mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-12-25 15:39:37 -05:00
654 lines
19 KiB
Go
654 lines
19 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 helm
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import (
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"bytes"
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"embed"
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"encoding/base64"
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"encoding/json"
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"fmt"
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"io/fs"
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"os"
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"path/filepath"
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"strings"
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"github.com/pkg/errors"
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"helm.sh/helm/pkg/ignore"
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"helm.sh/helm/v3/pkg/chart"
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"helm.sh/helm/v3/pkg/chart/loader"
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"helm.sh/helm/v3/pkg/chartutil"
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"github.com/edgelesssys/constellation/v2/cli/internal/helm/imageversion"
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"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
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"github.com/edgelesssys/constellation/v2/internal/compatibility"
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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/deploy/helm"
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"github.com/edgelesssys/constellation/v2/internal/versions"
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)
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// Run `go generate` to download (and patch) upstream helm charts.
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//go:generate ./generateCilium.sh
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//go:generate ./update-csi-charts.sh
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//go:generate ./generateCertManager.sh
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//go:embed all:charts/*
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var helmFS embed.FS
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type chartInfo struct {
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releaseName string
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chartName string
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path string
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}
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var (
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ciliumInfo = chartInfo{releaseName: "cilium", chartName: "cilium", path: "charts/cilium"}
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certManagerInfo = chartInfo{releaseName: "cert-manager", chartName: "cert-manager", path: "charts/cert-manager"}
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constellationOperatorsInfo = chartInfo{releaseName: "constellation-operators", chartName: "constellation-operators", path: "charts/edgeless/operators"}
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constellationServicesInfo = chartInfo{releaseName: "constellation-services", chartName: "constellation-services", path: "charts/edgeless/constellation-services"}
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)
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// ChartLoader loads embedded helm charts.
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type ChartLoader struct {
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csp cloudprovider.Provider
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joinServiceImage string
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keyServiceImage string
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ccmImage string
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cnmImage string
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autoscalerImage string
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verificationServiceImage string
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gcpGuestAgentImage string
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konnectivityImage string
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constellationOperatorImage string
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nodeMaintenanceOperatorImage string
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}
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// NewLoader creates a new ChartLoader.
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func NewLoader(csp cloudprovider.Provider, k8sVersion versions.ValidK8sVersion) *ChartLoader {
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var ccmImage, cnmImage string
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switch csp {
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case cloudprovider.AWS:
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ccmImage = versions.VersionConfigs[k8sVersion].CloudControllerManagerImageAWS
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case cloudprovider.Azure:
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ccmImage = versions.VersionConfigs[k8sVersion].CloudControllerManagerImageAzure
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cnmImage = versions.VersionConfigs[k8sVersion].CloudNodeManagerImageAzure
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case cloudprovider.GCP:
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ccmImage = versions.VersionConfigs[k8sVersion].CloudControllerManagerImageGCP
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case cloudprovider.OpenStack:
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ccmImage = versions.VersionConfigs[k8sVersion].CloudControllerManagerImageOpenStack
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}
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// TODO(malt3): Allow overriding container image registry + prefix for all images
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// (e.g. for air-gapped environments).
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return &ChartLoader{
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csp: csp,
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joinServiceImage: imageversion.JoinService("", ""),
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keyServiceImage: imageversion.KeyService("", ""),
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ccmImage: ccmImage,
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cnmImage: cnmImage,
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autoscalerImage: versions.VersionConfigs[k8sVersion].ClusterAutoscalerImage,
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verificationServiceImage: imageversion.VerificationService("", ""),
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gcpGuestAgentImage: versions.GcpGuestImage,
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konnectivityImage: versions.KonnectivityAgentImage,
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constellationOperatorImage: imageversion.ConstellationNodeOperator("", ""),
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nodeMaintenanceOperatorImage: versions.NodeMaintenanceOperatorImage,
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}
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}
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// AvailableServiceVersions returns the chart version number of the bundled service versions.
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func AvailableServiceVersions() (string, error) {
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servicesChart, err := loadChartsDir(helmFS, constellationServicesInfo.path)
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if err != nil {
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return "", fmt.Errorf("loading constellation-services chart: %w", err)
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}
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return compatibility.EnsurePrefixV(servicesChart.Metadata.Version), nil
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}
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// Load the embedded helm charts.
