CN109921929B - Network upgrading method, device, equipment and medium - Google Patents
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Abstract
The application discloses a network upgrading method, a device, equipment and a medium, wherein the method comprises the following steps: creating a target mapping file corresponding to a memory used by a network object to be upgraded in a first process; wherein, the first process is the corresponding process before upgrading; when the upgrading of the network object to be upgraded is started, a second process is established, and the target mapping file is mapped to the second process; and after the network object to be upgraded is upgraded, controlling the first process to quit and enabling the second process to take over the work of the first process. According to the method and the device, memory sharing is achieved among the processes in a file mapping mode, content information of the network object is reserved under the condition that reconstruction is not needed, hot upgrading is achieved, network disconnection and reconnection which may be caused by traditional upgrading are avoided, in addition, due to the fact that sharing of the content information of the network object is achieved based on mapping, the content information of the network object does not need to be transmitted among the processes, and the problems of poor timeliness and easiness in error are avoided.
Description
Technical Field
The present application relates to the field of network technologies, and in particular, to a method, an apparatus, a device, and a medium for upgrading a network.
Background
At present, when network objects such as SESSION and ALG (Application Layer Gateway) are upgraded, on one hand, the problem of network disconnection and reconnection is easily caused, and the normal service experience of a client is influenced, on the other hand, before and after the upgrade, the related content information of the network objects can be transmitted from an old process to a new process in an inter-process communication mode, but the mode for keeping the related content information of the network objects has the problems of poor timeliness, easy error and the like.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method, an apparatus, a device, and a medium for upgrading a network, which can avoid a situation of network disconnection during upgrading, and avoid problems of poor timeliness and error proneness when preserving related content information of a network object. The specific scheme is as follows:
in a first aspect, the present application discloses a network upgrade method, including:
creating a target mapping file corresponding to a memory used by a network object to be upgraded in a first process; the first process is a corresponding process before upgrading;
when the network object to be upgraded is started, creating a second process, and mapping the target mapping file to the second process;
and after the network object to be upgraded is upgraded, controlling the first process to exit, and enabling the second process to take over the work of the first process.
Optionally, the creating a target mapping file corresponding to a memory used by the network object to be upgraded in the first process includes:
and generating a corresponding mapping file according to the specific information of the network object to be upgraded in the memory file system in the first process so as to obtain the target mapping file.
Optionally, the memory file system is a tmpfs file system.
Optionally, the mapping the target mapping file to the second process includes:
and mapping the target mapping file to the second process by using mmap.
Optionally, the network object to be upgraded includes SESSION or ALG.
Optionally, before creating the target mapping file corresponding to the memory used by the network object to be upgraded in the first process, the method further includes:
registering the network object to be upgraded to a mapping system to obtain a target mapping area which is positioned in the mapping system and corresponds to the network object to be upgraded;
correspondingly, the creating of the target mapping file corresponding to the memory used by the network object to be upgraded in the first process includes:
and creating the target mapping file corresponding to the memory used by the network object to be upgraded in the first process on the target mapping area.
Optionally, before creating, on the target mapping area, the target mapping file corresponding to the memory used by the network object to be upgraded in the first process, the method further includes:
generating corresponding first metadata according to the current attribute information of the target mapping area;
correspondingly, when the upgrading of the network object to be upgraded is started, creating a second process, and before the target mapping file is mapped to the second process, the method further includes:
generating corresponding second metadata according to the current attribute information of the target mapping area;
judging whether the first metadata and the second metadata are consistent;
if yes, the upgrading of the network object to be upgraded is allowed to be started.
Optionally, before generating the corresponding first metadata according to the current attribute information of the target mapping region, the method further includes:
storing the current attribute information of the target mapping area into a first mapping area in the target mapping area;
the current attribute information of the target mapping area comprises version information of the network object to be upgraded, and type information and size information of the other mapping areas except the first mapping area in the target mapping area.
Optionally, the mapping the target mapping file to the second process includes:
and calculating a mapping address corresponding to the target mapping region in the process address space of the second process by using a pre-fixed base address in the process address space of the second process, and then mapping the target mapping file on the target mapping region to the second process according to the mapping address.
In a second aspect, the present application discloses a network upgrade apparatus, including:
the file creating module is used for creating a target mapping file corresponding to a memory used by the network object to be upgraded in the first process; the first process is a corresponding process before upgrading;
the file mapping module is used for creating a second process when the upgrading of the network object to be upgraded is started, and mapping the target mapping file to the second process;
and the process control module is used for controlling the first process to quit and enabling the second process to take over the work of the first process after the upgrading of the network object to be upgraded is completed.
