JP4759418B2 - Message recovery system and recovery method - Google Patents

Description

  The present invention relates to a message recovery technique in an information processing apparatus that mutually transmits and receives messages, and more particularly to a message recovery technique that can recover a lost message after message distribution.

  With regard to inter-system cooperation technology that links systems formed using information processing apparatuses, various standardization technologies have been promoted in order to improve inter-system connectivity. A typical example is a Web service or SOAP (Simple Object Access Protocol).

On the other hand, as a guarantee technique for guaranteeing a message distributed between the linked systems, a technique is known in which a transmission operation is continued until a reception confirmation signal is received. A typical example is WS-R (WS-Reliability) (see Non-Patent Document 1).
Web Services Reliable Messaging TC, WS-Reliability 1.1, OASIS Standard, 15 November 2004 / p.19 ll.532-561

  As described above, the conventional message delivery guarantee technique is a technique that continues the transmission operation until the reception confirmation signal is received, and is not a technique that considers message loss after message delivery. For this reason, when a message is lost on the receiving side after message delivery, the lost message cannot be recovered.

The present invention has been made in view of these problems. When there is a possibility that a received message including data may be lost, a technique for recovering a message based on a list of transmission sources while recovering a processing history is disclosed. Is to provide.

  In order to solve the above problems, the present invention employs the following means.

A message relay device that receives a message transmitted by the message transmission device and transmits the received message to the message reception device, and the message relay device indicates a failure notification that indicates the occurrence of a failure when the failure occurs in the relay device; Is transmitted to the message transmitting device and the message receiving device, and in response to the failure notification, the message reception history from the failure relay device transmitted by the message receiver to the failure relay device is determined to be a failure. The transmission history of the generation relay device is used, and the message transmission history transmitted from the message transmission device to the failure occurrence relay device is used as the reception history of the relay device. In addition, the message is recovered by requesting retransmission of the message.

Since the present invention has the above-described configuration, when there is a possibility that a received message has been lost, the processing history can be recovered and the message can be recovered based on the transmission source list .

  Hereinafter, the best embodiment will be described with reference to the accompanying drawings. FIG. 1 is a diagram for explaining a message recovery system.

  The message recovery system includes a transmitting device 110 that transmits a message, a relay device 120 that relays the transmitted message, a receiving device 130 that receives the message, and a communication network 140 that connects these devices. The transmitting device 110, the relay device 120, and the receiving device 130 are each configured with a computer (computer). In addition, the computers constituting the transmission device 110, the relay device 120, and the reception device 130 include display units 118, 128, and 137 and storage units 119, 129, and 138, respectively. The processing units constituting the transmission device 110, the relay device 120, and the reception device 130 can be realized by a program. In this case, the program is stored in the storage units 119, 129, and 138. The processing units can be realized by hardware.

  The transmission device 110 includes a transmission application 111 that is a program for performing a business process involving transmission, and a transmission unit 112. The transmission unit 112 also includes a failure notification reception unit 114 that receives a failure notification, a transmission history correction unit 115 that corrects a transmission history, a message guarantee unit 113 that includes a retransmission unit 116 that retransmits a message, and an actual transmission. The transmission basic unit 117 is provided.

  The relay device 120 includes a relay unit 121 including a message guarantee unit 122 and a relay basic unit 127 that actually relays, and the relay basic unit 127 requests a failure notification transmission unit 123 that transmits a failure notification and a reception history. A reception history request unit 124, a transmission / reception history recovery unit 125 that recovers a transmission / reception history, a message guarantee unit 122 including a retransmission request unit 126 that requests retransmission, and a relay basic unit 127 that actually performs relaying.

  The reception device 130 includes a reception application 131 that performs a business process involving reception, and a reception unit 132. The reception unit 132 includes a message guarantee unit 133 including a reception basic unit 136 that actually performs reception, a failure notification reception unit 134 that receives a failure notification, and a reception history response unit 135 that responds a reception history.

  Each computer that constitutes the transmission device 110, the relay device 120, and the reception device 130 includes the storage units 119, 129, and 138 as described above, and the processing unit that constitutes each computer is a program stored in the storage unit. Works according to. Each storage unit stores data, programs, and the like as files so that they can be accessed from the devices constituting each unit. The transmission device 110, the relay device 120, and the reception device 130 each include a communication device that transmits / receives data and files to / from other devices via a communication network.

  In the present embodiment, it is assumed that the transmission device 110 is a Web portal site (A and D), the relay device 120 is a relay device (B and E), and the reception device is a service providing device (C and F). The web portal site, the relay device, and the service providing device may be singular or plural.