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func (i *ChartLoader) Load(config *config.Config, conformanceMode bool, masterSecret, salt []byte) ([]byte, error) {
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ciliumRelease, err := i.loadRelease(ciliumInfo)
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if err != nil {
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return nil, fmt.Errorf("loading cilium: %w", err)
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}
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extendCiliumValues(ciliumRelease.Values, conformanceMode)
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certManagerRelease, err := i.loadRelease(certManagerInfo)
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if err != nil {
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return nil, fmt.Errorf("loading cert-manager: %w", err)
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}
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operatorRelease, err := i.loadRelease(constellationOperatorsInfo)
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if err != nil {
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return nil, fmt.Errorf("loading operators: %w", err)
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}
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conServicesRelease, err := i.loadRelease(constellationServicesInfo)
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if err != nil {
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return nil, fmt.Errorf("loading constellation-services: %w", err)
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}
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if err := extendConstellationServicesValues(conServicesRelease.Values, config, masterSecret, salt); err != nil {
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return nil, fmt.Errorf("extending constellation-services values: %w", err)
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}
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releases := helm.Releases{Cilium: ciliumRelease, CertManager: certManagerRelease, Operators: operatorRelease, ConstellationServices: conServicesRelease}
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rel, err := json.Marshal(releases)
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if err != nil {
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return nil, err
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}
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return rel, nil
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}
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// loadRelease loads the embedded chart and values depending on the given info argument.
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func (i *ChartLoader) loadRelease(info chartInfo) (helm.Release, error) {
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chart, err := loadChartsDir(helmFS, info.path)
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if err != nil {
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return helm.Release{}, fmt.Errorf("loading %s chart: %w", info.releaseName, err)
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}
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var values map[string]any
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switch info.releaseName {
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case ciliumInfo.releaseName:
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values, err = i.loadCiliumValues()
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case certManagerInfo.releaseName:
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values = i.loadCertManagerValues()
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case constellationOperatorsInfo.releaseName:
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updateVersions(chart, compatibility.EnsurePrefixV(constants.VersionInfo()))
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values, err = i.loadOperatorsValues()
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case constellationServicesInfo.releaseName:
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updateVersions(chart, compatibility.EnsurePrefixV(constants.VersionInfo()))
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values, err = i.loadConstellationServicesValues()
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}
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if err != nil {
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return helm.Release{}, fmt.Errorf("loading %s values: %w", info.releaseName, err)
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}
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chartRaw, err := i.marshalChart(chart)
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if err != nil {
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return helm.Release{}, fmt.Errorf("packaging %s chart: %w", info.releaseName, err)
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}
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return helm.Release{Chart: chartRaw, Values: values, ReleaseName: info.releaseName, Wait: false}, nil
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}
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// loadCiliumValues is used to separate the marshalling step from the loading step.
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// This reduces the time unit tests take to execute.
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func (i *ChartLoader) loadCiliumValues() (map[string]any, error) {
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var values map[string]any
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switch i.csp {
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case cloudprovider.AWS:
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values = awsVals
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case cloudprovider.Azure:
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values = azureVals
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case cloudprovider.GCP:
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values = gcpVals
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case cloudprovider.OpenStack:
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values = openStackVals
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case cloudprovider.QEMU:
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values = qemuVals
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default:
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return nil, fmt.Errorf("unknown csp: %s", i.csp)
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}
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return values, nil
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}
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// extendCiliumValues extends the given values map by some values depending on user input.
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// This extra step of separating the application of user input is necessary since service upgrades should
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// reuse user input from the init step. However, we can't rely on reuse-values, because
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// during upgrades we all values need to be set locally as they might have changed.
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// Also, the charts are not rendered correctly without all of these values.
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func extendCiliumValues(in map[string]any, conformanceMode bool) {
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if conformanceMode {
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in["kubeProxyReplacementHealthzBindAddr"] = ""
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in["kubeProxyReplacement"] = "partial"
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in["sessionAffinity"] = true
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in["cni"] = map[string]any{
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"chainingMode": "portmap",
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}
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}
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}
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// loadCertManagerHelper is used to separate the marshalling step from the loading step.
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// This reduces the time unit tests take to execute.
