JP6760899B2 - Network service management device, network service management method, and network service management program - Google Patents

Description

The present invention relates to a network service management device, a network service management method, and a network service management program. The network service management device may also be referred to as a network service management system (NMS).

The NMS is a device that manages services on the network and manages network devices. The NMS activates the managed service by inputting predetermined setting information to the managed network device. In addition, NMS monitors the soundness of services by accessing managed services and network devices and collecting information.

Some of the prior arts of NMS are disclosed in Non-Patent Documents 1 and 2. In Non-Patent Document 1, regarding NMS, in preparation for an access failure to a management target due to a timeout or the like, a server having an access function is duplicated by a 0/1 system (0 system: active system, 1 system: standby system), etc. A technique for forming a multiple configuration is disclosed. According to Non-Patent Document 1, a method of operating only one system and switching to another system in the event of a failure (single system access method) and a method of constantly operating both systems (both system access method) are used properly (No. 1). 1 access form).

Further, Non-Patent Document 2 also discloses a technique in which a server having an access function has a multiple configuration such as a 0/1 system duplication. According to Non-Patent Document 2, when the management target side has low resistance to the load increase due to access, only access from a single system is permitted due to the management protocol and business specifications, and multiple systems (dual). In this case, in consideration of the case where simultaneous access from both systems is not allowed, access to the management target by the server (single system access method) is limited to either 0 system or 1 system (second access form). ..

"Infrastructure Engineer Textbook Network Construction Technology Explanation (Software Design Separate Volume)", First Edition, First Printing, Gijutsu-Hyoron Co., Ltd., January 5, 2015, p211-229 Hiroaki Sakata, Masashi Shimizu, Saburo Seto “Examination of Router Control Task Processing Method to Guarantee Maximum Wait Time” IEICE Technical Report, Vol.108 No.396, January 15, 2009, p7-12

When a business operator that provides a predetermined service owns a network device to be managed, the NMS accesses the network device by Simple Network Management Control (SNMP) to inquire about information or network. Inquire information from the controller that controls the device.

On the other hand, if the business operator does not own the network equipment and borrows the network of another company (an example of a person other than the business operator), the NMS is one or more published by the other company. Access the API (Application Programmable Interface) to set the services provided by the borrowed network and inquire about information.

Here, regarding access to the API for inquiring information, there are cases where a cost is incurred each time an inquiry is made, and there are cases where an upper limit on the number of inquiries per predetermined time is set. Due to these cases, access to the API by the NMS is subject to certain restrictions. Non-Patent Documents 1 and 2 do not describe or suggest such restrictions and countermeasures. As a result, when the dual access method of the first access form according to Non-Patent Document 1 is applied, the number of access for information inquiries increases, the cost rises, and the upper limit of the number of accesses per predetermined time is set. There is a disadvantage that it exceeds the limit and subsequent inquiries cannot be made. In addition, when the one-system access method of the first and second access forms according to Non-Patent Documents 1 and 2 is applied, a network failure to the API has occurred from each system (particularly the working system), and the management target. There is an inconvenience that the probability that the access to the API by the NMS fails increases due to the fact that there was no response from the side by chance.

In view of such a background, it is an object of the present invention to improve the accuracy of access and suppress the number of accesses and the cost in accessing the API by the network service management device.

