WO2017071279A1 - 一种网络重构的方法及系统 - Google Patents

一种网络重构的方法及系统 Download PDF

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Publication number
WO2017071279A1
WO2017071279A1 PCT/CN2016/088211 CN2016088211W WO2017071279A1 WO 2017071279 A1 WO2017071279 A1 WO 2017071279A1 CN 2016088211 W CN2016088211 W CN 2016088211W WO 2017071279 A1 WO2017071279 A1 WO 2017071279A1
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Prior art keywords
network
identifier
virtual machine
site
subnet
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PCT/CN2016/088211
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English (en)
French (fr)
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郑晓航
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1095Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12Discovery or management of network topologies
    • H04L41/122Discovery or management of network topologies of virtualised topologies, e.g. software-defined networks [SDN] or network function virtualisation [NFV]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/40Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities

Definitions

  • the present application relates to, but is not limited to, the field of network technologies, and in particular, to a method and system for network reconfiguration.
  • OpenStack provides a set of operating platforms or tools to deploy the cloud to provide solutions for cloud computing infrastructure services.
  • OpenStack has the characteristics of open source, interoperability, portability, and ease of use, and also provides an application programming interface (API) for secondary development, which can be easily carried out with other systems. Integration has won more and more attention in the industry.
  • API application programming interface
  • the goal of the Network Function Virtualization (NFV) platform is to replace privately-owned network element devices with server, storage, and network devices based on industry standards.
  • the NFV infrastructure must be distributed across geographically distributed locations.
  • the Virtual Infrastructure Manager (VIM) under the NFV architecture is responsible for controlling and managing network functional virtualization infrastructure such as computing, networking, and storage. Resources can implement VIM functionality by enhancing the functionality of OpenStack to support multi-site NFV platforms.
  • each site (which can be considered as a geographically dispersed area or data center) runs an OpenStack cloud system independently, and the site can be operated independently in autonomous state, and can be managed in a multi-site NFV platform. Therefore, there are networks, subnets, and virtual machines created by the site in an autonomous state. After accessing the NFV platform, the overall network information needs to be presented on the NFV platform, so that the network synchronization information of the site is reconstructed on the NFV platform. A problem that needs to be solved urgently.
  • Embodiments of the present invention provide a network reconfiguration method and system, which can implement a network of sites Synchronization information is reconstructed on the NFV platform.
  • a method of network reconstruction comprising:
  • the site network identifier does not exist in the network identifier mapping table, the site corresponding network, subnet, and virtual machine are created according to the network synchronization information to construct the site corresponding network.
  • the method further includes: after creating the site corresponding network, the subnet, and the logical virtual machine according to the network synchronization information, creating a network identifier mapping table of the platform network identifier and the site network identifier according to the network synchronization information. Create a subnet ID mapping table for the platform subnet ID and the site subnet ID, and a virtual machine ID mapping table for creating the platform VM ID and the site VM ID.
  • updating the site information corresponding to the site includes:
  • the network information identifier exists in the network information identifier mapping table, obtain a site subnet identifier in the network synchronization information.
  • the site subnet identifier does not exist in the subnet identifier mapping table, create a subnet corresponding to the site and a virtual machine under the subnet.
  • the site subnet identifier exists in the subnet identifier mapping table, the virtual machine information under the subnet is detected.
  • the detection of the virtual machine information under the subnet includes:
  • the virtual machine identifier exists in the virtual machine identifier mapping table, detecting whether there is a conflict between the virtual machine and other virtual machines under the subnet, if the virtual machine is under the subnet If there is a conflict between the other virtual machines, the synchronization failure information is returned to the site, and if the virtual machine does not conflict with other virtual machines under the subnet, the virtual machine information corresponding to the virtual machine is overwritten.
  • the virtual machine identifier does not exist in the virtual machine identifier mapping table, detecting whether the virtual machine conflicts with the existing virtual machine, and if the virtual machine conflicts with the existing virtual machine, Returning the synchronization failure information to the site, if the virtual machine does not conflict with the existing virtual machine, creating a virtual machine under the subnet, and creating and saving the platform virtual machine identifier and the site virtual machine identifier Virtual machine identity mapping table.
  • the method further includes: after creating the site corresponding network, the subnet, and the logical virtual machine according to the network synchronization information, and saving the network synchronization information, detecting whether the synchronization end identifier reported by the station is received .
  • the network synchronization information used on the platform is deleted.
  • the network synchronization information reported by the station is continuously detected.
  • a system for network reconstruction includes: a site access module and a network reconstruction module.
  • the site access module is configured to obtain network synchronization information sent by the site.
  • a network reconfiguration module configured to determine whether a site network identifier in the network synchronization information exists in a pre-stored network identifier mapping table; if the site network identifier does not exist in the network identifier mapping table, The network synchronization information is used to create the corresponding network, the subnet, and the virtual machine of the site, and the corresponding network is constructed; if the network identifier of the site exists in the network identifier mapping table, the network synchronization is obtained according to the obtained network synchronization information. Information, updating the site information corresponding to the site.
  • system further includes: a database module.
  • the network reconfiguration module is further configured to: after creating the site corresponding network, the subnet, and the virtual machine according to the network synchronization information, create a network identifier mapping table of the platform network identifier and the site network identifier according to the network synchronization information, Create a subnet ID mapping table for the platform subnet ID and the site subnet ID and a virtual machine ID mapping table for creating the platform VM ID and the site VM ID.
  • a database module configured to save the network identifier mapping table, the subnet identifier mapping table, and the virtual machine identifier mapping table.
