734 lines
24 KiB
Python
Executable File
734 lines
24 KiB
Python
Executable File
#!/usr/bin/python3
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from typing import Dict, List, Union, Optional
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from pathlib import Path
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import contextlib
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import datetime
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import fcntl
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import logging
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import os
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import re
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import shutil
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import subprocess
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import time
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import yaml
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import cloud_build.image_tests
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PROG = 'cloud-build'
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# types
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PathLike = Union[Path, str]
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class Error(Exception):
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pass
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class BuildError(Error):
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def __init__(self, target: str, arch: str):
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self.target = target
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self.arch = arch
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def __str__(self):
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return f'Fail building of {self.target} {self.arch}'
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class MultipleBuildErrors(Error):
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def __init__(self, build_errors: List[BuildError]):
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self.build_errors = build_errors
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def __str__(self):
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s = 'Fail building of the following targets:\n'
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s += '\n'.join(f' {be.target} {be.arch}' for be in self.build_errors)
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return s
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class CB:
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"""class for building cloud images"""
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def __init__(
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self,
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config,
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*,
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data_dir: PathLike = None,
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no_tests: bool = False,
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no_sign: bool = False,
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create_remote_dirs: bool = False,
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tasks: dict = None,
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) -> None:
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self.initialized = False
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self._save_cwd = os.getcwd()
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self.no_tests = no_tests
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self.no_sign = no_sign
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self.parse_config(config)
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self._create_remote_dirs = create_remote_dirs
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if tasks is None:
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self.tasks = {}
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else:
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self.tasks = tasks
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if not data_dir:
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data_dir = (Path(self.expand_path(os.getenv('XDG_DATA_HOME',
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'~/.local/share')))
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/ f'{PROG}')
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else:
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data_dir = Path(data_dir)
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self.data_dir = data_dir
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self.checksum_command = 'sha256sum'
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self.images_dir = data_dir / 'images'
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self.work_dir = data_dir / 'work'
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self.out_dir = data_dir / 'out'
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self.service_default_state = 'enabled'
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self.created_scripts: List[Path] = []
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self._build_errors: List[BuildError] = []
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self.ensure_dirs()
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logging.basicConfig(
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filename=f'{data_dir}/{PROG}.log',
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format='%(levelname)s:%(asctime)s - %(message)s',
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)
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self.log = logging.getLogger(PROG)
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self.log.setLevel(self.log_level)
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self.ensure_run_once()
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self.info(f'Start {PROG}')
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self.initialized = True
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def __del__(self) -> None:
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if not self.initialized:
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if getattr(self, 'lock_file', False):
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self.lock_file.close()
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return
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def unlink(path):
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try:
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os.unlink(path)
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except FileNotFoundError:
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pass
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for name in self.created_scripts:
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unlink(name)
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unlink(self.work_dir / f'mkimage-profiles/conf.d/{PROG}.mk')
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os.chdir(self._save_cwd)
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try:
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self.info(f'Finish {PROG}')
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except FileNotFoundError:
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pass
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self.lock_file.close()
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def expand_path(self, path: PathLike):
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result = os.path.expanduser(os.path.expandvars(path))
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if isinstance(path, Path):
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return Path(result)
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else:
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return result
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def ensure_run_once(self):
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self.lock_file = open(self.data_dir / f'{PROG}.lock', 'w')
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try:
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fcntl.flock(self.lock_file.fileno(), fcntl.LOCK_EX | fcntl.LOCK_NB)
