != nil {
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return "", fmt.Errorf("marshalling attestation config: %w", err)
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}
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targetVersions, err := kubernetes.NewTargetVersions(nodeVersion)
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if err != nil {
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return "", fmt.Errorf("getting configured versions: %w", err)
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}
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serviceVersions, err := getHelmVersions()
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if err != nil {
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return "", fmt.Errorf("getting service versions: %w", err)
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}
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status, err := kubernetes.ClusterStatus(ctx, kubeClient)
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if err != nil {
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return "", fmt.Errorf("getting cluster status: %w", err)
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}
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return statusOutput(targetVersions, serviceVersions, status, nodeVersion, string(prettyYAML)), nil
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}
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func getAttestationConfig(ctx context.Context, cmClient configMapClient, attestVariant variant.Variant) (config.AttestationCfg, error) {
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joinConfig, err := cmClient.GetConfigMap(ctx, constants.JoinConfigMap)
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if err != nil {
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return nil, fmt.Errorf("getting current config map: %w", err)
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}
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rawAttestationConfig, ok := joinConfig.Data[constants.AttestationConfigFilename]
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if !ok {
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return nil, fmt.Errorf("attestationConfig not found in %s", constants.JoinConfigMap)
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}
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attestationConfig, err := config.UnmarshalAttestationConfig([]byte(rawAttestationConfig), attestVariant)
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if err != nil {
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return nil, fmt.Errorf("unmarshalling attestation config: %w", err)
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}
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return attestationConfig, nil
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}
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// statusOutput creates the status cmd output string by formatting the received information.
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func statusOutput(
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targetVersions kubernetes.TargetVersions, serviceVersions fmt.Stringer,
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status map[string]kubernetes.NodeStatus, nodeVersion v1alpha1.NodeVersion, rawAttestationConfig string,
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) string {
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builder := strings.Builder{}
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builder.WriteString(targetVersionsString(targetVersions))
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builder.WriteString(serviceVersions.String())
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builder.WriteString(fmt.Sprintf("Cluster status: %s\n", nodeVersion.Status.Conditions[0].Message))
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builder.WriteString(nodeStatusString(status, targetVersions))
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builder.WriteString(fmt.Sprintf("Attestation config:\n%s", indentEntireStringWithTab(rawAttestationConfig)))
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return builder.String()
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}
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func indentEntireStringWithTab(input string) string {
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lines := strings.Split(input, "\n")
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for i, line := range lines[:len(lines)-1] {
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lines[i] = "\t" + line
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}
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return strings.Join(lines, "\n")
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}
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// nodeStatusString creates the node status part of the output string.
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func nodeStatusString(status map[string]kubernetes.NodeStatus, targetVersions kubernetes.TargetVersions) string {
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var upToDateImages int
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var upToDateK8s int
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for _, node := range status {
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if node.KubeletVersion() == targetVersions.Kubernetes() {
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upToDateK8s++
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}
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if node.ImageVersion() == targetVersions.ImagePath() {
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upToDateImages++
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}
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}
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builder := strings.Builder{}
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if upToDateImages != len(status) || upToDateK8s != len(status) {
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builder.WriteString(fmt.Sprintf("\tImage: %d/%d\n", upToDateImages, len(status)))
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builder.WriteString(fmt.Sprintf("\tKubernetes: %d/%d\n", upToDateK8s, len(status)))
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}
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return builder.String()
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}
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// targetVersionsString creates the target versions part of the output string.
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func targetVersionsString(target kubernetes.TargetVersions) string {
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builder := strings.Builder{}
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builder.WriteString("Target versions:\n")
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builder.WriteString(fmt.Sprintf("\tImage: %s\n", target.Image()))
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builder.WriteString(fmt.Sprintf("\tKubernetes: %s\n", target.Kubernetes()))
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return builder.String()
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}
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type statusFlags struct {
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workspace string
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force bool
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}
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func parseStatusFlags(cmd *cobra.Command) (statusFlags, error) {
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workspace, err := cmd.Flags().GetString("workspace")
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if err != nil {
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return statusFlags{}, fmt.Errorf("getting config flag: %w", err)
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}
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force, err := cmd.Flags().GetBool("force")
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if err != nil {
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return statusFlags{}, fmt.Errorf("getting config flag: %w", err)
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}
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return statusFlags{
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workspace: workspace,
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force: force,
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}, nil
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}
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type kubeClient interface {
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GetNodes(ctx context.Context) ([]corev1.Node, error)
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}
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type configMapClient interface {
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GetConfigMap(ctx context.Context, name string) (*corev1.ConfigMap, error)
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}
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