CN112887344A - Link determination method and device based on ONOS controller cluster - Google Patents
Link determination method and device based on ONOS controller cluster Download PDFInfo
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- CN112887344A CN112887344A CN201911195963.0A CN201911195963A CN112887344A CN 112887344 A CN112887344 A CN 112887344A CN 201911195963 A CN201911195963 A CN 201911195963A CN 112887344 A CN112887344 A CN 112887344A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
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Abstract
The invention provides a link determining method and a device based on an ONOS controller cluster, wherein the method comprises the following steps: when receiving a first communication request, determining a target ONOS controller, and establishing a first link between a proxy layer and the target ONOS controller; the first link is used for communication according to a first preset time length; the first communication request includes a first destination address and a first source address; establishing a second link between the target ONOS controller and the target device according to the first destination address; the second link is used for communication according to a second preset time length; and if the destination address of the second communication request is consistent with the first destination address and the source address of the second communication request is consistent with the first source address, taking the first link and the second link as the link of the second communication request according to the target ONOS controller. The invention reduces the resource waste caused by repeatedly establishing short connection and improves the configuration and opening efficiency.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a link determination method and device based on an ONOS controller cluster.
Background
The ONOS distributed controller supports that a northbound API (Application Programming Interface) Interface is provided for the outside, a southbound abstraction layer supporting device/protocol plug-in is provided for the inside, and OpenFlow devices and traditional devices can be controlled. Multiple instances within the ONOS cluster provide API northbound interface services to the outside through the proxy layer. The third party loads the instances randomly through the proxy layer, and the instance establishes a short connection with the device through a Transmission Control Protocol (TCP) to communicate, and then calls and issues services. The existing method has the condition that a certain party calls loads to different instances for multiple times, and when the loads reach different instances, new short connections are established every time, so that the configuration and opening efficiency are influenced.
Disclosure of Invention
The invention provides a link determining method and device based on an ONOS controller cluster, which can relieve resource waste caused by repeated establishment of short connection and improve configuration and opening efficiency.
In a first aspect, an embodiment of the present invention provides a method for determining a link based on an ONOS controller cluster, where the method includes: when receiving a first communication request, determining a target ONOS controller, and establishing a first link between a proxy layer and the target ONOS controller; the first link is used for communication according to a first preset time length; the first communication request comprises a first destination address and a first source address; establishing a second link between the target ONOS controller and a target device according to the first destination address; the second link is used for communication according to a second preset time length; and if the destination address of the second communication request is consistent with the first destination address and the source address of the second communication request is consistent with the first source address, taking the first link and the second link as the links of the second communication request according to the target ONOS controller.
In a second aspect, an embodiment of the present invention further provides an apparatus for determining a link based on an ONOS controller cluster, where the apparatus includes: the first link module is used for determining a target ONOS controller when receiving a first communication request and establishing a first link between a proxy layer and the target ONOS controller; the first link is used for communication according to a first preset time length; the first communication request comprises a first destination address and a first source address; a second link module for establishing a second link between the target ONOS controller and a destination device according to the first destination address; the second link is used for communication according to a second preset time length; a determining module, configured to, if a destination address of a second communication request is consistent with the first destination address and a source address of the second communication request is consistent with the first source address, use the first link and the second link as links of the second communication request according to the target ONOS controller.
In a third aspect, an embodiment of the present invention further provides a computer device, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor, when executing the computer program, implements the above link determination method based on an ONOS controller cluster.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable medium having a non-volatile program code executable by a processor, where the program code causes the processor to execute the above-mentioned link determination method based on an ONOS controller cluster.
The embodiment of the invention has the following beneficial effects: the embodiment of the invention provides a link determining scheme based on an ONOS controller cluster, which is characterized in that a target ONOS controller is determined each time a first communication request is received, a first link between a proxy layer and the target ONOS controller is established, the first communication request comprises a first destination address and a first source address, and a second link between the target ONOS controller and a target device is established according to the first destination address; then, if the destination address of the subsequently received second communication request is consistent with the first destination address, and the source address of the second communication request is consistent with the first source address, since the first link may be used for communication according to a first preset time duration, and the second link may be used for communication according to a second preset time duration, within a certain time duration, the established first link and the established second link may be multiplexed for data transmission, and the first link and the second link are used as the link of the second communication request according to the identification data and the address data of the target ONOS controller. In the embodiment of the invention, the first link and the second link which can communicate according to a certain time length are established, and the established first link and the established second link can be multiplexed when the same request is received for a plurality of times within the certain time length, so that the load is prevented from being called to different ONOS controller instances by a certain party for a plurality of times, the resource waste caused by repeatedly establishing short connection is reduced, and the configuration and opening efficiency is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a link determination method based on an ONOS controller cluster according to an embodiment of the present invention;
fig. 2 is a schematic structural framework diagram for executing the link determination method based on the ONOS controller cluster according to the embodiment of the present invention;
fig. 3 is a block diagram of a link determination apparatus based on an ONOS controller cluster according to an embodiment of the present invention;
fig. 4 is a block diagram of another link determination apparatus based on an ONOS controller cluster according to an embodiment of the present invention;
fig. 5 is a block diagram of a computer device according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
Currently, when a certain party in an ONOS distributed controller cluster repeatedly accesses, different ONOS controller instances are loaded randomly, and the different instances communicate by establishing a short connection with a device. Since the device can only establish one long connection. However, when the load is loaded to different instances, a new short connection is established every time, which affects the configuration and the opening efficiency. Under the requirements of 5G networking requiring speed, leveling network difference and reducing network connection complexity, a long connection with overtime is established, the opening and configuration issuing efficiency is improved, and the method is opened, and is a technical requirement for telecommunication service opening in the 5G era.
