mirror of
https://github.com/minio/minio.git
synced 2024-12-25 06:35:56 -05:00
84 lines
2.9 KiB
Go
84 lines
2.9 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2016 Minio, Inc.
|
|
*
|
|
* 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 main
|
|
|
|
import (
|
|
"bytes"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
)
|
|
|
|
const policyJSON = "policy.json"
|
|
|
|
func getBucketFromPolicyPath(oldPolicyPath string) string {
|
|
bucketPrefix, _ := filepath.Split(oldPolicyPath)
|
|
_, bucketName := filepath.Split(strings.TrimSuffix(bucketPrefix, slashSeparator))
|
|
return bucketName
|
|
}
|
|
|
|
func cleanupOldBucketPolicyConfigs() error {
|
|
// Get old bucket policy config directory.
|
|
oldBucketsConfigDir, err := getOldBucketsConfigPath()
|
|
fatalIf(err, "Unable to fetch buckets config path to migrate bucket policy")
|
|
|
|
// Recursively remove configDir/buckets/ - old bucket policy config location.
|
|
// N B This is called only if all bucket policies were successfully migrated.
|
|
return os.RemoveAll(oldBucketsConfigDir)
|
|
}
|
|
|
|
func migrateBucketPolicyConfig(objAPI ObjectLayer) error {
|
|
// Get old bucket policy config directory.
|
|
oldBucketsConfigDir, err := getOldBucketsConfigPath()
|
|
fatalIf(err, "Unable to fetch buckets config path to migrate bucket policy")
|
|
|
|
// Check if config directory holding bucket policy exists before
|
|
// migration.
|
|
_, err = os.Stat(oldBucketsConfigDir)
|
|
if os.IsNotExist(err) {
|
|
return nil
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// WalkFunc that migrates access-policy.json to
|
|
// .minio.sys/buckets/bucketName/policy.json on all disks.
|
|
migrateBucketPolicy := func(policyPath string, fileInfo os.FileInfo, err error) error {
|
|
// policyFile - e.g /configDir/sample-bucket/access-policy.json
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// Skip entries that aren't bucket policy files.
|
|
if fileInfo.Name() != "access-policy.json" {
|
|
return nil
|
|
}
|
|
// Get bucketName from old policy file path.
|
|
bucketName := getBucketFromPolicyPath(policyPath)
|
|
// Read bucket policy config from old location.
|
|
policyBytes, err := ioutil.ReadFile(policyPath)
|
|
fatalIf(err, "Unable to read bucket policy to migrate bucket policy", policyPath)
|
|
newPolicyPath := retainSlash(bucketConfigPrefix) + retainSlash(bucketName) + policyJSON
|
|
// Erasure code the policy config to all the disks.
|
|
_, err = objAPI.PutObject(minioMetaBucket, newPolicyPath, int64(len(policyBytes)), bytes.NewReader(policyBytes), nil)
|
|
fatalIf(err, "Unable to write bucket policy during migration.", newPolicyPath)
|
|
return nil
|
|
}
|
|
return filepath.Walk(oldBucketsConfigDir, migrateBucketPolicy)
|
|
}
|