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最新推荐文章于 2024-11-23 00:12:21 发布

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最新推荐文章于 2024-11-23 00:12:21 发布

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分类专栏：整理

本文链接：https://blog.youkuaiyun.com/gavin3318/article/details/78145057

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本文介绍了一种内存信息同步机制，该机制通过对比新旧内存信息来实现内存配置的自动更新。具体包括新增、删除及更新内存记录的过程，并将这些变化记录到服务器日志中。

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from repository import models

class Memory(object):
    def __init__(self, server_obj, info):
        self.server_obj = server_obj
        self.memory_dict = info

    def process(self):
        new_memory_info_dict = self.memory_dict['data']
        old_memory_info_list = self.server_obj.memory.all()
        new_memory_slot_set = set(new_memory_info_dict.keys())
        old_memory_slot_set = {memory.slot for memory in old_memory_info_list}
        add_slot_list = new_memory_slot_set.difference(old_memory_slot_set)
        print(add_slot_list)
        del_slot_list = old_memory_slot_set.difference(new_memory_slot_set)
        print(del_slot_list)
        update_slot_list = old_memory_slot_set.intersection(new_memory_slot_set)
        print(update_slot_list)

        add_record_list = []
        for slot in add_slot_list:
            memory_dick = new_memory_info_dict[slot]
            tmp = '[%s]添加新内存:槽位[%s],容量[%s];' % (
            self.server_obj.hostname, slot, new_memory_info_dict[slot]['capacity'])
            add_record_list.append(tmp)
            memory_dick['server_obj'] = self.server_obj
            models.Memory.objects.create(**memory_dick)
        if add_record_list:
            models.ServerRecord.objects.create(server_obj=self.server_obj, content=';'.join(add_record_list))

        del_record_list = []
        models.Memory.objects.filter(server_obj=self.server_obj, slot__in=del_record_list).delete()
        for slot in del_slot_list:
            tmp = '[%s]删除内存:槽位[%s];' %(self.server_obj.hostname, slot)
            del_record_list.append(tmp)
        if del_record_list:
            models.ServerRecord.objects.create(server_obj = self.server_obj, content=';'.join(del_record_list))

        update_record_list = []
        for slot in update_slot_list:
            tmp = '[%s]更新内存:槽位[%s]' %(self.server_obj.hostname, slot)
            memory_dick = new_memory_info_dict[slot]
            obj = models.Memory.objects.filter(server_obj=self.server_obj, slot=slot).first()
            for k, new_val in memory_dick:
                old_val = getattr(obj, k)
                if not new_val == old_val:
                    setattr(obj, k, new_val)
                    tmp = tmp + '[%s]由[%s]更新为[%s]' %(k, old_val, new_val)
            obj.save()
            update_record_list.append(tmp)
        if update_record_list:
            models.ServerRecord.objects.create(server_obj=self.server_obj, content=';'.join(update_record_list))

这里写图片描述