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func (i *ChartLoader) loadCertManagerValues() map[string]any {
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return map[string]any{
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"installCRDs": true,
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"prometheus": map[string]any{
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"enabled": false,
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},
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"tolerations": []map[string]any{
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{
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"key": "node-role.kubernetes.io/control-plane",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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{
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"key": "node-role.kubernetes.io/master",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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},
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"webhook": map[string]any{
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"tolerations": []map[string]any{
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{
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"key": "node-role.kubernetes.io/control-plane",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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{
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"key": "node-role.kubernetes.io/master",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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},
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},
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"cainjector": map[string]any{
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"tolerations": []map[string]any{
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{
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"key": "node-role.kubernetes.io/control-plane",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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{
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"key": "node-role.kubernetes.io/master",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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},
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},
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"startupapicheck": map[string]any{
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"timeout": "5m",
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"extraArgs": []string{
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"--verbose",
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},
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"tolerations": []map[string]any{
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{
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"key": "node-role.kubernetes.io/control-plane",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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{
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"key": "node-role.kubernetes.io/master",
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"effect": "NoSchedule",
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"operator": "Exists",
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},
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},
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},
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}
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}
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// loadOperatorsHelper is used to separate the marshalling step from the loading step.
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// This reduces the time unit tests take to execute.
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func (i *ChartLoader) loadOperatorsValues() (map[string]any, error) {
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values := map[string]any{
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"constellation-operator": map[string]any{
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"controllerManager": map[string]any{
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"manager": map[string]any{
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"image": i.constellationOperatorImage,
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},
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},
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},
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"node-maintenance-operator": map[string]any{
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"controllerManager": map[string]any{
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"manager": map[string]any{
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"image": i.nodeMaintenanceOperatorImage,
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},
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},
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},
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}
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switch i.csp {
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case cloudprovider.AWS:
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conOpVals, ok := values["constellation-operator"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid constellation-operator values")
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}
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conOpVals["csp"] = "AWS"
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values["tags"] = map[string]any{
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"AWS": true,
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}
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case cloudprovider.Azure:
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conOpVals, ok := values["constellation-operator"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid constellation-operator values")
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}
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conOpVals["csp"] = "Azure"
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values["tags"] = map[string]any{
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"Azure": true,
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}
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case cloudprovider.GCP:
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conOpVals, ok := values["constellation-operator"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid constellation-operator values")
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}
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conOpVals["csp"] = "GCP"
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values["tags"] = map[string]any{
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"GCP": true,
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}
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case cloudprovider.OpenStack:
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conOpVals, ok := values["constellation-operator"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid constellation-operator values")
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}
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conOpVals["csp"] = "OpenStack"
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values["tags"] = map[string]any{
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"OpenStack": true,
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}
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case cloudprovider.QEMU:
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conOpVals, ok := values["constellation-operator"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid constellation-operator values")
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}
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conOpVals["csp"] = "QEMU"
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values["tags"] = map[string]any{
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"QEMU": true,
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}
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}
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return values, nil
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}
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// loadConstellationServicesHelper is used to separate the marshalling step from the loading step.
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// This reduces the time unit tests take to execute.