  • the network reconfiguration module updating the site information corresponding to the site includes: if the network information identifier exists in the network information When the mapping table is identified, the site subnet identifier in the network synchronization information is obtained; determining whether the site subnet identifier exists in the subnet identifier mapping table; if the site subnet identifier does not exist in the subnet When the mapping table is identified, the subnet corresponding to the site and the virtual machine under the subnet are created; if the site subnet identifier exists in the subnet identifier mapping table, The virtual machine information is detected and processed.
  • the detecting, by the network reconfiguration module, the virtual machine information in the subnet includes: acquiring the network synchronization information. a site virtual machine identifier; determining whether the site virtual machine identifier in the corresponding subnet of the site exists in the virtual machine identifier mapping table; if the site virtual machine identifier exists in the virtual machine identifier mapping table If the virtual machine conflicts with other virtual machines under the subnet, if the virtual machine conflicts with other virtual machines under the subnet, the synchronization failure information is returned to the site.
  • the virtual machine information corresponding to the virtual machine is overwritten with the original virtual machine information; if the site virtual machine identifier does not exist in the virtual machine
  • the virtual machine identifies the mapping table, it is detected whether there is a conflict between the virtual machine and the existing virtual machine, and if the virtual machine conflicts with the existing virtual machine, the The point returns the synchronization failure information. If the virtual machine does not conflict with the existing virtual machine, the virtual machine under the subnet is created, and the virtual machine of the platform virtual machine identifier and the site virtual machine identifier is created and saved. Identify the mapping table.
  • the network reconfiguration module is further configured to: after creating the site corresponding network, subnet, and virtual machine according to the network synchronization information, and saving the network synchronization information, detecting Receiving the synchronization end identifier reported by the station; if the synchronization end identifier is received, deleting the network synchronization information used on the platform; if the synchronization end identifier is not received, continuing to detect the network synchronization reported by the station information.
  • a computer readable storage medium storing computer executable instructions for implementing the network reconstruction method when executed by a processor.
  • An embodiment of the present invention provides a method and system for network reconfiguration.
  • the method includes: acquiring network synchronization information sent by a station, and determining whether a site network identifier in the network synchronization information exists in a pre-stored network identifier mapping table, if the site network When the identifier does not exist in the network identifier mapping table, the site corresponding network, subnet, and virtual machine are created according to the network synchronization information, and the site corresponding network is constructed; if the site network identifier exists in the network identifier mapping table, according to the obtained network synchronization Information, update the site information corresponding to the site.
  • the network topology of the site can be reconstructed in time, so that the user can view the network deployment situation at multiple levels.
  • FIG. 1 is a flowchart of a method for network reconfiguration according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of interaction between a station and an NFV platform according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a system for network reconfiguration according to an embodiment of the present invention.
  • An embodiment of the present invention provides a method and system for network reconfiguration.
  • the method includes: acquiring network synchronization information sent by a station, and determining whether a site network identifier in the network synchronization information exists in a pre-stored network identifier mapping table, if the site network When the identifier does not exist in the network identifier mapping table, the site corresponding network, subnet, and virtual machine are created according to the network synchronization information, and the site corresponding network is constructed; if the site network identifier exists in the network identifier mapping table, according to the obtained network synchronization Information, update the site information corresponding to the site.
  • the network topology of the site can be reconstructed in time, so that the user can view the network deployment situation at multiple levels.
  • FIG. 1 is a flowchart of a method for network reconfiguration according to an embodiment of the present invention, where the method includes steps S101-S104:
  • S103 is performed, and if the site network identifier exists in the network identity mapping table, then S104 is performed.
  • the method can be applied to a network function virtualization platform (NFV).
  • NFV network function virtualization platform
  • the NFV platform acquires in real time.
  • the network synchronization information may be in the following format:
  • sitname represents the site name
  • networkName1 represents the network name
  • sitNetUUID represents the ID value of the network identified in the site, ie: site network identity
  • nsitSubnetName1 represents the name of subnet 1 under the network
  • sitSubnetUUID indicates that the subnet is identified within the site
  • the ID value that is, the site subnet ID
  • VM1 indicates the virtual machine 1 under the subnet
  • the sitvmUUID indicates the ID value of the virtual machine identified in the site, that is, the site virtual machine ID
  • otherVMIntfo indicates other information of the virtual machine.
  • otherSubnetInfo indicates other information of the subnet
  • otherNetInfo indicates other information of the network.
  • the NFV platform is pre-stored and has accessed the NFV platform.
  • Multiple mapping tables of the site such as a network identity mapping table, a subnet identity mapping table, and a virtual machine identity mapping table, in the network identity mapping table, the site network identifier of the site that has accessed the NFV platform is saved, in the child
  • the network identifier mapping table stores the site subnet identifier of the site that has accessed the NFV platform
  • the virtual machine identifier mapping table stores the site virtual machine identifier of the site that has accessed the NFV platform.
  • the NFV platform After the NFV platform obtains the network synchronization information reported by a certain site and has the above format, the NFV platform will first obtain the site network identifier in the network synchronization information, and the NFV platform will obtain the information. The site network identifier matches each site network identifier in the network identifier mapping table. If the site network identifier in the network synchronization information does not exist in the network identifier mapping table, the NFV platform creates a site corresponding network according to the network synchronization information.
  • the NFV platform creates a network identifier mapping table of the platform network identifier and the site network identifier according to the network synchronization information, and creates a platform subnet identifier and a site.
  • the subnet ID mapping table for the network ID and the virtual machine mapping table for creating the platform VM ID and the site VM.
  • the NFV platform saves the created network identity mapping table, subnet identity mapping table, and virtual machine identity mapping table.
  • the NFV platform reconstructs the corresponding network of the site.
