"ok" probe for zc.monitor

ok.py

import pkg_resources
import logging


logger = logging.getLogger('zc.monitor')


try:
    pkg_resources.get_distribution('zc.monitor')
except pkg_resources.DistributionNotFound:
    logger.info('Monitor server is not available')
else:
    def ok(connection):
        """Return the string 'OK'."""
        connection.write('OK\n')

    import zc.monitor
    zc.monitor.register(ok)
    logger.info('"OK" command for monitor server registered')