Extending Flower

app.py

from flower.app import Flower

from .urls import handlers


class MyFlower(Flower):

    @classmethod
    def get_handlers(cls):
        orig_handlers = super(MyFlower, cls).get_handlers()
        error_handler = orig_handlers.pop()  # always the last
        orig_handlers.extend(handlers)
        orig_handlers.append(error_handler)
        return orig_handlers

command.py

from flower.command import FlowerCommand

from .app import MyFlower


class MyFlowerCommand(FlowerCommand):

    @classmethod
    def get_flower_class(cls):
        return MyFlower

tasks.py

# located in api/tasks.py

from tornado import web

from flower.api.tasks import BaseTaskHandler


class KnownTasks(BaseTaskHandler):

    @web.authenticated
    def get(self):
        """
Get a list of known tasks
        """
        known_tasks = {}
        for tname, task in self.capp.tasks.items():
            if tname.startswith('celery.'):
                continue
            known_tasks[tname] = {
                'name': tname,
            }
        # self.write({'task-names': sorted(self.capp.tasks.keys())})
        self.write(known_tasks)

urls.py

from .api import tasks
from . import views

handlers = [
    (r"/api/tasks/known", tasks.KnownTasks),
]