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minio/cmd/disk-usage.go

54 lines
1.4 KiB

/*
* MinIO Cloud Storage, (C) 2018 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 cmd
import (
"context"
)
// getDiskUsage walks the file tree rooted at root, calling usageFn
// for each file or directory in the tree, including root.
func getDiskUsage(ctx context.Context, root string, usageFn usageFunc) error {
return walk(ctx, root+SlashSeparator, usageFn)
}
type usageFunc func(ctx context.Context, entry string) error
// walk recursively descends path, calling walkFn.
func walk(ctx context.Context, path string, usageFn usageFunc) error {
if err := usageFn(ctx, path); err != nil {
return err
}
if !HasSuffix(path, SlashSeparator) {
return nil
}
entries, err := readDir(path)
if err != nil {
return usageFn(ctx, path)
}
for _, entry := range entries {
fname := pathJoin(path, entry)
if err = walk(ctx, fname, usageFn); err != nil {
return err
}
}
return nil
}