# Fdfs_client py
The Python interface to the Fastdfs Ver 4.06.
## Installation
$ sudo python setup.py install
## Getting Started
1. import fdfs_client.client module
2. instantiate class Fdfs_client
3. call memeber functions
>>> from fdfs_client.client import *
>>> client = Fdfs_client('/etc/fdfs/client.conf')
>>> ret = client.upload_by_filename('test')
>>> ret
{'Group name':'group1','Status':'Upload successed.', 'Remote file_id':'group1/M00/00/00/
wKjzh0_xaR63RExnAAAaDqbNk5E1398.py','Uploaded size':'6.0KB','Local file name':'test'
, 'Storage IP':'192.168.243.133'}
## API Reference
Class Fdfs_client:
member functions:
* upload_by_filename(self, filename, meta_dict = None)
'''
Upload a file to Storage server.
arguments:
@filename: string, name of file that will be uploaded
@meta_dict: dictionary e.g.:{
'ext_name' : 'jpg',
'file_size' : '10240B',
'width' : '160px',
'hight' : '80px'
} meta_dict can be null
@return dict {
'Group name' : group_name,
'Remote file_id' : remote_file_id,
'Status' : 'Upload successed.',
'Local file name' : local_file_name,
'Uploaded size' : upload_size,
'Storage IP' : storage_ip
} if success else None
* upload_by_buffer(self, filebuffer, file_ext_name = None, meta_dict = None)
'''
Upload a buffer to Storage server.
arguments:
@filebuffer: string, buffer
@file_ext_name: string, file extend name
@meta_dict: dictionary e.g.:{
'ext_name' : 'jpg',
'file_size' : '10240B',
'width' : '160px',
'hight' : '80px'
}
@return dict {
'Group name' : group_name,
'Remote file_id' : remote_file_id,
'Status' : 'Upload successed.',
'Local file name' : '',
'Uploaded size' : upload_size,
'Storage IP' : storage_ip
}
'''
* upload_slave_by_filename(self, filename, remote_file_id, prefix_name, \
meta_dict = None)
'''
Upload slave file to Storage server.
arguments:
@filename: string, local file name
@remote_file_id: string, remote file id
@prefix_name: string
@meta_dict: dictionary e.g.:{
'ext_name' : 'jpg',
'file_size' : '10240B',
'width' : '160px',
'hight' : '80px'
}
@return dictionary {
'Status' : 'Upload slave successed.',
'Local file name' : local_filename,
'Uploaded size' : upload_size,
'Remote file id' : remote_file_id,
'Storage IP' : storage_ip
}
'''
* upload_slave_by_buffer(self, filebuffer, remote_file_id, \
meta_dict = None, file_ext_name = None)
'''
Upload slave file by buffer
arguments:
@filebuffer: string
@remote_file_id: string
@meta_dict: dictionary e.g.:{
'ext_name' : 'jpg',
'file_size' : '10240B',
'width' : '160px',
'hight' : '80px'
}
@return dictionary {
'Status' : 'Upload slave successed.',
'Local file name' : local_filename,
'Uploaded size' : upload_size,
'Remote file id' : remote_file_id,
'Storage IP' : storage_ip
}
'''
* upload_appender_by_filename(self, local_filename, meta_dict = None)
'''
Upload an appender file by filename.
arguments:
@local_filename: string
@meta_dict: dictionary e.g.:{
'ext_name' : 'jpg',
'file_size' : '10240B',
'width' : '160px',
'hight' : '80px'
} Notice: it can be null
@return dict {
'Group name' : group_name,
'Remote file_id' : remote_file_id,
'Status' : 'Upload successed.',
'Local file name' : '',
'Uploaded size' : upload_size,
'Storage IP' : storage_ip
}
'''
* upload_appender_by_buffer(self, filebuffer, file_ext_name = None, meta_dict = None)
'''
Upload a buffer to Storage server.
arguments:
@filebuffer: string
@file_ext_name: string, can be null
@meta_dict: dictionary, can be null
@return dict {
'Group name' : group_name,
'Remote file_id' : remote_file_id,
'Status' : 'Upload successed.',
'Local file name' : '',
'Uploaded size' : upload_size,
'Storage IP' : storage_ip
}
'''
* delete_file(self, remote_file_id)
'''
Delete a file from Storage server.
arguments:
@remote_file_id: string, file_id of file that is on storage server
@return tuple ('Delete file successed.', remote_file_id, storage_ip)
'''
* download_to_file(self, local_filename, remote_file_id, offset = 0, down_bytes = 0)
'''
Download a file from Storage server.
arguments:
@local_filename: string, local name of file
@remote_file_id: string, file_id of file that is on storage server
@offset: long
@down_bytes: long
@return dict {
'Remote file_id' : remote_file_id,
'Content' : local_filename,
'Download size' : downloaded_size,
'Storage IP' : storage_ip
}
'''
* download_to_buffer(self, remote_file_id, offset = 0, down_bytes = 0)
'''
Download a file from Storage server and store in buffer.
arguments:
@remote_file_id: string, file_id of file that is on storage server
@offset: long
@down_bytes: long
@return dict {
'Remote file_id' : remote_file_id,
'Content' : file_buffer,
'Download size' : downloaded_size,
'Storage IP' : storage_ip
}
'''
* list_one_group(self, group_name)
'''
List one group information.
arguments:
@group_name: string, group name will be list
@return Group_info, instance
'''
* list_all_groups(self)
'''
List all group information.
@return dictionary {
'Groups count' : group_count,
'Groups' : list of groups
}
'''
* list_servers(self, group_name, storage_ip = None)
'''
List all storage servers information in a group
arguments:
@group_name: string
@return dictionary {
'Group name' : group_name,
'Servers' : server list,
}
'''
* get_meta_data(self, remote_file_id)
'''
Get meta data of remote file.
arguments:
@remote_fileid: string, remote file id
@return dictionary, meta data
'''
* set_meta_data(self, remote_file_id, \
meta_dict, op_flag = STORAGE_SET_METADATA_FLAG_OVERWRITE)
'''
Set meta data of remote file.
arguments:
@remote_file_id: string
@meta_dict: dictionary
@op_flag: char, 'O' for overwrite, 'M' for merge
@return dictionary {
'Status' : status,
'Storage IP' : storage_ip
}
'''
* append_by_filename(self, local_filename, remote_fileid)
'''
Append a file of Storage server
arguments:
@local_filename: string
@remote_fileid: string
@return dict {
'Group name' : group_name,
'Remote file_id' : remote_file_id,
'Status' : 'Upload successed.',
'Local file name' : '',
'Uploaded size' : upload_size,
'Storage IP' : storage_ip
}
'''
* append_by_buffer(self, file_buffer, remote_fileid)
'''
Append a file of Storage server
arguments:
@file_buffer: string
@remote_fileid: string
@return dict {
'Group name' : group_name,
'Remote file_id' : remote_file_id,
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