1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
#!/usr/bin/python
# -*- coding: latin1 -*-
### Copyright (C) 2011 Damon Lynch <damonlynch@gmail.com>
### This program is free software; you can redistribute it and/or modify
### it under the terms of the GNU General Public License as published by
### the Free Software Foundation; either version 2 of the License, or
### (at your option) any later version.
### This program is distributed in the hope that it will be useful,
### but WITHOUT ANY WARRANTY; without even the implied warranty of
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
### GNU General Public License for more details.
### You should have received a copy of the GNU General Public License
### along with this program; if not, write to the Free Software
### Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import multiprocessing
import tempfile
import os
import gio
import logging
logger = multiprocessing.get_logger()
import rpdmultiprocessing as rpdmp
import rpdfile
import problemnotification as pn
import config
from gettext import gettext as _
class CopyFiles(multiprocessing.Process):
def __init__(self, photo_download_folder, video_download_folder, files,
scan_pid,
batch_size_MB, results_pipe, terminate_queue,
run_event):
multiprocessing.Process.__init__(self)
self.results_pipe = results_pipe
self.terminate_queue = terminate_queue
self.batch_size_bytes = batch_size_MB * 1048576 # * 1024 * 1024
self.photo_download_folder = photo_download_folder
self.video_download_folder = video_download_folder
self.files = files
self.scan_pid = scan_pid
self.no_files= len(self.files)
self.run_event = run_event
def check_termination_request(self):
"""
Check to see this process has not been requested to immediately terminate
"""
if not self.terminate_queue.empty():
x = self.terminate_queue.get()
# terminate immediately
logger.info("Terminating file copying")
return True
return False
def update_progress(self, amount_downloaded, total):
# first check if process is being terminated
if not self.terminate_queue.empty():
# it is - cancel the current copy
self.cancel_copy.cancel()
else:
if (amount_downloaded - self.bytes_downloaded > self.batch_size_bytes) or (amount_downloaded == total):
chunk_downloaded = amount_downloaded - self.bytes_downloaded
self.bytes_downloaded = amount_downloaded
self.results_pipe.send((rpdmp.CONN_PARTIAL, (rpdmp.MSG_BYTES, (self.scan_pid, self.total_downloaded + amount_downloaded))))
def progress_callback(self, amount_downloaded, total):
#~ if self.check_termination_request():
#~ # FIXME: cancel copy
#~ pass
self.update_progress(amount_downloaded, total)
def run(self):
"""start the actual copying of files"""
self.bytes_downloaded = 0
self.total_downloaded = 0
self.cancel_copy = gio.Cancellable()
self.create_temp_dirs()
# Send the location of both temporary directories, so they can be
# removed once another process attempts to rename all the files in them
# and move them to generated subfolders
self.results_pipe.send((rpdmp.CONN_PARTIAL, (rpdmp.MSG_TEMP_DIRS,
(self.scan_pid,
self.photo_temp_dir,
self.video_temp_dir))))
if self.photo_temp_dir or self.video_temp_dir:
for i in range(len(self.files)):
rpd_file = self.files[i]
# pause if instructed by the caller
self.run_event.wait()
if self.check_termination_request():
return None
source = gio.File(path=rpd_file.full_file_name)
temp_full_file_name = os.path.join(
self._get_dest_dir(rpd_file.file_type),
rpd_file.name)
rpd_file.temp_full_file_name = temp_full_file_name
dest = gio.File(path=temp_full_file_name)
copy_succeeded = False
try:
source.copy(dest, self.progress_callback, cancellable=self.cancel_copy)
copy_succeeded = True
except gio.Error, inst:
rpd_file.add_problem(None,
pn.DOWNLOAD_COPYING_ERROR_W_NO,
{'filetype': rpd_file.title})
rpd_file.add_extra_detail(
pn.DOWNLOAD_COPYING_ERROR_W_NO_DETAIL,
{'errorno': inst.code, 'strerror': inst.message})
rpd_file.status = config.STATUS_DOWNLOAD_FAILED
rpd_file.error_title = rpd_file.problem.get_title()
rpd_file.error_msg = _("%(problem)s\nFile: %(file)s") % \
{'problem': rpd_file.problem.get_problems(),
'file': rpd_file.full_file_name}
logger.error("Failed to download file: %s", rpd_file.full_file_name)
logger.error(inst)
self.update_progress(rpd_file.size, rpd_file.size)
# increment this amount regardless of whether the copy actually
# succeeded or not. It's neccessary to keep the user informed.
self.total_downloaded += rpd_file.size
if rpd_file.metadata is not None:
rpd_file.metadata = None
self.results_pipe.send((rpdmp.CONN_PARTIAL, (rpdmp.MSG_FILE,
(copy_succeeded, rpd_file, i + 1, temp_full_file_name))))
self.results_pipe.send((rpdmp.CONN_COMPLETE, None))
def _get_dest_dir(self, file_type):
if file_type == rpdfile.FILE_TYPE_PHOTO:
return self.photo_temp_dir
else:
return self.video_temp_dir
def _create_temp_dir(self, folder):
try:
temp_dir = tempfile.mkdtemp(prefix="rpd-tmp-", dir=folder)
except OSError, (errno, strerror):
# FIXME: error reporting
logger.error("Failed to create temporary directory in %s: %s %s",
errono,
strerror,
folder)
temp_dir = None
return temp_dir
def create_temp_dirs(self):
self.photo_temp_dir = self.video_temp_dir = None
if self.photo_download_folder is not None:
self.photo_temp_dir = self._create_temp_dir(self.photo_download_folder)
if self.video_download_folder is not None:
self.video_temp_dir = self._create_temp_dir(self.photo_download_folder)
|
