U 2ÜŸjÏã@s’dZdgZddlmZddlmZmZmZmZm Z ddl m Z m Z e Gdd„dƒƒZ eeeefeedœdd „Zeeefe ed œd d „Zd S)zƒ Integration with systemd. Currently only the minimum APIs necessary for using systemd's socket activation feature are supported. Ú ListenFDsé)Úgetpid)ÚDictÚListÚMappingÚOptionalÚSequence)ÚFactoryÚdefinec@s†eZdZUdZeeed<eeƒZ ee ed<dZ e de ee e fe eddœdd„ƒZeed œd d „Zee efd œd d „ZdS)raº L{ListenFDs} provides access to file descriptors inherited from systemd. Typically L{ListenFDs.fromEnvironment} should be used to construct a new instance of L{ListenFDs}. @cvar _START: File descriptors inherited from systemd are always consecutively numbered, with a fixed lowest "starting" descriptor. This gives the default starting descriptor. Since this must agree with the value systemd is using, it typically should not be overridden. @ivar _descriptors: A C{list} of C{int} giving the descriptors which were inherited. @ivar _names: A L{Sequence} of C{str} giving the names of the descriptors which were inherited. Ú _descriptorsÚ_nameséN)ÚenvironÚstartÚreturncCsz|dkrddlm}|}|dkr&|j}ttƒƒ| d¡krNt||ƒ}t|ƒ}ng}d}t|ƒt|ƒkrp|gdƒS|||ƒS)a¶ @param environ: A dictionary-like object to inspect to discover inherited descriptors. By default, L{None}, indicating that the real process environment should be inspected. The default is suitable for typical usage. @param start: An integer giving the lowest value of an inherited descriptor systemd will give us. By default, L{None}, indicating the known correct (that is, in agreement with systemd) value will be used. The default is suitable for typical usage. @return: A new instance of C{cls} which can be used to look up the descriptors which have been inherited. Nr)rÚ LISTEN_PID©) ÚosrÚ_STARTÚstrrÚgetÚ_parseDescriptorsÚ _parseNamesÚlen)ÚclsrrZ_environÚ descriptorsÚnamesrrú:/tmp/pip-unpacked-wheel-4b529toj/twisted/python/systemd.pyÚfromEnvironment.s     zListenFDs.fromEnvironment)rcCs t|jƒS)z6 @return: The configured descriptors. )Úlistr ©ÚselfrrrÚinheritedDescriptors\szListenFDs.inheritedDescriptorscCstt|j|jƒƒS)zr @return: A mapping from the names of configured descriptors to their integer values. )ÚdictÚzipr r r rrrÚinheritedNamedDescriptorsbsz#ListenFDs.inheritedNamedDescriptors)NN)Ú__name__Ú __module__Ú __qualname__Ú__doc__rÚintÚ__annotations__r Útupler rrÚ classmethodrrrrr"rr%rrrrrs  ýü-)rrrc CsTzt|dƒ}Wnttfk r,gYSXtt|||ƒƒ}|d=|d=|SdS)a Parse the I{LISTEN_FDS} environment variable supplied by systemd. @param start: systemd provides only a count of the number of descriptors that have been inherited. This is the integer value of the first inherited descriptor. Subsequent inherited descriptors are numbered counting up from here. See L{ListenFDs._START}. @param environ: The environment variable mapping in which to look for the value to parse. @return: The integer values of the inherited file descriptors, in order. Z LISTEN_FDSrN)r*ÚKeyErrorÚ ValueErrorrÚrange)rrÚcountrrrrrjs  r)rrcCs*| dd¡}t|ƒdkr&t| d¡ƒSdS)zö Parse the I{LISTEN_FDNAMES} environment variable supplied by systemd. @param environ: The environment variable mapping in which to look for the value to parse. @return: The names of the inherited descriptors, in order. ZLISTEN_FDNAMESÚrú:r)rrr,Úsplit)rrrrrrŽs  rN)r)Ú__all__rrÚtypingrrrrrÚattrsr r rr*rrrrrrrÚs T$