JP2020160793A - Information processing device, system, program, and control method - Google Patents

Abstract

To provide an information processing device, a system, a program, and a control method capable of further reducing the load in decentralized processing.SOLUTION: An information processing device includes receiving means for receiving a proxy execution request requesting proxy execution of processing of a request-source information processing device, execution determination means for determining, when the proxy execution request is received by the receiving means, whether a part or all of the processing of the request-source information processing device can be proxy-executed, proxy execution means for executing the processing of the request-source information processing device when the execution determination means determines that the proxy execution is feasible, distribution determination means for determining whether processing object information to be proxy-processed can be distributed to a plurality of information processing devices, and distribution means for distributing the processing object information to the information processing devices that proxy-execute the information when the distribution determination means determines that the information can be distributed.SELECTED DRAWING: Figure 11

Description

The present invention relates to information processing devices, systems, programs and control methods.

As a technique for distributing the load on the server, Patent Document 1 discloses a system in which servers connected to a network cooperate to execute processing. Patent Document 2 discloses a technique for causing another device to perform processing on its behalf. Patent Document 3 discloses a technique for dividing a process into a plurality of processing nodes and adjusting the process assigned to the process node at the process node that requests the process.

International Publication No. 2017/145389 Japanese Unexamined Patent Publication No. 2006-268166 Japanese Unexamined Patent Publication No. 2006-201896

Even if the requesting device requests processing from a plurality of other devices in order to distribute the processing load, there is a problem that a load related to processing allocation is generated and the load of the requesting device is not reduced so much. It was.

Therefore, an object of the present invention is to provide an information processing device, a system, a program, and a control method capable of further reducing the load in distributed processing.

In order to achieve the above object, the present invention receives a proxy execution request requesting proxy execution of the processing of the requesting information processing apparatus, and a request when the proxy execution request is received by the receiving means. The execution determination means for determining whether or not a part or all of the processing of the original information processing device can be executed by proxy, and the information processing apparatus of the requesting source when the execution determination means determines that the processing can be executed by proxy. Distributable by the proxy execution means for executing the processing of the above, the distribution determination means for determining whether or not the processing target information to be the processing to be executed by proxy can be distributed to a plurality of information processing devices, and the distribution determination means. It has a distribution means for distributing the processing target information to an information processing apparatus that executes the processing target information on behalf of the information processing apparatus when it is determined.

In order to achieve the above object, according to another aspect of the present invention, an information processing device including a plurality of information processing devices and requesting proxy execution of processing is a proxy requesting proxy execution of processing. When the information processing apparatus including the transmission means for transmitting the execution request and receiving the proxy execution request receives the proxy execution request by the receiving means for receiving the proxy execution request and the receiving means, the information of the request source is obtained. The execution determination means for determining whether or not a part or all of the processing of the processing device can be executed by proxy, and the processing of the information processing apparatus of the requesting source when the execution determination means determines that the processing can be performed by proxy. It was determined by the proxy execution means to be executed, the distribution determination means for determining whether or not the processing target information to be the processing to be executed by proxy can be distributed to a plurality of information processing devices, and the distribution determination means. In this case, it has a distribution means for distributing the processing target information to an information processing apparatus that executes the processing target information on behalf of the information processing apparatus.

In order to achieve the above object, according to another aspect of the present invention, the receiving step of receiving the proxy execution request requesting the computer to execute the processing of the requesting information processing apparatus as a proxy, and the receiving step, When the proxy execution request is received, the execution determination step of determining whether or not a part or all of the processing of the requesting information processing apparatus can be proxy-executed, and the execution determination step determine that the proxy execution is possible. In addition, a proxy execution step for executing the processing of the requesting information processing device, a distribution determination step for determining whether or not the processing target information to be the processing to be executed by proxy can be distributed to a plurality of information processing devices, and This is a program for executing a distribution step of distributing the processing target information to an information processing apparatus that executes the processing target information on behalf of the information processing apparatus when it is determined by the distribution determination step that the information can be distributed.

