/
cluster.go
268 lines (247 loc) · 9.58 KB
/
cluster.go
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package plugins
import (
"context"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/pkg/errors"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
corev1alpha2 "github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
"github.com/oam-dev/kubevela/apis/types"
util2 "github.com/oam-dev/kubevela/pkg/commands/util"
"github.com/oam-dev/kubevela/pkg/cue"
"github.com/oam-dev/kubevela/pkg/oam/discoverymapper"
"github.com/oam-dev/kubevela/pkg/oam/util"
"github.com/oam-dev/kubevela/pkg/utils/common"
"github.com/oam-dev/kubevela/pkg/utils/helm"
"github.com/oam-dev/kubevela/pkg/utils/system"
)
// DescriptionUndefined indicates the description is not defined
const DescriptionUndefined = "description not defined"
// GetCapabilitiesFromCluster will get capability from K8s cluster
func GetCapabilitiesFromCluster(ctx context.Context, namespace string, c types.Args, syncDir string, selector labels.Selector) ([]types.Capability, error) {
workloads, _, err := GetWorkloadsFromCluster(ctx, namespace, c, syncDir, selector)
if err != nil {
return nil, err
}
traits, _, err := GetTraitsFromCluster(ctx, namespace, c, syncDir, selector)
if err != nil {
return nil, err
}
workloads = append(workloads, traits...)
return workloads, nil
}
// GetWorkloadsFromCluster will get capability from K8s cluster
func GetWorkloadsFromCluster(ctx context.Context, namespace string, c types.Args, syncDir string, selector labels.Selector) ([]types.Capability, []error, error) {
newClient, err := client.New(c.Config, client.Options{Scheme: c.Schema})
if err != nil {
return nil, nil, err
}
dm, err := discoverymapper.New(c.Config)
if err != nil {
return nil, nil, err
}
var templates []types.Capability
var workloadDefs corev1alpha2.WorkloadDefinitionList
err = newClient.List(ctx, &workloadDefs, &client.ListOptions{Namespace: namespace, LabelSelector: selector})
if err != nil {
return nil, nil, fmt.Errorf("list WorkloadDefinition err: %w", err)
}
var templateErrors []error
for _, wd := range workloadDefs.Items {
tmp, err := HandleDefinition(wd.Name, syncDir, wd.Spec.Reference.Name, wd.Annotations, wd.Spec.Extension, types.TypeWorkload, nil, wd.Spec.Schematic)
if err != nil {
templateErrors = append(templateErrors, errors.Wrapf(err, "handle workload template `%s` failed", wd.Name))
continue
}
if tmp, err = validateCapabilities(tmp, dm, wd.Name, wd.Spec.Reference); err != nil {
return nil, nil, err
}
templates = append(templates, tmp)
}
return templates, templateErrors, nil
}
// GetTraitsFromCluster will get capability from K8s cluster
func GetTraitsFromCluster(ctx context.Context, namespace string, c types.Args, syncDir string, selector labels.Selector) ([]types.Capability, []error, error) {
newClient, err := client.New(c.Config, client.Options{Scheme: c.Schema})
if err != nil {
return nil, nil, err
}
dm, err := discoverymapper.New(c.Config)
if err != nil {
return nil, nil, err
}
var templates []types.Capability
var traitDefs corev1alpha2.TraitDefinitionList
err = newClient.List(ctx, &traitDefs, &client.ListOptions{Namespace: namespace, LabelSelector: selector})
if err != nil {
return nil, nil, fmt.Errorf("list TraitDefinition err: %w", err)
}
var templateErrors []error
for _, td := range traitDefs.Items {
tmp, err := HandleDefinition(td.Name, syncDir, td.Spec.Reference.Name, td.Annotations, td.Spec.Extension, types.TypeTrait, td.Spec.AppliesToWorkloads, td.Spec.Schematic)
if err != nil {
templateErrors = append(templateErrors, errors.Wrapf(err, "handle trait template `%s` failed", td.Name))
continue
}
if tmp, err = validateCapabilities(tmp, dm, td.Name, td.Spec.Reference); err != nil {
return nil, nil, err
}
templates = append(templates, tmp)
}
return templates, templateErrors, nil
}
// validateCapabilities validates whether helm charts are successful installed, GVK are successfully retrieved.
