1 # Copyright (c) 2016 Cisco and/or its affiliates.
2 # Licensed under the Apache License, Version 2.0 (the "License");
3 # you may not use this file except in compliance with the License.
4 # You may obtain a copy of the License at:
6 # http://www.apache.org/licenses/LICENSE-2.0
8 # Unless required by applicable law or agreed to in writing, software
9 # distributed under the License is distributed on an "AS IS" BASIS,
10 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 # See the License for the specific language governing permissions and
12 # limitations under the License.
14 """This module exists to provide setup utilities for the framework on topology
15 nodes. All tasks required to be run before the actual tests are started is
16 supposed to end up here.
19 from shlex import split
20 from subprocess import Popen, PIPE, call
21 from multiprocessing import Pool
22 from tempfile import NamedTemporaryFile
23 from os.path import basename
24 from os import environ
26 from robot.api import logger
27 from robot.libraries.BuiltIn import BuiltIn
29 from resources.libraries.python.ssh import SSH
30 from resources.libraries.python.constants import Constants as con
31 from resources.libraries.python.topology import NodeType
33 __all__ = ["SetupFramework"]
36 def pack_framework_dir():
37 """Pack the testing WS into temp file, return its name."""
40 directory = environ["TMPDIR"]
44 if directory is not None:
45 tmpfile = NamedTemporaryFile(suffix=".tgz", prefix="openvpp-testing-",\
46 dir="{0}".format(directory))
48 tmpfile = NamedTemporaryFile(suffix=".tgz", prefix="openvpp-testing-")
49 file_name = tmpfile.name
53 split("tar --exclude-vcs -zcf {0} .".format(file_name)),
54 stdout=PIPE, stderr=PIPE)
55 (stdout, stderr) = proc.communicate()
60 return_code = proc.wait()
62 raise Exception("Could not pack testing framework.")
67 def copy_tarball_to_node(tarball, node):
68 """Copy tarball file from local host to remote node.
70 :param tarball: Path to tarball to upload.
71 :param node: Dictionary created from topology.
76 logger.console('Copying tarball to {0}'.format(node['host']))
80 ssh.scp(tarball, "/tmp/")
83 def extract_tarball_at_node(tarball, node):
84 """Extract tarball at given node.
86 Extracts tarball using tar on given node to specific CSIT loocation.
88 :param tarball: Path to tarball to upload.
89 :param node: Dictionary created from topology.
94 logger.console('Extracting tarball to {0} on {1}'.format(
95 con.REMOTE_FW_DIR, node['host']))
99 cmd = 'sudo rm -rf {1}; mkdir {1} ; tar -zxf {0} -C {1}; ' \
100 'rm -f {0}'.format(tarball, con.REMOTE_FW_DIR)
101 (ret_code, _, stderr) = ssh.exec_command(cmd, timeout=30)
103 logger.error('Unpack error: {0}'.format(stderr))
104 raise Exception('Failed to unpack {0} at node {1}'.format(
105 tarball, node['host']))
108 def create_env_directory_at_node(node):
109 """Create fresh virtualenv to a directory, install pip requirements."""
110 logger.console('Extracting virtualenv, installing requirements.txt '
111 'on {0}'.format(node['host']))
114 (ret_code, stdout, stderr) = ssh.exec_command(
115 'cd {0} && rm -rf env && virtualenv --system-site-packages env && . env/bin/activate && '
116 'pip install -r requirements.txt'
117 .format(con.REMOTE_FW_DIR), timeout=100)
119 logger.error('Virtualenv creation error: {0}'.format(stdout + stderr))
120 raise Exception('Virtualenv setup failed')
122 logger.console('Virtualenv created on {0}'.format(node['host']))
124 #pylint: disable=broad-except
125 def setup_node(args):
126 """Run all set-up methods for a node.
128 This method is used as map_async parameter. It receives tuple with all
129 parameters as passed to map_async function.
131 :param args: All parameters needed to setup one node.
134 :return: True - success, False - error
137 tarball, remote_tarball, node = args
139 copy_tarball_to_node(tarball, node)
140 extract_tarball_at_node(remote_tarball, node)
141 if node['type'] == NodeType.TG:
142 create_env_directory_at_node(node)
143 except Exception as exc:
144 logger.error("Node setup failed, error:'{0}'".format(exc.message))
147 logger.console('Setup of node {0} done'.format(node['host']))
150 def delete_local_tarball(tarball):
151 """Delete local tarball to prevent disk pollution.
153 :param tarball: Path to tarball to upload.
157 call(split('sh -c "rm {0} > /dev/null 2>&1"'.format(tarball)))
160 class SetupFramework(object): # pylint: disable=too-few-public-methods
161 """Setup suite run on topology nodes.
163 Many VAT/CLI based tests need the scripts at remote hosts before executing
164 them. This class packs the whole testing directory and copies it over
165 to all nodes in topology under /tmp/
169 def setup_framework(nodes):
170 """Pack the whole directory and extract in temp on each node."""
172 tarball = pack_framework_dir()
173 msg = 'Framework packed to {0}'.format(tarball)
176 remote_tarball = "/tmp/{0}".format(basename(tarball))
178 # Turn off logging since we use multiprocessing
179 log_level = BuiltIn().set_log_level('NONE')
180 params = ((tarball, remote_tarball, node) for node in nodes.values())
181 pool = Pool(processes=len(nodes))
182 result = pool.map_async(setup_node, params)
187 BuiltIn().set_log_level(log_level)
190 'Executed node setups in parallel, waiting for processes to end')
193 logger.info('Results: {0}'.format(result.get()))
195 logger.trace('Test framework copied to all topology nodes')
196 delete_local_tarball(tarball)
197 logger.console('All nodes are ready')