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import logging
import time
from typing import Iterator
from .exceptions import SysCallError
from .general import SysCommand, SysCommandWorker, locate_binary
from .installer import Installer
from .output import log
from .storage import storage
class Ini:
def __init__(self, *args :str, **kwargs :str):
"""
Limited INI handler for now.
Supports multiple keywords through dictionary list items.
"""
self.kwargs = kwargs
def __str__(self) -> str:
result = ''
first_row_done = False
for top_level in self.kwargs:
if first_row_done:
result += f"\n[{top_level}]\n"
else:
result += f"[{top_level}]\n"
first_row_done = True
for key, val in self.kwargs[top_level].items():
if type(val) == list:
for item in val:
result += f"{key}={item}\n"
else:
result += f"{key}={val}\n"
return result
class Systemd(Ini):
"""
Placeholder class to do systemd specific setups.
"""
class Networkd(Systemd):
"""
Placeholder class to do systemd-network specific setups.
"""
class Boot:
def __init__(self, installation: Installer):
self.instance = installation
self.container_name = 'archinstall'
self.session = None
self.ready = False
def __enter__(self) -> 'Boot':
if (existing_session := storage.get('active_boot', None)) and existing_session.instance != self.instance:
raise KeyError("Archinstall only supports booting up one instance, and a active session is already active and it is not this one.")
if existing_session:
self.session = existing_session.session
self.ready = existing_session.ready
else:
self.session = SysCommandWorker([
'/usr/bin/systemd-nspawn',
'-D', self.instance.target,
'--timezone=off',
'-b',
'--no-pager',
'--machine', self.container_name
])
# '-P' or --console=pipe could help us not having to do a bunch of os.write() calls, but instead use pipes (stdin, stdout and stderr) as usual.
if not self.ready:
while self.session.is_alive():
if b' login:' in self.session:
self.ready = True
break
storage['active_boot'] = self
return self
def __exit__(self, *args :str, **kwargs :str) -> None:
# b''.join(sys_command('sync')) # No need to, since the underlying fs() object will call sync.
# TODO: https://stackoverflow.com/questions/28157929/how-to-safely-handle-an-exception-inside-a-context-manager
if len(args) >= 2 and args[1]:
log(args[1], level=logging.ERROR, fg='red')
log(f"The error above occurred in a temporary boot-up of the installation {self.instance}", level=logging.ERROR, fg="red")
shutdown = None
shutdown_exit_code = -1
try:
shutdown = SysCommand(f'systemd-run --machine={self.container_name} --pty shutdown now')
except SysCallError as error:
shutdown_exit_code = error.exit_code
# if error.exit_code == 256:
# pass
while self.session.is_alive():
time.sleep(0.25)
if shutdown:
shutdown_exit_code = shutdown.exit_code
if self.session.exit_code == 0 or shutdown_exit_code == 0:
storage['active_boot'] = None
else:
raise SysCallError(f"Could not shut down temporary boot of {self.instance}: {self.session.exit_code}/{shutdown_exit_code}", exit_code=next(filter(bool, [self.session.exit_code, shutdown_exit_code])))
def __iter__(self) -> Iterator[str]:
if self.session:
for value in self.session:
yield value
def __contains__(self, key: bytes) -> bool:
if self.session is None:
return False
return key in self.session
def is_alive(self) -> bool:
if self.session is None:
return False
return self.session.is_alive()
def SysCommand(self, cmd: list, *args, **kwargs) -> SysCommand:
if cmd[0][0] != '/' and cmd[0][:2] != './':
# This check is also done in SysCommand & SysCommandWorker.
# However, that check is done for `machinectl` and not for our chroot command.
# So this wrapper for SysCommand will do this additionally.
cmd[0] = locate_binary(cmd[0])
return SysCommand(["systemd-run", f"--machine={self.container_name}", "--pty", *cmd], *args, **kwargs)
def SysCommandWorker(self, cmd: list, *args, **kwargs) -> SysCommandWorker:
if cmd[0][0] != '/' and cmd[0][:2] != './':
cmd[0] = locate_binary(cmd[0])
return SysCommandWorker(["systemd-run", f"--machine={self.container_name}", "--pty", *cmd], *args, **kwargs)
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