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e678a4552a
Increase a bit the timeout for ssh commands and also write in the output that the command timed out (it's easier to see that in a test fail than checking the ssh log) (From OE-Core rev: 652a1762c8adc3b8cb1c6db2ee4a5234a7436c8d) Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
106 lines
4.0 KiB
Python
106 lines
4.0 KiB
Python
# Copyright (C) 2013 Intel Corporation
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#
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# Released under the MIT license (see COPYING.MIT)
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# Provides a class for setting up ssh connections,
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# running commands and copying files to/from a target.
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# It's used by testimage.bbclass and tests in lib/oeqa/runtime.
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import subprocess
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import time
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import os
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class SSHControl(object):
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def __init__(self, host=None, timeout=300, logfile=None):
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self.host = host
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self.timeout = timeout
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self._out = ''
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self._ret = 126
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self.logfile = logfile
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def log(self, msg):
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if self.logfile:
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with open(self.logfile, "a") as f:
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f.write("%s\n" % msg)
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def _internal_run(self, cmd):
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# We need this for a proper PATH
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cmd = ". /etc/profile; " + cmd
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command = ['ssh', '-o', 'UserKnownHostsFile=/dev/null', '-o', 'StrictHostKeyChecking=no', '-l', 'root', self.host, cmd ]
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self.log("[Running]$ %s" % " ".join(command))
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# ssh hangs without os.setsid
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proc = subprocess.Popen(command, shell=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, preexec_fn=os.setsid)
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return proc
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def run(self, cmd, timeout=None):
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"""Run cmd and get it's return code and output.
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Let it run for timeout seconds and then terminate/kill it,
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if time is 0 will let cmd run until it finishes.
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Time can be passed to here or can be set per class instance."""
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if self.host:
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sshconn = self._internal_run(cmd)
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else:
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raise Exception("Remote IP hasn't been set: '%s'" % actualcmd)
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if timeout == 0:
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self._out = sshconn.communicate()[0]
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self._ret = sshconn.poll()
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else:
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if timeout is None:
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tdelta = self.timeout
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else:
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tdelta = timeout
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endtime = time.time() + tdelta
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while sshconn.poll() is None and time.time() < endtime:
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time.sleep(1)
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# process hasn't returned yet
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if sshconn.poll() is None:
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self._ret = 255
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sshconn.terminate()
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sshconn.kill()
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self._out = sshconn.stdout.read()
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sshconn.stdout.close()
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self._out += "\n[!!! SSH command timed out after %d seconds and it was killed]" % tdelta
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self.log("[!!! SSH command timed out after %d seconds and it was killed]" % tdelta)
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else:
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self._out = sshconn.stdout.read()
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self._ret = sshconn.poll()
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# remove first line from output which is always smth like (unless return code is 255 - which is a ssh error):
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# Warning: Permanently added '192.168.7.2' (RSA) to the list of known hosts.
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if self._ret != 255:
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self._out = '\n'.join(self._out.splitlines()[1:])
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self.log("%s" % self._out)
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self.log("[SSH command returned]: %s" % self._ret)
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return (self._ret, self._out)
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def _internal_scp(self, cmd):
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self.log("[Running SCP]$ %s" % " ".join(cmd))
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scpconn = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, preexec_fn=os.setsid)
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out = scpconn.communicate()[0]
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ret = scpconn.poll()
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self.log("%s" % out)
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if ret != 0:
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# we raise an exception so that tests fail in setUp and setUpClass without a need for an assert
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raise Exception("Error running %s, output: %s" % ( " ".join(cmd), out))
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return (ret, out)
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def copy_to(self, localpath, remotepath):
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actualcmd = ['scp', '-o', 'UserKnownHostsFile=/dev/null', '-o', 'StrictHostKeyChecking=no', localpath, 'root@%s:%s' % (self.host, remotepath)]
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return self._internal_scp(actualcmd)
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def copy_from(self, remotepath, localpath):
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actualcmd = ['scp', '-o', 'UserKnownHostsFile=/dev/null', '-o', 'StrictHostKeyChecking=no', 'root@%s:%s' % (self.host, remotepath), localpath]
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return self._internal_scp(actualcmd)
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def get_status(self):
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return self._ret
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def get_output(self):
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return self._out
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