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replicated.go
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replicated.go
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package base
import (
"archive/tar"
"bytes"
"compress/gzip"
"fmt"
"io"
"io/ioutil"
"os"
"path"
"strconv"
"strings"
"github.com/pkg/errors"
kotsv1beta1 "github.com/replicatedhq/kots/kotskinds/apis/kots/v1beta1"
kotsscheme "github.com/replicatedhq/kots/kotskinds/client/kotsclientset/scheme"
kotsconfig "github.com/replicatedhq/kots/pkg/config"
"github.com/replicatedhq/kots/pkg/kotsutil"
"github.com/replicatedhq/kots/pkg/logger"
"github.com/replicatedhq/kots/pkg/template"
upstreamtypes "github.com/replicatedhq/kots/pkg/upstream/types"
"github.com/replicatedhq/kots/pkg/util"
troubleshootv1beta2 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta2"
troubleshootscheme "github.com/replicatedhq/troubleshoot/pkg/client/troubleshootclientset/scheme"
velerov1 "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
stdyaml "gopkg.in/yaml.v2"
"helm.sh/helm/v3/pkg/chart"
"k8s.io/client-go/kubernetes/scheme"
applicationv1beta1 "sigs.k8s.io/application/api/v1beta1"
"sigs.k8s.io/yaml"
)
func init() {
kotsscheme.AddToScheme(scheme.Scheme)
troubleshootscheme.AddToScheme(scheme.Scheme)
velerov1.AddToScheme(scheme.Scheme)
applicationv1beta1.AddToScheme(scheme.Scheme)
}
type Document struct {
APIVersion string `yaml:"apiVersion"`
Kind string `yaml:"kind"`
}
func renderReplicated(u *upstreamtypes.Upstream, renderOptions *RenderOptions) (*Base, []Base, error) {
commonBase := Base{
Files: []BaseFile{},
Bases: []Base{},
}
builder, itemValues, err := NewConfigContextTemplateBuilder(u, renderOptions)
if err != nil {
return nil, nil, errors.Wrap(err, "failed to create new config context template builder")
}
kotsKinds, err := getKotsKinds(u, renderOptions.Log)
if err != nil {
return nil, nil, errors.Wrap(err, "failed to find config file")
}
registry := template.LocalRegistry{
Host: renderOptions.LocalRegistryHost,
Namespace: renderOptions.LocalRegistryNamespace,
Username: renderOptions.LocalRegistryUsername,
Password: renderOptions.LocalRegistryPassword,
ReadOnly: renderOptions.LocalRegistryIsReadOnly,
}
versionInfo := template.VersionInfoFromInstallation(renderOptions.Sequence, renderOptions.IsAirgap, kotsKinds.Installation.Spec)
appInfo := template.ApplicationInfo{Slug: renderOptions.AppSlug}
renderedConfig, err := kotsconfig.TemplateConfigObjects(kotsKinds.Config, itemValues, kotsKinds.License, &kotsKinds.KotsApplication, registry, &versionInfo, &appInfo, kotsKinds.IdentityConfig, util.PodNamespace)
if err != nil {
return nil, nil, errors.Wrap(err, "failed to template config objects")
}
for _, upstreamFile := range u.Files {
if renderOptions.ExcludeKotsKinds {
// kots kinds are not expected to be valid yaml after builder.RenderTemplate
// this will prevent errors later from ShouldBeIncludedInBaseKustomization
newContent := [][]byte{}
isKotsKind := false
for _, doc := range util.ConvertToSingleDocs(upstreamFile.Content) {
file := BaseFile{Path: upstreamFile.Path, Content: doc}
// ignore the error here, we will catch it later in ShouldBeIncludedInBaseKustomization
if ok, _ := file.IsKotsKind(); ok {
isKotsKind = true
} else {
newContent = append(newContent, doc)
}
}
if isKotsKind && len(newContent) == 0 {
continue
}
upstreamFile.Content = bytes.Join(newContent, []byte("\n---\n"))
}
c, err := processVariadicConfig(&upstreamFile, renderedConfig, renderOptions.Log)
if err != nil {
return nil, nil, errors.Wrapf(err, "failed to process variadic config in file %s", upstreamFile.Path)
