JP6149416B2 - Service bus device, service bus device control method, message transmission / reception system, and program - Google Patents

Description

  The present invention relates to a service bus device, a service bus device control method, a message transmission / reception system, and a program.

  In some cases, the service on the message receiving side does not have a function for returning a response between services that communicate via the service bus. In such a case, generally, the message exchange pattern of the service bus is configured as In-Only. In-Only is a pattern in which Done or Error is returned for a request message on the service bus. Done indicates completion of message transmission to the service. Error indicates that an error occurred during message transmission processing.

  Patent Document 1 discloses a system for automatically transmitting a message reception acknowledgment (reception confirmation).

Japanese Patent Laid-Open No. 6-152677

  However, depending on the contents of the external service, there are some that require an appropriate response message according to the type of transmission message, in addition to the information (Done / Error) indicating whether the message transmission has succeeded or failed. In the above-described service bus device configured with In-Only, even if such an external service transmits a message, a desired response message cannot be received. As a result, there is a possibility that communication cannot be completed normally.

  The present invention has been made to solve such a problem, and provides a service bus device, a service bus device control method, a message transmission / reception system, and a program capable of returning a response message corresponding to a request message. It is aimed.

  The service bus device according to the present invention is a service bus device that connects a transmission-side system that transmits a request message and a reception-side system that receives the request message, and receives the request message from the transmission-side system. Receiving means, message analyzing means for analyzing the request message, message type determining means for determining a message type indicating the type of the request message based on the analysis result, and a response according to the message type of the request message Response message creating means for creating a message, and sending means for sending the response message to the sending side system.

  A service bus device control method according to the present invention is a service bus device control method for connecting a transmission side system that transmits a request message and a reception side system that receives the request message, the transmission side system comprising: Receiving the request message from, analyzing the request message, determining a message type indicating the type of the request message based on the analysis result, and a response according to the message type of the request message Creating a message; and sending the response message to the sending system.

  A message transmission / reception system according to the present invention includes a transmission-side system that transmits a request message, a reception-side system that receives the request message, and a service bus device that connects the transmission-side system and the reception-side system. A message transmission / reception system, wherein a reception unit that receives the request message from the transmission side system, a message analysis unit that analyzes the request message, and a message type that indicates a type of the request message based on an analysis result Message type determination means, response message creation means for creating a response message according to the message type of the request message, and transmission means for sending the response message to the transmission side system.

  A program according to the present invention causes a computer to receive the request message from a transmission-side system, to analyze the request message, and to determine a message type indicating the type of the request message based on an analysis result. A step of generating a response message according to a message type of the request message, and a step of transmitting the response message to the transmission side system.

  According to the present invention, it is possible to provide a service bus device, a service bus device control method, a message transmission / reception system, and a program that can return a response message corresponding to a request message.

It is a block diagram of the service bus apparatus concerning an embodiment. It is a flowchart which shows operation | movement of the message transmission / reception system concerning embodiment. It is a flowchart which shows operation | movement of the automatic response preparation part concerning embodiment. It is a figure for demonstrating operation | movement of the message structure analysis part concerning embodiment. It is a figure which shows an example of the request message concerning an embodiment. It is a figure which shows an example of the analysis result of the request message concerning an embodiment. It is a flowchart which shows operation | movement of the response message preparation part concerning embodiment. It is a figure which shows the list | wrist stored in the message definition storage part concerning embodiment. It is a figure which shows an example of the response message definition concerning embodiment. It is a figure which shows an example of the list | wrist stored in the message definition storage part concerning embodiment. It is a figure which shows an example of the request message concerning an embodiment. It is a figure which shows an example of the response message definition concerning embodiment. It is a figure which shows an example of the response message concerning embodiment. It is a block diagram of the service bus apparatus concerning a comparative example. It is a block diagram of the service bus apparatus concerning an embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of the message transmission / reception system according to the present embodiment. The message transmission / reception system includes a transmission side service 120, a reception side service 150, and a service bus device 100. The service bus device 100 is connected to the transmission side service 120 and the reception side service 150. The transmission side service 120 (transmission side system) transmits a request message to the service bus device 100. The service bus device 100 transmits the request message received from the transmission side service 120 to the reception side service 150 (reception side system). The transmission side service 120 and the reception side service 150 are, for example, client terminals, server devices, application software (programs) on the network, and the like.

