File: //lib/python3/dist-packages/cloudinit/__pycache__/signal_handler.cpython-38.pyc
U
Ӈg� � @ sN U d dl Z d dlZd dlZd dlZd dlZd dlZd dlZd dlmZ d dl m
Z
m Z m Z m
Z
mZ d dlmZ d dlmZ e�e�ZdZe ed< dZe ed < ejd
ejd ej d iZ e e e e f ed
< G dd� de
�Z e dej!�Z"e ed< e d ej#�Z$e ed< e"a%e�&� Z'ee e
df dd�dd�Z(dd� Z)dd� Z*dd� Z+e j,d d � �Z-dS ) � N)�StringIO)�Callable�Dict�Final�
NamedTuple�Union)�version)�log_utilz#Cloud-init {} received {}, exiting
� SIG_MESSAGE� �BACK_FRAME_TRACE_DEPTHz/Cloud-init %(version)s received SIGINT, exitingz0Cloud-init %(version)s received SIGTERM, exitingz0Cloud-init %(version)s received SIGABRT, exiting�SIGNALSc @ s e Zd ZU eed< eed< dS )� ExitBehavior� exit_code� log_levelN)�__name__�
__module__� __qualname__�int�__annotations__� r r �:/usr/lib/python3/dist-packages/cloudinit/signal_handler.pyr s
r � �SIGNAL_EXIT_BEHAVIOR_CRASH�SIGNAL_EXIT_BEHAVIOR_QUIET)�sig�returnc C sz t | �r"t| tj�svt�d| � nT| tjkr8t�d� n>| dkrLt�d� n*| tjkrdt�d| � nt� dt
| �| � dS )z+inspect_handler() logs signal handler statez.Signal state [%s] - previously custom handler.z,Signal state [SIG_IGN] - previously ignored.Nz;Signal state [None] - previously not installed from Python.zISignal state [%s] - default way of handling signal was previously in use.z Signal state [%s(%s)] - unknown) �callable�
isinstance�types�BuiltinFunctionType�LOG�info�signal�SIG_IGN�SIG_DFLZwarning�type)r r r r �inspect_handler+ s
�r' c C sz ||ks | sd S t �| �}d|d }|�d||jf � |�d||jf � |�d||jf � t| j|d ||� d S )N� � z%sFilename: %s
z%sFunction: %s
z%sLine number: %s
r )�inspectZ getframeinfo�write�filenameZfunction�lineno�
_pprint_frame�f_back)�frameZdepthZ max_depth�contentsZ
frame_info�prefixr r r r. B s
r. c C s^ t | tj�r| jn| }tt�t�� |��}t |dt
|� t j |�
� ttjd� t�tj� d S )Nr )�logr )r r# ZSignals�namer r
�format�vrZversion_stringr. r r Z multi_log�getvaluer! �_SIGNAL_EXIT_BEHAVIORr �sys�exitr )�signumr0 r4 r1 r r r � _handle_exitM s �r< c C s2 d} t �� D ]}tt�|t�� q | tt �7 } | S )z attach cloud-init's handlersr )r
�keysr' r# r< �len)Z
sigs_attachedr; r r r �attach_handlersX s
r? c c s" t � tadV taW 5 Q R X dS )a$ suspend_crash() allows signals to be received without exiting 1
This allow signal handling without a crash where it is expected. The
call stack is still printed if signal is received during this context, but
the return code is 0 and no traceback is printed.
Threadsafe.
N)�_SUSPEND_WRITE_LOCKr r8 r r r r r �
suspend_crasha s rA ).�
contextlibr* Zloggingr# r9 Z threadingr �ior �typingr r r r r Z cloudinitr r6 Z
cloudinit.logr Z getLoggerr r! r
r r �SIGINT�SIGTERM�SIGABRTr
r �strr ZERRORr �INFOr r8 �RLockr@ r' r. r< r? �contextmanagerrA r r r r �<module> s@
