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label.go
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label.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright 2022 Authors of KubeArmor
package vm
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"strings"
"time"
)
//LabelOptions are optional configuration for kArmor vm policy
type LabelOptions struct {
VMName string
VMLabels string
}
// KubeArmorVirtualMachineLabel - Label struct for KVMS control plane
type KubeArmorVirtualMachineLabel struct {
Type string `json:"type"`
Name string `json:"name"`
Labels []map[string]string `json:"labels,omitempty"`
}
//LabelHandling Function recives path to YAML file with the type of event and HTTP Server
func LabelHandling(t string, o LabelOptions, address string, isKvmsEnv bool) error {
var respBody []byte
if isKvmsEnv {
labelEvent := KubeArmorVirtualMachineLabel{
Type: t,
Name: o.VMName,
}
if t == "LIST" {
// List all labels for mentioned VM
labelEvent.Labels = nil
} else {
labelArr := strings.Split(o.VMLabels, ",")
for _, labelList := range labelArr {
label := make(map[string]string)
labelVal := strings.Split(labelList, ":")
label[labelVal[0]] = labelVal[1]
labelEvent.Labels = append(labelEvent.Labels, label)
}
}
labelEventData, err := json.Marshal(labelEvent)
if err != nil {
return err
}
timeout := time.Duration(5 * time.Second)
client := http.Client{
Timeout: timeout,
}
request, err := http.NewRequest("POST", address+"/label", bytes.NewBuffer(labelEventData))
request.Header.Set("Content-type", "application/json")
if err != nil {
return fmt.Errorf("failed to manage labels")
}
resp, err := client.Do(request)
if err != nil {
return fmt.Errorf("failed to manage labels")
}
defer resp.Body.Close()
respBody, err = io.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("failed to send label")
}
}
if t == "LIST" {
if string(respBody) == "" {
return fmt.Errorf("failed to get label list")
}
fmt.Printf("The label list for %s is %s\n", o.VMName, string(respBody))
return nil
}
fmt.Println("Success")
return nil
}