In order to achieve the above object, according to another aspect of the present invention, a receiving step of receiving a proxy execution request requesting proxy execution of processing of the information processing device of the requesting source, which is a control method of the information processing device. When the proxy execution request is received by the reception step, the execution determination step of determining whether or not a part or all of the processing of the requesting information processing apparatus can be proxy executed, and the execution determination step of the proxy execution determination step. When it is determined that the information processing device can be executed, the proxy execution step for executing the processing of the requesting information processing device and whether or not the processing target information to be the processing to be executed by proxy can be distributed to a plurality of information processing devices. It has a distribution determination step for determining, and a distribution step for distributing the processing target information to an information processing apparatus that executes the processing target information on behalf of the information processing device when it is determined by the distribution determination step that distribution is possible.

According to the present invention, the effect that the load in the distributed processing can be further reduced can be obtained.

It is a figure which shows the structural example of the information processing system which shows the structure of one Embodiment of this invention. It is a block diagram which shows the structure of a server. It is a figure which shows the server list DB, history DB, and message format. It is a sequence diagram which shows the application example (the 1). It is a sequence diagram which shows the application example (the 2). It is a sequence diagram which shows the application example (the 3). It is a flowchart which shows the processing flow of the request source server. It is a flowchart which shows the processing flow of the receiving server when the proxy execution request is received. It is a flowchart which shows the processing flow of the receiving server after transmitting the proxy execution response. It is a flowchart which shows the processing flow of the receiving server after transmitting the proxy execution response. It is a figure which shows the minimum structure of the information processing apparatus by this embodiment.

Hereinafter, an information processing system according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration example of an information processing system 100 showing the configuration of an embodiment of the present invention. In the present embodiment, as an example of an information processing system, a system in which a Patlite (registered trademark) is turned on when a predetermined subject is included in an image captured by a camera is used as an example.

The information processing system 100 includes a back-end server 1 and a plurality of servers 2A, 2B, 2C, and 2D. Hereinafter, when each of the servers 2A, 2B, 2C, and 2D is not particularly distinguished, any one is expressed as the server 2. The server 2 is an example of an information processing device. Further, the server 2 is assumed to be an edge server. Edge servers generally have less processing power than other servers.

Cameras 102A, 102B, 102C, and 102D are connected to the servers 2A, 2B, 2C, and 2D, respectively. Patlites 202A, 202B, 202C, and 202D are connected to the servers 2A, 2B, 2C, and 2D, respectively. Hereinafter, if each of the cameras 102A, 102B, 102C, and 102D is not particularly distinguished, any one of them will be referred to as a camera 102. When each of Patlite 202A, 202B, 202C, and 202D is not particularly distinguished, any one unit is expressed as Patlite 202.

The back-end server 1 and the server 2 are connected by the network 10 and can communicate with each other. The back-end server 1 provides the server 2 with server information described later for communicating with another server 2.

The server 2 controls the camera 102 and the patrol light 202. The server 2 executes an image determination process for determining whether or not a predetermined subject is included in the image data indicating the image captured by the camera 102. The processing result of the image determination process indicates whether or not a predetermined subject is included. The server 2 turns on the patlite 202 when a predetermined subject is included as a result of the image determination process. The server 2 can request another server 2 to execute the image determination process on behalf of the server 2. A request for proxy execution to another server 2 may be expressed as a proxy execution request.

The server 2 that has received the proxy execution request determines whether or not a part or all of the processing can be proxy executed. When the server 2 determines that the proxy execution is not possible, the server 2 transfers the proxy execution request to another server 2 different from the requesting server 2.

On the other hand, when it is determined that a part or all of the processing can be executed by proxy, the server 2 operates in any of the three operation modes. The main processes executed by the server 2 regarding the proxy execution include the image determination process, the distribution process, and the process result transmission process described above. Of these, the distribution process is a process of distributing processing target information (in the present embodiment, image data indicating an image captured by the camera 102) that is the target of the image determination process to several servers. The process result transmission process is a process of transmitting the process result of the image determination process to the requesting server 2. When the server 2 distributes the image information to another server 2 by the distribution process, the server 2 receives the process result from the distributed server 2 in the process result transmission process, and transmits the received process result to the requesting server 2. To do.

There are four operation modes: full processing mode, partial processing (with distribution) mode, partial processing (without distribution) mode, and distribution mode. Of these, all processing modes are modes in which all the processing requested by the proxy execution request is processed by the own server. When operating in all processing modes, one server 2 executes the above image determination processing and processing result transmission processing.

