Re: [PATCH] Acceptance tests: use avocado.utils.ssh for SSH interaction

[Cleber Rosa <crosa@redhat.com>]

On Fri, Sep 20, 2019 at 04:16:54PM -0300, Eduardo Habkost wrote:
> On Thu, Sep 19, 2019 at 06:59:05PM -0400, Cleber Rosa wrote:
> > This replaces paramiko with avocado.utils.ssh module, which is based
> > on a (open)ssh binary, supposedly more ubiquitous.
> > 
> > Signed-off-by: Cleber Rosa <crosa@redhat.com>
> 
> I just noticed that I have some patches on python-next that never
> went to a pull request (sorry for the oversight!).
> 
> I assume I should remove
> https://lore.kernel.org/qemu-devel/20190830184033.7630-1-philmd@redhat.com/
> from the queue?
>

Yep, I believe so (assuming this one gets reviewed before the next
pull request).

- Cleber.

> > ---
> >  tests/acceptance/linux_ssh_mips_malta.py | 74 ++++++++----------------
> >  tests/requirements.txt                   |  3 +-
> >  2 files changed, 25 insertions(+), 52 deletions(-)
> > 
> > diff --git a/tests/acceptance/linux_ssh_mips_malta.py b/tests/acceptance/linux_ssh_mips_malta.py
> > index 134f10cac3..30c65568ce 100644
> > --- a/tests/acceptance/linux_ssh_mips_malta.py
> > +++ b/tests/acceptance/linux_ssh_mips_malta.py
> > @@ -9,13 +9,14 @@ import os
> >  import re
> >  import base64
> >  import logging
> > -import paramiko
> >  import time
> >  
> >  from avocado import skipIf
> > +from avocado import skipUnless
> >  from avocado_qemu import Test
> >  from avocado.utils import process
> >  from avocado.utils import archive
> > +from avocado.utils import ssh
> >  
> >  
> >  class LinuxSSH(Test):
> > @@ -26,35 +27,18 @@ class LinuxSSH(Test):
> >      VM_IP = '127.0.0.1'
> >  
> >      IMAGE_INFO = {
> > -        'be': {
> > -            'image_url': 'https://people.debian.org/~aurel32/qemu/mips/'
> > -                         'debian_wheezy_mips_standard.qcow2',
> > -            'image_hash': '8987a63270df67345b2135a6b7a4885a35e392d5',
> > -            'rsa_hostkey': b'AAAAB3NzaC1yc2EAAAADAQABAAABAQCca1VitiyLAdQOld'
> > -                           b'zT43IOEVJZ0wHD78GJi8wDAjMiYWUzNSSn0rXGQsINHuH5'
> > -                           b'IlF+kBZsHinb/FtKCAyS9a8uCHhQI4SuB4QhAb0+39MlUw'
> > -                           b'Mm0CLkctgM2eUUZ6MQMQvDlqnue6CCkxN62EZYbaxmby7j'
> > -                           b'CQa1125o1HRKBvdGm2zrJWxXAfA+f1v6jHLyE8Jnu83eQ+'
> > -                           b'BFY25G+Vzx1PVc3zQBwJ8r0NGTRqy2//oWQP0h+bMsgeFe'
> > -                           b'KH/J3RJM22vg6+I4JAdBFcxnK+l781h1FuRxOn4O/Xslbg'
> > -                           b'go6WtB4V4TOsw2E/KfxI5IZ/icxF+swVcnvF46Hf3uQc/0'
> > -                           b'BBqb',
> > -        },
> > -        'le': {
> > -            'image_url': 'https://people.debian.org/~aurel32/qemu/mipsel/'
> > -                         'debian_wheezy_mipsel_standard.qcow2',
> > -            'image_hash': '7866764d9de3ef536ffca24c9fb9f04ffdb45802',
> > -            'rsa_hostkey': b'AAAAB3NzaC1yc2EAAAADAQABAAABAQClXJlBT71HL5yKvv'
> > -                           b'gfC7jmxSWx5zSBCzET6CLZczwAafSIs7YKfNOy/dQTxhuk'
> > -                           b'yIGFUugZFoF3E9PzdhunuyvyTd56MPoNIqFbb5rGokwU5I'
> > -                           b'TOx3dBHZR0mClypL6MVrwe0bsiIb8GhF1zioNwcsaAZnAi'
> > -                           b'KfXStVDtXvn/kLLq+xLABYt48CC5KYWoFaCoICskLAY+qo'
> > -                           b'L+LWyAnQisj4jAH8VSaSKIImFpfkHWEXPhHcC4ZBlDKtnH'
> > -                           b'po9vhfCHgnfW3Pzrqmk8BI4HysqPFVmJWkJGlGUL+sGeg3'
> > -                           b'ZZolAYuDXGuBrw8ooPJq2v2dOH+z6dyD2q/ypmAbyPqj5C'
> > -                           b'rc8H',
> > -        },
> > -    }
> > +        'be': {'image_url': ('https://people.debian.org/~aurel32/qemu/mips/'
> > +                             'debian_wheezy_mips_standard.qcow2'),
> > +               'image_hash': '8987a63270df67345b2135a6b7a4885a35e392d5'},
> > +        'le': {'image_url': ('https://people.debian.org/~aurel32/qemu/mipsel/'
> > +                             'debian_wheezy_mipsel_standard.qcow2'),
> > +               'image_hash': '7866764d9de3ef536ffca24c9fb9f04ffdb45802'}
