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multi.go
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multi.go
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package kor
import (
"bytes"
"encoding/json"
"fmt"
"os"
"strings"
apiextensionsclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"github.com/yonahd/kor/pkg/common"
"github.com/yonahd/kor/pkg/filters"
)
func retrieveNoNamespaceDiff(clientset kubernetes.Interface, apiExtClient apiextensionsclientset.Interface, dynamicClient dynamic.Interface, resourceList []string, filterOpts *filters.Options) ([]ResourceDiff, []string) {
var noNamespaceDiff []ResourceDiff
markedForRemoval := make([]bool, len(resourceList))
updatedResourceList := resourceList
for counter, resource := range resourceList {
switch resource {
case "crd", "crds", "customresourcedefinition", "customresourcedefinitions":
crdDiff := getUnusedCrds(apiExtClient, dynamicClient, filterOpts)
noNamespaceDiff = append(noNamespaceDiff, crdDiff)
markedForRemoval[counter] = true
case "pv", "persistentvolume", "persistentvolumes":
pvDiff := getUnusedPvs(clientset, filterOpts)
noNamespaceDiff = append(noNamespaceDiff, pvDiff)
markedForRemoval[counter] = true
case "clusterrole", "clusterroles":
clusterRoleDiff := getUnusedClusterRoles(clientset, filterOpts)
noNamespaceDiff = append(noNamespaceDiff, clusterRoleDiff)
markedForRemoval[counter] = true
case "sc", "storageclass", "storageclasses":
storageClassDiff := getUnusedStorageClasses(clientset, filterOpts)
noNamespaceDiff = append(noNamespaceDiff, storageClassDiff)
markedForRemoval[counter] = true
}
}
// Remove elements marked for removal
var clearedResourceList []string
for i, marked := range markedForRemoval {
if !marked {
clearedResourceList = append(clearedResourceList, updatedResourceList[i])
}
}
return noNamespaceDiff, clearedResourceList
}
func retrieveNamespaceDiffs(clientset kubernetes.Interface, namespace string, resourceList []string, filterOpts *filters.Options) []ResourceDiff {
var allDiffs []ResourceDiff
for _, resource := range resourceList {
var diffResult ResourceDiff
switch resource {
case "cm", "configmap", "configmaps":
diffResult = getUnusedCMs(clientset, namespace, filterOpts)
case "svc", "service", "services":
diffResult = getUnusedSVCs(clientset, namespace, filterOpts)
case "secret", "secrets":
diffResult = getUnusedSecrets(clientset, namespace, filterOpts)
case "sa", "serviceaccount", "serviceaccounts":
diffResult = getUnusedServiceAccounts(clientset, namespace, filterOpts)
case "deploy", "deployment", "deployments":
diffResult = getUnusedDeployments(clientset, namespace, filterOpts)
case "sts", "statefulset", "statefulsets":
diffResult = getUnusedStatefulSets(clientset, namespace, filterOpts)
case "role", "roles":
diffResult = getUnusedRoles(clientset, namespace, filterOpts)
case "hpa", "horizontalpodautoscaler", "horizontalpodautoscalers":
diffResult = getUnusedHpas(clientset, namespace, filterOpts)
case "pvc", "persistentvolumeclaim", "persistentvolumeclaims":
diffResult = getUnusedPvcs(clientset, namespace, filterOpts)
case "ing", "ingress", "ingresses":
diffResult = getUnusedIngresses(clientset, namespace, filterOpts)
case "pdb", "poddisruptionbudget", "poddisruptionbudgets":
diffResult = getUnusedPdbs(clientset, namespace, filterOpts)
case "po", "pod", "pods":
diffResult = getUnusedPods(clientset, namespace, filterOpts)
case "job", "jobs":
diffResult = getUnusedJobs(clientset, namespace, filterOpts)
case "rs", "replicaset", "replicasets":
diffResult = getUnusedReplicaSets(clientset, namespace, filterOpts)
case "ds", "daemonset", "daemonsets":
diffResult = getUnusedDaemonSets(clientset, namespace, filterOpts)
case "netpol", "networkpolicy", "networkpolicies":
diffResult = getUnusedNetworkPolicies(clientset, namespace, filterOpts)
default:
fmt.Printf("resource type %q is not supported\n", resource)
}
allDiffs = append(allDiffs, diffResult)
}
return allDiffs
}
func GetUnusedMulti(resourceNames string, filterOpts *filters.Options, clientset kubernetes.Interface, apiExtClient apiextensionsclientset.Interface, dynamicClient dynamic.Interface, outputFormat string, opts common.Opts) (string, error) {
resourceList := strings.Split(resourceNames, ",")
namespaces := filterOpts.Namespaces(clientset)
resources := make(map[string]map[string][]ResourceInfo)
var err error
if opts.GroupBy == "namespace" {
resources[""] = make(map[string][]ResourceInfo)
}
noNamespaceDiff, resourceList := retrieveNoNamespaceDiff(clientset, apiExtClient, dynamicClient, resourceList, filterOpts)
if len(noNamespaceDiff) != 0 {
for _, diff := range noNamespaceDiff {
if len(diff.diff) != 0 {
if opts.DeleteFlag {
if diff.diff, err = DeleteResource(diff.diff, clientset, "", diff.resourceType, opts.NoInteractive); err != nil {
fmt.Fprintf(os.Stderr, "Failed to delete %s %s: %v\n", diff.resourceType, diff.diff, err)
}
}
switch opts.GroupBy {
case "namespace":
resources[""][diff.resourceType] = diff.diff
case "resource":
appendResources(resources, diff.resourceType, "", diff.diff)
}
}
}
}
for _, namespace := range namespaces {
allDiffs := retrieveNamespaceDiffs(clientset, namespace, resourceList, filterOpts)
if opts.GroupBy == "namespace" {
resources[namespace] = make(map[string][]ResourceInfo)
}
for _, diff := range allDiffs {
if opts.DeleteFlag {
if diff.diff, err = DeleteResource(diff.diff, clientset, namespace, diff.resourceType, opts.NoInteractive); err != nil {
fmt.Fprintf(os.Stderr, "Failed to delete %s %s in namespace %s: %v\n", diff.resourceType, diff.diff, namespace, err)
}
}
switch opts.GroupBy {
case "namespace":
resources[namespace][diff.resourceType] = diff.diff
case "resource":
appendResources(resources, diff.resourceType, namespace, diff.diff)
}
}
}
var outputBuffer bytes.Buffer
var jsonResponse []byte
switch outputFormat {
case "table":
outputBuffer = FormatOutput(resources, opts)
case "json", "yaml":
var err error
if jsonResponse, err = json.MarshalIndent(resources, "", " "); err != nil {
return "", err
}
}
unusedMulti, err := unusedResourceFormatter(outputFormat, outputBuffer, opts, jsonResponse)
if err != nil {
fmt.Printf("err: %v\n", err)
}
return unusedMulti, nil
}