Based on this, the link determination method and apparatus based on the ONOS controller cluster provided by the embodiments of the present invention can solve the problem that a certain party repeatedly accesses different instances, and solve the problem that resources are wasted due to short connections between the instances and devices.
To facilitate understanding of the present embodiment, a detailed description is first given of a link determination method based on an ONOS controller cluster disclosed in the present embodiment.
An embodiment of the present invention provides a link determination method based on an ONOS controller cluster, which is shown in fig. 1 and includes the following steps:
step S102, when receiving the first communication request, determining a target ONOS controller, and establishing a first link between a proxy layer and the target ONOS controller; the first link is used for communication according to a first preset time length.
In the embodiment of the present invention, a user may call an API (Application Programming Interface) northbound Interface provided by the ONOS controller cluster to the outside, so as to send a communication request to a system where the ONOS controller cluster is located. For a certain communication request, if there is no communication request identical to the certain communication request within the first certain time period, the certain communication request may be regarded as a first communication request. If the destination address and the source address of a certain communication request are identical to those of another communication request, the two communication requests are considered to be identical communication requests. The first communication request includes a first destination address and a first source address, wherein the first destination address is an address for determining a recipient of the first communication request, and the first source address is an address for determining an originator of the first communication request.
The ONOS controller cluster comprises a plurality of ONOS controllers, and one ONOS controller instance can be randomly selected as a target controller. The process of establishing the first link between the proxy layer and the target ONOS controller is a process of establishing a long connection with timeout. It should be noted that the first link may be continuously used for communication for a first preset time period until the first preset time period is over, and then stops being used for communication. The first preset time period may be selected according to actual requirements, which is not specifically limited in the embodiment of the present invention.
It should be noted that, in the embodiment of the present invention, the identification data of the target ONOS controller is used to identify the target ONOS controller, and the address data of the target ONOS controller is used to determine the communication address of the target ONOS controller. The target ONOS controller is determined, i.e. the identification data of the target ONOS controller and the address data of the target ONOS controller are determined, after which the identification data of the target ONOS controller and the address data, the first destination address and the first source address of the target ONOS controller are recorded in a database.
Step S104, establishing a second link between the target ONOS controller and the target equipment according to the first destination address; the second link is used for communication according to a second preset time length.
In an embodiment of the invention, after determining the target ONOS controller, a second link between the target ONOS controller and the destination device may be established according to the first destination address. The process of establishing the second link is a process of establishing a long connection with a timeout. The second link may continue to be used for communication for a second predetermined duration until the second predetermined duration expires, and cease to be used for communication. The second preset time period may be selected according to actual requirements, which is not specifically limited in the embodiment of the present invention.
It should be noted that the second preset time period may be the same as or different from the first preset time period, and may be set according to specific needs.
And step S106, if the destination address of the second communication request is consistent with the first destination address and the source address of the second communication request is consistent with the first source address, taking the first link and the second link as the links of the second communication request according to the target ONOS controller.
In the embodiment of the present invention, in the process of sequentially receiving communication requests, a query is performed on a first destination address and a first source address recorded in a database, and if a second communication request is identical to the first communication request, that is, a destination address of the second communication request is identical to the first destination address, and a source address of the second communication request is identical to the first source address, according to identification data of a target ONOS controller and address data of the target ONOS controller, the target ONOS controller may be accessed, that is, a first link is multiplexed, and then the target ONOS controller may multiplex a second link, thereby implementing communication of the second communication request.
The embodiment of the invention actively queries the database when passing through the agent layer during multiple communication requests, and if the communication request is consistent with the first communication request, the first link and the second link can be multiplexed within a certain time.
