| #!/usr/bin/env python |
| # |
| # Copyright 2015 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| # |
| # This script was originally written by Alok Priyadarshi (alokp@) |
| # with some minor local modifications. |
| |
| import contextlib |
| import json |
| import logging |
| import optparse |
| import os |
| import sys |
| import websocket |
| |
| from tracinglib import TracingBackend, TracingBackendAndroid, TracingClient |
| |
| @contextlib.contextmanager |
| def Connect(options): |
| if options.adb_device: |
| backend = TracingBackendAndroid(options.adb_device) |
| else: |
| backend = TracingBackend(options.device, options.port, 10, 0) |
| |
| try: |
| backend.Connect() |
| yield backend |
| finally: |
| backend.Disconnect() |
| |
| |
| def GetOutputFilePath(options): |
| filepath = os.path.expanduser(options.output) if options.output \ |
| else os.path.join(os.getcwd(), 'trace.json') |
| |
| dirname = os.path.dirname(filepath) |
| if dirname: |
| if not os.path.exists(dirname): |
| os.makedirs(dirname) |
| else: |
| filepath = os.path.join(os.getcwd(), filepath) |
| |
| return filepath |
| |
| |
| def _CreateOptionParser(): |
| parser = optparse.OptionParser(description='Record about://tracing profiles ' |
| 'from any running instance of Chrome.') |
| parser.add_option( |
| '-v', '--verbose', help='Verbose logging.', action='store_true') |
| parser.add_option( |
| '-p', '--port', help='Remote debugging port.', type='int', default=9222) |
| parser.add_option( |
| '-d', '--device', help='Device ip address.', type='string', |
| default='127.0.0.1') |
| parser.add_option( |
| '-s', '--adb-device', help='Device serial for adb.', type='string') |
| |
| tracing_opts = optparse.OptionGroup(parser, 'Tracing options') |
| tracing_opts.add_option( |
| '-c', '--category-filter', |
| help='Apply filter to control what category groups should be traced.', |
| type='string', |
| default='"*"') |
| tracing_opts.add_option( |
| '--record-continuously', |
| help='Keep recording until stopped. The trace buffer is of fixed size ' |
| 'and used as a ring buffer. If this option is omitted then ' |
| 'recording stops when the trace buffer is full.', |
| action='store_true') |
| parser.add_option_group(tracing_opts) |
| |
| output_options = optparse.OptionGroup(parser, 'Output options') |
| output_options.add_option( |
| '-o', '--output', |
| help='Save trace output to file.') |
| parser.add_option_group(output_options) |
| |
| return parser |
| |
| |
| def _ProcessOptions(options): |
| websocket.enableTrace(options.verbose) |
| |
| |
| def main(): |
| parser = _CreateOptionParser() |
| options, _args = parser.parse_args() |
| _ProcessOptions(options) |
| |
| with Connect(options) as tracing_backend: |
| tracing_backend.StartTracing(options.category_filter, |
| options.record_continuously) |
| raw_input('Capturing trace. Press Enter to stop...') |
| filepath = GetOutputFilePath(options) |
| tracing_backend.StopTracing(filepath) |
| |
| print('Done') |
| print('Trace written to file://%s' % filepath) |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |