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#!/usr/bin/env python
# Copyright (c) 2016 Cisco and/or its affiliates.
# 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.
"""This script provides copy and installation of VPP build deb packages.
As destinations are used all DUT nodes from the topology file."""
import sys
import argparse
from yaml import load
from resources.libraries.python.ssh import SSH
def ssh_no_error(ssh, cmd, sudo=False):
"""Execute a command over ssh channel, and log and exit if the command
fails.
:param ssh: SSH() object connected to a node.
:param cmd: Command line to execute on remote node.
:type ssh: SSH() object
:type cmd: str
:return: stdout from the SSH command.
:rtype: str
"""
if sudo:
ret, stdo, stde = ssh.exec_command_sudo(cmd)
else:
ret, stdo, stde = ssh.exec_command(cmd)
if ret != 0:
print 'Command execution failed: "{}"'.format(cmd)
print 'stdout: {0}'.format(stdo)
print 'stderr: {0}'.format(stde)
raise RuntimeError('Unexpected ssh command failure')
return stdo
def ssh_ignore_error(ssh, cmd, sudo=False):
"""Execute a command over ssh channel, ignore errors.
:param ssh: SSH() object connected to a node.
:param cmd: Command line to execute on remote node.
:type ssh: SSH() object
:type cmd: str
:return: stdout from the SSH command.
:rtype: str
"""
if sudo:
ret, stdo, stde = ssh.exec_command_sudo(cmd)
else:
ret, stdo, stde = ssh.exec_command(cmd)
if ret != 0:
print 'Command execution failed: "{}"'.format(cmd)
print 'stdout: {0}'.format(stdo)
print 'stderr: {0}'.format(stde)
return stdo
def main():
"""Copy and installation of VPP packages."""
parser = argparse.ArgumentParser()
parser.add_argument("-t", "--topo", required=True,
help="Topology file")
parser.add_argument("-d", "--directory", required=True,
help="Installation directory")
parser.add_argument("-p", "--packages", required=False, nargs='+',
help="Packages paths to copy")
parser.add_argument("-c", "--cancel", help="Cancel installation",
action="store_true")
args = parser.parse_args()
topology_file = args.topo
packages = args.packages
install_dir = args.directory
cancel_installation = args.cancel
work_file = open(topology_file)
topology = load(work_file.read())['nodes']
ssh = SSH()
for node in topology:
if topology[node]['type'] == "DUT":
print "###TI host: {}".format(topology[node]['host'])
ssh.connect(topology[node])
if cancel_installation:
# Remove installation directory on DUT
cmd = "rm -r {}".format(install_dir)
stdout = ssh_ignore_error(ssh, cmd)
print "###TI {}".format(stdout)
cmd = "dpkg -l | grep vpp"
ret, _, _ = ssh.exec_command(cmd)
if ret == 0:
# Try to fix interrupted installations
cmd = 'dpkg --configure -a'
stdout = ssh_no_error(ssh, cmd, sudo=True)
print "###TI {}".format(stdout)
# Try to remove installed vpp.* packages
cmd = 'apt-get purge -y "vpp.*"'
stdout = ssh_no_error(ssh, cmd, sudo=True)
print "###TI {}".format(stdout)
else:
# Create installation directory on DUT
cmd = "mkdir {}".format(install_dir)
stdout = ssh_no_error(ssh, cmd)
print "###TI {}".format(stdout)
# Copy packages from local path to installation dir
for deb in packages:
print "###TI scp: {}".format(deb)
ssh.scp(local_path=deb, remote_path=install_dir)
cmd = "dpkg -l | grep vpp"
ret, _, _ = ssh.exec_command(cmd)
if ret == 0:
# Try to fix interrupted installations
cmd = 'dpkg --configure -a'
stdout = ssh_no_error(ssh, cmd, sudo=True)
print "###TI {}".format(stdout)
# Try to remove installed vpp.* packages
cmd = 'apt-get purge -y "vpp.*"'
stdout = ssh_no_error(ssh, cmd, sudo=True)
print "###TI {}".format(stdout)
# Installation of VPP deb packages
cmd = "dpkg -i --force-all {}/*.deb".format(install_dir)
stdout = ssh_no_error(ssh, cmd, sudo=True)
print "###TI {}".format(stdout)
if __name__ == "__main__":
sys.exit(main())
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