The partial processing (with distribution) mode is a mode in which a part of the image determination processing is executed and the processing of distributing the processing target information to the other server 2 is executed. For example, it is assumed that the server A executes 50% of the image determination processing and the server B executes the remaining 50%. Then, when the server B operates in the partial processing (with distribution) mode, the server B receives the processing target information from the requesting server, distributes 50% to the server A, and also 50% by itself. Executes the image judgment process of.

The partial processing (no distribution) mode is a mode in which a part of the image determination processing is executed, but the distribution processing is not executed. For example, the server A is operating in a partial processing (no distribution) mode.

The distribution mode is a mode in which only distribution processing is performed. For example, assuming that the server B operates in a partial processing (no distribution) mode, a proxy execution request indicating that the server A can execute 50% of the processing and the server B can execute 50% of the processing. Was transferred to the server C. Since the server C executes 100% of the image determination processing in total on the servers A and B, there is no room for the server C to execute the image determination processing by itself, so it is determined whether or not to operate in the distribution mode. Become. When the server C operates in the distribution mode, the server C receives the processing target information from the requesting server and distributes it to the servers A and B by 50% each. The server C receives the processing results from the servers A and B, and executes the processing result transmission processing.

FIG. 2 is a block diagram showing the configuration of the server 2. The server 2 includes a message receiving unit 501, a result confirmation unit 502, an instruction acquisition unit 503, a determination unit 504, a device instruction creation unit 505, a status update unit 506, a status reflection unit 507, a message transmission unit 509, a request creation unit 510, and an instruction. It includes a creation unit 511, a result creation unit 512, a processing execution unit 514, a light control unit 516, and an image acquisition unit 515. The server 2 includes a server list DB 508 and a history DB 513. The DB in the server list DB 508 and the history DB 513 indicates a database. The server list DB 508 is a database used when defining a server 2 for transmitting a proxy execution request, and the details will be described later. The history DB 513 is a database showing an outline of executed processing, and the details will be described later.

The message receiving unit 501 receives various information from the network 10. When the message receiving unit 501 receives the processing result of the image determination processing from the other server 2, the message receiving unit 501 outputs the processing result to the result confirmation unit 502. Since the server information regarding the status and performance of the server 2 that executed the process is received together with the process result, the server information is also output. Details of the server information will be described later. When the message receiving unit 501 receives the processing target information from the other server 2, it outputs the processing target information to the instruction acquisition unit 503. The instruction acquisition unit 503 outputs the acquired processing target information to the processing execution unit 514. When the message receiving unit 501 receives the proxy execution request from the other server 2, it outputs the message receiving unit 501 to the determination unit 504. Since the server information of the other server 2 is received together with the proxy execution request, the server information is also output.

The result confirmation unit 502 confirms the processing result and outputs the processing result to the device instruction creation unit 505. The device instruction creation unit 505 creates an instruction for the patrol light 202 based on the processing result, and outputs the instruction to the light control unit 516. The light control unit 516 controls the patrol light 202 based on the instruction. Further, the result confirmation unit 502 outputs the server information to the state update unit 506. The state update unit 506 updates the server list DB 508 based on the server information.

Upon receiving the proxy execution request, the determination unit 504 determines whether or not a part or all of the processing of the requesting server 2 can be proxy executed. Further, the determination unit 504 determines whether or not the processing target information can be distributed to the plurality of servers 2. Further, the determination unit 504 outputs the server information to the state reflection unit 507. The state reflection unit 507 reflects the server information in the server list DB 508.

The message transmission unit 509 transmits various information to the network 10. When operating as the request source server 2, the request creation unit 510 refers to the server list DB 508 and the history DB 513, and transmits a proxy execution request to another server 2 by the message transmission unit 509. Further, when the determination result by the determination unit 504 needs to send the proxy execution request to the other server 2, the request creation unit 510 refers to the server list DB 508 and the history DB 513 and executes the proxy execution to the other server 2. The request is forwarded by the message transmitter 509.

When operating as the requesting server 2, the device instruction creation unit 505 transfers the processing target information to another server 2 by the message transmission unit 509. The processing target information is acquired by the image acquisition unit 515. The result creation unit 512 transmits the processing result of the image determination process executed by proxy by the message transmission unit 509. Further, when the result creation unit 512 distributes the processing target information to the other server 2, the processing target information to be distributed is transmitted by the message transmission unit 509.

