class FTP(Sftp, Command):
def __init__(self, ):
Sftp.__init__(self)
Command.__init__(self)
self.size = Size()
def get_server_size(self, server_path=u'/python/voice/1/1.mp3'):
##获取服务器上文件大小
filesize = self.size.get_server_size(command=self,
server_path=server_path)
return filesize
def ftp_get(self, server_path=u'/python/books.html', local_floder=u''):
##下载服务器文件到本地
filesize = self.get_server_size(server_path=server_path)
self.sftp_get(server_path=server_path,
local_floder=local_floder,
filesize=filesize)
def ftp_put(self,
local_path=u'c:/users/sunzhiming/desktop/books.html',
server_floder=u'/python'):
#上传文件到服务器
filesize = self.size.get_local_size(local_path)
self.sftp_put(local_path=local_path,
server_floder=server_floder,
filesize=filesize)
def sftp_get(self, server_path, local_floder='', filesize='1K'):
##get方法，未指定local_floder，默认保存在当前路径下
filename = server_path.rsplit('/', 1)[-1]
if local_floder:
local_path = u'%s/%s' % (local_floder, filename)
else:
local_path = filename
if os.path.exists(local_path):
local_size = Size.get_local_size(local_path)
server_size = filesize
diff_size = server_size - local_size
putty_diff_size = Size.putty_size(size=diff_size)
log = u'size of server_path= %s - size of local_path= %s is :%s' % (
server_path, local_path, putty_diff_size)
logging.info(log)
print log
if diff_size < 0:
##本地文件大于服务器文件，说明不是同一个文件,暂不做处理
flag = None
pass
elif diff_size < 1024:
##说明两个文件差异不大，可以认为文件以及下载完成
flag = False
else:
##两个文件差异1024B,认为文件未下载完毕
log = u'local_path= %s exist' % local_path
print log
logging.info(log)
flag = True
else:
#文件不存在，文件尚未下载
flag = True
if flag:
##flag 用于标识是否开启下载
try:
putty_server_size = Size.putty_size(filesize)
log = u'from %s download %s,filesize=%s' % (
server_path, local_path, putty_server_size)
print log
logging.info(log)
t1 = time()
self.sftp.get(server_path, local_path)
t2 = time()
t = t2 - t1
log = u'successfully download %s to %s,cost time=%.2f second' % (
server_path, local_path, t)
print log
logging.info(log)
except:
log = format_exc()
logging.info(log)
print log