  • the NFV platform updates the site information corresponding to the site according to the network synchronization information, and the update processing method is as follows:
  • the NFV platform When the site network identifier of the site exists in the network identifier mapping table, the NFV platform obtains the site subnet identifier in the network synchronization information, and determines whether the site subnet identifier exists in the subnet identifier mapping table, if the site subnet identifier is not When it exists in the subnet ID mapping identifier, the subnet corresponding to the site and the virtual machine under the subnet are created. That is, when the site is built in the NFV platform, the NFV platform will build a subnet for the site.
  • the virtual machine under the subnet and create a subnet identification mapping table of the platform subnet identifier and the site subnet identifier, and create a virtual machine mapping table of the platform virtual machine identifier and the site virtual machine, so that the site can be heavy on the NFV platform Construct the corresponding network of the site.
  • the NFV platform detects that the site subnet identifier corresponding to the site exists in the subnet
  • the NFV platform detects and processes the virtual machine information under the subnet.
  • the detection process is as follows:
  • the NFV platform obtains the site virtual machine identifier in the network synchronization information, and determines whether the site virtual machine identifier in the corresponding subnet exists in the virtual machine identifier mapping table. If the site virtual machine identifier exists in the virtual machine identifier mapping table, the detection is performed. If the virtual machine conflicts with other virtual machines under the subnet, if the virtual machine conflicts with other virtual machines under the subnet, the synchronization failure information is returned to the site. If the virtual machine does not conflict with other virtual machines under the subnet. The virtual machine information corresponding to the virtual machine overwrites the original virtual machine information, that is, if there is no conflict between the virtual machines in the subnet, the NFV platform updates the original virtual machine through the obtained virtual machine information. The information is used to reconstruct the corresponding network of the site through the network synchronization information, thereby ensuring that the corresponding network of the site can be updated in time.
  • the virtual machine ID is not in the virtual machine ID mapping table, check whether the virtual machine conflicts with the existing virtual machine. If the virtual machine conflicts with the existing virtual machine, the synchronization failure information is returned to the site. If the virtual machine does not conflict with the existing virtual machine, create a virtual machine under the subnet, and create and save the virtual machine ID mapping table of the platform virtual machine ID and the site VM ID. That is to say, if the virtual machine does not exist in the current subnet, the NFV platform will create a virtual machine without conflicts under the subnet, so that the corresponding network of the site is reconstructed through the network synchronization information, thereby ensuring that the corresponding network of the site can be updated in time. .
  • the site initiates a connection to the NFV platform, and the NFV platform returns to the site to accept the connection, so that the NFV platform establishes a connection with the site, and the site initiates network synchronization.
  • the NFV platform sends network synchronization information.
  • the NFV platform processes the network synchronization information and performs network reconstruction.
  • the NFV platform will feedback the network synchronization completion response to the site, so that The network information synchronization process is completed.
  • the NFV platform when acquiring the network synchronization information, detects whether the synchronization end identifier reported by the station is received, and if the synchronization end identifier is received, deletes the used network synchronization on the platform. The information, if the synchronization end identifier is not received, continues to detect the network synchronization information reported by the station, that is, after the site completes the reporting of the network synchronization information, the site will send the synchronization end identifier to the NFV platform, so that the NFV platform can Stop network synchronization of the site in time to avoid waste of network resources and reduce NFV The operating pressure of the station.
  • the NFV platform obtains the network synchronization information sent by the station, and determines whether the site network identifier in the network synchronization information exists in the pre-stored network identifier mapping table, if the site network identifier does not exist in the network identifier mapping.
  • the site corresponding network, subnet, and virtual machine are created according to the network synchronization information to construct a site corresponding network; if the site network identifier exists in the network identifier mapping table, the corresponding site is updated according to the obtained network synchronization information.
  • Site Information Through the above method, the network topology of the site can be reconstructed in time, so that the user can view the network deployment situation at multiple levels.
  • FIG. 3 is a schematic structural diagram of a system for network reconfiguration according to an embodiment of the present invention.
  • the system includes: a site access module 301 and a network reconfiguration module 302.
  • the site access module 301 is configured to acquire network synchronization information sent by the site.
  • the network reconfiguration module 302 is configured to determine whether the site network identifier in the network synchronization information exists in the pre-stored network identity mapping table; if the site network identifier does not exist in the network identifier mapping table, The network synchronization information creates the corresponding network, subnet, and virtual machine of the site, and constructs the corresponding network of the site; if the network identifier of the site exists in the network identifier mapping table, according to the obtained network Synchronize the information and update the site information corresponding to the site.
  • system further includes: a database module.
  • the network reconstruction module 202 is further configured to: create a network identifier mapping table of the platform network identifier and the site network identifier, and create a subnet of the platform subnet identifier and the site subnet identifier according to the network synchronization information.
  • a mapping map and a virtual machine identity mapping table that creates a platform virtual machine identity and a site virtual machine identity.
  • a database module configured to save the network identifier mapping table, the subnet identifier mapping table, and the virtual machine identifier mapping table.
  • if the network information identifier exists in the network letter Updating the site information corresponding to the site when the network reconfiguration module 202 updates the mapping information includes: if the network information identifier exists in the network information identifier mapping table, acquiring the network synchronization information a site subnet identifier; determining whether the site subnet identifier exists in the subnet identifier mapping table; if the site subnet identifier does not exist in the subnet identifier mapping table, creating a subnet corresponding to the site And the virtual machine under the subnet; if the site subnet identifier exists in the subnet identifier mapping table, the virtual machine information under the subnet is detected and processed.
