github.com/matrixorigin/matrixone@v0.7.0/pkg/fileservice/file_services.go (about)

     1  // Copyright 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package fileservice
    16  
    17  import (
    18  	"context"
    19  	"strings"
    20  
    21  	"github.com/matrixorigin/matrixone/pkg/common/moerr"
    22  )
    23  
    24  type FileServices struct {
    25  	defaultName string
    26  	mappings    map[string]FileService
    27  }
    28  
    29  func NewFileServices(defaultName string, fss ...FileService) (*FileServices, error) {
    30  	f := &FileServices{
    31  		defaultName: defaultName,
    32  		mappings:    make(map[string]FileService),
    33  	}
    34  	for _, fs := range fss {
    35  		name := strings.ToLower(fs.Name())
    36  		if _, ok := f.mappings[name]; ok {
    37  			return nil, moerr.NewDupServiceNameNoCtx(name)
    38  		}
    39  		f.mappings[name] = fs
    40  	}
    41  	return f, nil
    42  }
    43  
    44  var _ FileService = &FileServices{}
    45  
    46  func (f *FileServices) Delete(ctx context.Context, filePaths ...string) error {
    47  	for _, filePath := range filePaths {
    48  		if err := f.deleteSingle(ctx, filePath); err != nil {
    49  			return err
    50  		}
    51  	}
    52  	return nil
    53  }
    54  
    55  func (f *FileServices) deleteSingle(ctx context.Context, filePath string) error {
    56  	path, err := ParsePathAtService(filePath, "")
    57  	if err != nil {
    58  		return err
    59  	}
    60  	if path.Service == "" {
    61  		path.Service = f.defaultName
    62  	}
    63  	fs, err := Get[FileService](f, path.Service)
    64  	if err != nil {
    65  		return err
    66  	}
    67  	return fs.Delete(ctx, filePath)
    68  }
    69  
    70  func (f *FileServices) List(ctx context.Context, dirPath string) ([]DirEntry, error) {
    71  	path, err := ParsePathAtService(dirPath, "")
    72  	if err != nil {
    73  		return nil, err
    74  	}
    75  	if path.Service == "" {
    76  		path.Service = f.defaultName
    77  	}
    78  	fs, err := Get[FileService](f, path.Service)
    79  	if err != nil {
    80  		return nil, err
    81  	}
    82  	return fs.List(ctx, dirPath)
    83  }
    84  
    85  func (f *FileServices) Name() string {
    86  	return f.defaultName
    87  }
    88  
    89  func (f *FileServices) Read(ctx context.Context, vector *IOVector) error {
    90  	path, err := ParsePathAtService(vector.FilePath, "")
    91  	if err != nil {
    92  		return err
    93  	}
    94  	if path.Service == "" {
    95  		path.Service = f.defaultName
    96  	}
    97  	fs, err := Get[FileService](f, path.Service)
    98  	if err != nil {
    99  		return err
   100  	}
   101  	return fs.Read(ctx, vector)
   102  }
   103  
   104  func (f *FileServices) Write(ctx context.Context, vector IOVector) error {
   105  	path, err := ParsePathAtService(vector.FilePath, "")
   106  	if err != nil {
   107  		return err
   108  	}
   109  	if path.Service == "" {
   110  		path.Service = f.defaultName
   111  	}
   112  	fs, err := Get[FileService](f, path.Service)
   113  	if err != nil {
   114  		return err
   115  	}
   116  	return fs.Write(ctx, vector)
   117  }
   118  
   119  func (f *FileServices) StatFile(ctx context.Context, filePath string) (*DirEntry, error) {
   120  	path, err := ParsePathAtService(filePath, "")
   121  	if err != nil {
   122  		return nil, err
   123  	}
   124  	if path.Service == "" {
   125  		path.Service = f.defaultName
   126  	}
   127  	fs, err := Get[FileService](f, path.Service)
   128  	if err != nil {
   129  		return nil, err
   130  	}
   131  	return fs.StatFile(ctx, filePath)
   132  }