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render.go
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render.go
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package state
import (
"fmt"
"path/filepath"
"reflect"
"strings"
"github.com/riser-platform/riser-server/pkg/state/resources"
"github.com/pkg/errors"
"github.com/riser-platform/riser-server/pkg/core"
"github.com/riser-platform/riser-server/pkg/util"
)
type getResourcePathFunc func(resource KubeResource) string
func RenderDeleteDeployment(deploymentName, namespace, environmentName string) []core.ResourceFile {
return []core.ResourceFile{
{
Name: getDeploymentScmDir(deploymentName, namespace, environmentName),
Delete: true,
},
{
Name: getAppConfigScmPath(deploymentName, namespace, environmentName),
Delete: true,
},
}
}
// RenderGeneric is used for generic resources (e.g. riser app namespaces). They will be placed in the root of the namespaced folder.
func RenderGeneric(environmentName string, resources ...KubeResource) ([]core.ResourceFile, error) {
return renderKubeResources(func(resource KubeResource) string {
return getGenericStatePath(environmentName, resource)
}, resources...)
}
func RenderSealedSecret(app, environmentName string, sealedSecret *resources.SealedSecret) ([]core.ResourceFile, error) {
return renderKubeResources(func(resource KubeResource) string {
return getSecretScmPath(app, environmentName, sealedSecret)
}, sealedSecret)
}
// RenderDeployment renders resources that target a deployment's git folder
func RenderDeployment(deployment *core.DeploymentConfig, deploymentResources ...KubeResource) ([]core.ResourceFile, error) {
files, err := renderKubeResources(func(resource KubeResource) string {
return getDeploymentScmPath(deployment.Name, deployment.Namespace, deployment.EnvironmentName, resource)
}, filterNilResources(deploymentResources...)...)
if err != nil {
return nil, err
}
appConfigFile, err := renderAppConfig(deployment)
if err != nil {
return nil, err
}
files = append(files, *appConfigFile)
return files, nil
}
// RenderRoute renders just the route resource.
func RenderRoute(deploymentName, namespace, environmentName string, resource KubeResource) ([]core.ResourceFile, error) {
files, err := renderKubeResources(func(resource KubeResource) string {
return getDeploymentScmPath(deploymentName, namespace, environmentName, resource)
}, resource)
if err != nil {
return nil, err
}
return files, nil
}
func renderAppConfig(deployment *core.DeploymentConfig) (*core.ResourceFile, error) {
serialized, err := util.ToYaml(deployment.App)
if err != nil {
return nil, errors.Wrap(err, "Error serializing app config")
}
return &core.ResourceFile{
Name: getAppConfigScmPath(deployment.Name, deployment.Namespace, deployment.EnvironmentName),
Contents: serialized,
}, nil
}
func renderKubeResources(pathFunc getResourcePathFunc, resources ...KubeResource) ([]core.ResourceFile, error) {
files := []core.ResourceFile{}
for _, resource := range resources {
serialized, err := util.ToYaml(resource)
if err != nil {
return nil, errors.Wrap(err, fmt.Sprintf("Error serializing resource %q", resource.GetObjectKind()))
}
files = append(files, core.ResourceFile{
Name: pathFunc(resource),
Contents: serialized,
})
}
return files, nil
}
func getDeploymentScmDir(deploymentName, namespace, environmentName string) string {
return strings.ToLower(filepath.Join(getRiserManagedStatePath(environmentName),
namespace,
"deployments",
deploymentName))
}
func getDeploymentScmPath(deploymentName, namespace, environmentName string, resource KubeResource) string {
return strings.ToLower(filepath.Join(
getDeploymentScmDir(deploymentName, namespace, environmentName),
getFileNameFromResource(resource)))
}
func getSecretScmPath(app string, environmentName string, sealedSecret KubeResource) string {
return strings.ToLower(filepath.Join(
getRiserManagedStatePath(environmentName),
sealedSecret.GetNamespace(),
"secrets",
app,
getFileNameFromResource(sealedSecret)))
}
func getAppConfigScmPath(deploymentName, namespace, environmentName string) string {
return strings.ToLower(filepath.Join(
"riser-config",
environmentName,
namespace,
fmt.Sprintf("%s.yaml", deploymentName)))
}
func getRiserManagedStatePath(envName string) string {
return strings.ToLower(filepath.Join(
"state",
envName,
"riser-managed",
))
}
func getGenericStatePath(envName string, resource KubeResource) string {
return strings.ToLower(filepath.Join(
getRiserManagedStatePath(envName),
resource.GetNamespace(),
getFileNameFromResource(resource),
))
}
func getFileNameFromResource(resource KubeResource) string {
group := resource.GetObjectKind().GroupVersionKind().GroupVersion().Group
if group == "" {
return strings.ToLower(fmt.Sprintf("%s.%s.yaml", resource.GetObjectKind().GroupVersionKind().Kind, resource.GetName()))
}
return strings.ToLower(fmt.Sprintf("%s.%s.%s.yaml", group, resource.GetObjectKind().GroupVersionKind().Kind, resource.GetName()))
}
// TODO: Consider refactoring the KubeResource interface or adding another type to determine if a resource should be rendered or not
// instead of using nil
func filterNilResources(in ...KubeResource) []KubeResource {
out := []KubeResource{}
for _, r := range in {
if r == nil || reflect.ValueOf(r).IsNil() {
continue
}
out = append(out, r)
}
return out
}