  • the network reconfiguration module performs detection processing on the virtual machine information under the subnet, including Obtaining the site virtual machine identifier in the network synchronization information; determining whether the site virtual machine identifier in the corresponding subnet of the site exists in the virtual machine identifier mapping table; if the site virtual machine identifier exists in the When the virtual machine identifies the mapping table, it is detected whether there is a conflict between the virtual machine and other virtual machines under the subnet.
  • the virtual machine If the virtual machine conflicts with other virtual machines under the subnet, Returning the synchronization failure information to the site, if the virtual machine does not conflict with other virtual machines under the subnet, the virtual machine information corresponding to the virtual machine is overwritten with the original virtual machine information;
  • the site virtual machine identifier does not exist in the virtual machine identifier mapping table, detecting whether the virtual machine conflicts with the existing virtual machine, if the virtual machine and the existing virtual machine In the case of a conflict, the synchronization failure information is returned to the site. If the virtual machine does not conflict with the existing virtual machine, the virtual machine under the subnet is created, and the platform virtual machine identifier is created and saved.
  • a virtual machine identity mapping table for the site virtual machine ID If the virtual machine does not conflict with the existing virtual machine, the virtual machine under the subnet is created, and the platform virtual machine identifier is created and saved.
  • the network reconstruction module 202 is further configured to: after creating the site corresponding network, subnet, and virtual machine according to the network synchronization information, and saving the network synchronization information Detecting whether the synchronization end identifier reported by the station is received; if the synchronization end identifier is received, deleting the network synchronization information used on the platform; if the synchronization end identifier is not received, continuing to detect the reported end of the station Network synchronization information.
  • system further includes:
  • the network rendering module is configured to present a network reconstruction structure according to the rendering instructions.
  • a computer readable storage medium storing computer executable instructions for implementing the network reconstruction method when executed by a processor.
  • the computer program can be implemented in a computer readable storage medium, the computer program being executed on a corresponding hardware platform (such as a system, device, device, device, etc.), when executed, including One or a combination of the steps of the method embodiments.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • An embodiment of the present invention provides a method and system for network reconfiguration.