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func (i *ChartLoader) loadConstellationServicesValues() (map[string]any, error) {
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values := map[string]any{
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"global": map[string]any{
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"keyServicePort": constants.KeyServicePort,
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"keyServiceNamespace": "", // empty namespace means we use the release namespace
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"serviceBasePath": constants.ServiceBasePath,
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"joinConfigCMName": constants.JoinConfigMap,
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"internalCMName": constants.InternalConfigMap,
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},
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"key-service": map[string]any{
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"image": i.keyServiceImage,
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"saltKeyName": constants.ConstellationSaltKey,
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"masterSecretKeyName": constants.ConstellationMasterSecretKey,
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"masterSecretName": constants.ConstellationMasterSecretStoreName,
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},
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"join-service": map[string]any{
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"csp": i.csp.String(),
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"image": i.joinServiceImage,
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},
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"ccm": map[string]any{
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"csp": i.csp.String(),
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},
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"autoscaler": map[string]any{
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"csp": i.csp.String(),
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"image": i.autoscalerImage,
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},
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"verification-service": map[string]any{
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"image": i.verificationServiceImage,
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},
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"gcp-guest-agent": map[string]any{
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"image": i.gcpGuestAgentImage,
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},
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"konnectivity": map[string]any{
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"image": i.konnectivityImage,
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},
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}
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switch i.csp {
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case cloudprovider.AWS:
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ccmVals, ok := values["ccm"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid ccm values")
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}
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ccmVals["AWS"] = map[string]any{
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"image": i.ccmImage,
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}
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values["tags"] = map[string]any{
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"AWS": true,
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}
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case cloudprovider.Azure:
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ccmVals, ok := values["ccm"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid ccm values")
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}
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ccmVals["Azure"] = map[string]any{
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"image": i.ccmImage,
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}
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values["cnm"] = map[string]any{
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"image": i.cnmImage,
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}
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values["tags"] = map[string]any{
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"Azure": true,
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}
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case cloudprovider.GCP:
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ccmVals, ok := values["ccm"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid ccm values")
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}
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ccmVals["GCP"] = map[string]any{
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"image": i.ccmImage,
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}
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values["tags"] = map[string]any{
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"GCP": true,
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}
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case cloudprovider.OpenStack:
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ccmVals, ok := values["ccm"].(map[string]any)
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if !ok {
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return nil, errors.New("invalid ccm values")
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}
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ccmVals["OpenStack"] = map[string]any{
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"image": i.ccmImage,
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}
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values["tags"] = map[string]any{
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"OpenStack": true,
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}
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case cloudprovider.QEMU:
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values["tags"] = map[string]any{
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"QEMU": true,
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}
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}
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return values, nil
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}
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// extendConstellationServicesValues extends the given values map by some values depending on user input.
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// Values set inside this function are only applied during init, not during upgrade.
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func extendConstellationServicesValues(
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in map[string]any, cfg *config.Config, masterSecret, salt []byte,
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) error {
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keyServiceValues, ok := in["key-service"].(map[string]any)
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if !ok {
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return errors.New("missing 'key-service' key")
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}
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keyServiceValues["masterSecret"] = base64.StdEncoding.EncodeToString(masterSecret)
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keyServiceValues["salt"] = base64.StdEncoding.EncodeToString(salt)
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joinServiceVals, ok := in["join-service"].(map[string]any)
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if !ok {
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return errors.New("invalid join-service values")
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}
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joinServiceVals["attestationVariant"] = cfg.GetAttestationConfig().GetVariant().String()
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// attestation config is updated separately during upgrade,
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// so we only set them in Helm during init.
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attestationConfigJSON, err := json.Marshal(cfg.GetAttestationConfig())
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if err != nil {
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return fmt.Errorf("marshalling measurements: %w", err)
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}
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joinServiceVals["attestationConfig"] = string(attestationConfigJSON)
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verifyServiceVals, ok := in["verification-service"].(map[string]any)
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if !ok {
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return errors.New("invalid verification-service values")
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}
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verifyServiceVals["attestationVariant"] = cfg.GetAttestationConfig().GetVariant().String()
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csp := cfg.GetProvider()
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switch csp {
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case cloudprovider.Azure:
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in["azure"] = map[string]any{
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"deployCSIDriver": cfg.DeployCSIDriver(),
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}
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case cloudprovider.GCP:
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in["gcp"] = map[string]any{
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"deployCSIDriver": cfg.DeployCSIDriver(),
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}
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|
case cloudprovider.OpenStack:
|
|
in["openstack"] = map[string]any{
|
|
"deployYawolLoadBalancer": cfg.DeployYawolLoadBalancer(),
|
|
}
|
|
if cfg.DeployYawolLoadBalancer() {
|
|
in["yawol-controller"] = map[string]any{
|
|
"yawolOSSecretName": "yawolkey",
|
|
// has to be larger than ~30s to account for slow OpenStack API calls.
|
|
"openstackTimeout": "1m",
|
|
"yawolFloatingID": cfg.Provider.OpenStack.FloatingIPPoolID,
|
|
"yawolFlavorID": cfg.Provider.OpenStack.YawolFlavorID,
|
|
"yawolImageID": cfg.Provider.OpenStack.YawolImageID,
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// updateVersions changes all versions of direct dependencies that are set to "0.0.0" to newVersion.
