def get(self,
remote_path,
local_path,
use_sudo=False,
username=None
):
"""Download a file from the remote host
:param remote_path: remote path of the file to download
:param local_path: local path where to download the file
:param use_sudo: allow to download a file from a location current user does not have access
:param username: sudo user
Usage::
# download remote file in local directory
>>> ssh_session.get(remote_path='/path/to/remote/file', local_path='/local/folder')
# donload remote file from a path not accessible by current user
>>> ssh_session.get(local_path='/path/to/local/file', remote_path='/path/to/remote/file', use_sudo=True)
"""
copy_path = remote_path
remote_filename = os.path.basename(remote_path)
sudo_username = username if username else 'root' if use_sudo else None
# copy first remote file in a temporary location accessible from current user
if use_sudo:
copy_path = "/tmp/%s" % util.id_generator(size=15)
copy_command = "cp %s %s" % (remote_path, copy_path)
self.run_cmd(copy_command, silent=True, username=sudo_username)
# if local download path is a directory, local filename will be same as remote
if os.path.isdir(local_path):
local_path = os.path.join(local_path, remote_filename)
sftp_client = self.get_sftp_client()
try:
with open(local_path, mode='w') as local_file:
with sftp_client.file(copy_path) as remote_file:
local_file.write(remote_file.read().decode('utf-8'))
finally:
if use_sudo:
# cleanup temporary file
self.run_cmd('rm %s' % copy_path, silent=True, username=sudo_username)
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