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node_driver.go
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/
node_driver.go
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package node
import (
"archive/tar"
"archive/zip"
"bytes"
"compress/gzip"
"encoding/base64"
"fmt"
"io"
"net/http"
"strconv"
"strings"
"time"
"encoding/json"
"github.com/ghodss/yaml"
"github.com/rancher/norman/api/access"
"github.com/rancher/norman/types"
"github.com/rancher/norman/types/convert"
"github.com/rancher/rancher/pkg/encryptedstore"
"github.com/rancher/types/apis/management.cattle.io/v3"
"github.com/rancher/types/client/management/v3"
"github.com/rancher/types/compose"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
configKey = "extractedConfig"
)
type DriverHandlers struct {
NodeDriverClient v3.NodeDriverInterface
}
func (h *DriverHandlers) ActionHandler(actionName string, action *types.Action, apiContext *types.APIContext) error {
m, err := h.NodeDriverClient.GetNamespaced("", apiContext.ID, metav1.GetOptions{})
if err != nil {
return err
}
// passing nil as the resource only works because just namespace is grabbed from it and nodedriver is not namespaced
if err := apiContext.AccessControl.CanDo(v3.NodeDriverGroupVersionKind.Group, v3.NodeDriverResource.Name, "update", apiContext, nil, apiContext.Schema); err != nil {
return err
}
switch actionName {
case "activate":
m.Spec.Active = true
v3.NodeDriverConditionActive.Unknown(m)
case "deactivate":
m.Spec.Active = false
v3.NodeDriverConditionInactive.Unknown(m)
}
_, err = h.NodeDriverClient.Update(m)
if err != nil {
return err
}
data := map[string]interface{}{}
if err := access.ByID(apiContext, apiContext.Version, apiContext.Type, apiContext.ID, &data); err != nil {
return err
}
apiContext.WriteResponse(http.StatusOK, data)
return nil
}
// Formatter for NodeDriver
func (h *DriverHandlers) Formatter(apiContext *types.APIContext, resource *types.RawResource) {
if err := apiContext.AccessControl.CanDo(v3.NodeDriverGroupVersionKind.Group, v3.NodeDriverResource.Name, "update", apiContext, resource.Values, apiContext.Schema); err == nil {
resource.AddAction(apiContext, "activate")
resource.AddAction(apiContext, "deactivate")
}
resource.Links["exportYaml"] = apiContext.URLBuilder.Link("exportYaml", resource)
}
type DriverHandler struct {
SecretStore *encryptedstore.GenericEncryptedStore
}
func (h DriverHandler) LinkHandler(apiContext *types.APIContext, next types.RequestHandler) error {
var node map[string]interface{}
if err := access.ByID(apiContext, apiContext.Version, apiContext.Type, apiContext.ID, &node); err != nil {
return err
}
if err := apiContext.AccessControl.CanDo(v3.NodeDriverGroupVersionKind.Group, v3.NodeDriverResource.Name, "update", apiContext, node, apiContext.Schema); err != nil {
return err
}
nID, _ := node["id"].(string)
nodeID := strings.Split(nID, ":")[1]
secret, err := h.SecretStore.Get(nodeID)
if err != nil {
return err
}
data, err := base64.StdEncoding.DecodeString(secret[configKey])
if err != nil {
return err
}
gzipReader, err := gzip.NewReader(bytes.NewReader(data))
if err != nil {
return err
}
tarReader := tar.NewReader(gzipReader)
buf := new(bytes.Buffer)
w := zip.NewWriter(buf)
for {
header, err := tarReader.Next()
if err != nil {
if err == io.EOF {
break
}
return fmt.Errorf("error reinitializing config (tarRead.Next): %v", err)
}
parts := strings.Split(header.Name, "/")
if len(parts) != 4 {
continue
}
if parts[3] == "config.json" {
continue
}
fh := &zip.FileHeader{}
fh.Name = fmt.Sprintf("%s/%s", parts[2], parts[3])
fh.SetMode(0400)
file, err := w.CreateHeader(fh)
if err != nil {
return err
}
buf := &bytes.Buffer{}
_, err = io.Copy(buf, tarReader)
if err != nil {
return err
}
_, err = file.Write(buf.Bytes())
if err != nil {
return err
}
}
if err := w.Close(); err != nil {
return err
}
apiContext.Response.Header().Set("Content-Length", strconv.Itoa(len(buf.Bytes())))
apiContext.Response.Header().Set("Content-Type", "application/octet-stream")
apiContext.Response.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s.zip", node[client.NodeSpecFieldRequestedHostname]))
apiContext.Response.Header().Set("Cache-Control", "private")
apiContext.Response.Header().Set("Pragma", "private")
apiContext.Response.Header().Set("Expires", "Wed 24 Feb 1982 18:42:00 GMT")
_, err = apiContext.Response.Write(buf.Bytes())
if err != nil {
return err
}
return nil
}
func (h DriverHandlers) ExportYamlHandler(apiContext *types.APIContext, next types.RequestHandler) error {
switch apiContext.Link {
case "exportyaml":
nodeDriver, err := h.NodeDriverClient.Get(apiContext.ID, metav1.GetOptions{})
if err != nil {
return err
}
topkey := compose.Config{}
topkey.Version = "v3"
nd := client.NodeDriver{}
if err := convert.ToObj(nodeDriver.Spec, &nd); err != nil {
return err
}
topkey.NodeDrivers = map[string]client.NodeDriver{}
topkey.NodeDrivers[nodeDriver.Spec.DisplayName] = nd
m, err := convert.EncodeToMap(topkey)
if err != nil {
return err
}
delete(m["nodeDrivers"].(map[string]interface{})[nodeDriver.Spec.DisplayName].(map[string]interface{}), "actions")
delete(m["nodeDrivers"].(map[string]interface{})[nodeDriver.Spec.DisplayName].(map[string]interface{}), "links")
data, err := json.Marshal(m)
if err != nil {
return err
}
buf, err := yaml.JSONToYAML(data)
if err != nil {
return err
}
reader := bytes.NewReader(buf)
apiContext.Response.Header().Set("Content-Type", "text/yaml")
http.ServeContent(apiContext.Response, apiContext.Request, "exportYaml", time.Now(), reader)
return nil
}
return nil
}