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#!/usr/bin/env python3
# Copyright (C) 2019 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:
# ./trace_processor
# python trace_processor
# bash trace_processor
# cat ./trace_processor | bash
# cat ./trace_processor | python -
BASH_FALLBACK = """ "
exec python3 - "$@" <<'#'EOF
#"""
import hashlib
import os
import sys
import tempfile
import subprocess
import platform
TRACE_PROCESSOR_SHELL_SHAS = {
'linux': 'a3ce2cbf4cbe4f86cc10b02957db727cecfafae8',
'mac': 'c39a5be9a3831911ef2e50d66d11c12d877688f3',
}
TRACE_PROCESSOR_SHELL_PATH = tempfile.gettempdir()
TRACE_PROCESSOR_SHELL_BASE_URL = ('https://storage.googleapis.com/perfetto/')
def DownloadURL(url, out_file):
subprocess.check_call(['curl', '-L', '-#', '-o', out_file, url])
def check_hash(file_name, sha_value):
with open(file_name, 'rb') as fd:
file_hash = hashlib.sha1(fd.read()).hexdigest()
return file_hash == sha_value
def load_trace_processor_shell(platform):
sha_value = TRACE_PROCESSOR_SHELL_SHAS[platform]
file_name = 'trace_processor_shell-' + platform + '-' + sha_value
local_file = os.path.join(TRACE_PROCESSOR_SHELL_PATH, file_name)
if os.path.exists(local_file):
if not check_hash(local_file, sha_value):
os.remove(local_file)
else:
return local_file
url = TRACE_PROCESSOR_SHELL_BASE_URL + file_name
DownloadURL(url, local_file)
if not check_hash(local_file, sha_value):
os.remove(local_file)
raise ValueError("Invalid signature.")
os.chmod(local_file, 0o755)
return local_file
def main(argv):
os_name = None
if sys.platform.startswith('linux'):
os_name = 'linux'
elif sys.platform.startswith('darwin'):
os_name = 'mac'
else:
print("Invalid platform: {}".format(sys.platform))
return 1
arch = platform.machine()
if arch not in ['x86_64', 'amd64']:
print("Prebuilts are only available for x86_64 (found '{}' instead).".format(arch))
print("Follow https://perfetto.dev/docs/contributing/build-instructions to build locally.")
return 1
trace_processor_shell_binary = load_trace_processor_shell(os_name)
os.execv(trace_processor_shell_binary,
[trace_processor_shell_binary] + argv[1:])
if __name__ == '__main__':
sys.exit(main(sys.argv))
#EOF
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