In order to solve the above-mentioned problems, the invention according to claim 1 is a network service management device that accesses one or a plurality of APIs (Application Programmable Interfaces) published on a network, and the network service management device. Exists in a plurality of systems, and has a multiple configuration including an active system and a standby system, and has an API restriction information input unit that accepts input of API restriction information indicating restrictions on access to the API from the network service management device, and the API. based on the restriction information, e Bei from one form to access among the plurality of network service management device, or an access mode selection unit that selects a mode of access from all of the plurality of network service management apparatus, a The API restriction information includes an upper limit of the number of accesses from the network service management device within a predetermined period, and the network service management device indicates an access interval when the network service management device accesses the API. An API access frequency information input unit that accepts input of frequency information is further provided, and the access form selection unit obtains the number of accesses per unit time of the network service management device from the frequency information, and all of the network service management devices. When the number of accesses exceeds the upper limit of the number of accesses due to the access from, the mode of accessing from one of the plurality of the network service management devices is selected, and the API restriction information is the network service management device. Including the cost of one access to the API from the network service management device, the network service management device indicates a cost upper limit that is allowed within a predetermined period for the cost of accessing the API from the network service management device. The user access cost upper limit information input unit that accepts the input of information is further provided, and the access form selection unit sets the cost upper limit as the cost calculated from the number of accesses by the access from all of the network service management devices. When the amount is exceeded, the form of access is selected from one of the plurality of network service management devices .

Further, the invention according to claim 2 is a network service management method in a network service management device that accesses one or a plurality of APIs published on a network, and there are a plurality of the network service management devices in use. The network service management device has a multiplex configuration including a system and a standby system, and the network service management device has a first step of accepting input of API restriction information indicating restrictions on access to the API from the network service management device, and the API restriction. Based on the information, the second step of selecting a form of accessing from one of the plurality of network service management devices or a form of accessing from all of the plurality of network service management devices is executed, and the API is executed. The restriction information includes an upper limit of the number of accesses from the network service management device within a predetermined period, and the network service management device indicates frequency information indicating an access interval when the network service management device accesses the API. The third step of accepting the input of is further executed, and in the second step, the number of accesses per unit time of the network service management device is obtained from the frequency information, and the access from all of the network service management devices is performed. When the number of accesses exceeds the upper limit of the number of accesses, a mode of accessing from one of the plurality of network service management devices is selected, and the API restriction information is transmitted from the network service management device to the API. The network service management device accepts input of cost upper limit information indicating an allowable cost upper limit within a predetermined period for the cost of accessing the API from the network service management device, including the cost for one access. The fourth step is further executed, and in the second step, when the cost calculated from the number of accesses by the access from all of the network service management devices exceeds the cost upper limit, the plurality of the network services It is characterized in that the form of access is selected from one of the management devices .

Further, according to the third aspect of the present invention, there are a plurality of network service management devices that access one or a plurality of APIs published on the network, and the network service management having a multiple configuration including an active system and a standby system. A computer as a device is an API restriction information input means that accepts input of API restriction information indicating restrictions on access to the API from the network service management device, and a plurality of network service management devices based on the API restriction information. It functions as an access form selection means for selecting a form of accessing from one of them or a form of accessing from all of the plurality of network service management devices, and the API restriction information is used in the network service management device within a predetermined period. Further functioning of the computer as an API access frequency information input means that accepts input of frequency information indicating an access interval when the network service management device accesses the API, including an upper limit of the number of accesses from the computer. The access form selection means obtains the number of accesses per unit time of the network service management device from the frequency information, and the number of accesses exceeds the upper limit of the number of accesses due to access from all of the network service management devices. In this case, a mode of accessing from one of the plurality of network service management devices is selected, and the API restriction information includes a cost for one access from the network service management device to the API, and the computer. Further functions as a user access cost upper limit information input means that accepts input of cost upper limit information indicating an allowable cost upper limit within a predetermined period for the cost of accessing the API from the network service management device. When the cost calculated from the number of accesses by access from all of the network service management devices exceeds the cost upper limit, the form selection means accesses from one of the plurality of network service management devices. to select a, a Netw network service management program.