  The service bus device 100 includes an automatic response creation unit 110 and message transmission / reception units 130 and 140. The message transmission / reception unit 130 is connected to the transmission side service 120. The message transmission / reception unit 130 is connected to the message transmission / reception unit 140 and the automatic response creation unit 110. The message transmission / reception unit 140 is connected to the reception side service 150.

  The automatic response creation unit 110 includes a control unit 111, a message structure analysis unit 112, a message type determination unit 113, a response message creation unit 114, and a message definition storage unit 115. Hereinafter, the automatic response creation unit 110 which is a main part of the present invention will be mainly described.

  The control unit 111 receives a request message from the message transmission / reception unit 130 and controls processing until a response message is returned to the message transmission / reception unit 130. The control unit 111 is a central control device including a CPU (Central Processing Unit), for example, and controls the processing operation of each unit of the automatic response creating unit 110 based on a processing program stored in a memory (not shown).

  The message structure analysis unit 112 analyzes the structure of the request message in accordance with a command from the control unit 111 and makes various data included in the request message readable. Details of the message structure analysis processing will be described later.

  The message type determination unit 113 determines the message type of the request message in accordance with an instruction from the control unit 111. The message type is information indicating the type of request message. The message type corresponds to the type of response message requested by the transmission side service 120. The message type determination unit 113 determines the message type of the request message based on the analysis result of the message structure analysis unit 112.

  The response message creation unit 114 creates a response message according to the message type of the request message in response to a command from the control unit 111. Based on the message type, the response message creation unit 114 creates a response message by referring to the response message definition stored in the message definition storage unit 115.

  The message definition storage unit 115 stores the message definition of the response message (hereinafter also referred to as the response message definition) in association with the message type of the request message (hereinafter also referred to as the request message type). Specifically, the message definition storage unit 115 stores a list in which request message types and response message definitions are associated with each other. The message definition storage unit 115 is a memory such as a RAM (Random Access Memory) or a ROM (Read Only Memory), for example. The response message definition is a message template for creating a response message, and is stored in the message definition storage unit 115 in advance in association with the request message type. The response message creation unit 114 reads the response message definition from the message definition storage unit 115 when creating the response message.

  Next, the overall operation of the message transmission / reception system according to this exemplary embodiment will be described with reference to the flowchart shown in FIG. As a premise, both the message transmission / reception unit 130 and the message transmission / reception unit 140 have a message transmission unit and a message reception unit as communication units with the outside. On the other hand, the message transmitting / receiving unit 140 does not receive a message from the receiving service 150. In other words, the receiving service 150 includes a receiving unit that receives a request message from the message transmitting / receiving unit 140, but does not include a transmitting unit that transmits a message to the message transmitting / receiving unit 140. Communication between the message transmission / reception unit 140 and the reception service 150 is one-way, and a request message is transmitted only in the direction from the message transmission / reception unit 140 to the reception service 150. The message transmission / reception unit 140 returns Done or Error to the message transmission / reception unit 130 after transmitting the message to the receiving service 150. Done indicates completion of message transmission to the service. Error indicates that an error has occurred during transmission processing. The reception side service 150 has a function of receiving a request message. The transmission side service 120 transmits a request message to the message transmission / reception unit 130 and then waits for a reply from the message transmission / reception unit 130 (response message corresponding to the request message). .

  First, the transmission side service 120 transmits a request message to the message transmission / reception unit 130 (step S101). The message transmitting / receiving unit 130 receives the request message (step S102).