func validateCapabilities(tmp types.Capability, dm discoverymapper.DiscoveryMapper, definitionName string, reference corev1alpha2.DefinitionReference) (types.Capability, error) {
var err error
if tmp.Install != nil {
tmp.Source = &types.Source{ChartName: tmp.Install.Helm.Name}
ioStream := util2.IOStreams{In: os.Stdin, Out: os.Stdout, ErrOut: os.Stderr}
if err = helm.InstallHelmChart(ioStream, tmp.Install.Helm); err != nil {
return tmp, fmt.Errorf("unable to install helm chart dependency %s(%s from %s) for this trait '%s': %w ", tmp.Install.Helm.Name, tmp.Install.Helm.Version, tmp.Install.Helm.URL, definitionName, err)
}
}
gvk, err := util.GetGVKFromDefinition(dm, reference)
if err != nil {
errMsg := err.Error()
var substr = "no matches for "
if strings.Contains(errMsg, substr) {
err = fmt.Errorf("expected provider: %s", strings.Split(errMsg, substr)[1])
}
return tmp, fmt.Errorf("installing capability '%s'... %w", definitionName, err)
}
tmp.CrdInfo = &types.CRDInfo{
APIVersion: gvk.GroupVersion().String(),
Kind: gvk.Kind,
}
return tmp, nil
}
// HandleDefinition will handle definition to capability
func HandleDefinition(name, syncDir, crdName string, annotation map[string]string, extension *runtime.RawExtension, tp types.CapType, applyTo []string, schematic *corev1alpha2.Schematic) (types.Capability, error) {
var tmp types.Capability
tmp, err := HandleTemplate(extension, schematic, name, syncDir)
if err != nil {
return types.Capability{}, err
}
tmp.Type = tp
if tp == types.TypeTrait {
tmp.AppliesTo = applyTo
}
tmp.CrdName = crdName
tmp.Description = GetDescription(annotation)
return tmp, nil
}
// GetDescription get description from annotation
func GetDescription(annotation map[string]string) string {
if annotation == nil {
return DescriptionUndefined
}
desc, ok := annotation[types.AnnDescription]
if !ok {
return DescriptionUndefined
}
return desc
}
// HandleTemplate will handle definition template to capability
func HandleTemplate(in *runtime.RawExtension, schematic *corev1alpha2.Schematic, name, syncDir string) (types.Capability, error) {
tmp, err := util.ConvertTemplateJSON2Object(in, schematic)
if err != nil {
return types.Capability{}, err
}
tmp.Name = name
// if spec.template is not empty it should has the highest priority
if schematic != nil && schematic.CUE != nil {
tmp.CueTemplate = schematic.CUE.Template
tmp.CueTemplateURI = ""
}
if tmp.CueTemplateURI != "" {
b, err := common.HTTPGet(context.Background(), tmp.CueTemplateURI)
if err != nil {
return types.Capability{}, err
}
tmp.CueTemplate = string(b)
}
if tmp.CueTemplate == "" {
return types.Capability{}, errors.New("template not exist in definition")
}
_, _ = system.CreateIfNotExist(syncDir)
filePath := filepath.Join(syncDir, name+".cue")
//nolint:gosec
err = ioutil.WriteFile(filePath, []byte(tmp.CueTemplate), 0644)
if err != nil {
return types.Capability{}, err
}
tmp.DefinitionPath = filePath
tmp.Parameters, err = cue.GetParameters(filePath)
if err != nil {
return types.Capability{}, err
}
return tmp, nil
}
// SyncDefinitionsToLocal sync definitions to local
func SyncDefinitionsToLocal(ctx context.Context, c types.Args, localDefinitionDir string) ([]types.Capability, []string, error) {
var syncedTemplates []types.Capability
var warnings []string
templates, templateErrors, err := GetWorkloadsFromCluster(ctx, types.DefaultKubeVelaNS, c, localDefinitionDir, nil)
if err != nil {
return nil, nil, err
}
if len(templateErrors) > 0 {
for _, e := range templateErrors {
warnings = append(warnings, fmt.Sprintf("WARN: %v, you will unable to use this workload capability\n", e))
}
}
syncedTemplates = append(syncedTemplates, templates...)
SinkTemp2Local(templates, localDefinitionDir)
templates, templateErrors, err = GetTraitsFromCluster(ctx, types.DefaultKubeVelaNS, c, localDefinitionDir, nil)
if err != nil {
return nil, warnings, err
}
if len(templateErrors) > 0 {
for _, e := range templateErrors {
warnings = append(warnings, fmt.Sprintf("WARN: %v, you will unable to use this trait capability\n", e))
}
}
syncedTemplates = append(syncedTemplates, templates...)
SinkTemp2Local(templates, localDefinitionDir)
return syncedTemplates, warnings, nil
}
// SyncDefinitionToLocal sync definitions to local
func SyncDefinitionToLocal(ctx context.Context, c types.Args, localDefinitionDir string, capabilityName string) (*types.Capability, error) {
var foundCapability bool
newClient, err := client.New(c.Config, client.Options{Scheme: c.Schema})
if err != nil {
return nil, err
}
var workloadDef corev1alpha2.WorkloadDefinition
err = newClient.Get(ctx, client.ObjectKey{Namespace: types.DefaultKubeVelaNS, Name: capabilityName}, &workloadDef)
if err == nil {
// return nil, fmt.Errorf("get WorkloadDefinition err: %w", err)
foundCapability = true
}
if foundCapability {
template, err := HandleDefinition(capabilityName, localDefinitionDir, workloadDef.Spec.Reference.Name,
workloadDef.Annotations, workloadDef.Spec.Extension, types.TypeWorkload, nil, workloadDef.Spec.Schematic)
if err == nil {
return &template, nil
}
}
foundCapability = false
var traitDef corev1alpha2.TraitDefinition
err = newClient.Get(ctx, client.ObjectKey{Namespace: types.DefaultKubeVelaNS, Name: capabilityName}, &traitDef)
if err == nil {
foundCapability = true
}
if foundCapability {
template, err := HandleDefinition(capabilityName, localDefinitionDir, traitDef.Spec.Reference.Name,
traitDef.Annotations, traitDef.Spec.Extension, types.TypeTrait, nil, workloadDef.Spec.Schematic)
if err == nil {
return &template, nil
}
}
return nil, fmt.Errorf("%s is not a valid workload type or trait", capabilityName)
}