  It is preferable that the computer further includes display units 118, 128, and 137 that display an input device that receives an instruction from a user, a processing result of the processing device, and the like. As described above, the functions of the respective units of the computer are realized by the processing units accessing and operating data and files in the storage unit according to programs.

  Note that the transmission device 110 is preferably a computer having a processing capability for transmitting a message to the plurality of relay devices 120. Specifically, it is desirable to use a large computer and a high-performance workstation. The relay device 120 is preferably a computer having processing capability for receiving messages from the plurality of transmission devices 110 and transmitting the messages to the plurality of reception devices 130. Specifically, it is desirable to use a large computer and a high-performance workstation. The receiving device 130 is preferably a computer having a processing capability for receiving messages from the plurality of relay devices 110. Specifically, it is desirable to use a large computer and a high-performance workstation. The communication network may be a transmission medium that transmits information to other information processing apparatuses. In addition, a terminal that transmits a message requesting processing to the message transmitting apparatus is connected to the network.

  Next, the processing operation of the message recovery system according to the present exemplary embodiment will be described with reference to FIGS. 2 is a diagram for explaining the outline of the processing, FIG. 3 is a diagram for explaining the details of the reception history request (step 222) in FIG. 2, and FIG. 4 is the details of the transmission / reception history history request (step 223) in FIG. FIG. 5 is a diagram for explaining the details of the retransmission request (step 224) in FIG.

  FIG. 6 shows a transmission history 600 of the Web portal site A before the failure of the relay device B. The transmission history 600 includes a message ID 601, a transmission destination ID 602, and a transmission state 603. FIG. 7 shows a reception history 700 of the relay device B before the failure of the relay device B. The reception history 700 includes a message ID 701, a transmission source ID 702, and a reception state 703. FIG. 8 shows an example of a transmission history 800 of the relay device B before the failure of the relay device B. The transmission history 800 includes a message ID 801, a transmission destination ID 802, and a transmission state 803. FIG. 9 shows a reception history 900 of the service providing apparatus C before the failure of the relay apparatus B. The reception history 900 includes a message ID 901, a transmission source ID 902, and a reception state 903. The reception history and transmission history of the relay device shown in FIGS. 7 and 8 are lost when a failure occurs in the relay device.

  FIG. 10 shows a transmission history 600 of the Web portal site A after the failure of the relay device B. FIG. 11 shows a reception history 900 of the service providing apparatus C after the failure of the relay apparatus B. FIG. 12 shows the reception history 700 of the relay apparatus B after the reception history is added. FIG. 13 shows the transmission history 800 of the relay apparatus B after adding the transmission history. FIG. 14 shows a transmission history 600 of the Web portal site apparatus A after the transmission history correction. In these drawings, “Done” indicating the transmission or reception state means completion of transmission or reception, and “Not done” means that transmission / reception is not completed.

  First, the failure notification transmission process (step 221) of the relay device 120 in FIG. 2 will be described. When the failure notification transmission unit 113 of the relay device 120 detects that there is a possibility of data loss in the relay unit 121, the failure notification reception unit 114 of the transmission device 110 receives the fact that there is a possibility of data loss. Notify at least one of the failure notification receivers 134 of the device 130.

  For example, when the transmission device 110 is the Web portal site A or D, the failure notification transmission unit 113 of the relay device B indicates that there is a possibility of data loss, and the failure notification reception unit of the Web portal site device A or D 114 and at least one of the failure notification receivers 134 of the service providing device C or F that is the receiving device.

  Next, details of the reception history request process (step 222) shown in FIG. 2 will be described with reference to FIG. First, the reception history request unit 124 of the relay apparatus B acquires the list 1100 of the reception apparatus 130 as the transmission destination list 1100. In the example of the Web portal site, the reception history request unit 124 of the relay device B acquires the service providing device C and the service providing device F, which are receiving devices, as the transmission destination list 1100 (step 301). Next, the reception history request unit 124 of the relay apparatus B substitutes 0 for the transmission destination number n and the number of transmission destinations for the transmission destination number d (step 302). Next, the reception history request unit 124 of the relay apparatus B compares the transmission destination number n with the transmission destination number d. If the transmission destination number n is smaller than the transmission destination number d, the process proceeds to step 304; The history request is terminated (step 303). Next, the reception history request unit 124 of the relay device B transmits the reception history request to the reception history response unit 135 of the receiving device (for example, the receiving device C) that is the (n + 1) th transmission destination (step 304).