The processing execution unit 514 executes image determination processing on the processing target information acquired by the image acquisition unit 515 and the processing target information output by the instruction acquisition unit 503. The processing result of the image determination processing is output to the result creation unit 512. The processing execution unit 514 creates an instruction for the patrol light 202 based on the processing result of the image determination processing, and outputs the instruction to the light control unit 516.

The process execution unit 514 outputs the execution result (data size, etc.) of the image determination process to the history DB 513. The processing execution unit 514 divides the processing target information output by the instruction acquisition unit 503 in order to distribute it to the other servers 2. The divided processing target information is output to the result creation unit 512.

The image acquisition unit 515 outputs image data indicating an image captured by the camera 102 to the processing execution unit 514, or provides the image data to each unit via the server list DB 508. The light control unit 516 controls the patlite 202 and acquires the state of the patlite 202 based on the instruction.

Next, the server list DB 508 and the history DB 513 described above will be described. FIG. 3A is a diagram showing an example of the server list DB508. The server list DB508 is composed of a server name, an IP address, performance information, a status, and a last update time. Of these, the server name, IP address, performance information, and status are server information.

The server name indicates the name of the server 2. The IP address indicates the IP address of the server 2. The performance information includes information on the operating frequency (Hz) of the CPU (Central Processing Unit) and the number of cores. The state indicates the state of the server 2. The states include idle, controlling, and surrogate execution. During control, it indicates that its own processing is being executed instead of proxy execution. During proxy execution, it indicates that the processing of the other server 2 is being executed. The last update time indicates the time when the server information was updated. In addition to the time, the date may be stored.

In FIG. 3A, for example, the server D has an IP address of 192.168.0.3, a CPU operating frequency of 1.5 GHz, and four cores, as of 4:22. It can be seen that the state is being executed by proxy.

FIG. 3B is a diagram showing an example of the history DB 513. The history DB 513 is composed of a data size, a CPU usage rate, and a processing time. The data size indicates the data size of the information to be processed, and the unit is kilobytes, megabytes, or the like. The CPU usage rate indicates the CPU usage rate when the image determination process is executed for the processing target information, and% is used as the unit. The processing time is the time required to execute the image determination processing, and the unit is seconds. It can be seen that the processing capacity of the server 2 having the history shown in FIG. 3B is about 100 KB / sec when the CPU usage rate is 100%.

FIG. 3C is a diagram showing a message format of a proxy execution request. The proxy execution request is composed of a request source, a processing amount, a processing time, and 0 or more proxy execution information. The request source is the IP address of the request source server 2. The processing amount is the data size of the processing target information for which proxy execution is requested. The processing time is the time required for the image determination processing specified by the requester, and it is required that the processing be completed within the time.

The proxy execution information is composed of server information and processing amount. Proxy execution information is provided for the number of servers 2 that have received the proxy execution request. The proxy execution information is transferred to another server 2 by adding new proxy execution information to the original message received by the server 2. The server information in the proxy execution information is the server information of the server 2 that has received the proxy execution information, and the processing amount is the processing amount processed by the server 2 shown in the server information. If the receiving server 2 does not perform proxy execution at all, the processing amount is set to 0 and proxy execution information is added.

The requester determines the destination of the proxy execution request by referring to the server list DB508. This server list DB 508 is reflected when the server 2 is started, when a proxy execution request is received, or when a processing result is received. When the server 2 is started, the server information of the other server 2 is provided from the back-end server 1 described above, so that the server list DB 508 is created at this time. The server information provided by the back-end server 1 may be the server information of the server 2 adjacent to the provided server 2 or the server 2 set by the system administrator. The adjacent server 2 means, for example, a physically closest server 2, a server 2 having a small network delay, or a server 2 connected to the same hub.

Further, according to the present embodiment, the requesting server 2 does not need to store the server information of the server 2 further transferred by the server 2 to which the requesting source has transmitted the proxy execution request. Further, since the server information provided by the back-end server 1 and the server information added when the proxy execution request is received are stored in the server list DB 508, the server information is not stored more than necessary.

As a result, the server 2 does not need to store a large amount of server information, so that the hardware resources of the server 2 can be effectively used, and a server that stores all the server information is not required.

