100 lines
3.0 KiB
Go
100 lines
3.0 KiB
Go
/*
|
|
Copyright 2016 The Rook Authors. All rights reserved.
|
|
|
|
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.
|
|
*/
|
|
package client
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
|
|
"strconv"
|
|
|
|
"github.com/rook/rook/pkg/clusterd"
|
|
)
|
|
|
|
const (
|
|
ImageMinSize = uint64(1048576) // 1 MB
|
|
)
|
|
|
|
type CephBlockImage struct {
|
|
Name string `json:"image"`
|
|
Size uint64 `json:"size"`
|
|
Format int `json:"format"`
|
|
}
|
|
|
|
func ListImages(context *clusterd.Context, clusterName, poolName string) ([]CephBlockImage, error) {
|
|
args := []string{"ls", "-l", poolName}
|
|
buf, err := ExecuteRBDCommand(context, clusterName, args)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to list images for pool %s: %+v", poolName, err)
|
|
}
|
|
|
|
var images []CephBlockImage
|
|
err = json.Unmarshal(buf, &images)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("unmarshal failed: %+v. raw buffer response: %s", err, string(buf))
|
|
}
|
|
|
|
return images, nil
|
|
}
|
|
|
|
func CreateImage(context *clusterd.Context, clusterName, name, poolName string, size uint64) (*CephBlockImage, error) {
|
|
if size > 0 && size < ImageMinSize {
|
|
// rbd tool uses MB as the smallest unit for size input. 0 is OK but anything else smaller
|
|
// than 1 MB should just be rounded up to 1 MB.
|
|
logger.Warningf("requested image size %d is less than the minimum size of %d, using the minimum.", size, ImageMinSize)
|
|
size = ImageMinSize
|
|
}
|
|
|
|
sizeMB := int(size / 1024 / 1024)
|
|
imageSpec := getImageSpec(name, poolName)
|
|
|
|
args := []string{"create", imageSpec, "--size", strconv.Itoa(sizeMB)}
|
|
buf, err := ExecuteRBDCommandNoFormat(context, clusterName, args)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to create image %s in pool %s of size %d: %+v. output: %s",
|
|
name, poolName, size, err, string(buf))
|
|
}
|
|
|
|
// now that the image is created, retrieve it
|
|
images, err := ListImages(context, clusterName, poolName)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to list images after successfully creating image %s: %v", name, err)
|
|
}
|
|
for i := range images {
|
|
if images[i].Name == name {
|
|
return &images[i], nil
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("failed to find image %s after creating it", name)
|
|
}
|
|
|
|
func DeleteImage(context *clusterd.Context, clusterName, name, poolName string) error {
|
|
imageSpec := getImageSpec(name, poolName)
|
|
args := []string{"rm", imageSpec}
|
|
buf, err := ExecuteRBDCommandNoFormat(context, clusterName, args)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to delete image %s in pool %s: %+v. output: %s",
|
|
name, poolName, err, string(buf))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func getImageSpec(name, poolName string) string {
|
|
return fmt.Sprintf("%s/%s", poolName, name)
|
|
}
|