github.com/matrixorigin/matrixone@v1.2.0/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) Close() {
    56  	for _, fs := range f.mappings {
    57  		fs.Close()
    58  	}
    59  }
    60  
    61  func (f *FileServices) deleteSingle(ctx context.Context, filePath string) error {
    62  	path, err := ParsePathAtService(filePath, "")
    63  	if err != nil {
    64  		return err
    65  	}
    66  	if path.Service == "" {
    67  		path.Service = f.defaultName
    68  	}
    69  	fs, err := Get[FileService](f, path.Service)
    70  	if err != nil {
    71  		return err
    72  	}
    73  	return fs.Delete(ctx, filePath)
    74  }
    75  
    76  func (f *FileServices) List(ctx context.Context, dirPath string) ([]DirEntry, error) {
    77  	path, err := ParsePathAtService(dirPath, "")
    78  	if err != nil {
    79  		return nil, err
    80  	}
    81  	if path.Service == "" {
    82  		path.Service = f.defaultName
    83  	}
    84  	fs, err := Get[FileService](f, path.Service)
    85  	if err != nil {
    86  		return nil, err
    87  	}
    88  	return fs.List(ctx, dirPath)
    89  }
    90  
    91  func (f *FileServices) Name() string {
    92  	return f.defaultName
    93  }
    94  
    95  func (f *FileServices) Read(ctx context.Context, vector *IOVector) error {
    96  	path, err := ParsePathAtService(vector.FilePath, "")
    97  	if err != nil {
    98  		return err
    99  	}
   100  	if path.Service == "" {
   101  		path.Service = f.defaultName
   102  	}
   103  	fs, err := Get[FileService](f, path.Service)
   104  	if err != nil {
   105  		return err
   106  	}
   107  	return fs.Read(ctx, vector)
   108  }
   109  
   110  func (f *FileServices) ReadCache(ctx context.Context, vector *IOVector) error {
   111  	path, err := ParsePathAtService(vector.FilePath, "")
   112  	if err != nil {
   113  		return err
   114  	}
   115  	if path.Service == "" {
   116  		path.Service = f.defaultName
   117  	}
   118  	fs, err := Get[FileService](f, path.Service)
   119  	if err != nil {
   120  		return err
   121  	}
   122  	return fs.ReadCache(ctx, vector)
   123  }
   124  
   125  func (f *FileServices) Write(ctx context.Context, vector IOVector) error {
   126  	path, err := ParsePathAtService(vector.FilePath, "")
   127  	if err != nil {
   128  		return err
   129  	}
   130  	if path.Service == "" {
   131  		path.Service = f.defaultName
   132  	}
   133  	fs, err := Get[FileService](f, path.Service)
   134  	if err != nil {
   135  		return err
   136  	}
   137  	return fs.Write(ctx, vector)
   138  }
   139  
   140  func (f *FileServices) StatFile(ctx context.Context, filePath string) (*DirEntry, error) {
   141  	path, err := ParsePathAtService(filePath, "")
   142  	if err != nil {
   143  		return nil, err
   144  	}
   145  	if path.Service == "" {
   146  		path.Service = f.defaultName
   147  	}
   148  	fs, err := Get[FileService](f, path.Service)
   149  	if err != nil {
   150  		return nil, err
   151  	}
   152  	return fs.StatFile(ctx, filePath)
   153  }
   154  
   155  func (f *FileServices) PrefetchFile(ctx context.Context, filePath string) error {
   156  	path, err := ParsePathAtService(filePath, "")
   157  	if err != nil {
   158  		return err
   159  	}
   160  	if path.Service == "" {
   161  		path.Service = f.defaultName
   162  	}
   163  	fs, err := Get[FileService](f, path.Service)
   164  	if err != nil {
   165  		return err
   166  	}
   167  	return fs.PrefetchFile(ctx, filePath)
   168  }