  The message transmission / reception unit 130 transmits the request message to the message transmission / reception unit 140 (step S103). When receiving the request message, the message transmission / reception unit 140 transmits the request message to the receiving service 150 (step S104). The message transmission / reception unit 140 transmits the transmission result to the message transmission / reception unit 130 after the completion of the request message transmission process (step S105). The transmission result is information indicating whether or not the request message from the message transmitting / receiving unit 140 to the receiving service 150 has been normally transmitted. That is, Done (normal) or Error (abnormal) transmission result information is transmitted to the message transmitting / receiving unit 130.

  Thereafter, the message transmitting / receiving unit 130 transmits the request message and the transmission result to the automatic response creating unit 110 (step S106). The request message transmitted to the automatic response creation unit 110 at this time is the request message received from the transmission side service 120 by the message transmission / reception unit 130 in step S102.

  The automatic response creation unit 110 creates a response message and transmits the response message to the message transmission / reception unit 130 (step S107). The message transmitting / receiving unit 130 receives the response message, and transmits the received response message to the transmission side service 120 (step S108). With the above operation, the service bus device 100 returns a response message to the transmitting service 120 that has transmitted the request message.

  Next, the response message creation processing of the automatic response creation unit 110 will be described in detail with reference to the flowchart shown in FIG. First, the control unit 111 receives a request message from the message transmission / reception unit 130 (step S201). At this time, the control unit 111 also receives information (transmission result) indicating whether or not the message transmission to the receiving service 150 has been successful.

  The message structure analysis unit 112 analyzes the structure of the request message according to the command from the control unit 111 (step S202). Specifically, the message structure analysis unit 112 analyzes the information described in the request message so that it can be acquired for each element.

  Here, the message analysis processing of the message structure analysis unit 112 will be described with reference to FIGS. The message structure analysis unit 112 acquires an element name and a value of the element included in the request message. Then, as shown in FIG. 4, the message structure analysis unit 112 generates a list in which element names and values are associated with each other, and arranges information of the request message. Thereby, the structure of the request message is analyzed. In the example shown in FIG. 4, the value assigned to element A is value 1, the value assigned to element B is value 2, and the value assigned to element C is value 3. Yes, meaning that the value assigned to the element D is the value 4.

  As an example, a case where a message to be transmitted / received is XML will be described. Assume that the request message received by the control unit 111 is an XML message as shown in FIG. Specifically, the message shown in FIG. 5 is a message in which the value “AAAA” is assigned to the element whose element name is “element1”. Similarly, the values “BBBB” to “EEEE” are assigned to the elements “element2” to “element5”. The message structure analysis unit 112 searches for XML using XPath or the like, and acquires the element name of the specific element of XML and the value of the text node. Note that the message analysis method such as XPath is a known technique, and thus detailed description thereof is omitted.

  Then, the message structure analysis unit 112 analyzes the XML message by generating a list in which the element name is associated with the value of the element. Specifically, as illustrated in FIG. 6, the message structure analysis unit 112 generates a list in which the element name “element” is associated with the value “AAAA” assigned to the element. The same applies to the elements “element2” to “element5”.

  Returning to the flowchart of FIG. 3, the control unit 111 determines whether or not the request message has been successfully transmitted (step S203). Specifically, the control unit 111 determines whether or not the transmission of the request message from the message transmission / reception unit 140 to the reception service 150 is successful based on the transmission result. If the control unit 111 receives Done, the message transmission to the receiving service 150 is successful. If the control unit 111 has received an error, message transmission to the receiving service 150 has failed.

  When the message transmission is normally completed (step S203: Yes), the message type determination unit 113 determines the message type of the request message (step S204). The message type determination unit 113 holds an algorithm for determining the message type, and determines the message type based on the algorithm.