In a third aspect, the present application discloses a network upgrade device, including:
a memory for storing a computer program;
a processor for executing the computer program to implement the network upgrade method disclosed in the foregoing.
In a fourth aspect, the present application discloses a computer readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the network upgrade method disclosed above.
Therefore, before upgrading, a target mapping file corresponding to a memory used by a network object to be upgraded in a first process is created, then when upgrading is started, a second process is created, the target mapping file is mapped to the second process, after upgrading is completed, the first process is controlled to quit, and the second process replaces the work of the first process. Therefore, the memory sharing is realized among the processes in a file mapping mode, so that the content information of the network object is reserved under the condition of no reconstruction, hot upgrading is realized, the condition of network disconnection and reconnection possibly caused by traditional upgrading is avoided, and in addition, the content information of the network object is shared based on mapping, the content information of the network object does not need to be transmitted among the processes, and the problems of poor timeliness and easy error are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a network upgrading method disclosed in an embodiment of the present application;
fig. 2 is a flowchart of a specific network upgrading method disclosed in an embodiment of the present application;
fig. 3 is a flowchart of a specific network upgrading method disclosed in the embodiment of the present application;
fig. 4 is a flowchart of a specific network upgrading method disclosed in the embodiment of the present application;
FIG. 5 is a schematic illustration of a mapping disclosed in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a network upgrade apparatus disclosed in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
At present, when network objects such as SESSION, ALG and the like are upgraded, on one hand, the problem of network disconnection and reconnection is easily caused, and the normal service experience of a client is influenced, on the other hand, before and after the upgrade, the related content information of the network objects can be transmitted from an old process to a new process in an inter-process communication mode, but the mode for keeping the related content information of the network objects has the problems of poor timeliness, easy error and the like. Therefore, the network upgrading scheme is provided, the situation of network disconnection and reconnection can be avoided during upgrading, and the problems of poor timeliness and easiness in error are avoided when the related content information of the network object is kept.
Referring to fig. 1, an embodiment of the present application discloses a network upgrade method, including:
step S11: creating a target mapping file corresponding to a memory used by a network object to be upgraded in a first process; the first process is a corresponding process before upgrading;
step S12: when the network object to be upgraded is started, creating a second process, and mapping the target mapping file to the second process;
step S13: and after the network object to be upgraded is upgraded, controlling the first process to exit, and enabling the second process to take over the work of the first process.
In this embodiment, the network object to be upgraded may specifically include, but is not limited to, SESSION or ALG. In addition, it should be noted that the technical solution in the present application may be specifically applicable to various different specific service scenarios, such as ACL (Access Control List), NAT (Network Address Translation), and the like.
Therefore, in the embodiment of the application, before the upgrade, the target mapping file corresponding to the memory used by the network object to be upgraded in the first process is created, then when the upgrade is started, the second process is created, the target mapping file is mapped to the second process, after the upgrade is completed, the first process is controlled to exit, and the second process replaces the work of the first process. Therefore, the memory sharing is realized among the processes in a file mapping mode, so that the content information of the network object is reserved under the condition of no reconstruction, hot upgrading is realized, the condition of network disconnection and reconnection possibly caused by traditional upgrading is avoided, and in addition, the content information of the network object is shared based on mapping, the content information of the network object does not need to be transmitted among the processes, and the problems of poor timeliness and easiness in error are avoided.
Referring to fig. 2, an embodiment of the present application discloses a specific hot upgrade method, including:
step S21: generating a corresponding mapping file according to specific information of the network object to be upgraded in the memory file system in the first process so as to obtain a target mapping file; and the first process is a corresponding process before upgrading.
In order to ensure better processing performance, the memory file system in this embodiment may preferentially adopt a tmpfs file system. Of course, other common types of memory file systems may be used if the system is not mounted or does not support the tmpfs file system.
Step S22: when the network object to be upgraded is started, a second process is created, and the mmap is used for mapping the target mapping file to the second process.
Step S23: and after the network object to be upgraded is upgraded, controlling the first process to exit, and enabling the second process to take over the work of the first process.
Referring to fig. 3, an embodiment of the present application discloses a specific hot upgrade method, including:
step S31: registering a network object to be upgraded to a mapping system to obtain a target mapping area corresponding to the network object to be upgraded and located in the mapping system.
It is noted that for different types of network objects, there may be a difference in the number of mapping regions in their corresponding target mapping regions. For example, for the SESSION to be upgraded, the corresponding target mapping region may include a plurality of mapping regions, and for the ALG to be upgraded, only one mapping region is usually included in the corresponding target mapping region to meet the actual requirement.