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except OSError: # already locked
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dd = self.data_dir
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msg = f'Program {PROG} already running in `{dd}` directory'
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self.error(msg)
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@contextlib.contextmanager
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def pushd(self, new_dir):
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previous_dir = os.getcwd()
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self.debug(f'Pushd to {new_dir}')
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os.chdir(new_dir)
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yield
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self.debug(f'Popd from {new_dir}')
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os.chdir(previous_dir)
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def parse_config(self, config: str) -> None:
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try:
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with open(config) as f:
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cfg = yaml.safe_load(f)
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except OSError as e:
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msg = f'Could not read config file `{e.filename}`: {e.strerror}'
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raise Error(msg)
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self.mkimage_profiles_git = self.expand_path(
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cfg.get('mkimage_profiles_git', '')
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)
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self.log_level = getattr(logging, cfg.get('log_level', 'INFO').upper())
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self._repository_url = cfg.get('repository_url',
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'copy:///space/ALT/{branch}')
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self.try_build_all = cfg.get('try_build_all', False)
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self.no_delete = cfg.get('no_delete', True)
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self.bad_arches = cfg.get('bad_arches', [])
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self.external_files = cfg.get('external_files')
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if self.external_files:
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self.external_files = self.expand_path(Path(self.external_files))
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rebuild_after = cfg.get('rebuild_after', {'days': 1})
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try:
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self.rebuild_after = datetime.timedelta(**rebuild_after)
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except TypeError as e:
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m = re.match(r"'([^']+)'", str(e))
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if m:
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arg = m.groups()[0]
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raise Error(f'Invalid key `{arg}` passed to rebuild_after')
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else:
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raise
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self._packages = cfg.get('packages', {})
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self._services = cfg.get('services', {})
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self._scripts = cfg.get('scripts', {})
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try:
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self._remote = self.expand_path(cfg['remote'])
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if not self.no_sign:
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self.key = cfg['key']
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if isinstance(self.key, int):
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self.key = '{:X}'.format(self.key)
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self._images = cfg['images']
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self._branches = cfg['branches']
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for _, branch in self._branches.items():
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branch['arches'] = {k: {} if v is None else v
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for k, v in branch['arches'].items()}
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except KeyError as e:
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msg = f'Required parameter {e} does not set in config'
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raise Error(msg)
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def info(self, msg: str) -> None:
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self.log.info(msg)
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def debug(self, msg: str) -> None:
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self.log.debug(msg)
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def error(self, arg: Union[str, Error]) -> None:
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if isinstance(arg, Error):
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err = arg
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else:
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err = Error(arg)
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self.log.error(err)
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raise err
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def remote(self, branch: str) -> str:
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return self._remote.format(branch=branch)
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def repository_url(self, branch: str, arch: str) -> str:
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url = self._branches[branch]['arches'][arch].get('repository_url')
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if url is None:
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url = self._branches[branch].get('repository_url',
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self._repository_url)
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return url.format(branch=branch, arch=arch)
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def call(
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self,
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cmd: List[str],
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*,
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stdout_to_file: str = '',
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fail_on_error: bool = True,
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) -> None:
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def maybe_fail(string: str, rc: int) -> None:
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if fail_on_error:
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if rc != 0:
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msg = 'Command `{}` failed with {} return code'.format(
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string,
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rc,
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)
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self.error(msg)
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# just_print = True
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just_print = False
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string = ' '.join(cmd)
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self.debug(f'Call `{string}`')
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if just_print:
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print(string)
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else:
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if stdout_to_file:
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# TODO rewrite using subprocess.run
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