When a plurality of servers 2 are stored in the server list DB508, the requesting server 2 has an idle server 2 or a good performance (for example, the product of the operating frequency and the number of cores) as the destination of the proxy execution request. (Large, etc.) The server 2 is preferentially determined.

The server 2 that has received the proxy execution request determines whether or not proxy execution is possible based on the processing amount of the proxy execution request, its own state, and the like (in other words, determines the processable amount (0% to 100%). ). For example, when the image determination process based on the proxy execution request is executed, it is determined that the proxy execution is possible if any of the following conditions (a) and (b) is satisfied.
(A) Even if the calculation that the server 2 originally needs to execute, the control process of Patlite 202, and the image determination process by the proxy execution request are executed in parallel, the real-time performance of various controls on the server 2 is not impaired. (B) The image determination process is completed within a time when the server 2 does not need to perform the calculation originally required to be executed or the control process of Patlite 202.

In the case of (a), for example, the server 2 refers to the history DB 513, and either the maximum value of the CPU usage rate when the image determination process is executed or the maximum value of the CPU usage rate under the control of Patlite 202 is larger. Find the CPU usage rate of the other side. It is determined that (a) is satisfied when the CPU usage rate is 100% or less even if the CPU usage rate and the CPU usage rate due to the proxy execution when the proxy execution is performed from now on are combined. (B) is an effective condition, for example, when it is known in advance that the idle state will continue for about 10 minutes from now on.

Next, specific application examples and processing flows will be described using sequence diagrams and flowcharts. In the following description, for the sake of clarity, the requesting server 2 is referred to as a requesting server, and the server 2 that receives the proxy execution request is referred to as servers A, B, C, a receiving server, and the like.

FIG. 4 is a sequence diagram showing an application example (No. 1). The requesting server sends a proxy execution request to the server A (step S101). The server A that has received the proxy execution request determines that it cannot be executed, and transfers the proxy execution request to the server B (step S102). Upon receiving the proxy execution request, the server B determines that all the processing can be executed by proxy, and transmits the proxy execution response to the requesting server (step S103). As a result, the server B operates in all processing modes.

The requesting server transmits the processing target information to the server B (step S104). The server B executes the image determination process on behalf of the server, transmits a result notification for notifying the process result to the requesting server (step S105), and ends the process. In the application example of FIG. 4, the server A and the server B can update the server list DB 508 when receiving the proxy execution request, and the requesting server can update the server list DB 508 when receiving the proxy execution response or receiving the result notification. In the other application examples described below, the server list DB 508 can be updated in the same manner.

FIG. 5 is a sequence diagram showing an application example (No. 2). The requesting server sends a proxy execution request to the server A (step S201). Upon receiving the proxy execution request, the server A determines that 30% of the processing amount can be executed, and transfers the proxy execution request to the server B (step S202). The server B that has received the proxy execution request determines that 70% of the remaining processing amount can be proxy executed, further determines that distribution is possible, and transmits a proxy execution response to the requesting server (step S203). As a result, the server A operates in the partial processing (without distribution) mode, and the server B operates in the partial processing (with distribution) mode.

The requesting server transmits the processing target information to the server B (step S204). The server B transmits 30% of the processing target information to the server A (step S205), and executes 70% of the image determination processing on behalf of the server B. The server A executes the image determination process for 30% on behalf of the server, and transmits the result notification to the server B (step S206). The server B transmits a result notification for notifying its own processing result and the processing result of the server A to the requesting server (step S207), and ends the processing.

FIG. 6 is a sequence diagram showing an application example (No. 3). The requesting server sends a proxy execution request to the server A (step S301). Upon receiving the proxy execution request, the server A determines that 30% of the processing amount can be executed, and transfers the proxy execution request to the server B (step S302). The server B that has received the proxy execution request determines that 70% of the remaining processing amount can be proxy executed, but determines that distribution is not possible, and transfers the proxy execution request to the server C (step S303).

The server C that has received the proxy execution request determines that it can be distributed, and transmits the proxy execution response to the requesting server (step S304). As a result, the server A and the server B operate in the partial processing (no distribution) mode, and the server C operates in the distribution mode.

