github.com/siglens/siglens@v0.0.0-20240328180423-f7ce9ae441ed/pkg/retention/retutils.go (about)

     1  /*
     2  Copyright 2023.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package retention
    18  
    19  import (
    20  	"io"
    21  	"os"
    22  	"path"
    23  
    24  	"github.com/siglens/siglens/pkg/config"
    25  )
    26  
    27  func IsDirEmpty(name string) bool {
    28  	f, err := os.Open(name)
    29  	if err != nil {
    30  		return false
    31  	}
    32  	defer f.Close()
    33  
    34  	// read in ONLY one file
    35  	_, err = f.Readdir(1)
    36  
    37  	// and if the file is EOF... well, the dir is empty.
    38  	return err == io.EOF
    39  }
    40  
    41  func RecursivelyDeleteParentDirectories(filePath string) {
    42  	temp := path.Dir(filePath)
    43  	for {
    44  		if temp == config.GetDataPath() {
    45  			break
    46  		}
    47  		if IsDirEmpty(temp) {
    48  			os.RemoveAll(temp)
    49  		} else {
    50  			break
    51  		}
    52  		temp = path.Dir(temp)
    53  	}
    54  }