  The reception history response unit 135 of the reception device C receives the reception history request from the reception history request unit 124 of the relay device B (step 311). Next, the reception history response unit 135 of the reception device C extracts the reception history from the relay device B from the accumulated reception history 900 (FIG. 9) (step 312). Next, the reception history response unit 135 of the reception device C transmits a reception history response generated based on the extracted reception history to the reception history request unit 124 of the relay device B (step 313).

  The reception history request unit 124 of the relay device B receives the reception history response from the reception history response unit 135 of the receiving device C that is the (n + 1) th transmission destination (step 305). Next, the reception history request unit 124 of the relay apparatus B adds 1 to the transmission destination number n, and proceeds to step 303 (step 306).

  Note that the above processing may be applied to the transmission device A or D in the same manner to acquire the transmission history of the transmission device A or D for the relay device B.

  Next, details of the transmission / reception history recovery processing (step 223) shown in FIG. 2 will be described with reference to FIG. First, the transmission / reception history recovery unit 125 of the relay device B adds the transmission history to the reception device C (obtained from the reception device C in step 222) to the transmission history 800 (FIG. 13) (step 401). Next, the transmission / reception history recovery unit 125 of the relay device B adds the reception history from the transmission device A to the reception history 700 (FIG. 12) (step 402).

  Next, details of the retransmission request process (step 224) shown in FIG. 2 will be described with reference to FIG.

  First, the retransmission request unit 126 of the relay apparatus B acquires the transmission source list 1000 (Web portal site apparatuses A and B) as a list of the transmission apparatus 110 (step 501). Next, the retransmission request unit 126 of the relay apparatus B substitutes 0 for the transmission source number n and the transmission source number for the transmission source number s (step 502). Next, the retransmission request unit 126 of the relay apparatus B compares the transmission source number n with the transmission source number s. If the transmission source number n is smaller than the transmission source number s, the process proceeds to step 504. Is terminated (step 503). Next, the retransmission request unit 126 of the relay apparatus B transmits a retransmission request to the retransmission unit 116 of the transmission apparatus 110 (Web portal site A) that is the (n + 1) th transmission source (step 504). Next, the retransmission request unit 126 of the relay apparatus B adds 1 to the transmission source number n, and proceeds to step 503 (step 505).

  Next, processing after the retransmission request reception processing (step 212) in FIG. 2 will be described. First, the retransmission unit 116 of the transmission device 110 receives a retransmission request from the retransmission request unit 126 of the relay device B (step 212). Next, the transmission history correction unit 115 of the transmission device 110 corrects the transmission history to the relay device B in the transmission history 600 (FIG. 10) (changes the transmission status “completed” to “uncompleted” in the transmission history). (Step 213). Next, the retransmission unit 116 of the transmission device 110 starts retransmission based on the corrected transmission history 600.

  In the example of the Web portal site, the retransmission unit 116 of the Web portal site apparatus A that is the transmission apparatus 110 starts retransmission based on the corrected transmission history 600 (FIG. 14) (step 214).

As described above, according to the present embodiment, for example, when the relay apparatus B, which is a computer constituting the system, detects that there is a possibility that a message has been lost, information indicating that the message has been lost is displayed. Notify other computers and obtain processing history of other computers. In addition, the processing history is recovered based on the acquired history, and the lost message is recovered by requesting another computer (for example, the transmitting apparatus A) to retransmit the message based on the transmission source list. be able to .

  For example, when a failure occurs in the relay device B, the relay device B requests the reception device C to transmit a reception history that is a history of messages received from the relay device B, and the received reception history is transmitted to the relay device B. Stored as transmission history 800 (FIG. 13).

  Further, the relay device B requests the transmission device A for a transmission history that is a history of the message transmitted to the relay device B, and stores the transmitted transmission history as the reception history 700 (FIG. 12) of the relay device B.

  Next, the relay apparatus B identifies the lost message based on the transmission history 800 and the reception history 700, and requests the transmission apparatus A to retransmit the identified message. This makes it possible to recover lost messages. Note that the transmitting apparatus A resends the message after modifying the flag “completed” indicating the transmission state of the message requested to be retransmitted to “uncompleted” (modified from FIG. 10 to FIG. 14).

  Note that the transmission history of the transmission device A to the relay device B can be the reception history stored on the relay device B side. Further, although a Web portal site is described as an example of a transmission device and a service providing device is an example of a reception device, the present invention can also be applied to, for example, corporate information devices in industries such as finance, manufacturing, distribution, public works, or communication.

