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resources.go
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resources.go
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package support_archive
import (
"bytes"
"context"
"fmt"
"strings"
"github.com/go-logr/logr"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/yaml"
)
const k8sResourceCollectorName = "k8sResourceCollector"
type k8sResourceCollector struct {
collectorCommon
context context.Context
namespace string
appName string
apiReader client.Reader
}
func newK8sObjectCollector(context context.Context, log logr.Logger, supportArchive archiver, namespace string, appName string, apiReader client.Reader) collector { //nolint:revive // argument-limit doesn't apply to constructors
return k8sResourceCollector{
collectorCommon: collectorCommon{
log: log,
supportArchive: supportArchive,
},
context: context,
namespace: namespace,
appName: appName,
apiReader: apiReader,
}
}
func (collector k8sResourceCollector) Do() error {
logInfof(collector.log, "Starting K8S resource collection")
for _, query := range getQueries(collector.namespace, collector.appName) {
resourceList, err := collector.readObjectsList(query.groupVersionKind, query.filters)
if err != nil {
logErrorf(collector.log, err, "could not get manifest for %s", query.groupVersionKind.String())
continue
}
for _, resource := range resourceList.Items {
collector.storeObject(resource)
}
}
return nil
}
func (collector k8sResourceCollector) Name() string {
return k8sResourceCollectorName
}
func (collector k8sResourceCollector) readObjectsList(groupVersionKind schema.GroupVersionKind, listOptions []client.ListOption) (*unstructured.UnstructuredList, error) {
resourceList := &unstructured.UnstructuredList{}
resourceList.SetGroupVersionKind(groupVersionKind)
err := collector.apiReader.List(collector.context, resourceList, listOptions...)
if err != nil {
return nil, err
}
return resourceList, nil
}
func (collector k8sResourceCollector) storeObject(resource unstructured.Unstructured) {
yamlManifest, err := yaml.Marshal(resource)
if err != nil {
logErrorf(collector.log, err, "Failed to marshal %s %s/%s", resource.GetKind(), collector.namespace, resource.GetName())
return
}
fileName := collector.createFileName(resource.GetKind(), resource)
err = collector.supportArchive.addFile(fileName, bytes.NewBuffer(yamlManifest))
if err != nil {
logErrorf(collector.log, err, "Failed to add %s to support archive", fileName)
return
}
logInfof(collector.log, "Collected manifest for %s", fileName)
}
func (collector k8sResourceCollector) createFileName(kind string, resourceMeta unstructured.Unstructured) string {
kind = strings.ToLower(kind)
switch {
case resourceMeta.GetNamespace() != "":
return fmt.Sprintf("%s/%s/%s/%s%s", ManifestsDirectoryName, resourceMeta.GetNamespace(), kind, resourceMeta.GetName(), ManifestsFileExtension)
case resourceMeta.GetName() == collector.namespace:
return fmt.Sprintf("%s/%s/%s-%s%s", ManifestsDirectoryName, collector.namespace, kind, resourceMeta.GetName(), ManifestsFileExtension)
default:
return fmt.Sprintf("%s/%s/%s-%s%s", ManifestsDirectoryName, InjectedNamespacesManifestsDirectoryName, kind, resourceMeta.GetName(), ManifestsFileExtension)
}
}