Operations-related content for Windmill.
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windmill-ops/launch/sshclient.py

58 lines
1.8 KiB

# Copyright (C) 2011-2012 OpenStack LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
#
# See the License for the specific language governing permissions and
# limitations under the License.
import contextlib
import sys
import paramiko
class SSHException(Exception):
def __init__(self, message, rc):
super(SSHException, self).__init__(message)
self.rc = rc
class SSHClient(object):
def __init__(self, ip, username, password=None, pkey=None):
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.WarningPolicy())
client.connect(ip, username=username, password=password, pkey=pkey)
self.client = client
def ssh(self, command, error_ok=False):
stdin, stdout, stderr = self.client.exec_command(command)
print('--- ssh: "%s" ---' % command)
print(' -- stdout --')
output = ''
for x in stdout:
output += x
sys.stdout.write(" | " + x)
ret = stdout.channel.recv_exit_status()
print(" -- stderr --")
for x in stderr:
sys.stdout.write(" | " + x)
if (not error_ok) and ret:
raise SSHException("Unable to %s" % command, ret)
print("--- done ---\n")
return ret, output
@contextlib.contextmanager
def open(self, path, mode):
ftp = self.client.open_sftp()
f = ftp.open(path, mode)
yield f
ftp.close()