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guestfs.go
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guestfs.go
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/*
* This file is part of the KubeVirt project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2021 Red Hat, Inc.
*
*/
package kubecli
import (
"context"
"encoding/json"
"fmt"
"net/url"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/rest"
)
type GuestfsInfo struct {
Registry string `json:"registry"`
Tag string `json:"tag"`
Digest string `json:"digest"`
ImagePrefix string `json:"imagePrefix"`
GsImage string `json:"gsImage"`
}
func (k *kubevirt) GuestfsVersion() *GuestfsVersion {
return &GuestfsVersion{
restClient: k.restClient,
resource: "guestfs",
}
}
type GuestfsVersion struct {
restClient *rest.RESTClient
resource string
}
func (v *GuestfsVersion) Get() (*GuestfsInfo, error) {
var group metav1.APIGroup
// First, find out which version to query
uri := ApiGroupName
result := v.restClient.Get().AbsPath(uri).Do(context.Background())
if data, err := result.Raw(); err != nil {
connErr, isConnectionErr := err.(*url.Error)
if isConnectionErr {
return nil, connErr.Err
}
return nil, err
} else if err = json.Unmarshal(data, &group); err != nil {
return nil, err
}
// Now, query the preferred version
uri = fmt.Sprintf("/apis/%s/guestfs", group.PreferredVersion.GroupVersion)
var info GuestfsInfo
result = v.restClient.Get().AbsPath(uri).Do(context.Background())
if data, err := result.Raw(); err != nil {
connErr, isConnectionErr := err.(*url.Error)
if isConnectionErr {
return nil, connErr.Err
}
return nil, err
} else if err = json.Unmarshal(data, &info); err != nil {
return nil, err
}
return &info, nil
}