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//opt/alt/python38/lib/python3.8/site-packages/daemon/__pycache__/runner.cpython-38.pyc
U {�1`�) � @ s d Z ddlmZmZ ddlZddlZddlZddlZddlZddl Z ddl m Z ddl m Z mZmZmZ ze W n ek r� eZY nX eZe�de� G dd � d e�ZG d d � d ee�ZG d d � d ee �Z G dd� dee �Z G dd� d�Z ddd�Z dd� Z!dd� Z"dS )z Daemon runner library. � )�absolute_import�unicode_literalsN� ��pidfile)�0_chain_exception_from_existing_exception_context� DaemonContext� basestring�unicodeu@ The ‘runner’ module is not a supported API for this library.c s( e Zd ZdZ� fdd�Zdd� Z� ZS )�DaemonRunnerErrorz3 Abstract base class for errors from DaemonRunner. c s | � � t� j||� d S )N)�_chain_from_context�super�__init__)�self�args�kwargs�� __class__� �>/opt/alt/python38/lib/python3.8/site-packages/daemon/runner.pyr 2 s zDaemonRunnerError.__init__c C s t | dd� d S )NT��as_cause�r �r r r r r 7 s z%DaemonRunnerError._chain_from_context)�__name__� __module__� __qualname__�__doc__r r � __classcell__r r r r r / s r c @ s e Zd ZdZdd� ZdS )� DaemonRunnerInvalidActionErrorz; Raised when specified action for DaemonRunner is invalid. c C s t | dd� d S )NFr r r r r r r > s z2DaemonRunnerInvalidActionError._chain_from_contextN)r r r r r r r r r r ; s r c @ s e Zd ZdZdS )� DaemonRunnerStartFailureErrorz, Raised when failure starting DaemonRunner. N�r r r r r r r r r C s r c @ s e Zd ZdZdS )� DaemonRunnerStopFailureErrorz, Raised when failure stopping DaemonRunner. Nr! r r r r r" G s r" c @ sr e Zd ZdZdZdd� Zdd� Zdd� Zdd d �Zd d � Z dd� Z dd� Z dd� Z e e e d�Z dd� Zdd� Zd S )� DaemonRunnera4 Controller for a callable running in a separate background process. The first command-line argument is the action to take: * 'start': Become a daemon and call `app.run()`. * 'stop': Exit the daemon process specified in the PID file. * 'restart': Stop, then start. zstarted with pid {pid:d}c C sN | � � || _t� | _| �|� d| _|jdk r@t|j|j�| _| j| j_dS )a# Set up the parameters of a new runner. :param app: The application instance; see below. :return: ``None``. The `app` argument must have the following attributes: * `stdin_path`, `stdout_path`, `stderr_path`: Filesystem paths to open and replace the existing `sys.stdin`, `sys.stdout`, `sys.stderr`. * `pidfile_path`: Absolute filesystem path to a file that will be used as the PID file for the daemon. If ``None``, no PID file will be used. * `pidfile_timeout`: Used as the default acquisition timeout value supplied to the runner's PID lock file. * `run`: Callable that will be invoked when the daemon is started. N) � parse_args�appr �daemon_context�#_open_streams_from_app_stream_pathsr Z pidfile_path�make_pidlockfileZpidfile_timeout�r r% r r r r X s �zDaemonRunner.__init__c C s8 t |jd�| j_t |jd�| j_t |jddd�| j_dS )ab Open the `daemon_context` streams from the paths specified. :param app: The application instance. Open the `daemon_context` standard streams (`stdin`, `stdout`, `stderr`) as stream objects of the appropriate types, from each of the corresponding filesystem paths from the `app`. �rtzw+tr )� bufferingN)�openZ stdin_pathr& �stdinZ stdout_path�stdoutZ stderr_path�stderrr) r r r r' z s �z0DaemonRunner._open_streams_from_app_stream_pathsc C sH t j�|d �}d}d�| j�� �}dj||d�}t|� t� |� dS )z� Emit a usage message, then exit. :param argv: The command-line arguments used to invoke the program, as a sequence of strings. :return: ``None``. r � �|zusage: {progname} {usage})�progname�usageN) �os�path�basename�join� action_funcs�keys�format� emit_message�sys�exit)r �argvr2 Zusage_exit_code� action_usage�messager r r � _usage_exit� s �zDaemonRunner._usage_exitNc C sP |dkrt j}d}t|�|k r(| �|� t|d �| _| j| jkrL| �|� dS )a� Parse command-line arguments. :param argv: The command-line arguments used to invoke the program, as a sequence of strings. :return: ``None``. The parser expects the first argument as the program name, the second argument as the action to perform. If the parser fails to parse the arguments, emit a usage message and exit the program. Nr0 r )r< r> �lenrA r �actionr8 )r r> Zmin_argsr r r r$ � s zDaemonRunner.parse_argsc C s| t | j�r| j�� z| j�� W n, tjk rN tdj| jd��}|�Y nX t � � }| j j|d�}t |� | j �� dS )z� Open the daemon context and run the application. :return: ``None``. :raises DaemonRunnerStartFailureError: If the PID file cannot be locked by this process. z(PID file {pidfile.path!r} already lockedr )�pidN)�is_pidfile_staler � break_lockr& r, �lockfileZ AlreadyLockedr r: r4 �getpid� start_messager; r% �run)r �errorrD r@ r r r �_start� s �� zDaemonRunner._startc C sZ | j �� }zt�|tj� W n8 tk rT } ztdj||d��}|�W 5 d}~X Y nX dS )z� Terminate the daemon process specified in the current PID file. :return: ``None``. :raises DaemonRunnerStopFailureError: If terminating the daemon fails with an OS error. z"Failed to terminate {pid:d}: {exc})rD �excN) r �read_pidr4 �kill�signal�SIGTERM�OSErrorr" r: )r rD rM rK r r r �_terminate_daemon_process� s ��z&DaemonRunner._terminate_daemon_processc C sB | j �� s tdj| j d��}|�t| j �r6| j �� n| �� dS )z� Exit the daemon process specified in the current PID file. :return: ``None``. :raises DaemonRunnerStopFailureError: If the PID file is not already locked. z$PID file {pidfile.path!r} not lockedr N)r Z is_lockedr" r: rE rF rS )r rK r r r �_stop� s �� zDaemonRunner._stopc C s | � � | �� dS )z Stop, then start. N)rT rL r r r r �_restart� s zDaemonRunner._restart)�start�stopZrestartc C s@ z| j | j }W n* tk r: tdj| jd��}|�Y nX |S )ae Get the function for the specified action. :return: The function object corresponding to the specified action. :raises DaemonRunnerInvalidActionError: if the action is unknown. The action is specified by the `action` attribute, which is set during `parse_args`. zUnknown action: {action!r})rC )r8 rC �KeyErrorr r: )r �funcrK r r r �_get_action_func� s �� z DaemonRunner._get_action_funcc C s | � � }|| � dS )z� Perform the requested action. :return: ``None``. The action is specified by the `action` attribute, which is set during `parse_args`. N)rZ )r rY r r r � do_action s zDaemonRunner.do_action)N)r r r r rI r r' rA r$ rL rS rT rU r8 rZ r[ r r r r r# K s " �r# c C s, |dkrt j}|�dj| d�� |�� dS )z@ Emit a message to the specified stream (default `sys.stderr`). Nz {message} )r@ )r< r/ �writer: �flush)r@ �streamr r r r; s r; c C sN t | t�s tdj| d��}|�tj�| �s>tdj| d��}|�t�| |�}|S )z= Make a PIDLockFile instance with the given filesystem path. z Not a filesystem path: {path!r})r5 z Not an absolute path: {path!r}) � isinstancer � ValueErrorr: r4 r5 �isabsr ZTimeoutPIDLockFile)r5 Zacquire_timeoutrK rG r r r r( & s � � r( c C st d}| � � }|dk rpzt�|tj� W nH tk r> d}Y n2 tk rn } z|jtjkr^d}W 5 d}~X Y nX |S )u� Determine whether a PID file is stale. :return: ``True`` iff the PID file is stale; otherwise ``False``. The PID file is “stale” if its contents are valid but do not match the PID of a currently-running process. FNT) rN r4 rO rP �SIG_DFL�ProcessLookupErrorrR �errnoZESRCH)r �resultZ pidfile_pidrM r r r rE 5 s rE )N)#r � __future__r r rd r4 rP r< �warningsrG � r �daemonr r r r rc � NameError�NotImplemented�type� __metaclass__�warn�DeprecationWarning� Exceptionr r` r � RuntimeErrorr r" r# r; r( rE r r r r �<module> s6 � T