The requesting server transmits the processing target information to the server C (step S305). The server C transmits 30% of the processing target information to the server A (step S306), and transmits 70% of the processing target information to the server B (step S307). The server A executes the image determination process for 30% on behalf of the server, and transmits the result notification to the server C (step S308). The server A executes the image determination process for 30% on behalf of the server, and transmits the result notification to the server C (step S308). Server B executes 70% of the image determination processing on behalf of the server, and transmits a result notification to server C (step S309). The server C transmits a result notification for notifying the processing result of the server A and the processing result of the server B to the requesting server (step S310), and ends the processing.

As shown in the application example described above, the requesting server may send a proxy execution request, send processing target information, and wait for result notification. In this way, the requesting server does not need to search for the requesting destination many times, and the load related to the allocation of the processing executed by the receiving server (such as the load due to the distribution of the processing target information) does not occur, so that the load in the distributed processing does not occur. Can be further reduced.

In addition, the receiving server can not only reduce the load but also reduce the load because it can flexibly respond to the performance and status of the receiving server, such as being able to execute proxy processing to the extent possible by the receiving server and executing only distribution. It is possible to perform distributed processing more according to the actual situation.

Next, the processing flow of the requesting server and the receiving server will be described using a flowchart. FIG. 7 is a flowchart showing a processing flow of the requesting server. The requesting server refers to the server list DB508 and determines the receiving server requesting proxy execution (step S401). The requesting server transmits a proxy execution request to the determined receiving server (step S402).

When the requesting server waits for the proxy execution response from the receiving server and receives the proxy execution response (step S403: YES), the requesting server transmits the processing target information to the receiving server that sent the proxy execution response (step S404). The requesting server waits for the result notification from the receiving server, and when it receives the result notification (step S405: YES), executes the control according to the processing result (step S406), and ends the processing.

As shown in FIG. 7, the requesting server may send a proxy execution request, send processing target information, and wait for the result notification. Moreover, since the processing is very light as shown in the flowchart, the load on the requesting server can be further reduced.

Next, the processing flow of the receiving server will be described. FIG. 8 is a flowchart showing a processing flow of the receiving server when the proxy execution request is received. When the receiving server receives the proxy execution request, if there is proxy execution information, the receiving server obtains the sum of the processing amounts shown in the proxy execution information, and determines whether or not the remaining processing amount is other than 0%. If there is no proxy execution information, the remaining processing amount is 100%.

When the remaining processing amount is other than 0% (step S501: YES), the receiving server determines the processingable amount (step S502) and branches according to the determined processingable amount (step S503). When the processable amount is 0%, that is, when processing is not possible at all, the receiving server refers to the server list DB508 and determines the transfer destination of the proxy execution request (step S504). The receiving server transfers the proxy execution request to the determined transfer destination (step S505), and ends the process.

If the processable amount is determined to be 100% in step S502, the receiving server operates in all processing modes (step S506), sends a proxy execution response to the requester (step S511), and ends the processing.

If it is determined in step S502 that the processable amount is a part (greater than 0% and less than 100%), the receiving server determines whether or not the remaining processable amount becomes 0 based on this processable amount. Step S507). When the remaining processing amount becomes 0, the receiving server determines whether or not the processing target information can be distributed (step S508). If the distribution process is also possible (step S508: YES), the receiving server operates in the partial process (with distribution) mode (step S509), sends a proxy execution response to the requester (step S511), and performs the process. finish.

When the distribution process is impossible (step S508: NO), the receiving server operates in the partial processing (no distribution) mode (step S510), and the receiving server refers to the server list DB508 and makes a proxy execution request. The transfer destination of is determined (step S504). The receiving server transfers the proxy execution request to the determined transfer destination (step S505), and ends the process.

In step S501, when the remaining processing amount is 0% (step S501: NO), the receiving server determines whether or not it can operate in the distribution mode (step S512). If it cannot operate in the distribution mode (step S512: NO), the receiving server refers to the server list DB508 and determines the transfer destination of the proxy execution request (step S504). The receiving server transfers the proxy execution request to the determined transfer destination (step S505), and ends the process.

On the other hand, if it can operate in the distribution mode (step S512: YES), the receiving server operates in the distribution mode (step S513), sends a proxy execution response to the requester (step S511), and ends the process. ..

