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render.go
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render.go
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package render
import (
"fmt"
"os"
"path/filepath"
"github.com/pkg/errors"
kotsv1beta1 "github.com/replicatedhq/kots/kotskinds/apis/kots/v1beta1"
downstreamtypes "github.com/replicatedhq/kots/pkg/api/downstream/types"
apptypes "github.com/replicatedhq/kots/pkg/app/types"
"github.com/replicatedhq/kots/pkg/crypto"
"github.com/replicatedhq/kots/pkg/kotsutil"
registrytypes "github.com/replicatedhq/kots/pkg/registry/types"
"github.com/replicatedhq/kots/pkg/reporting"
"github.com/replicatedhq/kots/pkg/rewrite"
"github.com/replicatedhq/kots/pkg/template"
"github.com/replicatedhq/kots/pkg/util"
)
type Renderer struct {
}
// RenderFile renders a single file
// this is useful for upstream/kotskinds files that are not rendered in the dir
func (r Renderer) RenderFile(kotsKinds *kotsutil.KotsKinds, registrySettings registrytypes.RegistrySettings, appSlug string, sequence int64, isAirgap bool, namespace string, inputContent []byte) ([]byte, error) {
return RenderFile(kotsKinds, registrySettings, appSlug, sequence, isAirgap, namespace, inputContent)
}
func RenderFile(kotsKinds *kotsutil.KotsKinds, registrySettings registrytypes.RegistrySettings, appSlug string, sequence int64, isAirgap bool, namespace string, inputContent []byte) ([]byte, error) {
fixedUpContent, err := kotsutil.FixUpYAML(inputContent)
if err != nil {
return nil, errors.Wrap(err, "failed to fix up yaml")
}
return RenderContent(kotsKinds, registrySettings, appSlug, sequence, isAirgap, namespace, fixedUpContent)
}
// RenderContent renders any string/content
// this is useful for rendering single values, like a status informer
func RenderContent(kotsKinds *kotsutil.KotsKinds, registrySettings registrytypes.RegistrySettings, appSlug string, sequence int64, isAirgap bool, namespace string, inputContent []byte) ([]byte, error) {
builder, err := NewBuilder(kotsKinds, registrySettings, appSlug, sequence, isAirgap, namespace)
if err != nil {
return nil, errors.Wrap(err, "failed to create builder")
}
rendered, err := builder.RenderTemplate(string(inputContent), string(inputContent))
if err != nil {
return nil, errors.Wrap(err, "failed to render")
}
return []byte(rendered), nil
}
func NewBuilder(kotsKinds *kotsutil.KotsKinds, registrySettings registrytypes.RegistrySettings, appSlug string, sequence int64, isAirgap bool, namespace string) (*template.Builder, error) {
localRegistry := template.LocalRegistry{
Host: registrySettings.Hostname,
Namespace: registrySettings.Namespace,
Username: registrySettings.Username,
Password: registrySettings.Password,
ReadOnly: registrySettings.IsReadOnly,
}
templateContextValues := make(map[string]template.ItemValue)
if kotsKinds.ConfigValues != nil {
for k, v := range kotsKinds.ConfigValues.Spec.Values {
templateContextValues[k] = template.ItemValue{
Value: v.Value,
Default: v.Default,
}
}
}
err := crypto.InitFromString(kotsKinds.Installation.Spec.EncryptionKey)
if err != nil {
return nil, errors.Wrap(err, "failed to load encryption cipher")
}
configGroups := []kotsv1beta1.ConfigGroup{}
if kotsKinds.Config != nil && kotsKinds.Config.Spec.Groups != nil {
configGroups = kotsKinds.Config.Spec.Groups
}
appInfo := template.ApplicationInfo{
Slug: appSlug,
}
versionInfo := template.VersionInfoFromInstallation(sequence, isAirgap, kotsKinds.Installation.Spec)
builderOptions := template.BuilderOptions{
ConfigGroups: configGroups,
ExistingValues: templateContextValues,
LocalRegistry: localRegistry,
License: kotsKinds.License,
Application: &kotsKinds.KotsApplication,
ApplicationInfo: &appInfo,
VersionInfo: &versionInfo,
IdentityConfig: kotsKinds.IdentityConfig,
Namespace: namespace,
DecryptValues: true,
}
builder, _, err := template.NewBuilder(builderOptions)
return &builder, errors.Wrap(err, "failed to create builder")
}
// RenderDir renders an app archive dir
// this is useful for when the license/config have updated, and template functions need to be evaluated again
func (r Renderer) RenderDir(archiveDir string, a *apptypes.App, downstreams []downstreamtypes.Downstream, registrySettings registrytypes.RegistrySettings, sequence int64) error {
return RenderDir(archiveDir, a, downstreams, registrySettings, sequence)
}
func RenderDir(archiveDir string, a *apptypes.App, downstreams []downstreamtypes.Downstream, registrySettings registrytypes.RegistrySettings, sequence int64) error {
installation, err := kotsutil.LoadInstallationFromPath(filepath.Join(archiveDir, "upstream", "userdata", "installation.yaml"))
if err != nil {
return errors.Wrap(err, "failed to load installation from path")
}
license, err := kotsutil.LoadLicenseFromPath(filepath.Join(archiveDir, "upstream", "userdata", "license.yaml"))
if err != nil {
return errors.Wrap(err, "failed to load license from path")
}
configValues, err := kotsutil.LoadConfigValuesFromFile(filepath.Join(archiveDir, "upstream", "userdata", "config.yaml"))
if err != nil && !os.IsNotExist(errors.Cause(err)) {
return errors.Wrap(err, "failed to load config values from path")
}
downstreamNames := []string{}
for _, d := range downstreams {
downstreamNames = append(downstreamNames, d.Name)
}
appNamespace := util.PodNamespace
if os.Getenv("KOTSADM_TARGET_NAMESPACE") != "" {
appNamespace = os.Getenv("KOTSADM_TARGET_NAMESPACE")
}
reOptions := rewrite.RewriteOptions{
RootDir: archiveDir,
UpstreamURI: fmt.Sprintf("replicated://%s", license.Spec.AppSlug),
UpstreamPath: filepath.Join(archiveDir, "upstream"),
Installation: installation,
Downstreams: downstreamNames,
Silent: true,
CreateAppDir: false,
ExcludeKotsKinds: true,
License: license,
ConfigValues: configValues,
K8sNamespace: appNamespace,
CopyImages: false,
IsAirgap: a.IsAirgap,
AppID: a.ID,
AppSlug: a.Slug,
IsGitOps: a.IsGitOps,
AppSequence: sequence,
ReportingInfo: reporting.GetReportingInfo(a.ID),
RegistryEndpoint: registrySettings.Hostname,
RegistryNamespace: registrySettings.Namespace,
RegistryUsername: registrySettings.Username,
RegistryPassword: registrySettings.Password,
RegistryIsReadOnly: registrySettings.IsReadOnly,
// TODO: pass in as arguments if this is ever called from CLI
HTTPProxyEnvValue: os.Getenv("HTTP_PROXY"),
HTTPSProxyEnvValue: os.Getenv("HTTPS_PROXY"),
NoProxyEnvValue: os.Getenv("NO_PROXY"),
}
err = rewrite.Rewrite(reOptions)
if err != nil {
return errors.Wrap(err, "rewrite directory")
}
return nil
}