  • the method includes: acquiring network synchronization information sent by a station, and determining whether a site network identifier in the network synchronization information exists in a pre-stored network identifier mapping table, if the site network When the identifier does not exist in the network identifier mapping table, the site corresponding network, subnet, and virtual machine are created according to the network synchronization information, and the site corresponding network is constructed; if the site network identifier exists in the network identifier mapping table, according to the obtained network synchronization Information, update the site information corresponding to the site.
  • the network topology of the site can be reconstructed in time, so that the user can view the network deployment situation at multiple levels.

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Abstract

本申请公开了一种网络重构的方法及系统,该方法包括:获取站点发送的网络同步信息,判断网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中,如果站点网络标识未存在于网络标识映射表中时,根据网络同步信息创建站点对应网络、子网以及虚拟机,构建站点对应网络;如果站点网络标识存在于网络标识映射表中,则根据获取到的网络同步信息,更新站点对应的站点信息。

Description

一种网络重构的方法及系统 技术领域
本申请涉及但不限于网络技术领域,尤其涉及一种网络重构的方法及系统。
背景技术
随着云计算技术和网络虚拟化技术的发展,OpenStack提供了一套部署云的操作平台或工具集,为云计算基础设施服务提供解决方案。OpenStack具有开源、互操作性、可移植性、易用性的特点,而且还提供开发的应用程序编程接口(Application Programming Interface,简称:API),以便进行二次开发,能够方便的与其他系统进行集成,赢得业界越来越多的关注。
网络功能虚拟化(Network Function Virtualization,简称:NFV)平台的目标是通过根据行业标准的服务器、存储和网络设备,来取代私有专用的网元设备。NFV基础设施必须是跨地理位置分布式部署的,NFV架构下的虚拟基础设施管理(Virtualized Infrastructure Manager,简称:VIM)的职责是控制和管理网络功能虚拟化基础设施,如计算、网络和存储等资源,可以通过增强OpenStack的功能实现VIM的功能以支持多站点的NFV平台。
随着云计算的部署和实际的应用,跨地域、大规模以及分级化的部署需求强,应用广。在实际部署时每个站点(可认为地理位置分散的区域或数据中心)均会独立运行一套OpenStack云系统,并且该站点的可处于自治状态独立运行,同时可处于多站点的NFV平台的管理,这样就存在站点处于自治状态下创建的网络、子网和虚拟机,接入NFV平台后,需要在NFV平台上呈现总体的网络信息,这样站点的网络同步信息在NFV平台上重构就成为一个亟待解决的问题。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种网络重构的方法及系统,能够实现站点的网络 同步信息在NFV平台上重构。
一种网络重构的方法,包括:
获取站点发送的网络同步信息。
判断所述网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中。
如果所述站点网络标识未存在于所述网络标识映射表中时,则根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,以构建所述站点对应网络。
如果所述站点网络标识存在于所述网络标识映射表中时,则根据获取到的所述网络同步信息,更新所述站点对应的站点信息。
可选的,所述方法还包括:在根据所述网络同步信息创建所述站点对应网络、子网以及逻辑虚拟机之后,根据网络同步信息,创建平台网络标识与站点网络标识的网络标识映射表、创建平台子网标识与站点子网标识的子网标识映射表以及创建平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
保存所述网络标识映射表、所述子网标识映射表以及所述虚拟机标识映射表。
可选的,如果所述网络信息标识存在于所述网络信息标识映射表中时,更新所述站点对应的站点信息包括:
如果所述网络信息标识存在于所述网络信息标识映射表中时,获取所述网络同步信息中的站点子网标识。
判断所述站点子网标识是否存在于子网标识映射表中。
如果所述站点子网标识未存在于所述子网标识映射表中时,创建所述站点对应的子网以及所述子网下的虚拟机。
如果所述站点子网标识存在于所述子网标识映射表中时,对所述子网下的虚拟机信息进行检测处理。
可选的,如果所述站点子网标识存在于所述子网标识映射表中时,对所 述子网下的虚拟机信息进行检测处理包括:
获取所述网络同步信息中的站点虚拟机标识。
判断所述站点对应子网下的所述站点虚拟机标识是否存在于所述虚拟机标识映射表中。
如果所述站点虚拟机标识存在于所述虚拟机标识映射表中时,检测所述虚拟机与所述子网下的其他虚拟机是否存在冲突,如果所述虚拟机与所述子网下的其他虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与所述子网下的其他虚拟机不存在冲突,则将所述虚拟机对应的所述虚拟机信息覆盖原有的虚拟机信息;
如果所述站点虚拟机标识未存在于所述虚拟机标识映射表中时,检测所述虚拟机与已有的虚拟机是否存在冲突,如果所述虚拟机与已有的虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与已有的虚拟机不存在冲突,则创建所述子网下的虚拟机,并创建以及保存所述平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
可选的,所述方法还包括:在根据所述网络同步信息创建所述站点对应网络、子网以及逻辑虚拟机,并保存所述网络同步信息之后,检测是否接收到站点上报的同步结束标识。
如果接收到所述同步结束标识,则删除平台上已使用的网络同步信息。
如果未接收到所述同步结束标识,则继续检测所述站点上报的网络同步信息。
一种网络重构的系统,包括:站点接入模块和网络重构模块。
站点接入模块,设置为获取站点发送的网络同步信息。
网络重构模块,设置为判断所述网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中;如果所述站点网络标识未存在于所述网络标识映射表中时,则根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,构建所述站点对应网络;如果所述站点网络标识存在于所述网络标识映射表中时,则根据获取到的所述网络同步信息,更新所述站点对应的站点信息。
可选的,所述系统还包括:数据库模块。