Next, the processing flow of the receiving server operating in the full processing mode or the partial processing (with distribution) mode will be described with reference to FIG. FIG. 9 is a flowchart showing a processing flow of the receiving server after transmitting the proxy execution response. When the receiving server receives the processing target information (step S601: YES), the receiving server determines whether or not it is operating in all processing modes (step S602).

When operating in all processing modes (step S602: YES), the receiving server executes proxy processing (step S607), sends a result notification to the requesting server (step S606), and ends the processing. ..

If it is not operating in all processing modes (step S602: NO), it is operating in partial processing (with distribution) mode, so the receiving server transmits a data notification to the distribution destination (step S604). Next, the receiving server executes proxy processing (step S604), waits for the result notification from the distribution destination, and when it receives the result notification (step S605), the result notification that notifies its own processing result and the processing result of the distribution destination. Is transmitted to the requesting server (step S606), and the process ends.

In this way, even when distributed processing is performed by a plurality of servers 2, the processing result is transmitted by one server 2. Therefore, since the requesting server does not have to wait for the processing result from each of the servers 2 to be executed by proxy, the load related to the distributed processing can be further reduced.

Next, the processing flow of the receiving server operating in the distribution mode will be described with reference to FIG. FIG. 10 is a flowchart showing a processing flow of the receiving server after transmitting the proxy execution response. When the receiving server receives the processing target information (step S701: YES), the receiving server transmits a data notification to the distribution destination (step S702). Next, the receiving server waits for the result notification from the distribution destination, and when receiving the result notification (step S703: YES), sends the result notification notifying the processing result of the distribution destination to the requesting server (step S704), and processes. To finish.

By making it possible to execute only the distribution in this way, the server 2 that has received the proxy execution request can flexibly execute the image determination process or only the distribution according to the load. Can be decided.

In the above-described embodiment, a server that controls a camera and a patrol light is taken as an example, but the present invention is not limited to this. As long as the device can be controlled by the server, such as a flapper gate, the control target may be any device.

FIG. 11 is a diagram showing a minimum configuration of the information processing apparatus 600 according to the present embodiment. The information processing apparatus 600 according to the present embodiment may include at least the receiving means 601, the execution determining means 602, the proxy executing means 603, the distribution determining means 604, and the distributing means 605.

The receiving means 601 receives a proxy execution request requesting proxy execution of the processing of the requesting information processing apparatus. When the execution determination means 602 receives the proxy execution request by the reception means 601, the execution determination means 602 determines whether or not a part or all of the processing of the requesting information processing apparatus can be proxy execution. The proxy execution means 603 executes the processing of the requesting information processing apparatus when the execution determination means 602 determines that the proxy execution is possible. The distribution determination means 604 determines whether or not the processing target information to be processed by proxy execution can be distributed to a plurality of information processing devices. When the distribution determination means 604 determines that the distribution means can be distributed, the distribution means 605 distributes the processing target information to the information processing apparatus that executes the processing target information on behalf of the information processing device.

The information processing device 600 described above has a computer system inside. The process of the process shown in FIGS. 4 to 10 described above is stored in a computer-readable recording medium in the form of a program, and the process is performed by the computer reading and executing this program. .. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Further, this computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

Note that the program for realizing the function of the information processing apparatus 600 in FIG. 11 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read by the computer system and executed. -The process shown in FIG. 10 may be performed. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. Further, the "computer system" shall also include a WWW system provided with a homepage providing environment (or display environment). Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system. Furthermore, a "computer-readable recording medium" is a volatile memory (RAM) inside a computer system that serves as a server or client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, it shall include those that hold the program for a certain period of time.

Further, the program may be transmitted from a computer system in which this program is stored in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting a program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the above program may be for realizing a part of the above-mentioned functions. Further, a so-called difference file (difference program) may be used, which can realize the above-mentioned functions in combination with a program already recorded in the computer system.

The present invention relates to information processing devices, systems, programs and control methods.