|
|
func updateVersions(chart *chart.Chart, newVersion string) {
|
|
chart.Metadata.Version = newVersion
|
|
selectedDeps := chart.Metadata.Dependencies
|
|
for i := range selectedDeps {
|
|
if selectedDeps[i].Version == "0.0.0" {
|
|
selectedDeps[i].Version = newVersion
|
|
}
|
|
}
|
|
|
|
deps := chart.Dependencies()
|
|
for i := range deps {
|
|
if deps[i].Metadata.Version == "0.0.0" {
|
|
deps[i].Metadata.Version = newVersion
|
|
}
|
|
}
|
|
}
|
|
|
|
// marshalChart takes a Chart object, packages it to a temporary file and returns the content of that file.
|
|
// We currently need to take this approach of marshaling as dependencies are not marshaled correctly with json.Marshal.
|
|
// This stems from the fact that chart.Chart does not export the dependencies property.
|
|
func (i *ChartLoader) marshalChart(chart *chart.Chart) ([]byte, error) {
|
|
// A separate tmpdir path is necessary since during unit testing multiple go routines are accessing the same path, possibly deleting files for other routines.
|
|
tmpDirPath, err := os.MkdirTemp("", "*")
|
|
defer os.Remove(tmpDirPath)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("creating tmp dir: %w", err)
|
|
}
|
|
|
|
path, err := chartutil.Save(chart, tmpDirPath)
|
|
defer os.Remove(path)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("chartutil save: %w", err)
|
|
}
|
|
chartRaw, err := os.ReadFile(path)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("reading packaged chart: %w", err)
|
|
}
|
|
return chartRaw, nil
|
|
}
|
|
|
|
// taken from loader.LoadDir from the helm go module
|
|
// loadChartsDir loads from a directory.
|
|
//
|
|
// This loads charts only from directories.
|
|
func loadChartsDir(efs embed.FS, dir string) (*chart.Chart, error) {
|
|
utf8bom := []byte{0xEF, 0xBB, 0xBF}
|
|
// Just used for errors.
|
|
c := &chart.Chart{}
|
|
|
|
rules := ignore.Empty()
|
|
ifile, err := efs.ReadFile(filepath.Join(dir, ignore.HelmIgnore))
|
|
if err == nil {
|
|
r, err := ignore.Parse(bytes.NewReader(ifile))
|
|
if err != nil {
|
|
return c, err
|
|
}
|
|
rules = r
|
|
}
|
|
rules.AddDefaults()
|
|
|
|
files := []*loader.BufferedFile{}
|
|
|
|
walk := func(path string, d fs.DirEntry, err error) error {
|
|
n := strings.TrimPrefix(path, dir)
|
|
if n == "" {
|
|
// No need to process top level. Avoid bug with helmignore .* matching
|
|
// empty names. See issue https://github.com/kubernetes/helm/issues/1776.
|
|
return nil
|
|
}
|
|
|
|
// Normalize to / since it will also work on Windows
|
|
n = filepath.ToSlash(n)
|
|
|
|
// Check input err
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
fi, err := d.Info()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if d.IsDir() {
|
|
// Directory-based ignore rules should involve skipping the entire
|
|
// contents of that directory.
|
|
if rules.Ignore(n, fi) {
|
|
return filepath.SkipDir
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// If a .helmignore file matches, skip this file.
|
|
if rules.Ignore(n, fi) {
|
|
return nil
|
|
}
|
|
|
|
// Irregular files include devices, sockets, and other uses of files that
|
|
// are not regular files. In Go they have a file mode type bit set.
|
|
// See https://golang.org/pkg/os/#FileMode for examples.
|
|
if !fi.Mode().IsRegular() {
|
|
return fmt.Errorf("cannot load irregular file %s as it has file mode type bits set", path)
|
|
}
|
|
|
|
data, err := efs.ReadFile(path)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error reading %s", n)
|
|
}
|
|
|
|
data = bytes.TrimPrefix(data, utf8bom)
|
|
n = strings.TrimPrefix(n, "/")
|
|
|
|
files = append(files, &loader.BufferedFile{Name: n, Data: data})
|
|
return nil
|
|
}
|
|
|
|
if err := fs.WalkDir(efs, dir, walk); err != nil {
|
|
return c, err
|
|
}
|
|
|
|
return loader.LoadFiles(files)
|
|
}
|