  For example, the message type determination unit 113 defines (stores) in advance that the element A among the elements illustrated in FIG. 4 is an element representing the message type. Then, the message type determination unit 113 acquires the value 1 assuming that the value 1 corresponding to the element A is information indicating the message type name. Note that the above message type determination method is merely an example, and other methods may be used to determine the message type.

  Next, the response message creation unit 114 creates a response message based on the request message type (step S205). The response message creation unit 114 transmits the created response message to the control unit 111. The control unit 111 transmits the created response message to the message transmission / reception unit 130 (step S207).

  On the other hand, when message transmission has failed (step S203: No), the response message creation unit 114 creates an error message as a response message regardless of the request message type (step S206). The error message is defined in advance. Specifically, the response message creation unit 114 acquires a message definition for an error message (response message template) from the message definition storage unit 115 and writes the content of the abnormality that has occurred as a value in the response message. That is, the response message creation unit 114 creates a response message based on the transmission result and the request message type. After that, as in the case where the message transmission is normally completed, the response message creation unit 114 transmits the created error message to the control unit 111 as a response message. Then, the control unit 111 transmits an error message to the message transmission / reception unit 130 (step S207). With the above operation, the automatic response creating unit 110 transmits a response message corresponding to the request message to the message transmitting / receiving unit 130.

  Next, the response message creation process of the response message creation unit 114 will be described with reference to the flowchart of FIG. First, the response message creation unit 114 searches the message definition storage unit 115 for a response message definition corresponding to the request message type (step S301).

  As shown in FIG. 8, the message definition storage unit 115 stores response message definitions associated with request message types in advance. In the example of FIG. 8, when the control unit 111 receives a request message having a type A message type, it means that the response message creating unit 114 uses Definition 1 as the definition of the response message. The same applies to request message types B to D. If the message type of the request message received by the control unit 111 does not correspond to any of the preset request message types, the response message creation unit 114 defines the “standard response definition corresponding to the“ other ”message type. "Use. The standard response definition is a general-purpose message definition that is not specialized for a specific sender service 120. Thus, even when the control unit 111 receives a request message of a message type that is not stored in the message definition storage unit 115, the response message creation unit 114 can create a response message using the standard response definition. .

  As an example of the response message definition, the response message definition in the XML message will be described. FIG. 9 is an example of a response message definition in the XML message. As shown in FIG. 9, the response message definition is given to the response message creation unit 114 as a message template.

  The response message creation unit 114 determines whether or not a response message definition corresponding to the message type of the request message received by the control unit 111 is registered in the message definition storage unit 115 (step S302). The determination process is performed by searching whether there is a message type of the request message received by the control unit 111 among the request message types of the message definition storage unit 115.

  When the response message definition corresponding to the request message type is registered (step S302: Yes), the response message creation unit 114 reads the corresponding response message definition (step S303).

  On the other hand, when the response message definition corresponding to the request message type is not registered (step S302: No), the response message creating unit 114 reads the response message definition for standard response (step S304). The response message definition is a message in a format that can be transmitted and received by the transmission side service 120 and the message transmission / reception unit 130. As described above, the response message creation unit 114 uses the response message definition as a response message template.

  After reading the response message definition, the response message creation unit 114 writes necessary data as a value (element value) in the response message definition to create a response message (step S305).

  As an example, a case where a message to be transmitted / received is in XML format will be described. The response message definition associated with a certain message type is given to the response message creation unit 114 as a template of an XML message as shown in FIG. At this time, the response message creation unit 114 writes a dynamic value such as date or time to the text nodes of the elements “element7” and “element8” as necessary. A response message creation process is performed by this writing process. It is also possible to embed a fixed value (“FFF”) in the response message definition in advance, as in the “element6” element. Further, when creating an error message, the response message creating unit 114 may insert the error content in addition to the date and time.

  Although it is only an example to the last, the response message preparation procedure using a simple XML message is demonstrated. In this example, it is assumed that the message definition storage unit 115 stores a list in which request message types and response message definitions are associated as shown in FIG.