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rc = p.wait()
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maybe_fail(string, rc)
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# TODO rewrite by passing f as stdout value
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with open(stdout_to_file, 'w') as f:
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if p.stdout:
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f.write(p.stdout.read().decode())
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if p.stdout is not None:
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p.stdout.close()
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else:
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# TODO rewrite using subprocess.run
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rc = subprocess.call(cmd)
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maybe_fail(string, rc)
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def ensure_dirs(self) -> None:
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for attr in dir(self):
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if attr.endswith('_dir'):
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value = getattr(self, attr)
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if isinstance(value, str) or isinstance(value, os.PathLike):
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os.makedirs(value, exist_ok=True)
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for branch in self.branches:
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os.makedirs(self.images_dir / branch, exist_ok=True)
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def generate_apt_files(self) -> None:
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apt_dir = self.work_dir / 'apt'
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os.makedirs(apt_dir, exist_ok=True)
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for branch in self.branches:
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for arch in self.arches_by_branch(branch):
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repo = self.repository_url(branch, arch)
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with open(f'{apt_dir}/apt.conf.{branch}.{arch}', 'w') as f:
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apt_conf = f'''
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Dir::Etc::main "/dev/null";
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Dir::Etc::parts "/var/empty";
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Dir::Etc::SourceList "{apt_dir}/sources.list.{branch}.{arch}";
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Dir::Etc::SourceParts "/var/empty";
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Dir::Etc::preferences "/dev/null";
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Dir::Etc::preferencesparts "/var/empty";
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'''.lstrip()
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f.write(apt_conf)
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with open(f'{apt_dir}/sources.list.{branch}.{arch}', 'w') as f:
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sources_list = f'rpm {repo} {arch} classic\n'
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if arch not in self.bad_arches:
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sources_list += f'rpm {repo} noarch classic\n'
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for task in self.tasks.get(branch.lower(), []):
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tr = 'http://git.altlinux.org'
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sources_list += f'rpm {tr} repo/{task}/{arch} task\n'
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f.write(sources_list)
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def escape_branch(self, branch: str) -> str:
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return re.sub(r'\.', '_', branch)
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def ensure_mkimage_profiles(self, update: bool = False) -> None:
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"""Checks that mkimage-profiles exists or clones it"""
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def add_recipe(variable: str, value: str) -> str:
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return f'\n\t@$(call add,{variable},{value})'
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url = self.mkimage_profiles_git
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if url == '':
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url = (
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'git://'
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+ 'git.altlinux.org/'
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+ 'people/mike/packages/mkimage-profiles.git'
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)
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os.chdir(self.work_dir)
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if os.path.isdir('mkimage-profiles'):
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if update:
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with self.pushd('mkimage-profiles'):
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self.info('Updating mkimage-profiles')
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self.call(['git', 'pull'], fail_on_error=False)
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else:
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self.info('Downloading mkimage-profiles')
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self.call(['git', 'clone', url, 'mkimage-profiles'])
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# create file with proper brandings
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with self.pushd('mkimage-profiles'):
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with open(f'conf.d/{PROG}.mk', 'w') as f:
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for image in self.images:
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target = self.target_by_image(image)
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for branch in self.branches:
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ebranch = self.escape_branch(branch)
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prerequisites = [target]
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prerequisites.extend(
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self.prerequisites_by_branch(branch)
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)
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prerequisites.extend(
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self.prerequisites_by_image(image)
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)
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prerequisites_s = ' '.join(prerequisites)
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branding = self.branding_by_branch(branch)
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if branding:
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branding = f'\n\t@$(call set,BRANDING,{branding})'
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recipes = [branding]
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for package in self.packages(image, branch):
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recipes.append(
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add_recipe(
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'BASE_PACKAGES',
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package))
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for service in self.enabled_services(image, branch):
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recipes.append(
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add_recipe(
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'DEFAULT_SERVICES_ENABLE',
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service))
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for service in self.disabled_services(image, branch):
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recipes.append(
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add_recipe(
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'DEFAULT_SERVICES_DISABLE',
