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import paramiko
from cloud import common
TIMEOUT = 600
LOG = common.LOG
class SSHClient(object):
def __init__(self, host, username, password):
self.host = host
self.username = username
self.password = password
self.client = None
def open(self, timeout=TIMEOUT):
self.client = paramiko.SSHClient()
self.client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
self.client.connect(self.host, username=self.username,
password=self.password, timeout=timeout)
def close(self):
if self.client is not None:
self.client.close()
self.client = None
def execute(self, command, sudo=False, timeout=TIMEOUT):
if sudo and self.username != 'root':
command = "sudo -S -p '' %s" % command
stdin, stdout, stderr = self.client.exec_command(command,
timeout=timeout)
if sudo:
stdin.write(self.password + '\n')
stdin.flush()
return ''.join(''.join(stderr.readlines()) +
''.join(stdout.readlines()))
def run(self, command):
transport = self.client.get_transport()
transport.set_keepalive(1)
chan = transport.open_session()
chan.exec_command(command)
while not chan.exit_status_ready():
if chan.recv_ready():
data = chan.recv(1024)
while data:
print data
data = chan.recv(1024)
if chan.recv_stderr_ready():
error_buff = chan.recv_stderr(1024)
while error_buff:
print error_buff
error_buff = chan.recv_stderr(1024)
exit_status = chan.recv_exit_status()
LOG.debug('Exit status %s' % exit_status)
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