def __init__(self, app):
""" Set up the parameters of a new runner.
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.
"""
self.parse_args()
self.app = app
detach_process = None
try:
detach_process = app.detach_process
except AttributeError:
pass
self.daemon_context = DaemonContext(detach_process=detach_process)
if hasattr(app, 'stdin_path'):
self.daemon_context.stdin = open(app.stdin_path, 'r')
else:
self.daemon_context.stdin = sys.stdin
if hasattr(app, 'stdout_path'):
self.daemon_context.stdout = open(app.stdout_path, 'w+')
else:
self.daemon_context.stdout = sys.stdout
if hasattr(app, 'stderr_path'):
self.daemon_context.stderr = open(app.stderr_path,
'w+',
buffering=0)
else:
self.daemon_context.stderr = sys.stderr
self.pidfile = None
if app.pidfile_path is not None:
self.pidfile = make_pidlockfile(app.pidfile_path,
app.pidfile_timeout)
self.daemon_context.pidfile = self.pidfile
