CN110875839B - Network model dynamic expansion method and system, computer readable storage medium - Google Patents
Network model dynamic expansion method and system, computer readable storage medium Download PDFInfo
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- CN110875839B CN110875839B CN201811022383.7A CN201811022383A CN110875839B CN 110875839 B CN110875839 B CN 110875839B CN 201811022383 A CN201811022383 A CN 201811022383A CN 110875839 B CN110875839 B CN 110875839B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5041—Network service management, e.g. ensuring proper service fulfilment according to agreements characterised by the time relationship between creation and deployment of a service
- H04L41/5048—Automatic or semi-automatic definitions, e.g. definition templates
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5041—Network service management, e.g. ensuring proper service fulfilment according to agreements characterised by the time relationship between creation and deployment of a service
- H04L41/5054—Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0893—Assignment of logical groups to network elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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Abstract
The invention discloses a network model dynamic expansion method and system and a computer readable storage medium. The network model dynamic expansion method comprises the following steps: under the condition that the northbound application programming interface carries the extension attribute, the model platform calls an extension template reading interface to read the extension attribute and operation; sending the corresponding service operation call to a service routing layer for processing according to the requirement; the service routing layer distributes the different service operation calls to the specified southbound plug-in. The invention provides a network template, which can realize the dynamic expansion of the network model without modifying the original code.
Description
Technical Field
The invention relates to the field of cloud computing, in particular to a method and a system for dynamically expanding a network model and a computer-readable storage medium.
Background
With the reconstruction and the evolution of the Network, a data center Network (SDN) (Software Defined Network) is forced to introduce SDN schemes of different vendors in a gradual deployment manner, so as to form a multi-resource pool and multi-vendor SDN scenario.
At present, most of SDN systems of mainstream manufacturers are closed Overlay (virtualization technology mode superimposed on a network architecture) SDN schemes with limited openness and poor compatibility, and the problem of manufacturer locking is easily encountered after land deployment.
In order to bear various types of cloud services, the cloud resource pool needs to have different capabilities such as SLA (Service-Level Agreement), disaster recovery, disaster tolerance, fault recovery, and the like, and can support Service deployment across domains, manufacturers, and SDNs.
Disclosure of Invention
The applicant found that: in a commercial and open-source network arranging system in the related technology, a model driving framework is mostly adopted to access an SDN scheme of a different manufacturer, and a unified network model is defined according to self service requirements. However, in such a model-driven framework, the network model loaded thereon only supports attribute extension in a static manner (modifying and adding extension fields on the original model code), which results in the problems that a northbound API (Application Programming Interface) lacks standardization, and a southbound network implementation plug-in senses extension content indiscriminately.
In view of at least one of the above technical problems, the present invention provides a method and a system for dynamically expanding a network model, and a computer-readable storage medium, which provide a network template and can realize dynamic expansion of the network model.
According to an aspect of the present invention, there is provided a network model dynamic expansion method, including:
under the condition that the northbound application programming interface carries the extension attribute, the model platform calls an extension template reading interface to read the extension attribute and operation;
sending the corresponding service operation call to a service routing layer for processing according to the requirement;
the service routing layer distributes the different service operation calls to the specified southbound plug-in.
In some embodiments of the present invention, the method for dynamically extending a network model further comprises:
the northbound application programming interface is set to be dynamically extensible.
In some embodiments of the present invention, the northbound application programming interface may be compatible with the network attribute field and the extended attribute field.
In some embodiments of the present invention, the sending, according to a need, the corresponding service operation call to the service routing layer for processing includes:
under the condition of no extended attribute, the service operation call containing the network attribute is sent to a service routing layer for processing;
and under the condition of having the extended attribute, sending the service operation call containing the network attribute and the extended attribute to a service routing layer for processing.
In some embodiments of the present invention, the method for dynamically extending a network model further comprises:
an extended template is preset, wherein the extended template comprises an extended attribute interface, an extended attribute operation interface and an extended attribute and operation reading interface.