The embodiment of the invention provides a link determining scheme based on an ONOS controller cluster, which is characterized in that a target ONOS controller is determined each time a first communication request is received, a first link between a proxy layer and the target ONOS controller is established, the first communication request comprises a first destination address and a first source address, and a second link between the target ONOS controller and a target device is established according to the first destination address; then, if the destination address of the subsequently received second communication request is consistent with the first destination address, and the source address of the second communication request is consistent with the first source address, since the first link may be used for communication according to a first preset time duration, and the second link may be used for communication according to a second preset time duration, within a certain time duration, the established first link and the established second link may be multiplexed for data transmission, and the first link and the second link are taken as the link of the second communication request according to the identification data and the address data of the target ONOS controller. In the embodiment of the invention, the first link and the second link which can communicate according to a certain time length are established, and the established first link and the established second link can be multiplexed when the same request is received for a plurality of times within the certain time length, so that the load is prevented from being called to different ONOS controller instances by a certain party for a plurality of times, the resource waste caused by repeatedly establishing short connection is reduced, and the configuration and opening efficiency is improved.
Considering the step of establishing a first link between the proxy layer and the target ONOS controller for ease of management and maintenance, the following steps may be performed:
establishing a long connection agent layer; a first link between the long connection proxy layer and the target ONOS controller is established.
In embodiments of the present invention, the long connection broker layer may be dedicated to establishing long connections with timeouts. The proxy layer in an ONOS distributed controller cluster, which is usually the default for establishing short connections, needs to add an identity in the conventional proxy layer when establishing a long connection link, e.g. when establishing a first link, to enable the proxy layer to be used for establishing long connections. In the embodiment of the invention, a long connection agent layer can be established and is specially used for establishing long connection, thereby facilitating management and maintenance.
In view of improving data processing efficiency, the method may further perform the following steps:
the identification data of the target ONOS controller and the address data, the first destination address and the first source address of the target ONOS controller are recorded using a Redis database.
In the embodiment of the invention, the Redis database is used for recording the identification data of the target ONOS controller, the address data of the target ONOS controller, the first destination address and the first source address, so that the data processing pressure of the memory server can be relieved, and the data processing efficiency can be improved.
In order to ensure the continuous communication, the method can further execute the following steps:
and after the first preset time length is overtime, re-determining the target ONOS controller.
In the embodiment of the present invention, after the long connection of the first link is timed out, the target ONOS controller may be determined again, and the target ONOS controller reestablishes the long connection with the device, that is, reestablishes the second link.
In order to ensure the continuous communication, the method can further execute the following steps:
and after the second preset duration is overtime, reestablishing a second link between the target ONOS controller and the first destination address.
In the embodiment of the present invention, if the second preset duration is overtime, that is, the long connection of the second link is overtime, the second link between the target ONOS controller and the first destination address is reestablished, that is, when the northbound interface requests the ONOS controller instance, the ONOS controller instance reestablishes the long connection with the target device.
The method for determining links based on the ONOS controller cluster is described in a specific embodiment.
(1) And calling an API northbound interface provided by the outside by the user.
(2) The northbound interface accesses the ONOS instances through the new proxy layer, randomly loading each instance.
(3) And the new agent layer records information such as an access request address, an IP address and the like, stores the information into the Redis, sets timeout time, and takes the request address, namely the source address, as a Key.
(4) After receiving the request, the ONOS instance establishes a long connection with the corresponding equipment with overtime.
(5) After the long connection is established, operations such as issuing configuration and opening service are carried out, and meanwhile, the instance ID and the IP address of the target equipment are stored into Redis as values.
(6) And actively inquiring a Redis database when the request passes through the proxy layer for multiple times, inquiring a target address path according to a request source address Key, and mapping the proxy layer into the instance.
(7) After the long connection is overtime, the long connection is reestablished between the instance and the equipment when the northbound interface requests the instance. If the new agent layer times out, a new link is established after reloading to the new instance.
The invention provides a link determining method and a device based on an ONOS (on-line operating System) controller cluster, and the method can improve the issuing and opening efficiency of the configuration of a northbound interface, solve the problem that a certain party repeatedly accesses different instances, solve the problem that the short connection between the instances and equipment for many times wastes resources and time, and be used for improving the configuration and opening efficiency of 5G equipment magnitude, by establishing long connection among an agent layer, a plurality of instances of the ONOS controller and the equipment, referring to a schematic diagram of a structural framework used for executing the link determining method based on the ONOS controller cluster shown in FIG. 2.
An embodiment of the present invention further provides a link determining apparatus based on an ONOS controller cluster, referring to a block diagram of a structure of the link determining apparatus based on the ONOS controller cluster shown in fig. 3, where the apparatus includes:
a first link module 71, configured to determine a target ONOS controller when receiving the first communication request, and establish a first link between the proxy layer and the target ONOS controller; the first link is used for communication according to a first preset time length; the first communication request includes a first destination address and a first source address; a second link module 72 for establishing a second link between the target ONOS controller and the destination device according to the first destination address; the second link is used for communication according to a second preset time length; the determining module 73 is configured to, if the destination address of the second communication request is consistent with the first destination address and the source address of the second communication request is consistent with the first source address, use the first link and the second link as the link of the second communication request according to the target ONOS controller.