By doing so, since access from all of the plurality of network service management devices is permitted within a range that satisfies the restriction on access to the API, it is possible to guarantee the accuracy of access of a predetermined level or higher. On the other hand, it allows access from one of a plurality of network service management devices to ensure that the restrictions on access to the API are met.
Therefore, in accessing the API by the network service management device, it is possible to achieve both improvement of access accuracy and reduction of the number of accesses and cost.
In addition, by doing so, if an upper limit on the number of accesses is set as a restriction on access to the API, access from all of a plurality of network service management devices so as not to exceed the upper limit on the number of accesses. Can be tolerated.
In addition, by doing so, the access cost is set as a restriction on access to the API, and if the network service management device prepares the cost upper limit, a plurality of costs will not be exceeded so as not to exceed the cost upper limit. Access from all network service management devices can be allowed.

According to the present invention, in accessing the API by the network service management device, it is possible to achieve both improvement of access accuracy and reduction of the number of accesses and cost.

It is a functional block diagram of the network service management apparatus of this embodiment. It is a flowchart which shows the access form selection process.

Hereinafter, embodiments for carrying out the present invention (hereinafter, referred to as “the present embodiment”) will be described with reference to the drawings.

≪Composition≫
The network service management device (NMS) of the present embodiment is a device that manages services provided by a business operator on a network and network devices arranged in the network as management targets. As shown in FIG. 1, the NMS 100 includes an API cost / access count limit information input unit 10 (API limit information input unit: API limit information input means), an API access frequency information input unit 20, and a user access cost upper limit information input. Unit 30, API cost / access count limit information storage unit 11, API access frequency information storage unit 21, user access cost upper limit information storage unit 31, access form selection unit 40 (access form selection means), and access form. The information storage unit 41, the device / API access unit (0 system) 50, the device / API access unit (1 system) 60, and the collected information storage units 51 and 61 are provided.

Reference numeral 200 in FIG. 1 is a device such as a network device accessed by the NMS 100, or one or a plurality of APIs disclosed by other companies. The NMS100 of the present embodiment has a dual configuration with a 0/1 system (0 system: active system, 1 system: standby system).

The API cost / access count limit information input unit 10 inputs the cost for one inquiry of information set in the API accessed by the NMS100, and sets the upper limit of the number of accesses for inquiries within a predetermined period. Accepts input as restriction information. The API restriction information indicates restrictions regarding access from the NMS 100 to the API. For APIs for which the cost for inquiring information is not set, the input cost is set to 0 for convenience. Further, for APIs for which the upper limit of the number of inquiries accessed within a predetermined period is not set, the upper limit of input is unlimited for convenience.

The API access frequency information input unit 20 accepts input as frequency information of the access interval when the NMS 100 accesses the API.

The user access cost upper limit information input unit 30 accepts input of the cost incurred when the NMS 100 accesses the API, with the cost upper limit allowed by the user (operator) of the NMS 100 within a predetermined period as the cost upper limit information.

The input by the API cost / access frequency limit information input unit 10, the API access frequency information input unit 20, and the user access cost upper limit information input unit 30 is performed by the user (operator) of the NMS 100. Further, the input by the API cost / access frequency limit information input unit 10, the API access frequency information input unit 20, and the user access cost upper limit information input unit 30 may be input on the screen, or a standard text document (example: Input may be performed by REST (REpresentational State Transfer) or XML (ExtensibleMarkupLanguage).

Various information input by the API cost / access frequency limit information input unit 10, the API access frequency information input unit 20, and the user access cost upper limit information input unit 30 can be set for each API, but all of them to be managed. It can also be set in API units. For example, the upper limit of the number of accesses may be set for each API, or the upper limit of the total number of accesses for all APIs may be set.

The API cost / access count limit information storage unit 11 stores the API limit information input by the API cost / access count limit information input unit 10.
The API access frequency information storage unit 21 stores the frequency information input by the API access frequency information input unit 20.
The user access cost upper limit information storage unit 31 stores the cost upper limit information input by the user access cost upper limit information input unit 30.

