DaemonContext

Context manager daemonizing the process.

Attributes

Attribute	Type	Description
workdir	string = DAEMON_WORKDIR	The directory path to change into when the daemon starts, defaulting to DAEMON_WORKDIR if not specified.
umask	integer = null	The file mode creation mask to set for the daemon process, provided as an integer or a numeric string.
fake	boolean = null	A flag that, when set to True, prevents the process from detaching and closing standard file descriptors for debugging purposes.
after_chdir	callable = null	A callback function to be executed immediately after the process changes to the working directory.
after_forkers	boolean = True	A flag determining whether to run multiprocessing after-fork registry functions during the daemonization process.
stdfds	tuple = (sys.stdin, sys.stdout, sys.stderr)	A tuple containing the standard input, output, and error file objects to be redirected to /dev/null.

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Constructor

Signature

def DaemonContext(
    pidfile: Any = None,
    workdir: str = None,
    umask: int|str = None,
    fake: bool = False,
    after_chdir: callable = None,
    after_forkers: bool = True,
    **kwargs: dict
)

Parameters

Name	Type	Description
pidfile	Any = None	Path to the PID file for the daemon process.
workdir	str = None	The working directory to change to after daemonizing.
umask	`int	str` = None
fake	bool = False	If true, prevents the actual detachment and forking of the process.
after_chdir	callable = None	A callback function to execute after changing the working directory.
after_forkers	bool = True	Whether to run multiprocessing after-fork handlers.
**kwargs	dict	Additional keyword arguments.

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Methods

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redirect_to_null()

@classmethod
def redirect_to_null(
    fd: int
) - > null

Redirects a specific file descriptor to the system null device to suppress input or output.

Parameters

Name	Type	Description
fd	int	The file descriptor to be redirected to /dev/null.

Returns

Type	Description
null

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open()

@classmethod
def open() - > null

Initializes the daemon environment by detaching the process, changing the working directory, setting the umask, and redirecting standard streams.

Returns

Type	Description
null

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close()

@classmethod
def close(
    *args: any
) - > null

Closes the daemon context and updates the internal state to indicate the context is no longer active.

Parameters

Name	Type	Description
*args	any	Variable arguments typically passed by the context manager exit protocol.

Returns

Type	Description
null

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