所述网络重构模块,还设置为在根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机之后,根据网络同步信息,创建平台网络标识与站点网络标识的网络标识映射表、创建平台子网标识与站点子网标识的子网标识映射表以及创建平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
数据库模块,设置为保存所述网络标识映射表、所述子网标识映射表以及所述虚拟机标识映射表。
可选的,如果所述网络信息标识存在于所述网络信息标识映射表中时,所述网络重构模块更新所述站点对应的站点信息包括:如果所述网络信息标识存在于所述网络信息标识映射表中时,获取所述网络同步信息中的站点子网标识;判断所述站点子网标识是否存在于子网标识映射表中;如果所述站点子网标识未存在于所述子网标识映射表中时,创建所述站点对应的子网以及所述子网下的虚拟机;如果所述站点子网标识存在于所述子网标识映射表中时,对所述子网下的虚拟机信息进行检测处理。
可选的,如果所述站点子网标识存在于所述子网标识映射表中时,所述网络重构模块对所述子网下的虚拟机信息进行检测处理包括:获取所述网络同步信息中的站点虚拟机标识;判断所述站点对应子网下的所述站点虚拟机标识是否存在于所述虚拟机标识映射表中;如果所述站点虚拟机标识存在于所述虚拟机标识映射表中时,检测所述虚拟机与所述子网下的其他虚拟机是否存在冲突,如果所述虚拟机与所述子网下的其他虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与所述子网下的其他虚拟机不存在冲突,则将所述虚拟机对应的所述虚拟机信息覆盖原有的虚拟机信息;如果所述站点虚拟机标识未存在于所述虚拟机标识映射表中时,检测所述虚拟机与已有的虚拟机是否存在冲突,如果所述虚拟机与已有的虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与已有的虚拟机不存在冲突,则创建所述子网下的虚拟机,并创建以及保存所述平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
可选的,所述网络重构模块,还设置为在根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,并保存所述网络同步信息之后,检测是 否接收到站点上报的同步结束标识;如果接收到所述同步结束标识,则删除平台上已使用的网络同步信息;如果未接收到所述同步结束标识,则继续检测所述站点上报的网络同步信息。
一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令被处理器执行时实现所述的网络重构的方法。
本发明实施例提供一种网络重构的方法和系统,该方法包括:获取站点发送的网络同步信息,判断网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中,如果站点网络标识未存在于网络标识映射表中时,根据网络同步信息创建站点对应网络、子网以及虚拟机,构建站点对应网络;如果站点网络标识存在于网络标识映射表中,则根据获取到的网络同步信息,更新站点对应的站点信息。通过上述的方法可以及时的将站点的网络拓扑结构进行重构,这样方便用户多层次的查看网络部署情况。
在阅读并理解了附图和详细描述后,可以明白其他方面。
附图概述
图1为本发明实施例中一种网络重构的方法流程图;
图2为本发明实施例中站点与NFV平台的交互示意图;
图3为本发明实施例中一种网络重构的系统结构示意图。
本发明的实施方式
下文中将结合附图对本发明的实施例进行详细说明。需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
本发明实施例提供一种网络重构的方法及系统,该方法包括:获取站点发送的网络同步信息,判断网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中,如果站点网络标识未存在于网络标识映射表中时,根据网络同步信息创建站点对应网络、子网以及虚拟机,构建站点对应网络;如果站点网络标识存在于网络标识映射表中,则根据获取到的网络同步信息,更新站点对应的站点信息。通过上述的方法可以及时的将站点的网络拓扑结构进行重构,这样方便用户多层次的查看网络部署情况。
下面通过附图以及实施例对本发明实施例技术方案做详细的说明,应当理解,本发明实施例以及实施例中的技术特征只是对本发明实施例技术方案的说明,而不是限定,在不冲突的情况下,本发明实施例以及实施例中的技术特征可以相互组合。
如图1所示为本发明实施例中一种网络重构的方法的流程图,该方法包括步骤S101-S104:
S101,获取站点发送的网络同步信息。
S102,判断网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中。
如果站点网络标识未存在于网络标识映射表中时,则执行S103,如果站点网络标识存在于网络标识映射表中时,则执行S104。
S103,根据网络同步信息创建站点对应网络、子网以及虚拟机,以构建站点对应网络。
S104,根据获取到的网络同步信息,更新站点对应的站点信息。
在本发明实施例中,该方法可以应用到网络功能虚拟化平台(Network Function Virtualization,简称:NFV)中,为了保证该NFV平台能够及时的更新重构网络结构,因此,NFV平台将实时的获取到下属站点的网络同步信息,在本发明实施例中,该网络同步信息可以为如下的格式:
{sitname:{networkName1:{sitNetUUID,sitSubnetName1:{sitSubnetUUID,VM1:{sitvmUUID,otherVMIntfo},otherSubnetInfo},otherNetInfo}}}
其中,sitname表示站点名;networkName1表示网络名;sitNetUUID表示该网络在站点内标识的ID值,即:站点网络标识;nsitSubnetName1表示该网络下的子网1的名称;sitSubnetUUID表示子网在站点内标识的ID值,即:站点子网标识;VM1表示处于该子网下的虚拟机1;sitvmUUID表示虚拟机在站点内标识的ID值,即:站点虚拟机标识;otherVMIntfo表示虚拟机的其它信息,otherSubnetInfo表示子网的其它信息;otherNetInfo表示网络的其它信息。
可选地,在本发明实施例中,NFV平台中预存了已接入过该NFV平台 的站点的多种映射表,比如说网络标识映射表、子网标识映射表、虚拟机标识映射表,在网络标识映射表中保存了已接入过NFV平台的站点的站点网络标识,在子网标识映射表中保存了已接入过NFV平台的站点的站点子网标识,在虚拟机标识映射表中保存了已接入过NFV平台的站点的站点虚拟机标识。
根据上述的已保存的各种映射表,NFV平台获取到某一个站点上报的具有上述格式的网络同步信息之后,NFV平台将首先在网络同步信息中获取到站点网络标识,NFV平台将获取到的站点网络标识与网络标识映射表中每个站点网络标识进行匹配,如果是该网络同步信息中的站点网络标识未存在于网络标识映射表中时,NFV平台将根据网络同步信息创建站点对应网络、子网以及虚拟机,在创建站点对应网络、子网以及虚拟机之后,NFV平台将根据网络同步信息,创建平台网络标识与站点网络标识的网络标识映射表,以及创建平台子网标识与站点子网标识的子网标识映射表,以及创建平台虚拟机标识与站点虚拟机的虚拟机映射表。NFV平台保存创建的网络标识映射表、子网标识映射表以及虚拟机标识映射表。
根据NFV平台针对该站点创建的网络、子网、虚拟机以及网络标识映射表、子网标识映射表、虚拟机标识映射表,NFV平台将重构出该站点对应网络。
如果是站点的站点网络标识存在于网络标识映射表中时,NFV平台将根据网络同步信息,更新该站点对应的站点信息,更新处理方法如下:
