mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-10-01 01:36:09 -04:00
431 lines
14 KiB
Go
431 lines
14 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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"fmt"
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"io/fs"
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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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"github.com/edgelesssys/constellation/v2/cli/internal/clusterid"
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"github.com/edgelesssys/constellation/v2/cli/internal/helm/imageversion"
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"github.com/edgelesssys/constellation/v2/cli/internal/state"
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"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
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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/kms/uri"
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"github.com/edgelesssys/constellation/v2/internal/semver"
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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:generate ./update-aws-load-balancer-chart.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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// Charts we fetch from an upstream with real versions.
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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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awsLBControllerInfo = chartInfo{releaseName: "aws-load-balancer-controller", chartName: "aws-load-balancer-controller", path: "charts/aws-load-balancer-controller"}
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// Bundled charts with embedded with version 0.0.0.
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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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csiInfo = chartInfo{releaseName: "constellation-csi", chartName: "constellation-csi", path: "charts/edgeless/csi"}
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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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config *config.Config
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joinServiceImage string
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keyServiceImage string
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ccmImage string // cloud controller manager image
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azureCNMImage string // Azure cloud node manager image
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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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clusterName string
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idFile clusterid.File
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cliVersion semver.Semver
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}
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// newLoader creates a new ChartLoader.
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func newLoader(config *config.Config, idFile clusterid.File, cliVersion semver.Semver) *chartLoader {
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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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var ccmImage, cnmImage string
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csp := config.GetProvider()
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k8sVersion := config.KubernetesVersion
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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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return &chartLoader{
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cliVersion: cliVersion,
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csp: csp,
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idFile: idFile,
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ccmImage: ccmImage,
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azureCNMImage: cnmImage,
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config: config,
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joinServiceImage: imageversion.JoinService("", ""),
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keyServiceImage: imageversion.KeyService("", ""),
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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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// releaseApplyOrder is a list of releases in the order they should be applied.
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// makes sure if a release was removed as a dependency from one chart,
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// and then added as a new standalone chart (or as a dependency of another chart),
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// that the new release is installed after the existing one to avoid name conflicts.
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type releaseApplyOrder []Release
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// loadReleases loads the embedded helm charts and returns them as a HelmReleases object.
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func (i *chartLoader) loadReleases(conformanceMode bool, helmWaitMode WaitMode, masterSecret uri.MasterSecret,
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serviceAccURI string, infra state.Infrastructure,
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) (releaseApplyOrder, error) {
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ciliumRelease, err := i.loadRelease(ciliumInfo, helmWaitMode)
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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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ciliumVals := extraCiliumValues(i.config.GetProvider(), conformanceMode, infra)
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ciliumRelease.Values = mergeMaps(ciliumRelease.Values, ciliumVals)
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certManagerRelease, err := i.loadRelease(certManagerInfo, helmWaitMode)
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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, helmWaitMode)
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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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operatorRelease.Values = mergeMaps(operatorRelease.Values, extraOperatorValues(i.idFile.UID))
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conServicesRelease, err := i.loadRelease(constellationServicesInfo, helmWaitMode)
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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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svcVals, err := extraConstellationServicesValues(i.config, masterSecret, i.idFile.UID, serviceAccURI, infra)
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if err != nil {
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return nil, fmt.Errorf("extending constellation-services values: %w", err)
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}
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conServicesRelease.Values = mergeMaps(conServicesRelease.Values, svcVals)
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releases := releaseApplyOrder{ciliumRelease, conServicesRelease, certManagerRelease}
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if i.config.DeployCSIDriver() {
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csiRelease, err := i.loadRelease(csiInfo, helmWaitMode)
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if err != nil {
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return nil, fmt.Errorf("loading snapshot CRDs: %w", err)
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}
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extraCSIvals, err := extraCSIValues(i.config.GetProvider(), serviceAccURI)
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if err != nil {
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return nil, fmt.Errorf("extending CSI values: %w", err)
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}
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csiRelease.Values = mergeMaps(csiRelease.Values, extraCSIvals)
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releases = append(releases, csiRelease)
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}
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if i.config.HasProvider(cloudprovider.AWS) {
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awsRelease, err := i.loadRelease(awsLBControllerInfo, helmWaitMode)
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if err != nil {
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return nil, fmt.Errorf("loading aws-services: %w", err)
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}
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releases = append(releases, awsRelease)
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}
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releases = append(releases, operatorRelease)
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return releases, 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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// IMPORTANT: .helmignore rules specifying files in subdirectories are not applied (e.g. crds/kustomization.yaml).
