
import eventlet
eventlet.monkey_patch()

import gettext
import sys

from oslo_config import cfg
from oslo_service import service

gettext.install('blazar')

from blazar.db import api as db_api
from blazar.manager import service as manager_service
from blazar.notification import notifier
from blazar.utils import service as service_utils


def main():
    cfg.CONF(project='blazar', prog='blazar-manager')
    service_utils.prepare_service(sys.argv)
    db_api.setup_db()
    notifier.init()
    service.launch(
        cfg.CONF,
        manager_service.ManagerService()
    ).wait()


if __name__ == '__main__':
    main()


import eventlet
eventlet.monkey_patch()

import gettext
import sys

from oslo_config import cfg
from oslo_service import service

gettext.install('blazar')

from blazar.db import api as db_api
from blazar.manager import service as manager_service
from blazar.notification import notifier
from blazar.utils import service as service_utils


def main():
    cfg.CONF(project='blazar', prog='blazar-manager')
    service_utils.prepare_service(sys.argv)
    db_api.setup_db()
    notifier.init()
    service.launch(
        cfg.CONF,
        manager_service.ManagerService(),
        restart_method='mutate'
    ).wait()


if __name__ == '__main__':
    main()

Enable mutable config in blazar
Enable mutable config in blazar

New releases of oslo.config support a 'mutable' parameter in Opts.
oslo.service provides an option [1] which allows services to tell it
they want mutate_config_files to be called by passing a parameter.

This commit is to use the same approach. This allows Blazar to benefit
from [2], where the 'debug' option (owned by oslo.log) is made mutable.
We should be able to turn debug logging on and off by changing the
config and sending a SIGHUP signal to blazar-manager.

However, please note that blazar-manager currently doesn't work
correctly after receiving a SIGHUP. As a result the mutable config is
not yet usable. Operators should continue restarting blazar-manager
after changing blazar.conf.

TC goal: https://governance.openstack.org/tc/goals/rocky/enable-mutable-configuration.html

[1] https://review.openstack.org/263312/
[2] https://review.openstack.org/254821/

Change-Id: Ieea9043b6f3a28dc92717680585614a68227120e

  
  import eventlet
  eventlet.monkey_patch()
  
  import gettext
  import sys
  
  from oslo_config import cfg
  from oslo_service import service
  
  gettext.install('blazar')
  
  from blazar.db import api as db_api
  from blazar.manager import service as manager_service
  from blazar.notification import notifier
  from blazar.utils import service as service_utils
  
  
  def main():
      cfg.CONF(project='blazar', prog='blazar-manager')
      service_utils.prepare_service(sys.argv)
      db_api.setup_db()
      notifier.init()
      service.launch(
          cfg.CONF,
-         manager_service.ManagerService()
+         manager_service.ManagerService(),
+         restart_method='mutate'
      ).wait()
  
  
  if __name__ == '__main__':
      main()
  
Enable mutable config in blazar
## Code Before:

import eventlet
eventlet.monkey_patch()

import gettext
import sys

from oslo_config import cfg
from oslo_service import service

gettext.install('blazar')

from blazar.db import api as db_api
from blazar.manager import service as manager_service
from blazar.notification import notifier
from blazar.utils import service as service_utils


def main():
    cfg.CONF(project='blazar', prog='blazar-manager')
    service_utils.prepare_service(sys.argv)
    db_api.setup_db()
    notifier.init()
    service.launch(
        cfg.CONF,
        manager_service.ManagerService()
    ).wait()


if __name__ == '__main__':
    main()

## Instruction:
Enable mutable config in blazar
## Code After:

import eventlet
eventlet.monkey_patch()

import gettext
import sys

from oslo_config import cfg
from oslo_service import service

gettext.install('blazar')

from blazar.db import api as db_api
from blazar.manager import service as manager_service
from blazar.notification import notifier
from blazar.utils import service as service_utils


def main():
    cfg.CONF(project='blazar', prog='blazar-manager')
    service_utils.prepare_service(sys.argv)
    db_api.setup_db()
    notifier.init()
    service.launch(
        cfg.CONF,
        manager_service.ManagerService(),
        restart_method='mutate'
    ).wait()


if __name__ == '__main__':
    main()
