| #!/usr/bin/env python3 |
| # Copyright (C) 2022 The Android Open Source Project |
| # |
| # 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. |
| |
| import os |
| import socket |
| import subprocess |
| import tempfile |
| from typing import Tuple |
| from urllib import request |
| |
| from perfetto.trace_uri_resolver.path import PathUriResolver |
| from perfetto.trace_uri_resolver.registry import ResolverRegistry |
| |
| |
| # URL to download script to run trace_processor |
| SHELL_URL = 'http://get.perfetto.dev/trace_processor' |
| |
| |
| class PlatformDelegate: |
| """Abstracts operations which can vary based on platform.""" |
| |
| def get_resource(self, file: str) -> bytes: |
| ws = os.path.dirname(__file__) |
| with open(os.path.join(ws, file), 'rb') as x: |
| return x.read() |
| |
| def get_shell_path(self, bin_path: str) -> str: |
| if bin_path is not None: |
| if not os.path.isfile(bin_path): |
| raise Exception('Path to binary is not valid') |
| return bin_path |
| |
| with tempfile.NamedTemporaryFile(delete=False) as file: |
| req = request.Request(SHELL_URL) |
| with request.urlopen(req) as req: |
| file.write(req.read()) |
| if os.name != 'nt': |
| subprocess.check_output(['chmod', '+x', file.name]) |
| return file.name |
| |
| def get_bind_addr(self, port: int) -> Tuple[str, int]: |
| if port: |
| return 'localhost', port |
| |
| free_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) |
| free_socket.bind(('', 0)) |
| free_socket.listen(5) |
| port = free_socket.getsockname()[1] |
| free_socket.close() |
| return 'localhost', port |
| |
| def default_resolver_registry(self) -> ResolverRegistry: |
| return ResolverRegistry(resolvers=[PathUriResolver]) |