In some embodiments of the present invention, the method for dynamically extending a network model further comprises:
and the preset model platform is used for uniformly managing the network model and preprocessing network calling.
According to another aspect of the present invention, there is provided a network model dynamic extension system, comprising a network service orchestration layer and a model driven framework, wherein:
the model driven framework comprises a dynamically extensible northbound application programming interface, wherein the northbound application programming interface is compatible with the network attribute field and the extended attribute field;
the model driven framework is connected with the network service arrangement layer through the northbound application programming interface.
In some embodiments of the invention, the model driven framework further comprises a model platform, wherein:
and the model platform is used for uniformly managing the network model and preprocessing network calling.
In some embodiments of the invention, the model driven framework further comprises a traffic routing layer and a southbound plug-in, wherein:
the model platform is used for calling the extended template reading interface and reading the extended attribute and operation under the condition that the northbound application programming interface carries the extended attribute; sending the corresponding service operation call to a service routing layer for processing according to the requirement;
and the service routing layer is used for distributing different service operation calls to the specified southbound plug-in.
In some embodiments of the invention, the network model dynamic extension system further comprises an extension template, wherein:
the extended template comprises an extended attribute interface, an extended attribute operation interface and a reading interface for extended attribute and operation.
According to another aspect of the present invention, there is provided a network model dynamic extension system, including:
the model platform is used for calling the extended template reading interface and reading the extended attribute and operation under the condition that the northbound application programming interface carries the extended attribute; sending the corresponding service operation call to a service routing layer for processing according to the requirement;
and the service routing layer is used for distributing different service operation calls to the specified southbound plug-in.
In some embodiments of the present invention, the network model dynamic extension system is configured to perform operations for implementing the network model dynamic extension method according to any of the above embodiments.
According to another aspect of the present invention, there is provided a network model dynamic extension system, including:
a memory to store instructions;
a processor configured to execute the instructions to cause the network model dynamic extension system to perform operations for implementing the network model dynamic extension method according to any of the above embodiments.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions which, when executed by a processor, implement the method for dynamically extending a network model according to any one of the above embodiments.
The invention provides a network template, which can realize the dynamic expansion of the network model without modifying the original code.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a diagram illustrating a network orchestration system according to some embodiments of the present invention.
FIG. 2 is a schematic diagram of some embodiments of a network model dynamic expansion system of the present invention.
Fig. 3 is a schematic diagram of some embodiments of a network model dynamic expansion method according to the present invention.
FIG. 4 is a diagram illustrating a network model dynamic expansion method according to further embodiments of the present invention.
FIG. 5 is a schematic diagram of another embodiment of a network model dynamic expansion system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a diagram illustrating a network orchestration system according to some embodiments of the present invention. As shown in fig. 1, in the related art network orchestration system, a northbound network model defines network attributes and operation interfaces, a southbound vendor plug-in provides network implementation, and an operation routing layer assigns northbound business operations to appropriate southbound implementation.
The applicant found that: the related art network orchestration system shown in fig. 1 has two problems: 1. the attributes and the method of the network model are expanded, and only the original model can be modified and added, so that the northbound API is lack of unification and standard, and further the service calling of the arrangement layer is influenced; 2. southbound plug-ins perceive extension fields even though they do not provide extension implementations themselves.
To solve at least one of the above technical problems, the present invention provides a method and a system for dynamically extending a network model, and a computer-readable storage medium, which are described below with reference to embodiments.
FIG. 2 is a schematic diagram of some embodiments of a network model dynamic expansion system of the present invention. As shown in fig. 2, the network Model dynamic extension system may include a network service orchestration layer 1 and a Model Driven Framework (Model Driven Framework)2, where:
the model driven framework 2 may interface with the network services orchestration layer 1 through the northbound application programming interface 23.
The model driven framework 2 includes a dynamically extensible northbound application programming interface 23, wherein the northbound application programming interface 23 may be compatible with network attribute fields (e.g., NetworkAPI (a, b)) and extended attribute fields (e.g., Extend (c, d …)).
