3429e3824c
This change switches the conductor to using Futurist library executor and periodic tasks worker instead of oslo.service periodic tasks. This allows running periodic tasks in parallel and relying on more standard interfaces (futures, executors) when dealing with asynchronous execution. A green thread executor is used instead of using an eventlet green pool directly. The maximum number of workers is taken from the existing workers_pool_size configuration option, and no tasks are allowed to be enqueued to mimic the previous behaviour (might be lifted later). The periodic tasks worker is using the same executor, and its main loop thread is also running on it. For this reason minimum value for workers_pool_size is now 3: periodic task main loop, keep alive thread and at least one thread for other tasks. A special decorator for driver-periodic tasks is now deprecated, as the generic decorator can be used there as well. Closes-Bug: #1526277 Change-Id: I57bf7cebfb6db805b6c521bacfef2993b16ce1ee |
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| __init__.py | ||
| base.py | ||