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func (i *chartLoader) loadRelease(info chartInfo, helmWaitMode WaitMode) (Release, error) {
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chart, err := loadChartsDir(helmFS, info.path)
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if err != nil {
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return 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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var ok bool
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values, ok = ciliumVals[i.csp.String()]
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if !ok {
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return Release{}, fmt.Errorf("cilium values for csp %q not found", i.csp.String())
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}
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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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values = i.loadOperatorsValues()
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case constellationServicesInfo.releaseName:
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values = i.loadConstellationServicesValues()
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case awsLBControllerInfo.releaseName:
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values = i.loadAWSLBControllerValues()
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case csiInfo.releaseName:
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values = i.loadCSIValues()
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}
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// Charts we package ourselves have version 0.0.0.
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// Before use, we need to update the version of the chart to the current CLI version.
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if isCLIVersionedRelease(info.releaseName) {
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updateVersions(chart, i.cliVersion)
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}
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return Release{Chart: chart, Values: values, ReleaseName: info.releaseName, WaitMode: helmWaitMode}, nil
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}
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func (i *chartLoader) loadAWSLBControllerValues() map[string]any {
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return map[string]any{
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"clusterName": clusterid.GetClusterName(i.config, i.idFile),
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"tolerations": controlPlaneTolerations,
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"nodeSelector": controlPlaneNodeSelector,
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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": controlPlaneTolerations,
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"webhook": map[string]any{
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"tolerations": controlPlaneTolerations,
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},
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"cainjector": map[string]any{
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"tolerations": controlPlaneTolerations,
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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": controlPlaneTolerations,
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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 {
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return 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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"csp": i.csp.String(),
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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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"tags": i.cspTags(),
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}
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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 {
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return 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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"image": i.ccmImage,
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},
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"cnm": map[string]any{
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"image": i.azureCNMImage,
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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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"tags": i.cspTags(),
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}
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}
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func (i *chartLoader) loadCSIValues() map[string]any {
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return map[string]any{
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"tags": i.cspTags(),
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}
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}
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func (i *chartLoader) cspTags() map[string]any {
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return map[string]any{
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i.csp.String(): true,
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}
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}
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// updateVersions changes all versions of direct dependencies that are set to "0.0.0" to newVersion.
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func updateVersions(chart *chart.Chart, newVersion semver.Semver) {
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chart.Metadata.Version = newVersion.String()
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selectedDeps := chart.Metadata.Dependencies
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for i := range selectedDeps {
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if selectedDeps[i].Version == "0.0.0" {
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selectedDeps[i].Version = newVersion.String()
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}
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}
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deps := chart.Dependencies()
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for i := range deps {
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if deps[i].Metadata.Version == "0.0.0" {
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deps[i].Metadata.Version = newVersion.String()
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}
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}
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}
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// taken from loader.LoadDir from the helm go module
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// loadChartsDir loads from a directory.
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//
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// This loads charts only from directories.
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// IMPORTANT: .helmignore rules specifying files in subdirectories are not applied (e.g. crds/kustomization.yaml).
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func loadChartsDir(efs embed.FS, dir string) (*chart.Chart, error) {
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utf8bom := []byte{0xEF, 0xBB, 0xBF}
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// Just used for errors.
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c := &chart.Chart{}
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rules := ignore.Empty()
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ifile, err := efs.ReadFile(filepath.Join(dir, ignore.HelmIgnore))
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if err == nil {
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r, err := ignore.Parse(bytes.NewReader(ifile))
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if err != nil {
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return c, err
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}
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rules = r
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}
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rules.AddDefaults()
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files := []*loader.BufferedFile{}
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walk := func(path string, d fs.DirEntry, err error) error {
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n := strings.TrimPrefix(path, dir)
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if n == "" {
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// No need to process top level. Avoid bug with helmignore .* matching
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// empty names. See issue https://github.com/kubernetes/helm/issues/1776.
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return nil
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}
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// Normalize to / since it will also work on Windows
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n = filepath.ToSlash(n)
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// Check input err
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if err != nil {
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return err
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}
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fi, err := d.Info()
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if err != nil {
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return err
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}
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if d.IsDir() {
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// Directory-based ignore rules should involve skipping the entire
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// contents of that directory.
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if rules.Ignore(n, fi) {
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return filepath.SkipDir
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}
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return nil
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}
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// If a .helmignore file matches, skip this file.
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if rules.Ignore(n, fi) {
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return nil
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}
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// Irregular files include devices, sockets, and other uses of files that
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// are not regular files. In Go they have a file mode type bit set.
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// See https://golang.org/pkg/os/#FileMode for examples.
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if !fi.Mode().IsRegular() {
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return fmt.Errorf("cannot load irregular file %s as it has file mode type bits set", path)
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}
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data, err := efs.ReadFile(path)
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if err != nil {
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return errors.Wrapf(err, "error reading %s", n)
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}
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data = bytes.TrimPrefix(data, utf8bom)
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n = strings.TrimPrefix(n, "/")
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files = append(files, &loader.BufferedFile{Name: n, Data: data})
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return nil
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}
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if err := fs.WalkDir(efs, dir, walk); err != nil {
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return c, err
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}
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return loader.LoadFiles(files)
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}
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