1 Back-end server 2 Server 10 Network 102 Camera 202 Patlite 501 Message receiving unit 502 Result confirmation unit 503 Instruction acquisition unit 504 Judgment unit 505 Device instruction creation unit 506 Status update unit 507 Status reflection unit 508 Server list DB
509 Message transmission unit 510 Request creation unit 511 Instruction creation unit 512 Result creation unit 513 History DB
514 Processing execution unit 515 Image acquisition unit 516 Light control unit 600 Information processing device 601 Information processing device 601 Reception means 602 Execution determination means 603 Proxy execution means 604 Distribution judgment means 605 Distribution means

Claims (9)

A receiving means for receiving a proxy execution request requesting proxy execution of the processing of the requesting information processing device, and
When the proxy execution request is received by the receiving means, the execution determination means for determining whether or not a part or all of the processing of the requesting information processing apparatus can be proxy executed, and
When the execution determination means determines that the proxy execution is possible, the proxy execution means for executing the processing of the requesting information processing device and the proxy execution means.
A distribution determination means for determining whether or not processing target information to be processed by proxy can be distributed to a plurality of information processing devices.
When the distribution determination means determines that the information can be distributed, the distribution means that distributes the processing target information to the information processing apparatus that executes the processing target information on behalf of the information processing apparatus.
Information processing device with. The information processing according to claim 1, wherein when the execution determination means determines that proxy execution is not possible, the proxy execution request is transferred to another information processing device different from the information processing device of the request source. apparatus. When it is determined by the execution determination means that some processes can be executed, the proxy execution request indicating that some processes can be executed is different from the information processing device of the request source. The information processing device according to claim 1 or 2, which can be transferred to another information processing device. The information processing device according to claim 2 or 3, wherein the proxy execution request is transferred based on a list showing the performance and state of the information processing device capable of transferring the proxy execution request. When it is determined by the execution determination means that a part of the processing can be executed by proxy and the distribution determination means determines that the distribution is possible, the processing of the information processing apparatus of the requesting source is executed and the above The information processing apparatus according to any one of claims 1 to 4, which distributes information to be processed to an information processing apparatus that executes proxy execution. When the processing target information is distributed to the information processing apparatus to be executed by proxy by the distribution means, the processing result of the proxy processing is received from the distributed information processing apparatus, and the processing result is processed by the requester. The information processing device according to any one of claims 1 to 5, which is transmitted to the device. A system that includes multiple information processing devices
An information processing device that requires proxy execution of processing
A transmission means for sending a proxy execution request requesting proxy execution of processing is provided.
The information processing device that receives the proxy execution request is
A receiving means for receiving the proxy execution request and
When the proxy execution request is received by the receiving means, the execution determination means for determining whether or not a part or all of the processing of the requesting information processing apparatus can be proxy executed, and
When the execution determination means determines that the proxy execution is possible, the proxy execution means for executing the processing of the requesting information processing device and the proxy execution means.
A distribution determination means for determining whether or not processing target information to be processed by proxy can be distributed to a plurality of information processing devices.
When the distribution determination means determines that the information can be distributed, the distribution means that distributes the processing target information to the information processing apparatus that executes the processing target information on behalf of the information processing apparatus.
System with. On the computer
A receiving step for receiving a proxy execution request requesting proxy execution of the processing of the requesting information processing device, and
When the proxy execution request is received by the reception step, an execution determination step of determining whether or not a part or all of the processing of the requesting information processing apparatus can be proxy executed is performed.
When it is determined by the execution determination step that the proxy execution is possible, the proxy execution step for executing the process of the requesting information processing device and the proxy execution step
A distribution determination step for determining whether or not the processing target information to be processed by proxy can be distributed to a plurality of information processing devices, and a distribution determination step.
When the distribution determination step determines that the information can be distributed, the distribution step distributes the processing target information to the information processing apparatus that executes the processing target information on behalf of the information processing device.
A program to execute. It is a control method for information processing equipment.
A receiving step for receiving a proxy execution request requesting proxy execution of the processing of the requesting information processing device, and
When the proxy execution request is received by the reception step, an execution determination step of determining whether or not a part or all of the processing of the requesting information processing apparatus can be proxy executed is performed.
When it is determined by the execution determination step that the proxy execution is possible, the proxy execution step for executing the process of the requesting information processing device and the proxy execution step
A distribution determination step for determining whether or not the processing target information to be processed by proxy can be distributed to a plurality of information processing devices, and a distribution determination step.
When the distribution determination step determines that the information can be distributed, the distribution step distributes the processing target information to the information processing apparatus that executes the processing target information on behalf of the information processing device.
Control method having.

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