| #!/usr/bin/env python3 |
| # Copyright (C) 2021 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. |
| |
| # This file should do the same thing when being invoked in any of these ways: |
| # ./traceconv |
| # python traceconv |
| # bash traceconv |
| # cat ./traceconv | bash |
| # cat ./traceconv | python - |
| |
| BASH_FALLBACK = """ " |
| exec python3 - "$@" <<'#'EOF |
| #""" |
| |
| TOOL_NAME = 'trace_to_text' |
| |
| # BEGIN_SECTION_GENERATED_BY(roll-prebuilts) |
| # Revision: v20.1 |
| PERFETTO_PREBUILT_MANIFEST = [{ |
| 'tool': |
| 'trace_to_text', |
| 'arch': |
| 'mac-amd64', |
| 'file_name': |
| 'trace_to_text', |
| 'file_size': |
| 7136208, |
| 'url': |
| 'https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v20.1/mac-amd64/trace_to_text', |
| 'sha256': |
| '2a4cdaf2884639a5c80ba99f8da82e2684151d319524eb9f40498418c1df2b4e', |
| 'platform': |
| 'darwin', |
| 'machine': ['x86_64'] |
| }, { |
| 'tool': |
| 'trace_to_text', |
| 'arch': |
| 'linux-amd64', |
| 'file_name': |
| 'trace_to_text', |
| 'file_size': |
| 7652480, |
| 'url': |
| 'https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v20.1/linux-amd64/trace_to_text', |
| 'sha256': |
| '9b59a562e9289fa683dfff296183e35bc95fe3eba7b382e07e32d0b9c6c19eca', |
| 'platform': |
| 'linux', |
| 'machine': ['x86_64'] |
| }, { |
| 'tool': |
| 'trace_to_text', |
| 'arch': |
| 'windows-amd64', |
| 'file_name': |
| 'trace_to_text.exe', |
| 'file_size': |
| 6580224, |
| 'url': |
| 'https://commondatastorage.googleapis.com/perfetto-luci-artifacts/v20.1/windows-amd64/trace_to_text.exe', |
| 'sha256': |
| '6bda73d8e887a45716fd9a6fd80033d9ea02253f59d9c7693765134a43076aa4', |
| 'platform': |
| 'win32', |
| 'machine': ['amd64'] |
| }] |
| |
| |
| # DO NOT EDIT. If you wish to make edits to this code, you need to change only |
| # //tools/get_perfetto_prebuilt.py and run /tools/roll-prebuilts to regenerate |
| # all the others scripts this is embedded into. |
| def get_perfetto_prebuilt(tool_name, soft_fail=False, arch=None): |
| """ Downloads the prebuilt, if necessary, and returns its path on disk. """ |
| |
| # The first time this is invoked, it downloads the |url| and caches it into |
| # ~/.perfetto/prebuilts/$tool_name. On subsequent invocations it just runs the |
| # cached version. |
| def download_or_get_cached(file_name, url, sha256): |
| import os, hashlib, subprocess |
| dir = os.path.join( |
| os.path.expanduser('~'), '.local', 'share', 'perfetto', 'prebuilts') |
| os.makedirs(dir, exist_ok=True) |
| bin_path = os.path.join(dir, file_name) |
| sha256_path = os.path.join(dir, file_name + '.sha256') |
| needs_download = True |
| |
| # Avoid recomputing the SHA-256 on each invocation. The SHA-256 of the last |
| # download is cached into file_name.sha256, just check if that matches. |
| if os.path.exists(bin_path) and os.path.exists(sha256_path): |
| with open(sha256_path, 'rb') as f: |
| digest = f.read().decode() |
| if digest == sha256: |
| needs_download = False |
| |
| if needs_download: |
| # Either the filed doesn't exist or the SHA256 doesn't match. |
| tmp_path = bin_path + '.tmp' |
| print('Downloading ' + url) |
| subprocess.check_call(['curl', '-f', '-L', '-#', '-o', tmp_path, url]) |
| with open(tmp_path, 'rb') as fd: |
| actual_sha256 = hashlib.sha256(fd.read()).hexdigest() |
| if actual_sha256 != sha256: |
| raise Exception('Checksum mismatch for %s (actual: %s, expected: %s)' % |
| (url, actual_sha256, sha256)) |
| os.chmod(tmp_path, 0o755) |
| os.rename(tmp_path, bin_path) |
| with open(sha256_path, 'w') as f: |
| f.write(sha256) |
| return bin_path |
| # --- end of download_or_get_cached() --- |
| |
| # --- get_perfetto_prebuilt() function starts here. --- |
| import os, platform, sys |
| plat = sys.platform.lower() |
| machine = platform.machine().lower() |
| manifest_entry = None |
| for entry in PERFETTO_PREBUILT_MANIFEST: |
| # If the caller overrides the arch, just match that (for Android prebuilts). |
| if arch and entry.get('arch') == arch: |
| manifest_entry = entry |
| break |
| # Otherwise guess the local machine arch. |
| if entry.get('tool') == tool_name and entry.get( |
| 'platform') == plat and machine in entry.get('machine', []): |
| manifest_entry = entry |
| break |
| if manifest_entry is None: |
| if soft_fail: |
| return None |
| raise Exception( |
| ('No prebuilts available for %s-%s\n' % (plat, machine)) + |
| 'See https://perfetto.dev/docs/contributing/build-instructions') |
| |
| return download_or_get_cached( |
| file_name=manifest_entry['file_name'], |
| url=manifest_entry['url'], |
| sha256=manifest_entry['sha256']) |
| |
| |
| # END_SECTION_GENERATED_BY(roll-prebuilts) |
| |
| if __name__ == '__main__': |
| import sys, os |
| bin_path = get_perfetto_prebuilt(TOOL_NAME) |
| os.execv(bin_path, [bin_path] + sys.argv[1:]) |
| |
| #EOF |