3f110e5b01a7a6fe396b8c9662270ef940f9a131
1 #
2 # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
3 # This module is free software, and you may redistribute it and/or modify
4 # under the same terms as Python, so long as this copyright message and
5 # disclaimer are retained in their original form.
6 #
7 # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
8 # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
9 # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
10 # POSSIBILITY OF SUCH DAMAGE.
11 #
12 # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
13 # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
14 # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
15 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
16 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
17 #
18 #$Id: blobfiles.py,v 1.4 2002-06-19 03:07:19 richard Exp $
19 '''
20 This module exports file storage for roundup backends.
21 Files are stored into a directory hierarchy.
22 '''
24 import os, os.path
26 def files_in_dir(dir):
27 if not os.path.exists(dir):
28 return 0
29 num_files = 0
30 for dir_entry in os.listdir(dir):
31 full_filename = os.path.join(dir,dir_entry)
32 if os.path.isfile(full_filename):
33 num_files = num_files + 1
34 elif os.path.isdir(full_filename):
35 num_files = num_files + files_in_dir(full_filename)
36 return num_files
38 class FileStorage:
39 """Store files in some directory structure"""
40 # TODO: maybe set "files"
41 # def __init__(self):
42 # pass
44 def filename(self, classname, nodeid, property=None):
45 '''Determine what the filename for the given node and optionally
46 property is.
47 '''
48 if property:
49 name = '%s%s.%s'%(classname, nodeid, property)
50 else:
51 # roundupdb.FileClass never specified the property name, so don't
52 # include it
53 name = '%s%s'%(classname, nodeid)
55 # have a separate subdir for every thousand messages
56 subdir = str(int(nodeid) / 1000)
57 return os.path.join(self.dir, 'files', classname, subdir, name)
59 def filename_flat(self, classname, nodeid, property=None):
60 '''Determine what the filename for the given node and optionally
61 property is.
62 '''
63 if property:
64 return os.path.join(self.dir, 'files', '%s%s.%s'%(classname,
65 nodeid, property))
66 else:
67 # roundupdb.FileClass never specified the property name, so don't
68 # include it
69 return os.path.join(self.dir, 'files', '%s%s'%(classname,
70 nodeid))
72 def storefile(self, classname, nodeid, property, content):
73 '''Store the content of the file in the database. The property may be
74 None, in which case the filename does not indicate which property
75 is being saved.
76 '''
77 name = self.filename(classname, nodeid, property)
78 if not os.path.exists(os.path.dirname(name)):
79 os.makedirs(os.path.dirname(name))
80 open(name + '.tmp', 'wb').write(content)
81 self.transactions.append((self._doStoreFile, (name, )))
84 def getfile(self, classname, nodeid, property):
85 '''Get the content of the file in the database.
86 '''
87 filename = self.filename(classname, nodeid, property)
88 try:
89 return open(filename, 'rb').read()
90 except:
91 try:
92 return open(filename+'.tmp', 'rb').read()
93 except:
94 # fallback to flat file storage
95 filename = self.filename_flat(classname, nodeid, property)
96 return open(filename, 'rb').read()
98 def numfiles(self):
99 '''Get number of files in storage, even across subdirectories.
100 '''
101 files_dir = os.path.join(self.dir, 'files')
102 return files_in_dir(files_dir)
104 def _doStoreFile(self, name, **databases):
105 '''Store the file as part of a transaction commit.
106 '''
107 # the file is currently ".tmp" - move it to its real name to commit
108 os.rename(name+".tmp", name)
109 pattern = name.split('/')[-1]
110 self.indexer.add_files(dir=os.path.dirname(name), pattern=pattern)
111 self.indexer.save_index()
113 # $Log: not supported by cvs2svn $
114 # Revision 1.3 2002/02/27 07:33:34 grubert
115 # . add, vim line and cvs log key.
116 #
117 #
118 # vim: set filetype=python ts=4 sw=4 et si