Step S32: creating the target mapping file corresponding to the memory used by the network object to be upgraded in the first process on the target mapping area; and the first process is a corresponding process before upgrading.
Step S33: when the network object to be upgraded is started, a second process is created, and the target mapping file is mapped to the second process.
Step S34: and after the network object to be upgraded is upgraded, controlling the first process to exit, and enabling the second process to take over the work of the first process.
That is, in this embodiment, before creating the target mapping file, the network object to be upgraded is registered in the mapping system, so as to obtain a target mapping area located in the mapping system and corresponding to the network object to be upgraded, and then the target mapping file is created in the target mapping area. It is understood that the above technical solution can be applied to SESSION, ALG or other types of network objects. By registering different types of network objects to be upgraded to the mapping system, on one hand, unified management of different network objects can be conveniently realized, on the other hand, upgrading of other new types of network objects can be accommodated, and a foundation is laid for subsequent service expansion.
Referring to fig. 4, an embodiment of the present application discloses a specific hot upgrade method, including:
step S41: registering a network object to be upgraded to a mapping system to obtain a target mapping area corresponding to the network object to be upgraded and located in the mapping system.
Step S42: and generating corresponding first metadata according to the current attribute information of the target mapping area.
It can be understood that, before generating the corresponding first metadata according to the current attribute information of the target mapping region, the method may further include: and storing the current attribute information of the target mapping area into a first mapping area in the target mapping area. Therefore, when corresponding metadata is generated according to the current attribute information of the target mapping area, the corresponding current attribute information can be read from the first mapping area, so that the read current attribute information is utilized to generate the corresponding metadata.
The current attribute information of the target mapping region includes, but is not limited to, version information of the network object to be upgraded, and type information and size information of the remaining mapping regions in the target mapping region except for the first mapping region. It is understood that the version information may specifically include version numbers, version specification information, and the like. In this embodiment, the internal part of the network object to be upgraded may support storing the version number, but does not support superposition when hot upgrade is performed. In addition, in this embodiment, each mapping region of the target mapping region may also perform display control according to a version number.
Step S43: creating the target mapping file corresponding to the memory used by the network object to be upgraded in the first process on the target mapping area; and the first process is a corresponding process before upgrading.
Step S44: and generating corresponding second metadata according to the current attribute information of the target mapping area.
Step S45: and judging whether the first metadata and the second metadata are consistent.
Step S46: if so, the upgrading of the network object to be upgraded is allowed to be started, then a second process is created, a mapping address which is located in the process address space of the second process and corresponds to the target mapping area is calculated by using a pre-fixed base address in the process address space of the second process, and then the target mapping file on the target mapping area is mapped to the second process according to the mapping address.
That is, in this embodiment, before mapping the target mapping file to the second process, it is determined whether the first metadata and the second metadata are consistent, and if not, it indicates that the data structure of the network object such as SESSION is changed, and at this time, the previous and subsequent versions cannot be shared, so that the upgrade operation is not allowed to be started, and thus, the target mapping file needs to be prohibited from being mapped to the second process; if so, the upgrade operation may be allowed to be initiated, i.e., the target mapping file may be allowed to be mapped to the second process. It can be seen that the properties of the first metadata and the second metadata in this embodiment are similar to the fingerprint information, and whether hot upgrade is currently supported can be determined through comparison between the two.
In addition, in this embodiment, a base address is fixed in advance in a process address space of the second process, a corresponding mapping address can be directly calculated subsequently based on the base address, and then, during hot upgrade, the target mapping file is directly mapped to the second process according to the mapping address without depending on redundant new process table entries, so that the purpose of fast sharing and retaining is achieved.
Step S47: and after the network object to be upgraded is upgraded, controlling the first process to exit, and enabling the second process to take over the work of the first process.
The following describes the technical solution in the present application in detail by taking the upgrade of SESSION as an example. The method comprises the following specific steps:
registering the SESSION to be upgraded to a mapping system to obtain a target mapping region model corresponding to the SESSION to be upgraded in the mapping system, and generating corresponding first metadata _ meta _ data1 according to current attribute information of the target mapping region model. And on the target mapping region MODELE, generating a corresponding mapping file according to the specific information of the SESSION to be upgraded in the first process, which is located in the tmpfs file system, so as to obtain a target mapping file. And the first process is a corresponding process before upgrading. The target mapping region MODULE includes N mapping region MODULEs, which are MODULE1 to MODULE en, as shown in fig. 5.