}
upstreamFile.Content = c
baseFile, err := upstreamFileToBaseFile(upstreamFile, *builder, renderOptions.Log)
if err != nil {
return nil, nil, errors.Wrapf(err, "failed to convert upstream file %s to base", upstreamFile.Path)
}
baseFiles := convertToSingleDocBaseFiles([]BaseFile{baseFile})
for _, f := range baseFiles {
include, err := f.ShouldBeIncludedInBaseKustomization(renderOptions.ExcludeKotsKinds)
if err != nil {
if _, ok := err.(ParseError); !ok {
return nil, nil, errors.Wrapf(err, "failed to determine if file %s should be included in base", f.Path)
}
}
if include {
commonBase.Files = append(commonBase.Files, f)
} else if err != nil {
f.Error = err
commonBase.ErrorFiles = append(commonBase.ErrorFiles, f)
}
}
}
// render helm charts that were specified
// we just inject them into u.Files
kotsHelmCharts, err := findAllKotsHelmCharts(u.Files, *builder, renderOptions.Log)
if err != nil {
return nil, nil, errors.Wrap(err, "failed to find helm charts")
}
helmBases := []Base{}
for _, kotsHelmChart := range kotsHelmCharts {
helmBase, err := renderReplicatedHelmChart(kotsHelmChart, u.Files, renderOptions, builder)
if err != nil {
return nil, nil, errors.Wrapf(err, "failed to render helm chart %s", kotsHelmChart.Name)
} else if helmBase == nil {
continue
}
renderedHelmBase, err := renderReplicatedHelmBase(u, renderOptions, *helmBase, *builder)
if err != nil {
return nil, nil, errors.Wrapf(err, "failed to render helm chart base %s", helmBase.Path)
}
if kotsHelmChart.Spec.UseHelmInstall {
helmBases = append(helmBases, extractHelmBases(*renderedHelmBase)...)
} else {
commonBase.Bases = append(commonBase.Bases, *renderedHelmBase)
}
}
return &commonBase, helmBases, nil
}
func extractHelmBases(b Base) []Base {
bases := []Base{}
for _, sub := range b.Bases {
sub.Path = path.Join(b.Path, sub.Path)
bases = append(bases, extractHelmBases(sub)...)
}
b.Bases = nil
return append([]Base{b}, bases...)
}
func renderReplicatedHelmChart(kotsHelmChart *kotsv1beta1.HelmChart, upstreamFiles []upstreamtypes.UpstreamFile, renderOptions *RenderOptions, builder *template.Builder) (*Base, error) {
if !kotsHelmChart.Spec.Exclude.IsEmpty() {
boolVal, err := kotsHelmChart.Spec.Exclude.Boolean()
if err != nil {
renderOptions.Log.Error(errors.Errorf("Kots.io/v1beta1 HelmChart %s rendered exclude is not parseable as bool, value = %s. Not excluding chart.", kotsHelmChart.Name, kotsHelmChart.Spec.Exclude.String()))
return nil, errors.Wrap(err, "failed to parse helm chart exclude")
}
if boolVal {
return nil, nil
}
}
// Include this chart
archive, err := findHelmChartArchiveInRelease(upstreamFiles, kotsHelmChart)
if err != nil {
return nil, errors.Wrap(err, "failed to find helm chart archive in release")
}
tmpFile, err := ioutil.TempFile("", "kots")
if err != nil {
return nil, errors.Wrap(err, "failed to create temp file")
}
defer os.RemoveAll(tmpFile.Name())
_, err = io.Copy(tmpFile, bytes.NewReader(archive))
if err != nil {
return nil, errors.Wrap(err, "failed to copy chart to temp file")
}
helmUpstream, err := chartArchiveToSparseUpstream(tmpFile.Name())
if err != nil {
return nil, errors.Wrap(err, "failed to fetch helm dependency")
}
helmUpstream.Name = kotsHelmChart.Name
mergedValues := kotsHelmChart.Spec.Values
for _, optionalValues := range kotsHelmChart.Spec.OptionalValues {
parsedBool, err := strconv.ParseBool(optionalValues.When)
if err != nil {
return nil, errors.Wrap(err, "failed to parse when conditional on optional values")
}
if !parsedBool {
continue
}
