def getpid(self):
"""Get the process id for this instance by reading its pid file.
Returns :const:`None` if the pid file does not exist.
"""
return platforms.PIDFile(self.pidfile.replace('%n',
self.name)).read_pid()
def getpids(self, p, cmd, callback=None):
from celery import platforms
pidfile_template = p.options.setdefault("--pidfile", "celeryd@%n.pid")
nodes = []
for nodename, argv, expander in multi_args(p, cmd):
pidfile = expander(pidfile_template)
try:
pid = platforms.PIDFile(pidfile).read_pid()
except ValueError:
pass
if pid:
nodes.append((nodename, tuple(argv), pid))
else:
self.note("> %s: %s" % (nodename, self.DOWN))
if callback:
callback(nodename, argv, pid)
return nodes