After the tmpfs file system is initialized, judging whether the hot upgrading mode is allowed to be started or not, if so, starting the hot upgrading mode, and if not, starting the normal working mode. Wherein, the judging whether to allow the hot upgrade mode to be started specifically comprises: initializing a bitmap for allocating a dynamic type virtual device id, and generating corresponding second metadata _ meta _ data2 according to the current attribute information of the target mapping region MODULE; judging whether the first metadata _ meta _ data1 and the second metadata _ meta _ data2 are consistent, whether the SESSION version numbers are consistent before and after the SESSION version numbers are judged, and whether the virtual device id storage is correct is judged; if the judgment results of the three judgments are yes, the hot upgrade mode is judged to be allowed to be started, otherwise, the hot upgrade mode is judged not to be allowed to be started, and at the moment, only the normal working mode is allowed to be started. In the normal operating mode, all mapping files except the metadata _ meta _ data need to be deleted for subsequent remapping, and all variables are initialized normally. As shown in fig. 5, when the hot upgrade mode is started, a second process is created, a mapping address corresponding to the target mapping region MODULE in the process address space of the second process is calculated by using a base address base _ addr fixed in advance in the process address space of the second process, then the target mapping file in the target mapping region MODULE is mapped to the second process by using mmap according to the mapping address, and then variables such as lock and the like which are not shared are initialized. It is understood that all dynamic types of files may be specifically included in the target mapping file.
Referring to fig. 6, an embodiment of the present application further discloses a network upgrade apparatus, including:
the file creating module 11 is configured to create a target mapping file corresponding to a memory used by a network object to be upgraded in a first process; the first process is a corresponding process before upgrading;
the file mapping module 12 is configured to create a second process when the upgrade of the network object to be upgraded is started, and map the target mapping file to the second process;
and the process control module 13 is configured to control the first process to exit and enable the second process to take over the work of the first process after the network object to be upgraded is upgraded.
Therefore, in the embodiment of the application, before the upgrade, the target mapping file corresponding to the memory used by the network object to be upgraded in the first process is created, then when the upgrade is started, the second process is created, the target mapping file is mapped to the second process, after the upgrade is completed, the first process is controlled to exit, and the second process replaces the work of the first process. Therefore, the memory sharing is realized among the processes in a file mapping mode, so that the content information of the network object is reserved under the condition of no reconstruction, hot upgrading is realized, the condition of network disconnection and reconnection possibly caused by traditional upgrading is avoided, and in addition, the content information of the network object is shared based on mapping, the content information of the network object does not need to be transmitted among the processes, and the problems of poor timeliness and easiness in error are avoided.
In this embodiment, the file creating module 11 may be specifically configured to generate a corresponding mapping file according to specific information of the network object to be upgraded in the memory file system in the first process, so as to obtain the target mapping file.
In order to ensure better processing performance, the memory file system in this embodiment may preferentially adopt a tmpfs file system. Of course, other common types of memory file systems may be used if the system is not mounted or does not support the tmpfs file system.
In this embodiment, the file mapping module 12 may be specifically configured to map the target mapping file to the second process by using mmap.
In this embodiment, the network object to be upgraded may specifically include, but is not limited to, SESSION or ALG. In addition, it should be noted that the technical solution in the present application may be specifically applicable to various different specific service scenarios, such as ACL and NAT.
Further, the network upgrading apparatus in this embodiment may further include:
the object registration module is used for registering the network object to be upgraded to a mapping system to obtain a target mapping area which is positioned in the mapping system and corresponds to the network object to be upgraded;
correspondingly, the file creating module 11 may be specifically configured to create, on the target mapping area, the target mapping file corresponding to the memory used by the network object to be upgraded in the first process.
Further, the network upgrading apparatus in this embodiment may further include:
the first metadata generation module is used for generating corresponding first metadata according to the current attribute information of the target mapping area;
the second metadata generation module is used for generating corresponding second metadata according to the current attribute information of the target mapping area;
and the metadata judgment module is used for judging whether the first metadata and the second metadata are consistent, and if so, the upgrading of the network object to be upgraded is allowed to be started.
Further, the network upgrading apparatus in this embodiment may further include:
the attribute information storage module is used for storing the current attribute information of the target mapping area into a first mapping area in the target mapping area;
the current attribute information of the target mapping area comprises version information of the network object to be upgraded, and type information and size information of the other mapping areas except the first mapping area in the target mapping area.