if optionalValues.RecursiveMerge {
mergedValues = kotsv1beta1.MergeHelmChartValues(kotsHelmChart.Spec.Values, optionalValues.Values)
} else {
for k, v := range optionalValues.Values {
mergedValues[k] = v
}
}
}
helmValues, err := kotsHelmChart.Spec.GetHelmValues(mergedValues)
if err != nil {
return nil, errors.Wrap(err, "failed to render local values for chart")
}
helmBase, err := RenderHelm(helmUpstream, &RenderOptions{
SplitMultiDocYAML: true,
Namespace: kotsHelmChart.Spec.Namespace,
HelmVersion: kotsHelmChart.Spec.HelmVersion,
HelmValues: helmValues,
ExcludeKotsKinds: renderOptions.ExcludeKotsKinds,
Log: nil,
})
if err != nil {
return nil, errors.Wrap(err, "failed to render helm chart in upstream")
}
helmBase.Path = path.Join("charts", helmUpstream.Name)
return helmBase, nil
}
func renderReplicatedHelmBase(u *upstreamtypes.Upstream, renderOptions *RenderOptions, helmBase Base, builder template.Builder) (*Base, error) {
helmBaseFiles, helmBaseYAMLErrorFiles := []BaseFile{}, []BaseFile{}
for _, helmBaseFile := range helmBase.Files {
upstreamFile := upstreamtypes.UpstreamFile{
Path: helmBaseFile.Path,
Content: helmBaseFile.Content,
}
u.Files = append(u.Files, upstreamFile)
baseFile, err := upstreamFileToBaseFile(upstreamFile, builder, renderOptions.Log)
if err != nil {
return nil, errors.Wrapf(err, "failed to convert upstream file %s to base", upstreamFile.Path)
}
// this is a little bit of an abuse of the next function
include, err := helmBaseFile.ShouldBeIncludedInBaseKustomization(false)
if err != nil {
if _, ok := err.(ParseError); !ok {
return nil, errors.Wrapf(err, "failed to determine if file %s should be included in base", upstreamFile.Path)
}
}
if include {
helmBaseFiles = append(helmBaseFiles, baseFile)
} else if err != nil {
baseFile.Error = err
helmBaseYAMLErrorFiles = append(helmBaseYAMLErrorFiles, baseFile)
}
}
helmBaseBases := []Base{}
for _, helmBase := range helmBase.Bases {
renderedHelmBase, err := renderReplicatedHelmBase(u, renderOptions, helmBase, builder)
if err != nil {
return nil, errors.Wrapf(err, "failed to render helm chart %s base", helmBase.Path)
}
helmBaseBases = append(helmBaseBases, *renderedHelmBase)
}
return &Base{
Path: helmBase.Path,
Files: helmBaseFiles,
AdditionalFiles: helmBase.AdditionalFiles,
Bases: helmBaseBases,
ErrorFiles: helmBaseYAMLErrorFiles,
}, nil
}
func upstreamFileToBaseFile(upstreamFile upstreamtypes.UpstreamFile, builder template.Builder, log *logger.CLILogger) (BaseFile, error) {
rendered, err := builder.RenderTemplate(upstreamFile.Path, string(upstreamFile.Content))
if err != nil {
log.Error(errors.Errorf("Failed to render file %s. Contents are %s", upstreamFile.Path, upstreamFile.Content))
return BaseFile{}, errors.Wrap(err, "failed to render file template")
}
return BaseFile{
Path: upstreamFile.Path,
Content: []byte(rendered),
}, nil
}
func findAllKotsHelmCharts(upstreamFiles []upstreamtypes.UpstreamFile, builder template.Builder, log *logger.CLILogger) ([]*kotsv1beta1.HelmChart, error) {
kotsHelmCharts := []*kotsv1beta1.HelmChart{}
for _, upstreamFile := range upstreamFiles {
if !isHelmChartKind(upstreamFile.Content) {
continue
}
baseFile, err := upstreamFileToBaseFile(upstreamFile, builder, log)
if err != nil {
continue
}
helmChart, err := parseHelmChart(baseFile.Content)
if err != nil {
return nil, errors.Wrapf(err, "failed to parse rendered HelmChart %s", baseFile.Path)
}
kotsHelmCharts = append(kotsHelmCharts, helmChart)
}
return kotsHelmCharts, nil
}
func parseHelmChart(content []byte) (*kotsv1beta1.HelmChart, error) {