站点的站点网络标识存在于网络标识映射表中时,NFV平台将获取网络同步信息中的站点子网标识,判断站点子网标识是否存在于子网标识映射表中,如果是站点子网标识未存在于子网标识映射标识中时,创建站点对应的子网以及该子网下的虚拟机,也就是说,该站点在NFV平台中为构建完整网络时,NFV平台将为该站点构建子网以及子网下的虚拟机,并且创建平台子网标识与站点子网标识的子网标识映射表,以及创建平台虚拟机标识与站点虚拟机的虚拟机映射表,这样使得站点在NFV平台能够重构该站点对应网络。
可选地,如果是NFV平台检测到该站点对应的站点子网标识存在于子网 标识映射表中时,NFV平台对该子网下的虚拟机信息进行检测处理,检测处理过程如下:
NFV平台获取网络同步信息中的站点虚拟机标识,判断站点对应子网下的站点虚拟机标识是否存在于虚拟机标识映射表中,如果站点虚拟机标识存在于虚拟机标识映射表中时,检测虚拟机与子网下的其他虚拟机是否存在冲突,如果虚拟机与子网下的其他虚拟机存在冲突,则向站点返回同步失败信息,如果虚拟机与子网下的其他虚拟机不存在冲突,则将虚拟机对应的虚拟机信息覆盖原有的虚拟机信息,也就是说,子网下虚拟机不存在冲突的情况下,NFV平台将通过获取到的虚拟机信息更新原有的虚拟机信息,从而通过网络同步信息重构该站点对应网络,进而保证站点对应网络能够及时更新。
如果是站点虚拟机标识未存在虚拟机标识映射表中时,检测虚拟机与已有的虚拟机是否存在冲突,如果虚拟机与已有的虚拟机存在冲突,则向站点返回同步失败信息,如果虚拟机与已有的虚拟机不存在冲突,则创建子网下的虚拟机,并创建以及保存平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。也就是说,在虚拟机不存在当前子网下,NFV平台将在该子网下创建不存在冲突的虚拟机,这样通过网络同步信息重构该站点对应网络,进而保证站点对应网络能够及时更新。
下面通过图2对上述的内容进行简要说明,在图2中,站点向NFV平台发起连接,NFV平台向站点返回接受连接,这样NFV平台与站点之间就建立连接,站点启动网络同步,站点向NFV平台发送网络同步信息,NFV平台接收到该网络同步信息之后,NFV平台处理该网络同步信息,并进行网络重构,在重构完成之后,NFV平台将向站点反馈网络同步完成响应,这样就完成了网络信息同步过程。
可选地,在本发明实施例中,NFV平台在获取网络同步信息时,将检测是否接收到站点上报的同步结束标识,如果是接收到同步结束标识时,则删除平台上已使用的网络同步信息,如果未接收到同步结束标识时,则继续检测站点上报的网络同步信息,也就是说,站点在完成网络同步信息的上报之后,站点会将同步结束标识发送给NFV平台,这样NFV平台能够及时停止对该站点的网络同步,从而避免出现网络资源浪费,并且也可以减少NFV平 台的运行压力。
综上来讲,在本发明实施例中NFV平台获取站点发送的网络同步信息,判断网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中,如果站点网络标识未存在于网络标识映射表中时,根据网络同步信息创建站点对应网络、子网以及虚拟机,以构建站点对应网络;如果站点网络标识存在于网络标识映射表中,则根据获取到的网络同步信息,更新站点对应的站点信息。通过上述的方法可以及时的将站点的网络拓扑结构进行重构,这样方便用户多层次的查看网络部署情况。
另外需要说明的是,上述的过程说明的是一个站点对应的网络同步,其他站点的同步过程上述的过程一致,在本发明实施例就不再一一说明。
对应本发明实施例中一种网络重构的方法,本发明实施例中还提供了一种网络重构的系统,如图3所示为本发明实施例中一种网络重构的系统结构示意图,该系统包括:站点接入模块301和网络重构模块302。
站点接入模块301,设置为获取所述站点发送的网络同步信息。
网络重构模块302,设置为判断所述网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中;如果所述站点网络标识未存在于所述网络标识映射表中时,则根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,构建所述站点对应网络;如果所述站点网络标识存在于所述网络标识映射表中时,则根据获取到的所述网络同步信息,更新所述站点对应的站点信息。
可选地,所述系统还包括:数据库模块。
在本发明实施例中,所述网络重构模块202,还设置为根据网络同步信息,创建平台网络标识与站点网络标识的网络标识映射表、创建平台子网标识与站点子网标识的子网标识映射表以及创建平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
数据库模块,设置为保存所述网络标识映射表、所述子网标识映射表以及所述虚拟机标识映射表。
可选地,在本发明实施例中,如果所述网络信息标识存在于所述网络信 息标识映射表中时,所述网络重构模块202更新所述站点对应的站点信息包括:如果所述网络信息标识存在于所述网络信息标识映射表中时,获取所述网络同步信息中的站点子网标识;判断所述站点子网标识是否存在于子网标识映射表中;如果所述站点子网标识未存在于所述子网标识映射表中时,创建所述站点对应的子网以及所述子网下的虚拟机;如果所述站点子网标识存在于所述子网标识映射表中时,对所述子网下的虚拟机信息进行检测处理。
可选地,在本发明实施例中,如果所述站点子网标识存在于所述子网标识映射表中时,所述网络重构模块对所述子网下的虚拟机信息进行检测处理包括:获取所述网络同步信息中的站点虚拟机标识;判断所述站点对应子网下的所述站点虚拟机标识是否存在于所述虚拟机标识映射表中;如果所述站点虚拟机标识存在于所述虚拟机标识映射表中时,检测所述虚拟机与所述子网下的其他虚拟机是否存在冲突,如果所述虚拟机与所述子网下的其他虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与所述子网下的其他虚拟机不存在冲突,则将所述虚拟机对应的所述虚拟机信息覆盖原有的虚拟机信息;如果所述站点虚拟机标识未存在于所述虚拟机标识映射表中时,检测所述虚拟机与已有的虚拟机是否存在冲突,如果所述虚拟机与已有的虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与已有的虚拟机不存在冲突,则创建所述子网下的虚拟机,并创建以及保存所述平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
可选地,在本发明实施例中,所述网络重构模块202,还设置为在根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,并保存所述网络同步信息之后,检测是否接收到站点上报的同步结束标识;如果接收到所述同步结束标识,则删除平台上已使用的网络同步信息;如果未接收到所述同步结束标识,则继续检测所述站点上报的网络同步信息。
可选地,在本发明实施例中,该系统还包括:
网络呈现模块,设置为根据呈现指令,呈现网络重构结构。
一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令被处理器执行时实现所述的网络重构的方法。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计 算机程序流程来实现,所述计算机程序可以存储于一计算机可读存储介质中,所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行,在执行时,包括方法实施例的步骤之一或其组合。
可选地,上述实施例的全部或部分步骤也可以使用集成电路来实现,这些步骤可以被分别制作成一个个集成电路模块,或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现,它们可以集中在单个的计算装置上,也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器,磁盘或光盘等。
