67 lines
2.4 KiB
Python
67 lines
2.4 KiB
Python
# Copyright 2019 Robert Bosch GmbH
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Module containing parsing functions for tracing commands."""
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import argparse
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import time
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from . import names
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class DefaultArgValueCompleter:
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"""Callable returning an arg's default value."""
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def __init__(self, arg):
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default = arg.default
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self.list = default if isinstance(default, list) else [default]
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def __call__(self, **kwargs):
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return self.list
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def parse_args():
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"""
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Parse args for tracing.
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"""
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parser = argparse.ArgumentParser(description='Setup and launch an LTTng tracing session.')
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add_arguments(parser)
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return parser.parse_args()
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def add_arguments(parser):
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parser.add_argument(
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'--session-name', '-s', dest='session_name',
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default=f'session-{time.strftime("%Y%m%d%H%M%S")}',
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help='the name of the tracing session (default: session-YYYYMMDDHHMMSS)')
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parser.add_argument(
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'--path', '-p', dest='path',
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default='/tmp',
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help='path of the base directory for trace data (default: %(default)s)')
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arg = parser.add_argument(
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'--ust', '-u', nargs='*', dest='events_ust', default=names.DEFAULT_EVENTS_ROS,
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help='the ROS UST events to enable (default: all events) '
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'[to disable all UST events, '
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'provide this flag without any event name]')
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arg.completer = DefaultArgValueCompleter(arg)
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arg = parser.add_argument(
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'--kernel', '-k', nargs='*', dest='events_kernel',
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default=names.DEFAULT_EVENTS_KERNEL,
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help='the kernel events to enable (default: all events) '
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'[to disable all UST events, '
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'provide this flag without any event name]')
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arg.completer = DefaultArgValueCompleter(arg)
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parser.add_argument(
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'--list', '-l', dest='list', action='store_true',
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help='display lists of enabled events (default: %(default)s)')
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