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#!/usr/bin/env python
from fs.utils import copyfile, copyfile_non_atomic
from fs.path import pathjoin, iswildcard
from fs.commands.runner import Command
import sys
import Queue as queue
import time
import threading
class FileOpThread(threading.Thread):
def __init__(self, action, name, dest_fs, queue, on_done, on_error):
self.action = action
self.dest_fs = dest_fs
self.queue = queue
self.on_done = on_done
self.on_error = on_error
self.finish_event = threading.Event()
super(FileOpThread, self).__init__()
def run(self):
while not self.finish_event.isSet():
try:
path_type, fs, path, dest_path = self.queue.get(timeout=0.1)
except queue.Empty:
continue
try:
if path_type == FScp.DIR:
self.dest_fs.makedir(path, recursive=True, allow_recreate=True)
else:
self.action(fs, path, self.dest_fs, dest_path, overwrite=True)
except Exception, e:
self.on_error(e)
self.queue.task_done()
break
else:
self.queue.task_done()
self.on_done(path_type, fs, path, self.dest_fs, dest_path)
class FScp(Command):
DIR, FILE = 0, 1
usage = """fscp [OPTION]... [SOURCE]... [DESTINATION]
Copy SOURCE to DESTINATION"""
def get_action(self):
if self.options.threads > 1:
return copyfile_non_atomic
else:
return copyfile
def get_verb(self):
return 'copying...'
def get_optparse(self):
optparse = super(FScp, self).get_optparse()
optparse.add_option('-p', '--progress', dest='progress', action="store_true", default=False,
help="show progress", metavar="PROGRESS")
optparse.add_option('-t', '--threads', dest='threads', action="store", default=1,
help="number of threads to use", type="int", metavar="THREAD_COUNT")
return optparse
def do_run(self, options, args):
self.options = options
if len(args) < 2:
self.error("at least two filesystems required\n")
return 1
srcs = args[:-1]
dst = args[-1]
dst_fs, dst_path = self.open_fs(dst, writeable=True, create_dir=True)
if dst_path is not None and dst_fs.isfile(dst_path):
self.error('Destination must be a directory\n')
return 1
if dst_path:
dst_fs = dst_fs.makeopendir(dst_path)
dst_path = None
copy_fs_paths = []
progress = options.progress
if progress:
sys.stdout.write(self.progress_bar(len(srcs), 0, 'scanning...'))
sys.stdout.flush()
self.root_dirs = []
for i, fs_url in enumerate(srcs):
src_fs, src_path = self.open_fs(fs_url)
if src_path is None:
src_path = '/'
if iswildcard(src_path):
for file_path in src_fs.listdir(wildcard=src_path, full=True):
copy_fs_paths.append((self.FILE, src_fs, file_path, file_path))
else:
if src_fs.isdir(src_path):
self.root_dirs.append((src_fs, src_path))
src_sub_fs = src_fs.opendir(src_path)
for dir_path, file_paths in src_sub_fs.walk():
if dir_path not in ('', '/'):
copy_fs_paths.append((self.DIR, src_sub_fs, dir_path, dir_path))
sub_fs = src_sub_fs.opendir(dir_path)
for file_path in file_paths:
copy_fs_paths.append((self.FILE, sub_fs, file_path, pathjoin(dir_path, file_path)))
else:
if src_fs.exists(src_path):
copy_fs_paths.append((self.FILE, src_fs, src_path, src_path))
else:
self.error('%s is not a file or directory\n' % src_path)
return 1
if progress:
sys.stdout.write(self.progress_bar(len(srcs), i + 1, 'scanning...'))
sys.stdout.flush()
if progress:
sys.stdout.write(self.progress_bar(len(copy_fs_paths), 0, self.get_verb()))
sys.stdout.flush()
if self.options.threads > 1:
copy_fs_dirs = [r for r in copy_fs_paths if r[0] == self.DIR]
copy_fs_paths = [r for r in copy_fs_paths if r[0] == self.FILE]
for path_type, fs, path, dest_path in copy_fs_dirs:
dst_fs.makedir(path, allow_recreate=True, recursive=True)
self.lock = threading.RLock()
self.total_files = len(copy_fs_paths)
self.done_files = 0
file_queue = queue.Queue()
threads = [FileOpThread(self.get_action(),
'T%i' % i,
dst_fs,
file_queue,
self.on_done,
self.on_error)
for i in xrange(options.threads)]
for thread in threads:
thread.start()
self.action_errors = []
complete = False
try:
enqueue = file_queue.put
for resource in copy_fs_paths:
enqueue(resource)
while not file_queue.empty():
time.sleep(0)
if self.any_error():
raise SystemExit
# Can't use queue.join here, or KeyboardInterrupt will not be
# caught until the queue is finished
#file_queue.join()
except KeyboardInterrupt:
options.progress = False
self.output("\nCancelling...\n")
except SystemExit:
options.progress = False
finally:
sys.stdout.flush()
for thread in threads:
thread.finish_event.set()
for thread in threads:
thread.join()
complete = True
if not self.any_error():
self.post_actions()
dst_fs.close()
if self.action_errors:
for error in self.action_errors:
self.error(self.wrap_error(unicode(error)) + '\n')
sys.stdout.flush()
else:
if complete and options.progress:
sys.stdout.write(self.progress_bar(self.total_files, self.done_files, ''))
sys.stdout.write('\n')
sys.stdout.flush()
def post_actions(self):
pass
def on_done(self, path_type, src_fs, src_path, dst_fs, dst_path):
self.lock.acquire()
try:
if self.options.verbose:
if path_type == self.DIR:
print "mkdir %s" % dst_fs.desc(dst_path)
else:
print "%s -> %s" % (src_fs.desc(src_path), dst_fs.desc(dst_path))
elif self.options.progress:
self.done_files += 1
sys.stdout.write(self.progress_bar(self.total_files, self.done_files, self.get_verb()))
sys.stdout.flush()
finally:
self.lock.release()
def on_error(self, e):
self.lock.acquire()
try:
self.action_errors.append(e)
finally:
self.lock.release()
def any_error(self):
self.lock.acquire()
try:
return bool(self.action_errors)
finally:
self.lock.release()
def progress_bar(self, total, remaining, msg=''):
bar_width = 20
throbber = '|/-\\'
throb = throbber[remaining % len(throbber)]
done = float(remaining) / total
done_steps = int(done * bar_width)
bar_steps = ('#' * done_steps).ljust(bar_width)
msg = '%s %i%%' % (msg, int(done * 100.0))
msg = msg.ljust(20)
if total == remaining:
throb = ''
bar = '\r%s[%s] %s\r' % (throb, bar_steps, msg.lstrip())
return bar
def run():
return FScp().run()
if __name__ == "__main__":
sys.exit(run())
|