The access form selection unit 40 is an access target based on various information input from the API cost / access count limit information input unit 10, the API access frequency information input unit 20, and the user access cost upper limit information input unit 30. Select the access mode to the device / API (200). The access form selection unit 40 obtains the number of accesses per unit time by using the access interval of the frequency information. When the number of accesses per unit time exceeds the upper limit of the number of access of API restriction information due to access from both systems (0 system and 1 system), the access form selection unit 40 is a single system (0 system or 1 system). Select the form of access from (1st system) (first condition). Further, when the cost calculated from the number of accesses per unit time exceeds the cost upper limit of the cost upper limit information due to the access from both systems (0 system and 1 system), the access form selection unit 40 is one-sided. Select the form of access from the system (second condition).

When at least one of the first and second conditions is satisfied, the access form selection unit 40 selects access from one system (selects a form to access from one of the NMS 100). When neither of the first and second conditions is satisfied, the access form selection unit 40 selects access from both systems (selects a form to access from all of the NMS 100). The contents of the first and second conditions described above are examples, and other parameters and calculation methods can be used.

When the NMS 100 functions as the 0 series, the device / API access unit 50 accesses the network device to be managed and one or a plurality of publicly available APIs. The access by the device / API access unit 50 is performed at a normal time without any failure, for example. When the device / API access unit 50 accesses the device / API (200) to be accessed for inquiries, the device / API access unit 50 acquires information from the device / API (200) to be accessed.
The collection information storage unit 51 stores the information collected from the device / API (200) to be accessed by the device / API access unit 50.

When the NMS 100 functions as one system, the device / API access unit 60 accesses the network device to be managed and one or a plurality of publicly available APIs. Access by the device / API access unit 60 is performed, for example, in the event of a failure. When the device / API access unit 60 makes an inquiry access to the device / API (200) to be accessed, the device / API access unit 60 acquires information from the device / API (200) to be accessed.
The collection information storage unit 61 stores the information collected by the device / API access unit 60 from the device / API (200) to be accessed.

≪Processing≫
Next, the access form selection process executed by the NMS 100 will be described. It is assumed that the NMS 100 has a dual configuration based on a 0/1 system.
First, the NMS 100 inputs API limit information, frequency information, and cost upper limit information by the API cost / access count limit information input unit 10, the API access frequency information input unit 20, and the user access cost upper limit information input unit 30. (Step S1).

Next, the NMS 100 determines whether or not the number of accesses per unit time obtained from the frequency information exceeds the upper limit of the number of accesses by the access form selection unit 40 from both systems (step S2). .. When the amount is exceeded (Yes in step S2), the NMS 100 selects access from one system by the access form selection unit 40 (step S5). After selection, the access type selection process ends.

On the other hand, when the number of accesses does not exceed (No in step S2), in the NMS100, the cost calculated from the number of accesses per unit time obtained from the frequency information for access from both systems by the access form selection unit 40 is calculated. It is determined whether or not the cost upper limit is exceeded (step S3). When the amount is exceeded (Yes in step S3), the NMS 100 selects access from one system by the access form selection unit 40 (step S5). After selection, the access type selection process ends.

On the other hand, when the number of accesses does not exceed (No in step S3), the NMS 100 selects access from both systems by the access form selection unit 40 (step S4). After selection, the access type selection process ends.

According to this embodiment, since access from both systems of NMS100 is allowed within a range satisfying the restriction on access to API, it is possible to guarantee the accuracy of access of a predetermined level or higher. On the other hand, access from one system of NMS100 is allowed to ensure that the restrictions on access to API are satisfied.
Therefore, in accessing the API by the network service management device, it is possible to achieve both improvement of access accuracy and reduction of the number of accesses and cost.

Further, as a restriction on access to the API, when an upper limit of the number of accesses is set, it is possible to allow access from both systems of the NMS 100 so as not to exceed the upper limit of the number of accesses.
In addition, as a restriction on access to the API, the access cost is set, and if the NMS100 side prepares the cost upper limit, it is possible to allow access from both systems of the NMS100 so as not to exceed the cost upper limit. it can.