decode := scheme.Codecs.UniversalDeserializer().Decode
obj, gvk, err := decode(content, nil, nil)
if err != nil {
return nil, errors.Wrap(err, "failed to decode chart")
}
if gvk.Group == "kots.io" {
if gvk.Version == "v1beta1" {
if gvk.Kind == "HelmChart" {
return obj.(*kotsv1beta1.HelmChart), nil
}
}
}
return nil, errors.Errorf("not a HelmChart GVK: %s", gvk.String())
}
func isHelmChartKind(content []byte) bool {
gvk := OverlySimpleGVK{}
if err := stdyaml.Unmarshal(content, &gvk); err != nil {
return false
}
if gvk.APIVersion == "kots.io/v1beta1" && gvk.Kind == "HelmChart" {
return true
}
return false
}
func tryGetConfigFromFileContent(content []byte, log *logger.CLILogger) *kotsv1beta1.Config {
decode := scheme.Codecs.UniversalDeserializer().Decode
obj, gvk, err := decode(content, nil, nil)
if err != nil {
log.Debug("Failed to parse file while looking for config: %v", err)
return nil
}
if gvk.Group == "kots.io" && gvk.Version == "v1beta1" && gvk.Kind == "Config" {
return obj.(*kotsv1beta1.Config)
}
return nil
}
func getKotsKinds(u *upstreamtypes.Upstream, log *logger.CLILogger) (*kotsutil.KotsKinds, error) {
kotsKinds := &kotsutil.KotsKinds{}
for _, file := range u.Files {
document := &Document{}
if err := yaml.Unmarshal(file.Content, document); err != nil {
continue
}
decode := scheme.Codecs.UniversalDeserializer().Decode
decoded, gvk, err := decode(file.Content, nil, nil)
if err != nil {
if document.APIVersion == "kots.io/v1beta1" && (document.Kind == "Config" || document.Kind == "License") {
errMessage := fmt.Sprintf("Failed to decode %s", file.Path)
return nil, errors.Wrap(err, errMessage)
}
continue
}
switch gvk.String() {
case "kots.io/v1beta1, Kind=Config":
kotsKinds.Config = decoded.(*kotsv1beta1.Config)
case "kots.io/v1beta1, Kind=ConfigValues":
kotsKinds.ConfigValues = decoded.(*kotsv1beta1.ConfigValues)
case "kots.io/v1beta1, Kind=Application":
kotsKinds.KotsApplication = *decoded.(*kotsv1beta1.Application)
case "kots.io/v1beta1, Kind=License":
kotsKinds.License = decoded.(*kotsv1beta1.License)
case "kots.io/v1beta1, Kind=Identity":
kotsKinds.Identity = decoded.(*kotsv1beta1.Identity)
case "kots.io/v1beta1, Kind=IdentityConfig":
kotsKinds.IdentityConfig = decoded.(*kotsv1beta1.IdentityConfig)
case "kots.io/v1beta1, Kind=Installation":
kotsKinds.Installation = *decoded.(*kotsv1beta1.Installation)
case "troubleshoot.sh/v1beta2, Kind=Collector":
kotsKinds.Collector = decoded.(*troubleshootv1beta2.Collector)
case "troubleshoot.sh/v1beta2, Kind=Analyzer":
kotsKinds.Analyzer = decoded.(*troubleshootv1beta2.Analyzer)
case "troubleshoot.sh/v1beta2, Kind=SupportBundle":
kotsKinds.SupportBundle = decoded.(*troubleshootv1beta2.SupportBundle)
case "troubleshoot.sh/v1beta2, Kind=Redactor":
kotsKinds.Redactor = decoded.(*troubleshootv1beta2.Redactor)
case "troubleshoot.sh/v1beta2, Kind=Preflight":
kotsKinds.Preflight = decoded.(*troubleshootv1beta2.Preflight)
case "velero.io/v1, Kind=Backup":
kotsKinds.Backup = decoded.(*velerov1.Backup)
case "app.k8s.io/v1beta1, Kind=Application":
kotsKinds.Application = decoded.(*applicationv1beta1.Application)
}
}
return kotsKinds, nil
}
// findHelmChartArchiveInRelease iterates through all files in the release (upstreamFiles), looking for a helm chart archive
// that matches the chart name and version specified in the kotsHelmChart parameter
func findHelmChartArchiveInRelease(upstreamFiles []upstreamtypes.UpstreamFile, kotsHelmChart *kotsv1beta1.HelmChart) ([]byte, error) {
for _, upstreamFile := range upstreamFiles {
if !isHelmChart(upstreamFile.Content) {
continue