Further, the file mapping module 12 may be specifically configured to calculate, by using a base address fixed in advance in a process address space of the second process, a mapping address corresponding to the target mapping region and located in the process address space of the second process, and then map the target mapping file on the target mapping region to the second process according to the mapping address.
For a more detailed working process of each module, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not described herein again.
Further, the present application also discloses a network upgrading device, including:
a memory for storing a computer program;
and the processor is used for executing the computer program to realize the network upgrading method disclosed by the foregoing embodiment.
Further, the present application also discloses a computer readable storage medium for storing a computer program, wherein the computer program is executed by a processor to implement the network upgrading method disclosed in the foregoing embodiment.
For the specific steps of the network upgrading method, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not described herein again.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing describes in detail a method, an apparatus, a device, and a medium for network upgrade provided by the present application, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the foregoing embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (11)
1. A method for upgrading a network, comprising:
creating a target mapping file corresponding to a memory used by a network object to be upgraded in a first process; the first process is a corresponding process before upgrading;
when the network object to be upgraded is started, a second process is created, and when the first metadata and the second metadata are consistent, the target mapping file is mapped to the second process; the first metadata is metadata generated according to current attribute information of a target mapping area corresponding to the network object to be upgraded in a mapping system before the target mapping file is created, and the second metadata is metadata generated according to the current attribute information of the target mapping area before the second process is created;
and after the network object to be upgraded is upgraded, controlling the first process to exit, and enabling the second process to take over the work of the first process.
2. The network upgrading method according to claim 1, wherein the creating of the target mapping file corresponding to the memory used by the network object to be upgraded in the first process comprises:
and generating a corresponding mapping file according to the specific information of the network object to be upgraded in the memory file system in the first process so as to obtain the target mapping file.
3. The network upgrade method according to claim 2, wherein the memory file system is a tmpfs file system.
4. The network upgrade method according to claim 1, wherein the mapping the target mapping file to the second process comprises:
and mapping the target mapping file to the second process by using mmap.
5. The network upgrade method according to claim 1, wherein the network object to be upgraded comprises a SESSION or an ALG.
6. The network upgrading method according to any one of claims 1 to 5, wherein before creating the target mapping file corresponding to the memory used by the network object to be upgraded in the first process, the method further comprises:
registering the network object to be upgraded to the mapping system to obtain a target mapping area which is positioned in the mapping system and corresponds to the network object to be upgraded;
correspondingly, the creating of the target mapping file corresponding to the memory used by the network object to be upgraded in the first process includes:
and creating the target mapping file corresponding to the memory used by the network object to be upgraded in the first process on the target mapping area.
7. The network upgrade method according to claim 1, further comprising:
before generating the first metadata according to the current attribute information of the target mapping area, storing the current attribute information of the target mapping area into a first mapping area in the target mapping area;
the current attribute information of the target mapping area comprises version information of the network object to be upgraded, and type information and size information of the other mapping areas except the first mapping area in the target mapping area.
8. The network upgrade method according to claim 1, wherein the mapping the target mapping file to the second process comprises:
and calculating a mapping address corresponding to the target mapping region in the process address space of the second process by using a pre-fixed base address in the process address space of the second process, and then mapping the target mapping file on the target mapping region to the second process according to the mapping address.
9. A network upgrade apparatus, comprising:
the file creating module is used for creating a target mapping file corresponding to a memory used by the network object to be upgraded in the first process; the first process is a corresponding process before upgrading;
the file mapping module is used for creating a second process when the upgrading of the network object to be upgraded is started, and mapping the target mapping file to the second process when the first metadata and the second metadata are consistent; the first metadata is metadata generated according to current attribute information of a target mapping area corresponding to the network object to be upgraded in a mapping system before the target mapping file is created, and the second metadata is metadata generated according to the current attribute information of the target mapping area before the second process is created;
and the process control module is used for controlling the first process to quit and enabling the second process to take over the work of the first process after the upgrading of the network object to be upgraded is completed.
10. A network upgrade device, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the network upgrade method as claimed in any one of claims 1 to 8.
11. A computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the network upgrade method of any one of claims 1 to 8.
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| CN106161110A (en) * | 2016-08-31 | 2016-11-23 | 东软集团股份有限公司 | Data processing method in a kind of network equipment and system |
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Denomination of invention: A network upgrade method, device, device, and medium Effective date of registration: 20231212 Granted publication date: 20220429 Pledgee: Shenzhen Branch of China Merchants Bank Co.,Ltd. Pledgor: SANGFOR TECHNOLOGIES Inc. Registration number: Y2023980070863 |