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The best way to use this module is through `pre_arg_parse_setup` and
`post_arg_parse_setup`. `pre_arg_parse_setup` configures a minimal
terminal logger and ensures a detailed log is written to a secure
temporary file if Certbot exits before `post_arg_parse_setup` is called.
`post_arg_parse_setup` relies on the parsed command line arguments and
does the full logging setup with terminal and rotating file handling as
configured by the user. Any logged messages before
`post_arg_parse_setup` is called are sent to the rotating file handler.
Special care is taken by both methods to ensure all errors are logged
and properly flushed before program exit.
The `logging` module is useful for recording messages about about what
Certbot is doing under the hood, but do not necessarily need to be shown
to the user on the terminal. The default verbosity is WARNING.
The preferred method to display important information to the user is to
use `certbot.display.util` and `certbot.display.ops`.
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is called, these buffered messages are written to a temporary file.
If Certbot doesn't exit, `post_arg_parse_setup` writes the messages
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This function also sets `logging.shutdown` to be called on program
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This function assumes `pre_arg_parse_setup` was called earlier and
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The additional functionality provided by this wrapper is the memory
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logging was fully configured.
Since sys.excepthook isn't called on SystemExit exceptions, the
memory handler will not be flushed in this case which prevents us
from creating temporary log files when argparse exits because a
command line argument was invalid or -h, --help, or --version was
provided on the command line.
:param MemoryHandler memory_handler: memory handler to flush
:param tuple args: args for post_arg_parse_except_hook
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:param BaseException exc_value: raised exception
:param traceback trace: traceback of where the exception was raised
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