Based on the network model dynamic expansion system provided by the above embodiment of the present invention, the northbound API opened by the model driving framework is set to be dynamically expandable (NetworkAPI (a, b) extended (c, d.)) instead of a static manner (NetworkAPI (a, b, c, d)). Therefore, the northbound API of the embodiment of the invention is compatible with the extension field and maintains the consistency of the interface facing the arrangement layer, thereby solving the technical problems that the northbound API is lack of unification and standard and further the service call of the arrangement layer is influenced because the related technology can only be modified and added on the original model.
In some embodiments of the present invention, as shown in fig. 2, the Model driven framework 2 may further include a Model Platform (Model Platform)21 and a Network Model (Model Network)22, wherein:
and the model platform 21 is used for uniformly managing the network model 22 and preprocessing network calls.
In some embodiments of the present invention, as shown in fig. 2, the model driven framework 2 may further include a traffic routing Layer (Routed Operation Layer)24 and a southbound plug-in 25, where:
the model platform 21 is used for calling an extended template reading interface to read extended attributes and operations under the condition that the northbound application programming interface 23 carries the extended attributes Extend (c, d …); dynamically assembling service Operation call (realized by Attributes _ ADD (c, d) and Operation _ ADD (c, d)); and sending the corresponding service operation call to the service routing layer 24 for processing according to the requirement.
In some embodiments of the present invention, the model platform 21 may specifically be configured to send a service Operation call (Operation (Attributes { a, b }) call) containing a network attribute to the service routing layer 24 for processing without an extended attribute; in the case of the extended attribute, a service Operation call (Operation (Attributes { a, b, c, d. }) call) including the network attribute and the extended attribute is sent to the service routing layer 24 for processing.
The service routing layer 24 is configured to distribute different service operation calls to specified southbound plugins 25 (for example, a vector a Network Provider and a vector B Network Provider in fig. 2).
In some embodiments of the present invention, as shown in fig. 2, the network model dynamic extension system may further include an Extended Template (Extended Template)3, wherein:
the extended template 3 may include an extended Attribute interface (such as Attribute { c, d } in FIG. 2), an extended Attribute Operation interface (Operation (Attribute { c, d })) and a read interface for extended attributes and operations (GetExtendedAttributes (c, d), GetExtendedAttributeOp (c, d)).
Aiming at the technical problems that the prior art can only modify and add on the original model, which causes the lack of unification and standard of northbound API and further influences the service calling of the arrangement layer, the embodiment of the invention provides the network template, which can realize the dynamic expansion of the network model without modifying the original code; the northbound API course compatible extension field of the above embodiment of the present invention maintains the consistency of the interface towards the arrangement layer.
Aiming at the technical problem that the southbound plug-in senses the extension field even though the southbound plug-in does not provide the extension implementation, the southbound plug-in of the above embodiment of the invention can provide the implementation of the extension content according to the requirement.
Fig. 3 is a schematic diagram of some embodiments of a network model dynamic expansion method according to the present invention. Preferably, this embodiment can be performed by the network model dynamic extension system of the present invention. The method comprises the following steps:
In some embodiments of the present invention, step 32 may comprise:
in step 321, in case of no extended attribute, the service operation call containing the network attribute is sent to the service routing layer 24 for processing.
Step 322, in case of extended attribute, sending the service operation call containing network attribute and extended attribute to service routing layer 24 for processing.
The service routing layer 24 distributes the different service operation calls to the designated southbound plug-in 25, step 33.
Based on the network model dynamic expansion method provided by the embodiment of the invention, the network template is provided, the dynamic expansion of the network model can be realized without modifying the original code, and the technical problem that the related technology can only be modified and added on the original model is solved.