}
// We treat all .tar.gz archives as helm charts
chartArchivePath, err := ioutil.TempFile("", "chart")
if err != nil {
return nil, errors.Wrap(err, "failed to create temp file for chart archive path")
}
defer os.Remove(chartArchivePath.Name())
_, err = io.Copy(chartArchivePath, bytes.NewReader(upstreamFile.Content))
if err != nil {
return nil, errors.Wrap(err, "failed to copy maybe chart to tmp file")
}
files, err := readTarGz(chartArchivePath.Name())
if err != nil {
return nil, errors.Wrap(err, "failed to read chart archive")
}
for _, chartFile := range files {
if chartFile.Path == "Chart.yaml" {
chartManifest := new(chart.Metadata)
if err := yaml.Unmarshal(chartFile.Content, chartManifest); err != nil {
return nil, errors.Wrap(err, "failed to unmarshal chart yaml")
}
if chartManifest.Name == kotsHelmChart.Spec.Chart.Name {
if chartManifest.Version == kotsHelmChart.Spec.Chart.ChartVersion {
return upstreamFile.Content, nil
}
}
}
}
}
return nil, errors.Errorf("unable to find helm chart archive for chart name %s, version %s", kotsHelmChart.Spec.Chart.Name, kotsHelmChart.Spec.Chart.ChartVersion)
}
func isHelmChart(data []byte) bool {
gzReader, err := gzip.NewReader(bytes.NewReader(data))
if err != nil {
return false
}
gzReader.Close()
return true
}
func readTarGz(source string) ([]upstreamtypes.UpstreamFile, error) {
f, err := os.Open(source)
if err != nil {
return nil, errors.Wrap(err, "failed to open archive")
}
defer f.Close()
gzf, err := gzip.NewReader(f)
if err != nil {
return nil, errors.Wrap(err, "failed to create gzip reader")
}
tarReader := tar.NewReader(gzf)
upstreamFiles := []upstreamtypes.UpstreamFile{}
for {
header, err := tarReader.Next()
if err == io.EOF {
break
}
if err != nil {
return nil, errors.Wrap(err, "failed to advance in tar archive")
}
name := header.Name
switch header.Typeflag {
case tar.TypeReg:
buf := new(bytes.Buffer)
_, err = buf.ReadFrom(tarReader)
if err != nil {
return nil, errors.Wrap(err, "failed to read file from tar archive")
}
upstreamFile := upstreamtypes.UpstreamFile{
Path: name,
Content: buf.Bytes(),
}
upstreamFiles = append(upstreamFiles, upstreamFile)
default:
continue
}
}
// remove any common prefix from all files
if len(upstreamFiles) > 0 {
firstFileDir, _ := path.Split(upstreamFiles[0].Path)
commonPrefix := strings.Split(firstFileDir, string(os.PathSeparator))
for _, file := range upstreamFiles {
d, _ := path.Split(file.Path)
dirs := strings.Split(d, string(os.PathSeparator))
commonPrefix = util.CommonSlicePrefix(commonPrefix, dirs)
}
cleanedUpstreamFiles := []upstreamtypes.UpstreamFile{}
for _, file := range upstreamFiles {
d, f := path.Split(file.Path)
d2 := strings.Split(d, string(os.PathSeparator))
cleanedUpstreamFile := file
d2 = d2[len(commonPrefix):]
cleanedUpstreamFile.Path = path.Join(path.Join(d2...), f)
cleanedUpstreamFiles = append(cleanedUpstreamFiles, cleanedUpstreamFile)
}
upstreamFiles = cleanedUpstreamFiles
}
return upstreamFiles, nil
}
func chartArchiveToSparseUpstream(chartArchivePath string) (*upstreamtypes.Upstream, error) {
files, err := readTarGz(chartArchivePath)
if err != nil {
return nil, errors.Wrap(err, "failed to read chart archive")
}
upstream := &upstreamtypes.Upstream{
Type: "helm",
Files: files,
}
return upstream, nil
}
func removeFileFromUpstream(files []upstreamtypes.UpstreamFile, path string) []upstreamtypes.UpstreamFile {
for index, file := range files {
if file.Path == path {
files[index] = files[len(files)-1]
files[len(files)-1] = upstreamtypes.UpstreamFile{}
return files[:len(files)-1]
}
}
return files
}