≪Others≫
Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be appropriately modified without departing from the gist of the present invention.
(A) For example, in the present embodiment, the case where the NMS 100 adopts both systems having a dual configuration by the 0/1 system has been described, but the NMS 100 includes a working system and a standby system, and is a triple or more multiplex. The present invention can also be applied to the case of adopting a plurality of systems having a configuration. For a plurality of NMSs having a multiple configuration, the access mode selection unit 40 accesses from one of the plurality of NMS 100s (single system access) based on the API restriction information, or from all of the plurality of NMS 100s. You can select the form of access (multiple access). Further, when the NMS 100 has an N-layered configuration (N is a natural number), the access form selection unit 40 has 2, 3, ..., N out of N NMS 100s based on the API restriction information. -You can also select the form to access from one unit.

(B) Further, in the present embodiment, it has been described that one-system access or two-system access is selected for the same API, but when accessing a plurality of APIs (for example, APIs 1 to 5), APIs are used. There is also a way to control the behavior of the entire group. For example, the upper limit of the cost when the NMS 100 accesses the API is calculated as the total value of the upper limit of the cost for each of APIs 1 to 5. Then, in order not to exceed the total value of the upper limit of the cost, for example, APIs-1 to 3 are always accessed by both systems (multiple systems), and APIs 4 and 5 are always accessed by one system. It is possible to select the access form of performing.

(C) Further, it is possible to appropriately change the access timing of the NMS 100 with respect to the APIs 1 to 5 shown in (b). For example, at one access timing, one-system access is performed only to API-1 and 2, at the next timing, one-system access is performed only to API-3 and 4, and at the next timing, one-system access is performed. One-sided access is performed only for API-5 and 1. In this way, the API that is the target of one-way access can be changed in a round robin manner.

Further, among the processes described in each of the above embodiments, all or part of the processes described as being automatically performed can be manually performed, or the processes described as being manually performed. It is also possible to automatically perform all or part of the above by a known method. In addition, the processing procedure, control procedure, specific name, and information including various data and parameters shown in the above-mentioned document and drawings can be arbitrarily changed unless otherwise specified.
Further, each component of each of the illustrated devices is a functional concept, and does not necessarily have to be physically configured as shown in the figure. That is, the specific form of distribution / integration of each device is not limited to the one shown in the figure, and all or part of the device is functionally or physically distributed / physically in arbitrary units according to various loads and usage conditions. It can be integrated and configured.

Further, each of the above configurations, functions, processing units, processing means and the like may be realized by hardware by designing a part or all of them by, for example, an integrated circuit. In addition, each of the above configurations, functions, and the like may be realized by software for the processor to interpret and execute a program that realizes each function. Information such as programs, tables, and files that realize each function can be stored in memory, hard disks, recording devices such as SSDs (Solid State Drives), IC (Integrated Circuit) cards, SD (Secure Digital) cards, optical disks, etc. It can be held on a recording medium. Further, in the present specification, the processing steps for describing the time-series processing are not necessarily the processing performed in the time-series according to the described order, but are parallel or individual. It also includes processing executed in (for example, parallel processing or processing by an object).

It is also possible to realize a technique in which various techniques described in the present embodiment are appropriately combined.
The software described in this embodiment can be realized as hardware, and the hardware can also be realized as software.
In addition, the hardware, software, flowchart, and the like can be appropriately changed without departing from the spirit of the present invention.

100 Network Service Management Device (NMS)
10 API cost / access count limit information input unit (API limit information input unit: API limit information input means)
11 API cost / access count limit information storage unit 20 API access frequency information input unit 21 API access frequency information storage unit 30 User access cost upper limit information input unit 31 User access cost upper limit information storage unit 40 Access type selection unit (access type selection means) )
41 Access type information storage unit 50 Device / API access unit (0 series)
51 Collected information storage unit 60 Device / API access unit (1 system)
61 Collected information storage unit 200 Device / API to be accessed

Claims (3)