工业实用性
本发明实施例提供一种网络重构的方法和系统,该方法包括:获取站点发送的网络同步信息,判断网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中,如果站点网络标识未存在于网络标识映射表中时,根据网络同步信息创建站点对应网络、子网以及虚拟机,构建站点对应网络;如果站点网络标识存在于网络标识映射表中,则根据获取到的网络同步信息,更新站点对应的站点信息。通过上述的方法可以及时的将站点的网络拓扑结构进行重构,这样方便用户多层次的查看网络部署情况。

Claims (11)

  1. 一种网络重构的方法,包括:
    获取站点发送的网络同步信息;
    判断所述网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中;
    如果所述站点网络标识未存在于所述网络标识映射表中时,则根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,构建所述站点对应网络;
    如果所述站点网络标识存在于所述网络标识映射表中时,则根据获取到的所述网络同步信息,更新所述站点对应的站点信息。
  2. 如权利要求1所述的网络重构的方法,所述方法还包括:在根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机之后,根据网络同步信息,创建平台网络标识与站点网络标识的网络标识映射表、创建平台子网标识与站点子网标识的子网标识映射表以及创建平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表;
    保存所述网络标识映射表、所述子网标识映射表以及所述虚拟机标识映射表。
  3. 如权利要求2所述的网络重构的方法,其中,所述如果所述网络信息标识存在于所述网络信息标识映射表中时,更新所述站点对应的站点信息包括:
    如果所述网络信息标识存在于所述网络信息标识映射表中时,获取所述网络同步信息中的站点子网标识;
    判断所述站点子网标识是否存在于所述子网标识映射表中;
    如果所述站点子网标识未存在于所述子网标识映射表中时,创建所述站点对应的子网以及所述子网下的虚拟机;
    如果所述站点子网标识存在于所述子网标识映射表中时,对所述子网下的虚拟机信息进行检测处理。
  4. 如权利要求3所述的网络重构的方法,其中,所述如果所述站点子网标识存在于所述子网标识映射表中时,对所述子网下的虚拟机信息进行检测处理包括:
    获取所述网络同步信息中的站点虚拟机标识;
    判断所述站点对应子网下的所述站点虚拟机标识是否存在于所述虚拟机标识映射表中;
    如果所述站点虚拟机标识存在于所述虚拟机标识映射表中时,检测所述虚拟机与所述子网下的其他虚拟机是否存在冲突,如果所述虚拟机与所述子网下的其他虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与所述子网下的其他虚拟机不存在冲突,则将所述虚拟机对应的所述虚拟机信息覆盖原有的虚拟机信息;
    如果所述站点虚拟机标识未存在于所述虚拟机标识映射表中时,检测所述虚拟机与已有的虚拟机是否存在冲突,如果所述虚拟机与已有的虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与已有的虚拟机不存在冲突,则创建所述子网下的虚拟机,并创建以及保存所述平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
  5. 如权利要求1所述的网络重构的方法,所述方法还包括:在根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,并保存所述网络同步信息之后,检测是否接收到站点上报的同步结束标识;
    如果接收到所述同步结束标识,则删除平台上已使用的网络同步信息;
    如果未接收到所述同步结束标识,则继续检测所述站点上报的网络同步信息。
  6. 一种网络重构的系统,包括:站点接入模块和网络重构模块;
    所述站点接入模块,设置为获取站点发送的网络同步信息;
    所述网络重构模块,设置为判断所述网络同步信息中的站点网络标识是否存在于预存的网络标识映射表中;如果所述站点网络标识未存在于所述网络标识映射表中时,则根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,构建所述站点对应网络;如果所述站点网络标识存在于所述网 络标识映射表中时,则根据获取到的所述网络同步信息,更新所述站点对应的站点信息。
  7. 如权利要求6所述的网络重构的系统,所述系统还包括:数据库模块;
    所述网络重构模块,还设置为在根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机之后,根据网络同步信息,创建平台网络标识与站点网络标识的网络标识映射表、创建平台子网标识与站点子网标识的子网标识映射表以及创建平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表;
    数据库模块,设置为保存所述网络标识映射表、所述子网标识映射表以及所述虚拟机标识映射表。
  8. 如权利要求7所述的网络重构的系统,其中,如果所述网络信息标识存在于所述网络信息标识映射表中时,所述网络重构模块更新所述站点对应的站点信息包括:
    如果所述网络信息标识存在于所述网络信息标识映射表中时,获取所述网络同步信息中的站点子网标识;判断所述站点子网标识是否存在于所述子网标识映射表中;如果所述站点子网标识未存在于所述子网标识映射表中时,创建所述站点对应的子网以及所述子网下的虚拟机;如果所述站点子网标识存在于所述子网标识映射表中时,对所述子网下的虚拟机信息进行检测处理。
  9. 如权利要求8所述的网络重构的系统,其中,如果所述站点子网标识存在于所述子网标识映射表中时,所述网络重构模块对所述子网下的虚拟机信息进行检测处理包括:
    获取所述网络同步信息中的站点虚拟机标识;判断所述站点对应子网下的所述站点虚拟机标识是否存在于所述虚拟机标识映射表中;如果所述站点虚拟机标识存在于所述虚拟机标识映射表中时,检测所述虚拟机与所述子网下的其他虚拟机是否存在冲突,如果所述虚拟机与所述子网下的其他虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与所述子网下的其他虚拟机不存在冲突,则将所述虚拟机对应的所述虚拟机信息覆盖原有的虚拟机信息;如果所述站点虚拟机标识未存在于所述虚拟机标识映射表中时,检测所述虚拟机与已有的虚拟机是否存在冲突,如果所述虚拟机与已有 的虚拟机存在冲突,则向所述站点返回同步失败信息,如果所述虚拟机与已有的虚拟机不存在冲突,则创建所述子网下的虚拟机,并创建以及保存所述平台虚拟机标识与站点虚拟机标识的虚拟机标识映射表。
  10. 如权利要求6所述的网络重构的系统,所述网络重构模块,还设置为在根据所述网络同步信息创建所述站点对应网络、子网以及虚拟机,并保存所述网络同步信息之后,检测是否接收到站点上报的同步结束标识;如果接收到所述同步结束标识,则删除平台上已使用的网络同步信息;如果未接收到所述同步结束标识,则继续检测所述站点上报的网络同步信息。
  11. 一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令被处理器执行时实现权利要求1至5任意一项所述的网络重构的方法。
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