FIG. 4 is a diagram illustrating a network model dynamic expansion method according to further embodiments of the present invention. Preferably, this embodiment can be performed by the network model dynamic extension system of the present invention. Steps 44-45 of the fig. 4 embodiment are the same as or similar to steps 31-33, respectively, of the fig. 3 embodiment. The method comprises the following steps:
at step 41, northbound application programming interface 23 is set to be dynamically extensible (NetworkAPI (a, b) extended (c, d …)).
In some embodiments of the present invention, the northbound application programming interface 23 may be compatible with network attribute fields (e.g., NetworkAPI (a, b)) and extended attribute fields (e.g., Extend (c, d …)).
And step 45, sending the corresponding service operation call to the service routing layer 24 for processing according to the requirement.
In some embodiments of the present invention, step 45 may comprise:
in step 451, in the case of no extended attribute, the service Operation call (Operation (Attributes { a, b }) call) containing the network attribute is sent to the service routing layer 24 for processing.
Step 452, in the case of the extended attribute, sending an Operation (Attributes { a, b, c, d. }) call) containing the network attribute and the extended attribute to the service routing layer 24 for processing.
In step 46, the service routing layer 24 distributes different service operation calls to the specified southbound plugin 25 (such as the Vendor a Network Provider and the Vendor B Network Provider in fig. 2).
Aiming at the technical problems that the prior art can only modify and add on the original model, which causes the lack of unification and standard of northbound API and further influences the service calling of the arrangement layer, the embodiment of the invention provides the network template, which can realize the dynamic expansion of the network model without modifying the original code; the northbound API opened by the model driven framework in the above embodiment of the present invention may be set as a dynamic extensible (NetworkAPI (a, b) extended (c, d.)) rather than a static manner (NetworkAPI (a, b, c, d)), so the northbound API of the above embodiment of the present invention is compatible with the extension field, and maintains the consistency of the interface towards the arrangement layer.
Aiming at the technical problem that the southbound plug-in senses the extension field even though the southbound plug-in does not provide the extension implementation, the southbound plug-in of the above embodiment of the invention can provide the implementation of the extension content according to the requirement.
According to another aspect of the present invention, there is provided a network model dynamic extension system, which may include the model platform 21, the service routing layer 24 and the southbound plug-in 25 of the embodiment of fig. 2, wherein:
the model platform 21 is used for calling the extended template 3 reading interface to read the extended attribute and operation under the condition that the northbound application programming interface 23 carries the extended attribute; and sending the corresponding service operation call to the service routing layer 24 for processing according to the requirement.
A service routing layer 24 for distributing different service operation calls to a given southbound plug-in 25.
In some embodiments of the present invention, the network model dynamic extension system is configured to perform operations for implementing the network model dynamic extension method according to any of the embodiments (e.g., the embodiments of fig. 3 or fig. 4) described above.
FIG. 5 is a schematic diagram of another embodiment of a network model dynamic expansion system of the present invention. As shown in fig. 5, the network model dynamic expansion system may include a memory 51 and a processor 52, wherein:
a memory 51 for storing instructions.
A processor 52, configured to execute the instructions, so that the network model dynamic extension system performs operations of implementing the network model dynamic extension method according to any one of the above embodiments (for example, the embodiments in fig. 3 or fig. 4).
Based on the network model dynamic expansion system provided by the embodiment of the invention, the network template is provided, the dynamic expansion of the network model can be realized without modifying the original code, and the technical problem that the related technology can only be modified and added on the original model is solved.
According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions which, when executed by a processor, implement the method for dynamically extending a network model according to any one of the above embodiments.
Based on the computer readable storage medium provided by the above embodiment of the present invention, a network template is provided, which can realize dynamic expansion of a network model without modifying an original code, thereby solving the technical problem that the related art can only modify and add on the original model.
The above embodiment of the present invention may set the northbound API opened by the model driver framework to be dynamically extensible, rather than static, so that the northbound API of the above embodiment of the present invention is compatible with the extension field, and maintains the consistency of the interface towards the arrangement layer.
Aiming at the technical problem that the southbound plug-in senses the extension field even though the southbound plug-in does not provide the extension implementation, the southbound plug-in of the above embodiment of the invention can provide the implementation of the extension content according to the requirement.
