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llvm-premerge-checks/scripts/steps.py

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#!/usr/bin/env python3
# Copyright 2020 Google LLC
#
# Licensed under the the Apache License v2.0 with LLVM Exceptions (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://llvm.org/LICENSE.txt
#
# 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.
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import io
import json
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import logging
import os
from typing import List
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from exec_utils import watch_shell
import yaml
def generic_linux(projects: str, check_diff: bool) -> List:
if os.getenv('ph_skip_linux') is not None:
return []
scripts_refspec = os.getenv("ph_scripts_refspec", "main")
no_cache = os.getenv('ph_no_cache') is not None
log_level = os.getenv('ph_log_level', 'WARNING')
linux_agents = {'queue': 'linux'}
t = os.getenv('ph_linux_agents')
if t is not None:
linux_agents = json.loads(t)
commands = [
'set -euo pipefail',
'ccache --clear' if no_cache else '',
'ccache --zero-stats',
'ccache --show-config',
'mkdir -p artifacts',
'dpkg -l >> artifacts/packages.txt',
*checkout_scripts('linux', scripts_refspec),
'set +e',
]
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if check_diff:
commands.extend([
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'$${SRC}/scripts/premerge_checks.py --check-clang-format --check-clang-tidy '
f'--projects="{projects}" --log-level={log_level}',
])
else:
commands.extend([
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f'$${{SRC}}/scripts/premerge_checks.py --projects="{projects}" --log-level={log_level}'
])
commands.extend([
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'EXIT_STATUS=$$?',
'echo "--- ccache stats"',
'ccache --print-stats',
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'exit $$EXIT_STATUS',
])
linux_buld_step = {
'label': ':linux: x64 debian',
'key': 'linux',
'commands': commands,
'artifact_paths': ['artifacts/**/*', '*_result.json', 'build/test-results.xml'],
'agents': linux_agents,
'timeout_in_minutes': 120,
'retry': {'automatic': [
{'exit_status': -1, 'limit': 2}, # Agent lost
{'exit_status': 255, 'limit': 2}, # Forced agent shutdown
]},
}
return [linux_buld_step]
def generic_windows(projects: str) -> List:
if os.getenv('ph_skip_windows') is not None:
return []
scripts_refspec = os.getenv("ph_scripts_refspec", "main")
no_cache = os.getenv('ph_no_cache') is not None
log_level = os.getenv('ph_log_level', 'WARNING')
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clear_sccache = 'powershell -command "sccache --stop-server; echo $$env:SCCACHE_DIR; ' \
'Remove-Item -Recurse -Force -ErrorAction Ignore $$env:SCCACHE_DIR; ' \
'sccache --start-server"'
win_agents = {'queue': 'windows'}
t = os.getenv('ph_windows_agents')
if t is not None:
win_agents = json.loads(t)
windows_buld_step = {
'label': ':windows: x64 windows',
'key': 'windows',
'commands': [
clear_sccache if no_cache else '',
'sccache --zero-stats',
*checkout_scripts('windows', scripts_refspec),
'powershell -command "'
f'%SRC%/scripts/premerge_checks.py --projects=\'{projects}\' --log-level={log_level}; '
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'$$exit=$$?;'
'sccache --show-stats;'
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'if ($$exit) {'
' echo success;'
' exit 0; } '
'else {'
' echo failure;'
' exit 1;'
'}"',
],
'artifact_paths': ['artifacts/**/*', '*_result.json', 'build/test-results.xml'],
'agents': win_agents,
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'timeout_in_minutes': 120,
'retry': {'automatic': [
{'exit_status': -1, 'limit': 2}, # Agent lost
{'exit_status': 255, 'limit': 2}, # Forced agent shutdown
]},
}
return [windows_buld_step]
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def from_shell_output(command) -> []:
"""
Executes shell command and parses stdout as multidoc yaml file, see
https://buildkite.com/docs/agent/v3/cli-pipeline#pipeline-format.
:param command: command, may include env variables
:return: all 'steps' that defined in the result ("env" section is ignored).
Non-zero exit code and malformed YAML produces empty result.
"""
path = os.path.expandvars(command)
logging.debug(f'invoking "{path}"')
out = io.BytesIO()
err = io.BytesIO()
rc = watch_shell(out.write, err.write, path)
logging.debug(f'exit code: {rc}, stdout: "{out.getvalue().decode()}", stderr: "{err.getvalue().decode()}"')
steps = []
if rc != 0:
logging.error(
f'{path} returned non-zero code {rc}, stdout: "{out.getvalue().decode()}", stderr: "{err.getvalue().decode()}"')
return steps
try:
for part in yaml.safe_load_all(out.getvalue()):
part.setdefault('steps', [])
steps.extend(part['steps'])
except yaml.YAMLError as e:
logging.error(f'''"{path}" produced malformed YAML, exception:
{e}
stdout: >>>{out.getvalue().decode()}>>>''')
return steps
def checkout_scripts(target_os: str, scripts_refspec: str) -> []:
if target_os == 'windows':
return [
'set SRC=%BUILDKITE_BUILD_PATH%/llvm-premerge-checks',
'rm -rf %SRC%',
'git clone --depth 1 https://github.com/google/llvm-premerge-checks.git %SRC%',
'cd %SRC%',
f'git fetch origin "{scripts_refspec}":x',
'git checkout x',
'echo llvm-premerge-checks commit:',
'git rev-parse HEAD',
'pip install -q -r %SRC%/scripts/requirements.txt',
'cd %BUILDKITE_BUILD_CHECKOUT_PATH%',
]
return [
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'export SRC=$${BUILDKITE_BUILD_PATH}/llvm-premerge-checks',
'rm -rf $${SRC}',
'git clone --depth 1 https://github.com/google/llvm-premerge-checks.git "$${SRC}"',
'cd $${SRC}',
f'git fetch origin "{scripts_refspec}":x',
'git checkout x',
'echo "llvm-premerge-checks commit"',
'git rev-parse HEAD',
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'pip install -q -r $${SRC}/scripts/requirements.txt',
'cd "$$BUILDKITE_BUILD_CHECKOUT_PATH"',
]