ó Y[c@s(dZddlZddlZddlZddlZddlZddlmZmZm Z m Z m Z ddl m Z ejeƒZejgZejdkrøxQejejejejgD].ZejeƒejkrÃejeƒqÃqÃWndefd„ƒYZdefd „ƒYZdS( sBRegisters functions to be called if an exception or signal occurs.iÿÿÿÿN(tAnytCallabletDicttListtUnion(terrorstntt ErrorHandlercBsbeZdZd d„Zd„Zd„Zd„Zd„Zd„Z d„Z d„Z d „Z RS( sGContext manager for running code that must be cleaned up on failure. The context manager allows you to register functions that will be called when an exception (excluding SystemExit) or signal is encountered. Usage:: handler = ErrorHandler(cleanup1_func, *cleanup1_args, **cleanup1_kwargs) handler.register(cleanup2_func, *cleanup2_args, **cleanup2_kwargs) with handler: do_something() Or for one cleanup function:: with ErrorHandler(func, args, kwargs): do_something() If an exception is raised out of do_something, the cleanup functions will be called in last in first out order. Then the exception is raised. Similarly, if a signal is encountered, the cleanup functions are called followed by the previously received signal handler. Each registered cleanup function is called exactly once. If a registered function raises an exception, it is logged and the next function is called. Signals received while the registered functions are executing are deferred until they finish. cOsSt|_t|_g|_i|_g|_|dk rO|j|||ŽndS(N(tFalsetcall_on_regular_exitt body_executedtfuncst prev_handlerstreceived_signalstNonetregister(tselftfunctargstkwargs((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyt__init__<s      cCst|_|jƒdS(N(RR t_set_signal_handlers(R((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyt __enter__Es cCs°t|_t}|tkr|S|dkr;|jsŽ|SnS|tjkrftj d|j ƒt}n(tj ddj t j |||ƒƒƒ|jƒ|jƒ|jƒ|S(NsEncountered signals: %ssEncountered exception: %st(tTrueR Rt SystemExitRR Rt SignalExittloggertdebugR tjoint tracebacktformat_exceptiont_call_registeredt_reset_signal_handlerst _call_signals(Rt exec_typet exec_valuettracetretval((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyt__exit__Is         cOs#|jjtj|||ŽƒdS(sSets func to be run with the given arguments during cleanup. :param function func: function to be called in case of an error N(R tappendt functoolstpartial(RRRR((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyR^scCsgtjdƒxS|jrby|jdƒWn$tk rQtjddtƒnX|jjƒqWdS(sCalls all registered functionssCalling registered functionsiÿÿÿÿs'Encountered exception during recovery: texc_infoN(RRR t ExceptionterrorRtpop(R((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyR gs   cCsSxLtD]D}tj|ƒ}|dk r||j|x7|jD],}tjd|ƒtjtjƒ|ƒq WdS(s"Finally call the deferred signals.sCalling signal %sN(R RRtostkilltgetpid(RR3((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyR"sN( t__name__t __module__t__doc__RRRR'RR RR!R2R"(((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyRs    t ExitHandlercBseZdZdd„ZRS(sÔContext manager for running code that must be cleaned up. Subclass of ErrorHandler, with the same usage and parameters. In addition to cleaning up on all signals, also cleans up on regular exit. cOs#tj||||Žt|_dS(N(RRRR (RRRR((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyRšsN(R:R;R<RR(((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyR=“s(R<R)tloggingR7R0Rtacme.magic_typingRRRRRtcertbotRt getLoggerR:RtSIGTERMR/tnametSIGHUPtSIGQUITtSIGXCPUtSIGXFSZt signal_codeR1tSIG_IGNR(tobjectRR=(((s9/usr/lib/python2.7/dist-packages/certbot/error_handler.pyts      ( t