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service))
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recipes_s = ''.join(recipes)
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rule = f'''
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{target}_{ebranch}: {prerequisites_s}; @:{recipes_s}
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'''.strip()
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print(rule, file=f)
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self.generate_apt_files()
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@property
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def branches(self) -> List[str]:
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return list(self._branches.keys())
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def arches_by_branch(self, branch: str) -> List[str]:
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return list(self._branches[branch]['arches'].keys())
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def branding_by_branch(self, branch: str) -> str:
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return self._branches[branch].get('branding', '')
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def prerequisites_by_branch(self, branch: str) -> List[str]:
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return self._branches[branch].get('prerequisites', [])
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@property
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def images(self) -> List[str]:
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return list(self._images.keys())
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def kinds_by_image(self, image: str) -> List[str]:
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return self._images[image]['kinds']
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def convert_size(self, size: str) -> Optional[str]:
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result = None
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multiplier = {
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'': 1,
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'k': 2 ** 10,
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'm': 2 ** 20,
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'g': 2 ** 30,
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}
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match = re.match(
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r'^(?P<num> \d+(:?.\d+)? ) (?P<suff> [kmg] )?$',
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size,
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re.IGNORECASE | re.VERBOSE,
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)
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if not match:
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self.error('Bad size format')
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else:
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num = float(match.group('num'))
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suff = match.group('suff')
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if suff is None:
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suff = ''
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mul = multiplier[str.lower(suff)]
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result = str(round(num * mul))
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return result
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def size_by_image(self, image: str) -> Optional[str]:
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size = self._images[image].get('size')
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if size is not None:
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size = self.convert_size(str(size))
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return size
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def target_by_image(self, image: str) -> str:
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return self._images[image]['target']
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def prerequisites_by_image(self, image: str) -> List[str]:
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return self._images[image].get('prerequisites', [])
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def tests_by_image(self, image: str) -> List[Dict]:
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return self._images[image].get('tests', [])
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def scripts_by_image(self, image: str) -> Dict[str, str]:
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scripts = {}
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for name, value in self._scripts.items():
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number = value.get('number')
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if (
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value.get('global', False)
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and name not in self._images[image].get('no_scripts', [])
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or name in self._images[image].get('scripts', [])
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):
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if number is not None:
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if isinstance(number, int):
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number = f'{number:02}'
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name = f'{number}-{name}'
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scripts[name] = value['contents']
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return scripts
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def skip_arch(self, image: str, arch: str) -> bool:
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return arch in self._images[image].get('exclude_arches', [])
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def skip_branch(self, image: str, branch: str) -> bool:
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return branch in self._images[image].get('exclude_branches', [])
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def get_items(
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self,
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data: Dict,
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image: str,
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branch: str,
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state_re: str = None,
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default_state: str = None,
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) -> List[str]:
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items = []
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if state_re is None:
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state_re = ''
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if default_state is None:
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default_state = state_re
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|
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for item, constraints in data.items():
|
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if constraints is None:
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constraints = {}
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|
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if (
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image in constraints.get('exclude_images', [])
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or branch in constraints.get('exclude_branches', [])
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):
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continue
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# Empty means no constraint: e.g. all images
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images = constraints.get('images', [image])
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branches = constraints.get('branch', [branch])
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state = constraints.get('state', default_state)
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if (
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image in images