  Here, it is assumed that the control unit 111 receives a request message as shown in FIG. In the request message shown in FIG. 11, the value “REQ1” is written in the element “massage type” indicating the request message type. In addition, a value “20121120163104” indicating the transmission time (November 20, 2012, 16:31:04) is written in the element “date” indicating the transmission time of the request message.

  The message type determination unit 113 determines the value “REQ1” of the element “massage type” indicating the request message type as the message type of the request message received by the control unit 111. Then, the response message creation unit 114 refers to the list of the message definition storage unit 115 and searches for a response message definition associated with the request message type “REQ1”. As a result of the search, the response message creating unit 114 acquires the response message definition “RES1” associated with the request message type “REQ1”. Note that the content of the response message definition “RES1” for “REQ1” is as shown in FIG. That is, the value “RES1” is written in advance in the element “massage type”, and no value is written in the element “date” indicating the transmission time of the response message.

  The response message creation unit 114 writes the response message transmission time (or creation time) in the blank element “date” in the obtained response message definition (template). As a result, a response message is created. FIG. 13 shows an example of the response message created. In the response message shown in FIG. 13, the transmission time is written in the element “date” of the response message definition shown in FIG. Specifically, the value “20121120163221” indicating the transmission time (November 20, 2012, 16:32:21) is written in the element “date”. For example, when the transmission side service 120 is a service that requests not only the transmission result of the request message but also the time when the transmission is completed, the service bus device 100 sends a response message as shown in FIG. 13 to the request message. Return it. Thereby, the communication of the transmission side service 120 is normally completed.

(Comparative example)
A service bus device 900 according to a comparative example will be described with reference to FIG. The service bus device 900 according to the comparative example includes message transmission / reception units 930 and 940. When the message transmission / reception unit 930 receives the request message from the transmission side service 120, the message transmission / reception unit 930 transmits the request message to the message transmission / reception unit 940. The message transmission / reception unit 940 transmits the request message to the receiving service 150. Further, the message transmission / reception unit 940 determines whether or not the request message has been normally transmitted, and transmits a transmission result (Done / Error) to the message transmission / reception unit 930. The message transmission / reception unit 930 returns only the received transmission result to the transmission side service 120. For this reason, the transmission side service 120 can receive only the information of the transmission result. Therefore, when the transmission side service 120 requests the return of information other than the transmission result, there is a possibility that the communication is not normally completed.

  On the other hand, the service bus device 100 according to the present embodiment can return a response message having contents corresponding to the request message to the transmission side service 120. Thereby, the communication of the transmission side service 120 is normally completed.

  As described above, according to the configuration of the service bus device 100 according to the present embodiment, the message structure analysis unit 112 analyzes the request message. Further, the message type determination unit 113 determines the request message type based on the analysis result. Then, the response message creation unit 114 creates a response message corresponding to the request message type. Thereby, even if the receiving service 150 does not have a message reply function, a desired response message can be returned to the transmitting service 120 without changing or modifying the service application of the receiving service 150.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, the contents of the request message and the response message are not limited to the contents shown in the above-described embodiment. Further, in the message transmission / reception system shown in FIG. 1, the configuration includes one transmission service 120 and one reception service 150, but the present invention is not limited to this. A plurality of transmission side services 120 and reception side services 150 may be connected to the service bus device 100.

  As shown in FIG. 15, the service bus device according to the present invention includes at least a receiving unit 11 that receives a request message, a transmitting unit 12 that transmits a response message, and a message analyzing unit 13 that analyzes the request message. The message type determination unit 14 that determines the request message type and the response message creation unit 15 that creates a response message according to the message type may be provided. With these configurations, an effect that a response message corresponding to the request message can be returned to the transmission side service 120 can be exhibited.