> > +        }
> > +
> > +
> > +    @skipUnless(ssh.SSH_CLIENT_BINARY, 'No SSH client available')
> > +    def setUp(self):
> > +        super(LinuxSSH, self).setUp()
> >  
> >      def wait_for_console_pattern(self, success_message,
> >                                   failure_message='Oops'):
> > @@ -78,23 +62,14 @@ class LinuxSSH(Test):
> >          self.log.debug("sshd listening on port:" + port)
> >          return port
> >  
> > -    def ssh_connect(self, username, password, rsa_hostkey_b64=None):
> > +    def ssh_connect(self, username, password):
> >          self.ssh_logger = logging.getLogger('ssh')
> > -        self.ssh_username = username
> > -        self.ssh_ps1 = '# ' if username is 'root' else '$ '
> > -        self.ssh_client = paramiko.SSHClient()
> >          port = self.get_portfwd()
> > -        if rsa_hostkey_b64:
> > -            rsa_hostkey_bin = base64.b64decode(rsa_hostkey_b64)
> > -            rsa_hostkey = paramiko.RSAKey(data = rsa_hostkey_bin)
> > -            ipport = '[%s]:%s' % (self.VM_IP, port)
> > -            self.ssh_logger.debug('ipport ' + ipport)
> > -            self.ssh_client.get_host_keys().add(ipport, 'ssh-rsa', rsa_hostkey)
> > +        self.ssh_session = ssh.Session(self.VM_IP, port=int(port),
> > +                                       user=username, password=password)
> >          for i in range(10):
> >              try:
> > -                self.ssh_client.connect(self.VM_IP, int(port),
> > -                                        username, password, banner_timeout=90)
> > -                self.ssh_logger.info("Entering interactive session.")
> > +                self.ssh_session.connect()
> >                  return
> >              except:
> >                  time.sleep(4)
> > @@ -102,15 +77,15 @@ class LinuxSSH(Test):
> >          self.fail("sshd timeout")
> >  
> >      def ssh_disconnect_vm(self):
> > -        self.ssh_client.close()
> > +        self.ssh_session.quit()
> >  
> >      def ssh_command(self, command, is_root=True):
> > -        self.ssh_logger.info(self.ssh_ps1 + command)
> > -        stdin, stdout, stderr = self.ssh_client.exec_command(command)
> > -        stdout_lines = [line.strip('\n') for line in stdout]
> > +        self.ssh_logger.info(command)
> > +        result = self.ssh_session.cmd(command)
> > +        stdout_lines = [line.rstrip() for line in result.stdout_text.splitlines()]
> >          for line in stdout_lines:
> >              self.ssh_logger.info(line)
> > -        stderr_lines = [line.strip('\n') for line in stderr]
> > +        stderr_lines = [line.rstrip() for line in result.stderr_text.splitlines()]
> >          for line in stderr_lines:
> >              self.ssh_logger.warning(line)
> >          return stdout_lines, stderr_lines
> > @@ -119,7 +94,6 @@ class LinuxSSH(Test):
> >          image_url = self.IMAGE_INFO[endianess]['image_url']
> >          image_hash = self.IMAGE_INFO[endianess]['image_hash']
> >          image_path = self.fetch_asset(image_url, asset_hash=image_hash)
> > -        rsa_hostkey_b64 = self.IMAGE_INFO[endianess]['rsa_hostkey']
> >  
> >          self.vm.set_machine('malta')
> >          self.vm.set_console()
> > @@ -138,7 +112,7 @@ class LinuxSSH(Test):
> >          self.wait_for_console_pattern(console_pattern)
> >          self.log.info('sshd ready')
> >  
> > -        self.ssh_connect('root', 'root', rsa_hostkey_b64=rsa_hostkey_b64)
> > +        self.ssh_connect('root', 'root')
> >  
> >      def shutdown_via_ssh(self):
> >          self.ssh_command('poweroff')
> > diff --git a/tests/requirements.txt b/tests/requirements.txt
> > index bd1f7590ed..a2a587223a 100644
> > --- a/tests/requirements.txt
> > +++ b/tests/requirements.txt
> > @@ -1,5 +1,4 @@
> >  # Add Python module requirements, one per line, to be installed
> >  # in the tests/venv Python virtual environment. For more info,
> >  # refer to: https://pip.pypa.io/en/stable/user_guide/#id1
> > -avocado-framework==68.0
> > -paramiko==2.4.2
> > +avocado-framework==72.0
> > -- 
> > 2.21.0
> > 
> > 
> 
> -- 
> Eduardo