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and branch in branches
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and re.match(state_re, state)
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):
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items.append(item)
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return items
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|
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def packages(self, image: str, branch: str) -> List[str]:
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image_packages = self._images[image].get('packages', [])
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return image_packages + self.get_items(self._packages, image, branch)
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def enabled_services(self, image: str, branch: str) -> List[str]:
|
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image_services = self._images[image].get('services_enabled', [])
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return image_services + self.get_items(
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self._services,
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image,
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branch,
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'enabled?',
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self.service_default_state,
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)
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|
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def disabled_services(self, image: str, branch: str) -> List[str]:
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image_services = self._images[image].get('services_disabled', [])
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return image_services + self.get_items(
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self._services,
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image,
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branch,
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'disabled?',
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self.service_default_state,
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)
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|
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def build_failed(self, target, arch):
|
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if self.try_build_all:
|
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self._build_errors.append(BuildError(target, arch))
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else:
|
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self.error(BuildError(target, arch))
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|
|
|
def should_rebuild(self, tarball):
|
|
if not os.path.exists(tarball):
|
|
rebuild = True
|
|
else:
|
|
lived = time.time() - os.path.getmtime(tarball)
|
|
delta = datetime.timedelta(seconds=lived)
|
|
rebuild = delta > self.rebuild_after
|
|
if rebuild:
|
|
os.unlink(tarball)
|
|
return rebuild
|
|
|
|
def build_tarball(
|
|
self,
|
|
target: str,
|
|
branch: str,
|
|
arch: str,
|
|
kind: str,
|
|
size: str = None,
|
|
) -> Optional[Path]:
|
|
target = f'{target}_{self.escape_branch(branch)}'
|
|
image = re.sub(r'.*/', '', target)
|
|
full_target = f'{target}.{kind}'
|
|
tarball_name = f'{image}-{arch}.{kind}'
|
|
tarball_path = self.out_dir / tarball_name
|
|
result: Optional[Path] = tarball_path
|
|
apt_dir = self.work_dir / 'apt'
|
|
with self.pushd(self.work_dir / 'mkimage-profiles'):
|
|
if not self.should_rebuild(tarball_path):
|
|
self.info(f'Skip building of {full_target} {arch}')
|
|
else:
|
|
cmd = [
|
|
'make',
|
|
f'APTCONF={apt_dir}/apt.conf.{branch}.{arch}',
|
|
f'ARCH={arch}',
|
|
f'IMAGE_OUTDIR={self.out_dir}',
|
|
f'IMAGE_OUTFILE={tarball_name}',
|
|
]
|
|
if size is not None:
|
|
cmd.append(f'VM_SIZE={size}')
|
|
cmd.append(full_target)
|
|
self.info(f'Begin building of {full_target} {arch}')
|
|
self.call(cmd, fail_on_error=False)
|
|
|
|
if os.path.exists(tarball_path):
|
|
self.info(f'End building of {full_target} {arch}')
|
|
else:
|
|
result = None
|
|
self.build_failed(full_target, arch)
|
|
|
|
return result
|
|
|
|
def image_path(
|
|
self,
|
|
image: str,
|
|
branch: str,
|
|
arch: str,
|
|
kind: str
|
|
) -> Path:
|
|
path = (
|
|
self.images_dir
|
|
/ branch
|
|
/ f'alt-{branch.lower()}-{image}-{arch}.{kind}'
|
|
)
|
|
return path
|
|
|
|
def copy_image(self, src: Path, dst: Path) -> None:
|
|
os.link(src, dst)
|
|
|
|
def clear_images_dir(self):
|
|
for branch in self.branches:
|
|
directory = self.images_dir / branch
|
|
for path in directory.iterdir():
|
|
os.unlink(path)
|
|
|
|
def remove_old_tarballs(self):
|
|
with self.pushd(self.out_dir):
|
|
for tb in os.listdir():
|
|
lived = time.time() - os.path.getmtime(tb)
|
|
delta = datetime.timedelta(seconds=lived)
|
|
if delta > self.rebuild_after:
|
|
os.unlink(tb)
|
|
|
|
def ensure_scripts(self, image):
|
|
for name in self.created_scripts:
|
|
os.unlink(name)
|
|
|
|
self.created_scripts = []
|
|
|
|
target_type = re.sub(r'(?:(\w+)/)?.*', r'\1',
|
|
self.target_by_image(image))
|
|
if not target_type:
|
|
target_type = 'distro'
|
|
scripts_path = (
|
|
self.work_dir
|
|
/ 'mkimage-profiles'
|
|
/ 'features.in'
|
|
/ f'build-{target_type}'
|
|
/ 'image-scripts.d'
|
|
)
|
|
for name, content in self.scripts_by_image(image).items():
|
|
script = scripts_path / name
|
|
self.created_scripts.append(script)
|
|
script.write_text(content)
|
|
os.chmod(script, 0o755)
|
|
|
|
def ensure_build_success(self) -> None:
|
|
if self._build_errors:
|
|
self.error(MultipleBuildErrors(self._build_errors))
|
|
|
|
def create_images(self) -> None:
|
|
self.clear_images_dir()
|
|
self.ensure_mkimage_profiles()
|
|
|
|
for branch in self.branches:
|
|
for image in self.images:
|
|
if self.skip_branch(image, branch):
|
|
continue
|
|
self.ensure_scripts(image)
|
|
target = self.target_by_image(image)
|
|
for arch in self.arches_by_branch(branch):
|
|
if self.skip_arch(image, arch):
|
|
continue
|
|
|
|
for kind in self.kinds_by_image(image):
|
|
size = self.size_by_image(image)
|
|
tarball = self.build_tarball(
|
|
target, branch, arch, kind, size
|
|
)
|
|
if tarball is None:
|
|
continue
|
|
image_path = self.image_path(image, branch, arch, kind)
|
|
self.copy_image(tarball, image_path)
|
|
if not self.no_tests:
|
|
for test in self.tests_by_image(image):
|
|
self.info(f'Test {image} {branch} {arch}')
|
|
if not cloud_build.image_tests.test(
|
|
image=image_path,
|
|
branch=branch,
|
|
arch=arch,
|
|
**test,
|
|
):
|
|
self.error(f'Test for {image} failed')
|
|
|
|
self.ensure_build_success()
|
|
self.remove_old_tarballs()
|
|
|
|
def copy_external_files(self):
|
|
if self.external_files:
|
|
for branch in os.listdir(self.external_files):
|
|
if branch not in self.branches:
|
|
self.error(f'Unknown branch {branch} in external_files')
|
|
|
|
with self.pushd(self.external_files / branch):
|
|
for image in os.listdir():
|
|
self.info(f'Copy external image {image} in {branch}')
|
|
self.copy_image(image,
|
|
self.images_dir / branch / image)
|
|
|
|
def sign(self):
|
|
if self.no_sign:
|
|
return
|
|
|
|
sum_file = self.checksum_command.upper()
|
|
for branch in self.branches:
|
|
with self.pushd(self.images_dir / branch):
|
|
files = [f
|
|
for f in os.listdir()
|
|
if not f.startswith(sum_file)]
|
|
string = ','.join(files)
|
|
|
|
cmd = [self.checksum_command] + files
|
|
self.info(f'Calculate checksum of {string}')
|
|
self.call(cmd, stdout_to_file=sum_file)
|
|
shutil.copyfile(sum_file, 'SHA256SUMS')
|
|
|
|
self.info(f'Sign checksum of {string}')
|
|
self.call(['gpg2', '--yes', '-basu', self.key, sum_file])
|
|
shutil.copyfile(sum_file + '.asc', 'SHA256SUMS.gpg')
|
|
|
|
def kick(self):
|
|
remote = self._remote
|
|
colon = remote.find(':')
|
|
if colon != -1:
|
|
host = remote[:colon]
|
|
self.call(['ssh', host, 'kick'])
|
|
|
|
def sync(self) -> None:
|
|
for branch in self.branches:
|
|
remote = self.remote(branch)
|
|
if self._create_remote_dirs:
|
|
os.makedirs(remote, exist_ok=True)
|
|
cmd = [
|
|
'rsync',
|
|
f'{self.images_dir}/{branch}/',
|
|
'-rv',
|
|
remote,
|
|
]
|
|
if not self.no_delete:
|
|
cmd.append('--delete')
|
|
self.call(cmd)
|
|
|
|
self.kick()
|