  Furthermore, the arbitrary processing of the service bus device 100 described above can be realized by causing a CPU (Central Processing Unit) to execute a computer program. In this case, the computer program can be stored using various types of non-transitory computer readable media and supplied to the computer. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash memory, RAM (random access memory)) are included. The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

  In addition to the case where the function of the above-described embodiment is realized by the computer executing the program that realizes the function of the above-described embodiment, this program is not limited to the OS ( A case where the functions of the above-described embodiment are realized in cooperation with an operating system or application software is also included in the embodiment of the present invention. Furthermore, the present invention is also applicable to the case where the functions of the above-described embodiment are realized by performing all or part of the processing of the program by a function expansion board inserted into the computer or a function expansion unit connected to the computer. It is included in the embodiment.

DESCRIPTION OF SYMBOLS 10,100 Service bus apparatus 11 Reception part 12 Transmission part 13 Message analysis part 14 Message type determination part 15 Response message creation part 110 Automatic response creation part 111 Control part 112 Message structure analysis part 113 Message type determination part 114 Response message creation part 115 Message definition storage unit 120 Transmission side service 130 Message transmission / reception unit 130, 140 Message transmission / reception unit 140 Message transmission / reception unit 150 Reception side service

Claims (6)

A service bus device that connects a transmitting system that transmits a request message and a receiving system that receives the request message,
Receiving means for receiving the request message from the sender system;
Message analysis means for analyzing the request message;
Message type determination means for determining a message type indicating the type of the request message based on the analysis result;
Response message creating means for creating a response message according to the message type of the request message;
Transmitting means for transmitting the response message to the transmitting system;
Message definition storage means for storing message definitions of the plurality of response messages in association with a plurality of message types, and
The response message creating means refers to the message definition storage means, creates the response message using the message definition of the response message corresponding to the message type determined by the message type determining means,
The message definition storage means further stores a general message definition,
The response message creating unit creates the response message using the general message definition when the message type determined by the message type determining unit is not stored in the message definition storage unit. . The message definition stored in the message definition storage means includes an element in which a value can be written,
The response message creation unit, the elements included in the message definition by writing a predetermined value, the service bus device according to claim 1 to create the response message. 3. The service bus according to claim 1, wherein the message type determination unit acquires a value of an element related to a message type among elements of the request message, and determines a message type of the request message based on the value. apparatus. A service bus device control method for connecting a transmitting side system for transmitting a request message and a receiving side system for receiving the request message,
Receiving the request message from the sender system;
Analyzing the request message;
Determining a message type indicating a type of the request message based on an analysis result;
Creating a response message according to the message type of the request message;
Sending the response message to the sending system;
Equipped with a,
The step of creating the response message refers to a stored message definition, creates a response message corresponding to the message type,
When the message type is not included in the stored message definition, a service bus device control method for creating the response message using a general message definition. A sending system that sends the request message;
A receiving system for receiving the request message;
A message transmission / reception system comprising: a service bus device connecting the transmission side system and the reception side system;
Receiving means for receiving the request message from the sender system;
Message analysis means for analyzing the request message;
Message type determination means for determining a message type indicating the type of the request message based on the analysis result;
Response message creating means for creating a response message according to the message type of the request message;
Transmitting means for transmitting the response message to the transmitting system;
Message definition storage means for storing message definitions of the plurality of response messages in association with a plurality of message types, and
The response message creating means refers to the message definition storage means, creates the response message using the message definition of the response message corresponding to the message type determined by the message type determining means,
The message definition storage means further stores a general message definition,
The response message creating means creates a response message using the general message definition when the message type determined by the message type determining means is not stored in the message definition storage means. . On the computer,
Receiving a request message from the sending system;
Analyzing the request message;
Determining a message type indicating the type of the request message based on the analysis result; and
Creating a response message according to the message type of the request message;
Sending the response message to the sending system;
A program to be executed by the,
In the step of creating the response message, a response message corresponding to the message type is created by referring to the stored message definition.
If the message type is not included in the stored message definition, a program for generating the response message using a general message definition.

Images