nova源码分析入门（NOVA分析）
本文目录一览：
工行的PBMS,PCRM,NOVA系统的英文是什么意思？麻烦详细介绍、
PBMS是个人客户营销管理系统，PCRM是个人优质客户关系管理系统，NOVA是全功能银行系统。
1、个人客户营销管理系统（PBMS）主要是针对企业营销、客户关系、销售合同三个方面进行管理的系统。
2、个人优质客户关系管理系统（PCRM），是利用软件、硬件和网络技术，为银行建立一个贵宾客户信息收集、管理、分析和利用的信息系统。以贵宾客户数据的管理为核心，记录银行和客户发生的各种交互行为，以及各类有关活动的状态，提供各类数据模型，为后期的分析和决策提供支持。
3、中国工商银行的第三代全功能银行系统，简称NOVA。不受金融业务分工限制，可以经营所有种类货币信用业务的银行。以客户为中心，进行帐务处理、满足综合柜员制、并提供24小时服务。
华为nova和vivox50哪个好
让夜色更精彩的X50主要参数：
操作系统：Funtouch OS 10.5（基于Android 10）
屏幕：6.56极点屏，分辨率2376*1080， AMOLED
拍照：后置配以4800万像素主摄+1300万像素专业人像镜头+800万像素广角镜头+500万像素微距摄像头，前置3200万像素
处理器：高通骁龙765G 八核 2.4GHz
外观尺寸：黑镜：159.54*75.39*7.55mm；液氧和浅醺：159.54*75.39*7.49mm
电池容量：4200mAh，不可拆卸电池
重量：黑镜：174.5g；液氧和浅醺：173g
SIM卡规格：双Nano卡
网络支持：联通电信2G、3G、4G、5G；移动2G、4G、5G.
机身内存：8G RAM+128G/256G ROM
扩展存储：不支持内存扩展
连接：Type-C接口、双频WiFi、蓝牙5.1、GPS、OTG
感应器：重力感应器、接近感应器、光敏感应器、陀螺仪、电子罗盘
X50官网参数：
如何获取openstack nova各版本源码
如果你想获取该算法的源码，请到launchpad上下载F版本之前（比如E版本）的nova源码
[python] view plain copy
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2010 Openstack, LLC.
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
"""
Simple Scheduler
"""
from nova import db
from nova import flags
from nova import exception
from nova.scheduler import driver
from nova.scheduler import chance
FLAGS = flags.FLAGS
flags.DEFINE_integer("max_cores", 16,
"maximum number of instance cores to allow per host")
flags.DEFINE_integer("max_gigabytes", 10000,
"maximum number of volume gigabytes to allow per host")
flags.DEFINE_integer("max_networks", 1000,
"maximum number of networks to allow per host")
class SimpleScheduler(chance.ChanceScheduler):
"""Implements Naive Scheduler that tries to find least loaded host."""
def _schedule_instance(self, context, instance_opts, *_args, **_kwargs):
"""Picks a host that is up and has the fewest running instances."""
elevated = context.elevated()
availability_zone = instance_opts.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, 'nova-compute')
if not self.service_is_up(service):
raise exception.WillNotSchedule(host=host)
return host
results = db.service_get_all_compute_sorted(elevated)
if zone:
results = [(service, cores) for (service, cores) in results
if service['availability_zone'] == zone]
for result in results:
(service, instance_cores) = result
if instance_cores + instance_opts['vcpus'] FLAGS.max_cores:
msg = _("All hosts have too many cores")
raise exception.NoValidHost(reason=msg)
if self.service_is_up(service):
return service['host']
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def schedule_run_instance(self, context, request_spec, *_args, **_kwargs):
num_instances = request_spec.get('num_instances', 1)
instances = []
for num in xrange(num_instances):
host = self._schedule_instance(context,
request_spec['instance_properties'], *_args, **_kwargs)
instance_ref = self.create_instance_db_entry(context,
request_spec)
driver.cast_to_compute_host(context, host, 'run_instance',
instance_id=instance_ref['id'], **_kwargs)
instances.append(driver.encode_instance(instance_ref))
return instances
def schedule_start_instance(self, context, instance_id, *_args, **_kwargs):
instance_ref = db.instance_get(context, instance_id)
host = self._schedule_instance(context, instance_ref,
*_args, **_kwargs)
driver.cast_to_compute_host(context, host, 'start_instance',
instance_id=instance_id, **_kwargs)
def schedule_create_volume(self, context, volume_id, *_args, **_kwargs):
"""Picks a host that is up and has the fewest volumes."""
elevated = context.elevated()
volume_ref = db.volume_get(context, volume_id)
availability_zone = volume_ref.get('availability_zone')
zone, host = None, None
if availability_zone:
zone, _x, host = availability_zone.partition(':')
if host and context.is_admin:
service = db.service_get_by_args(elevated, host, 'nova-volume')
if not self.service_is_up(service):
raise exception.WillNotSchedule(host=host)
driver.cast_to_volume_host(context, host, 'create_volume',
volume_id=volume_id, **_kwargs)
return None
results = db.service_get_all_volume_sorted(elevated)
if zone:
results = [(service, gigs) for (service, gigs) in results
if service['availability_zone'] == zone]
for result in results:
(service, volume_gigabytes) = result
if volume_gigabytes + volume_ref['size'] FLAGS.max_gigabytes:
msg = _("All hosts have too many gigabytes")
raise exception.NoValidHost(reason=msg)
if self.service_is_up(service):
driver.cast_to_volume_host(context, service['host'],
'create_volume', volume_id=volume_id, **_kwargs)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
def schedule_set_network_host(self, context, *_args, **_kwargs):
"""Picks a host that is up and has the fewest networks."""
elevated = context.elevated()
results = db.service_get_all_network_sorted(elevated)
for result in results:
(service, instance_count) = result
if instance_count = FLAGS.max_networks:
msg = _("All hosts have too many networks")
raise exception.NoValidHost(reason=msg)
if self.service_is_up(service):
driver.cast_to_network_host(context, service['host'],
'set_network_host', **_kwargs)
return None
msg = _("Is the appropriate service running?")
raise exception.NoValidHost(reason=msg)