A network service management device that accesses one or more APIs (Application Programmable Interfaces) published on the network.
There are a plurality of the network service management devices, and they have a multiplex configuration including an active system and a standby system.
An API restriction information input unit that accepts input of API restriction information indicating restrictions on access to the API from the network service management device, and an API restriction information input unit.
Based on the API restriction information, an access form selection unit for selecting a form of accessing from one of the plurality of network service management devices or a form of accessing from all of the plurality of network service management devices is provided. e,
The API restriction information includes an upper limit of the number of accesses from the network service management device within a predetermined period.
The network service management device further includes an API access frequency information input unit that receives input of frequency information indicating an access interval when the network service management device accesses the API.
The access form selection unit obtains the number of accesses per unit time of the network service management device from the frequency information, and the number of accesses exceeds the upper limit of the number of accesses due to access from all of the network service management devices. When doing so, select a form of access from one of the plurality of network service management devices, and then select
The API restriction information includes the cost of one access to the API from the network service management device.
The network service management device further includes a user access cost upper limit information input unit that accepts input of cost upper limit information indicating an allowable cost upper limit within a predetermined period for the cost of accessing the API from the network service management device. Prepare,
When the cost calculated from the number of accesses exceeds the cost upper limit due to access from all of the network service management devices, the access form selection unit accesses from one of the plurality of network service management devices. Select the form to do,
A network service management device characterized by this. A network service management method in a network service management device that accesses one or more APIs published on the network.
There are a plurality of the network service management devices, and they have a multiplex configuration including an active system and a standby system.
The network service management device is
The first step of accepting the input of API restriction information indicating the restriction on access to the API from the network service management device, and
Based on the API restriction information, and run mode is from one access of the plurality of the network service management device, or a second step of selecting a mode of access from all of the plurality of network service management apparatus, a ,
The API restriction information includes an upper limit of the number of accesses from the network service management device within a predetermined period.
The network service management device further executes a third step of accepting input of frequency information indicating an access interval when the network service management device accesses the API.
In the second step, the number of accesses per unit time of the network service management device is obtained from the frequency information, and the number of accesses exceeds the upper limit of the number of accesses due to the access from all of the network service management devices. In the case, select the form of accessing from one of the plurality of network service management devices, and select
The API restriction information includes the cost of one access to the API from the network service management device.
The network service management device further executes a fourth step of accepting input of cost upper limit information indicating an allowable cost upper limit within a predetermined period for the cost of accessing the API from the network service management device.
In the second step, when the cost calculated from the number of accesses due to access from all of the network service management devices exceeds the cost upper limit, access is performed from one of the plurality of network service management devices. Select a form,
A network service management method characterized by that. A computer as the network service management device having a plurality of network service management devices that access one or more APIs published on the network and having a multiple configuration including an active system and a standby system.
An API restriction information input means that accepts input of API restriction information indicating restrictions on access to the API from the network service management device.
Based on the API restriction information, it functions as an access form selection means for selecting a form of accessing from one of the plurality of network service management devices or a form of accessing from all of the plurality of network service management devices. ,
The API restriction information includes an upper limit of the number of accesses from the network service management device within a predetermined period.
The computer is further made to function as an API access frequency information input means that accepts input of frequency information indicating an access interval when the network service management device accesses the API.
The access form selection means obtains the number of accesses per unit time of the network service management device from the frequency information, and the number of accesses exceeds the upper limit of the number of accesses due to access from all of the network service management devices. When doing so, select a form of access from one of the plurality of network service management devices, and then select
The API restriction information includes the cost of one access to the API from the network service management device.
The computer is further made to function as a user access cost upper limit information input means that accepts input of cost upper limit information indicating an allowable cost upper limit within a predetermined period for the cost of accessing the API from the network service management device.
When the cost calculated from the number of accesses exceeds the cost upper limit due to access from all of the network service management devices, the access form selection means accesses from one of the plurality of network service management devices. Select the form to do,
Netw network service management program.

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