aboutsummaryrefslogtreecommitdiffstats
path: root/resources/libraries/python/TrafficScriptExecutor.py
blob: ee296958127323696db9823172998448905b3795 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
# 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.

"""Traffic script executor library."""

from constants import Constants
from ssh import SSH
from robot.api import logger

__all__ = ['TrafficScriptExecutor']


class TrafficScriptExecutor(object):
    """Traffic script executor utilities."""

    @staticmethod
    def _escape(string):
        """Escape quotation mark and dollar mark for shell command.

           :param string: String to escape.
           :type string: str
           :return: Escaped string.
           :rtype: str
        """
        return string.replace('"', '\\"').replace("$", "\\$")

    @staticmethod
    def run_traffic_script_on_node(script_file_name, node, script_args,
                                   timeout=10):
        """Run traffic script on the TG node.

           :param script_file_name: Traffic script name
           :param node: Node to run traffic script on.
           :param script_args: Traffic scripts arguments.
           :param timeout: Timeout (optional).
           :type script_file_name: str
           :type node: dict
           :type script_args: str
           :type timeout: int
        """
        logger.trace("{}".format(timeout))
        ssh = SSH()
        ssh.connect(node)
        cmd = ("cd {}; virtualenv env && " +
               "export PYTHONPATH=${{PWD}}; " +
               ". ${{PWD}}/env/bin/activate; " +
               "resources/traffic_scripts/{} {}") \
                  .format(Constants.REMOTE_FW_DIR, script_file_name,
                          script_args)
        (ret_code, stdout, stderr) = ssh.exec_command_sudo(
            'sh -c "{}"'.format(TrafficScriptExecutor._escape(cmd)),
            timeout=timeout)
        logger.debug("stdout: {}".format(stdout))
        logger.debug("stderr: {}".format(stderr))
        logger.debug("ret_code: {}".format(ret_code))
        if ret_code != 0:
            raise Exception("Traffic script execution failed")

    @staticmethod
    def traffic_script_gen_arg(rx_if, tx_if, src_mac, dst_mac, src_ip, dst_ip):
        """Generate traffic script basic arguments string.

           :param rx_if: Interface that receives traffic.
           :param tx_if: Interface that sends traffic.
           :param src_mac: Source MAC address.
           :param dst_mac: Destination MAC address.
           :param src_ip: Source IP address.
           :param dst_ip: Destination IP address.
           :type rx_if: str
           :type tx_if: str
           :type src_mac: str
           :type dst_mac: str
           :type src_ip: str
           :type dst_ip: str
           :return: Traffic script arguments string.
           :rtype: str
        """
        args = '--rx_if {0} --tx_if {1} --src_mac {2} --dst_mac {3} --src_ip' \
            ' {4} --dst_ip {5}'.format(rx_if, tx_if, src_mac, dst_mac, src_ip,
                                       dst_ip)
        return args