bg_task.py

import newrelic.agent

newrelic.agent.initialize('staging.ini')
newrelic.agent.register_application(timeout=10.0)

def add(a, b):
    return a + b

def sub(a, b):
    return a - b

def mul(a, b):
    return a * b

def div(a, b):
    return a / b


class TaskRunner(object):
    def __init__(self):
        self.application = newrelic.agent.application()
        self.task_list = {'add': add, 'sub': sub, 'mul': mul, 'div': div}

    def run_task(self, name, args):
        task = self.task_list[name]
        name = newrelic.agent.callable_name(task)
        with newrelic.agent.BackgroundTask(self.application, name=name, group='Task'):
            return task(*args)

t = TaskRunner()
print t.run_task('add', (1, 2))
print t.run_task('sub', (1, 2))
print t.run_task('mul', (1, 2))
print t.run_task('div', (1, 2))