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memorydb.py
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44 lines (38 loc) · 1.09 KB
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# -*- coding: utf-8 -*-
"""
Created on 2020/4/21 11:42 PM
---------
@summary: 基于内存的队列，代替redis
---------
@author: Boris
@email: boris_liu@foxmail.com
"""
from queue import PriorityQueue
from feapder import setting
class MemoryDB:
def __init__(self):
self.priority_queue = PriorityQueue(maxsize=setting.TASK_MAX_CACHED_SIZE)
def add(self, item, ignore_max_size=False):
"""
添加任务
:param item: 数据: 支持小于号比较的类 或者 （priority, item）
:param ignore_max_size: queue满时是否等待，为True时无视队列的maxsize，直接往里塞
:return:
"""
if ignore_max_size:
self.priority_queue._put(item)
self.priority_queue.unfinished_tasks += 1
else:
self.priority_queue.put(item)
def get(self):
"""
获取任务
:return:
"""
try:
item = self.priority_queue.get(timeout=1)
return item
except:
return
def empty(self):
return self.priority_queue.empty()