diff options
author | Brenda J. Butler <bjb@mojatatu.com> | 2018-02-14 14:09:23 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2018-02-15 15:38:33 -0500 |
commit | a13fedbe56fef141aff7d584eba2a08daaf613cc (patch) | |
tree | 97bff2cb9e944aed67e134bf7af1747119d72e07 /tools/testing/selftests/tc-testing/plugin-lib | |
parent | f6926e85eee9be08d05170af3a2266b8d7f9cdef (diff) |
tools: tc-testing: nsPlugin
Move the functionality of creating a namespace before the test suite
and destroying it afterwards to a plugin.
Signed-off-by: Brenda J. Butler <bjb@mojatatu.com>
Acked-by: Lucas Bates <lucasb@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/testing/selftests/tc-testing/plugin-lib')
-rw-r--r-- | tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py b/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py new file mode 100644 index 000000000000..a194b1af2b30 --- /dev/null +++ b/tools/testing/selftests/tc-testing/plugin-lib/nsPlugin.py @@ -0,0 +1,141 @@ +import os +import signal +from string import Template +import subprocess +import time +from TdcPlugin import TdcPlugin + +from tdc_config import * + +class SubPlugin(TdcPlugin): + def __init__(self): + self.sub_class = 'ns/SubPlugin' + super().__init__() + + def pre_suite(self, testcount, testidlist): + '''run commands before test_runner goes into a test loop''' + super().pre_suite(testcount, testidlist) + + if self.args.namespace: + self._ns_create() + + def post_suite(self, index): + '''run commands after test_runner goes into a test loop''' + super().post_suite(index) + if self.args.verbose: + print('{}.post_suite'.format(self.sub_class)) + + if self.args.namespace: + self._ns_destroy() + + def add_args(self, parser): + super().add_args(parser) + self.argparser_group = self.argparser.add_argument_group( + 'netns', + 'options for nsPlugin(run commands in net namespace)') + self.argparser_group.add_argument( + '-n', '--namespace', action='store_true', + help='Run commands in namespace') + return self.argparser + + def adjust_command(self, stage, command): + super().adjust_command(stage, command) + cmdform = 'list' + cmdlist = list() + + if not self.args.namespace: + return command + + if self.args.verbose: + print('{}.adjust_command'.format(self.sub_class)) + + if not isinstance(command, list): + cmdform = 'str' + cmdlist = command.split() + else: + cmdlist = command + if stage == 'setup' or stage == 'execute' or stage == 'verify' or stage == 'teardown': + if self.args.verbose: + print('adjust_command: stage is {}; inserting netns stuff in command [{}] list [{}]'.format(stage, command, cmdlist)) + cmdlist.insert(0, self.args.NAMES['NS']) + cmdlist.insert(0, 'exec') + cmdlist.insert(0, 'netns') + cmdlist.insert(0, 'ip') + else: + pass + + if cmdform == 'str': + command = ' '.join(cmdlist) + else: + command = cmdlist + + if self.args.verbose: + print('adjust_command: return command [{}]'.format(command)) + return command + + def _ns_create(self): + ''' + Create the network namespace in which the tests will be run and set up + the required network devices for it. + ''' + if self.args.namespace: + cmd = 'ip netns add {}'.format(self.args.NAMES['NS']) + self._exec_cmd('pre', cmd) + cmd = 'ip link add $DEV0 type veth peer name $DEV1' + self._exec_cmd('pre', cmd) + cmd = 'ip link set $DEV1 netns {}'.format(self.args.NAMES['NS']) + self._exec_cmd('pre', cmd) + cmd = 'ip link set $DEV0 up' + self._exec_cmd('pre', cmd) + cmd = 'ip -n {} link set $DEV1 up'.format(self.args.NAMES['NS']) + self._exec_cmd('pre', cmd) + if self.args.device: + cmd = 'ip link set $DEV2 netns {}'.format(self.args.NAMES['NS']) + self._exec_cmd('pre', cmd) + cmd = 'ip -n {} link set $DEV2 up'.format(self.args.NAMES['NS']) + self._exec_cmd('pre', cmd) + + def _ns_destroy(self): + ''' + Destroy the network namespace for testing (and any associated network + devices as well) + ''' + if self.args.namespace: + cmd = 'ip netns delete {}'.format(self.args.NAMES['NS']) + self._exec_cmd('post', cmd) + + def _exec_cmd(self, stage, command): + ''' + Perform any required modifications on an executable command, then run + it in a subprocess and return the results. + ''' + if '$' in command: + command = self._replace_keywords(command) + + self.adjust_command(stage, command) + if self.args.verbose: + print('_exec_cmd: command "{}"'.format(command)) + proc = subprocess.Popen(command, + shell=True, + stdout=subprocess.PIPE, + stderr=subprocess.PIPE, + env=ENVIR) + (rawout, serr) = proc.communicate() + + if proc.returncode != 0 and len(serr) > 0: + foutput = serr.decode("utf-8") + else: + foutput = rawout.decode("utf-8") + + proc.stdout.close() + proc.stderr.close() + return proc, foutput + + def _replace_keywords(self, cmd): + """ + For a given executable command, substitute any known + variables contained within NAMES with the correct values + """ + tcmd = Template(cmd) + subcmd = tcmd.safe_substitute(self.args.NAMES) + return subcmd |