The network model dynamic extension system described above may be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof, for performing the functions described herein.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (12)
1. A method for dynamically extending a network model, comprising:
under the condition that a northbound application programming interface used for being connected with a network service arrangement layer carries an extended attribute, a model platform calls an extended template reading interface to read the extended attribute and service operation, wherein the northbound application programming interface can be compatible with a network attribute field and an extended attribute field which does not belong to the network attribute field, and the extended attribute is carried in the extended attribute field;
sending the corresponding service operation call to a service routing layer for processing according to the requirement, wherein the process comprises the following steps: under the condition of having the extended attribute, the service operation call containing the network attribute and the extended attribute is sent to a service routing layer for processing;
the service routing layer distributes the different service operation calls to the specified southbound plug-in.
2. The method of claim 1, further comprising:
the northbound application programming interface is set to be dynamically extensible.
3. The method for dynamically extending network model according to claim 1 or 2, wherein the sending the corresponding service operation call to the service routing layer process according to the requirement further comprises:
and under the condition of no extended attribute, sending the service operation call containing the network attribute to a service routing layer for processing.
4. The method for dynamically extending a network model according to claim 1 or 2, further comprising:
an extended template is preset, wherein the extended template comprises an extended attribute interface, an extended attribute operation interface and an extended attribute and operation reading interface.
5. The method for dynamically extending a network model according to claim 1 or 2, further comprising:
and the preset model platform is used for uniformly managing the network model and preprocessing network calling.
6. A network model dynamic extension system is characterized by comprising a network service arrangement layer and a model driving framework, wherein:
the model driven framework includes:
a dynamically extensible northbound application programming interface, wherein the northbound application programming interface is compatible with the network attribute field and an extended attribute field that does not belong to the network attribute field;
the model platform is used for calling an extended template reading interface and reading extended attributes and business operation under the condition that a northbound application programming interface carries the extended attributes, wherein the extended attributes are carried in the extended attribute field; sending the corresponding service operation call to a service routing layer for processing according to the requirement, wherein the process comprises the following steps: under the condition of having the extended attribute, the service operation call containing the network attribute and the extended attribute is sent to a service routing layer for processing;
the service routing layer is used for calling and distributing different service operations to the specified southbound plug-in; and
a southbound plug-in; and is
The model driven framework is connected with the network service arrangement layer through the northbound application programming interface.
7. The system for dynamically extending network models according to claim 6, wherein the model platform is used for uniformly managing the network models and preprocessing network calls.
8. The network model dynamic extension system of claim 6, further comprising an extension template, wherein:
the extended template comprises an extended attribute interface, an extended attribute operation interface and a reading interface for extended attribute and operation.
9. A system for dynamically extending a network model, comprising:
the model platform is used for calling an extended template reading interface and reading extended attributes and service operation under the condition that a northbound application programming interface used for being connected with the network service arrangement layer carries the extended attributes, wherein the northbound application programming interface can be compatible with network attribute fields and extended attribute fields which do not belong to the network attribute fields, and the extended attributes are carried in the extended attribute fields; sending the corresponding service operation call to a service routing layer for processing according to the requirement, wherein the process comprises the following steps: under the condition of having the extended attribute, the service operation call containing the network attribute and the extended attribute is sent to a service routing layer for processing;
and the service routing layer is used for distributing different service operation calls to the specified southbound plug-in.
10. The network model dynamic extension system of claim 9, wherein the network model dynamic extension system is configured to perform operations to implement the network model dynamic extension method of any one of claims 2-5.
11. A system for dynamically extending a network model, comprising:
a memory to store instructions;
a processor configured to execute the instructions to cause the network model dynamic extension system to perform operations to implement the network model dynamic extension method of any one of claims 1-5.
12. A computer-readable storage medium storing computer instructions which, when executed by a processor, implement the method for dynamic extension of a network model according to any one of claims 1-5.
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