In one embodiment, the first link module is specifically configured to: establishing a long connection agent layer; a first link between the long connection proxy layer and the target ONOS controller is established.
In an embodiment, referring to a block diagram of another link determining apparatus based on an ONOS controller cluster shown in fig. 4, the apparatus further includes a recording module 74 for: the identification data of the target ONOS controller and the address data, the first destination address and the first source address of the target ONOS controller are recorded using a Redis database.
In one embodiment, the apparatus further includes a first reconstruction module, specifically configured to: and after the first preset time length is overtime, re-determining the target ONOS controller.
In an embodiment, the apparatus further includes a second reconstruction module, specifically configured to: and after the second preset duration is overtime, reestablishing a second link between the target ONOS controller and the first destination address.
The embodiment of the present invention further provides a computer device, referring to the schematic block diagram of the structure of the computer device shown in fig. 5, the computer device includes a memory 81 and a processor 82, the memory stores a computer program that can be executed on the processor, and the processor implements the steps of any one of the methods when executing the computer program.
It is clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the computer device described above may refer to the corresponding process in the foregoing method embodiments, and no further description is provided herein
Embodiments of the present invention also provide a computer readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform any of the steps of the above-described method.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A link determination method based on an ONOS controller cluster is characterized by comprising the following steps:
when receiving a first communication request, determining a target ONOS controller, and establishing a first link between a proxy layer and the target ONOS controller; the first link is used for communication according to a first preset time length; the first communication request comprises a first destination address and a first source address;
establishing a second link between the target ONOS controller and a target device according to the first destination address; the second link is used for communication according to a second preset time length;
and if the destination address of the second communication request is consistent with the first destination address and the source address of the second communication request is consistent with the first source address, taking the first link and the second link as the links of the second communication request according to the target ONOS controller.
2. The method of claim 1, wherein establishing the first link between the proxy layer and the target ONOS controller comprises:
establishing a long connection agent layer;
establishing a first link between the long connection proxy layer and the target ONOS controller.
3. The method of claim 1, further comprising:
recording the identification data of the target ONOS controller and the address data, the first destination address and the first source address of the target ONOS controller by using a Redis database.
4. The method of claim 1, further comprising:
and after the first preset time length is overtime, re-determining the target ONOS controller.
5. The method of claim 1, further comprising:
and after the second preset duration is overtime, reestablishing a second link between the target ONOS controller and the first destination address.
6. An apparatus for link determination based on a cluster of ONOS controllers, comprising:
the first link module is used for determining a target ONOS controller when receiving a first communication request and establishing a first link between a proxy layer and the target ONOS controller; the first link is used for communication according to a first preset time length; the first communication request comprises a first destination address and a first source address;
a second link module for establishing a second link between the target ONOS controller and a destination device according to the first destination address; the second link is used for communication according to a second preset time length;
a determining module, configured to, if a destination address of a second communication request is consistent with the first destination address and a source address of the second communication request is consistent with the first source address, use the first link and the second link as links of the second communication request according to the target ONOS controller.
7. The apparatus of claim 6, further comprising a logging module to:
recording the identification data of the target ONOS controller and the address data, the first destination address and the first source address of the target ONOS controller by using a Redis database.
8. The apparatus of claim 6, further comprising a first reconstruction module to:
and after the first preset time length is overtime, re-determining the target ONOS controller.
9. Computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method according to any of the claims 1 to 5 when executing the computer program.
10. A computer-readable medium having non-volatile program code executable by a processor, the program code causing the processor to perform the method of any of the preceding claims 1 to 5.
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| CN101990256A (en) * | 2010-08-27 | 2011-03-23 | 中兴通讯股份有限公司 | Long-connection management device and method for managing link resources of long-connection communication |
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| US20190034084A1 (en) * | 2017-07-28 | 2019-01-31 | Hewlett Packard Enterprise Development Lp | Selecting controllers based on affinity between access devices and storage segments |
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| CN101990256A (en) * | 2010-08-27 | 2011-03-23 | 中兴通讯股份有限公司 | Long-connection management device and method for managing link resources of long-connection communication |
| CN103780679A (en) * | 2014-01-03 | 2014-05-07 | 电子科技大学 | Long time delay remote invocation method based on HTTP protocol |
| CN104009938A (en) * | 2014-06-17 | 2014-08-27 | 合一网络技术(北京)有限公司 | Method and system for long connections based on router level |
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| US20190034084A1 (en) * | 2017-07-28 | 2019-01-31 | Hewlett Packard Enterprise Development Lp | Selecting controllers based on affinity between access devices and storage segments |
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