As described above, according to the present embodiment, when there is a possibility that a received message including data or the like has been lost, the other information processing apparatus is notified that the message may have been lost, and the other By acquiring the processing history of the information processing apparatus, the lost processing history can be recovered and the message can be recovered by requesting retransmission of the message based on the source list . In addition, the data recovery time can be minimized and data processing can be completed promptly.

The figure explaining a message recovery system. The figure explaining the outline | summary of a recovery process. The figure explaining the detail of the reception log | history request | requirement (step 222) in FIG. The figure explaining the detail of the transmission / reception log history request | requirement (step 223) in FIG. The figure explaining the detail of the resending request | requirement (step 224) in FIG. The figure which shows the transmission log | history 600 before the relay apparatus B failure | occurrence | production of Web portal site A. FIG. The figure which shows the reception log | history 700 of the relay apparatus B before relay apparatus B failure occurrence. The figure which shows the transmission log | history 800 of the relay apparatus B before relay apparatus B failure occurrence. The figure which shows the reception log | history 900 before the relay apparatus B failure of the service provision apparatus C. FIG. The figure which shows the transmission log | history 600 after the failure of the relay apparatus B of Web portal site A. FIG. The figure which shows the reception log | history 900 after the failure of the relay apparatus B of the service provision apparatus C. FIG. The figure which shows the reception log | history 700 after the reception log | history addition of the relay apparatus B. FIG. The figure which shows the transmission history 800 of the relay apparatus B after transmission history addition. The figure which shows the transmission history 600 of the Web portal site apparatus A after transmission history correction.

Explanation of symbols

110 Transmitter (Web portal site)
111 transmission application 112 transmission unit 113 message guarantee unit 114 failure notification reception unit 115 transmission history correction unit 116 retransmission unit 117 transmission basic unit 120 relay device 121 relay unit 122 message guarantee unit 123 failure notification transmission unit 124 reception history request unit 125 transmission / reception history Recovery unit 126 Retransmission request unit 127 Relay basic unit 130 Receiving device (service providing device)
131 reception application 132 reception unit 133 message guarantee unit 134 failure notification reception unit 135 reception history response unit 136 reception basic unit 140 communication network

Claims (14)

A message relay device that receives a message transmitted by a message transmission device and transmits the received message to the message reception device;
The message relay device includes a failure notification transmission unit that transmits a failure notification indicating the occurrence of a failure to the message transmission device and the message reception device when a failure occurs in the relay device,
In response to the failure notification, the message reception history from the failure occurrence relay device transmitted by the message reception device to the failure occurrence relay device is set as the transmission history of the failure occurrence relay device,
While recovering the history as the message transmission history transmitted by the message transmission device to the failure occurrence relay device as a reception history of the relay device,
A message recovery system in an information processing apparatus, wherein a message is requested by requesting retransmission of a message based on a source list which is a list of the message transmission apparatuses. The message recovery system of claim 1, wherein
A message recovery system, wherein a message transmission system corrects a transmission history of a message requested to be retransmitted from transmitted to untransmitted when receiving a signal requesting retransmission of the message from the message relay device. The message recovery system of claim 1, wherein
A message recovery system comprising a plurality of message transmitting devices, message relay devices, and message receiving devices, each of which is connected to each other via a network. The message recovery system of claim 3.
A message recovery system, wherein a terminal that transmits a message requesting processing to a message transmitting apparatus is connected to the network. The message recovery system of claim 1, wherein
The message relay device includes a memory that stores a message transmission history that is a history of transmitting a received message to the message reception device, and a message reception history that is a history received from the message transmission device. Message recovery system. The message recovery system of claim 3.
A message recovery system comprising a plurality of message transmission devices connected via the network, wherein the message relay device transmits a failure notification to each message transmission device. The message recovery system of claim 3.
A message recovery system comprising a plurality of message reception devices connected via the network, wherein the message relay device transmits a failure notification to each message reception device. Receiving the message transmitted by the message transmitting device at the message relay device, and transmitting the received message to the message receiving device;
When a failure occurs in the message relay device, sending a failure notification indicating the occurrence of the failure to the message transmitting device and the message receiving device;
In response to the failure notification, the message reception history from the failure occurrence relay device transmitted by the message reception device to the failure occurrence relay device is set as the transmission history of the failure occurrence relay device,
While recovering the history as the message transmission history transmitted by the message transmission device to the failure occurrence relay device as a reception history of the relay device,
A message recovery method in an information processing apparatus, comprising: a step of requesting retransmission of a message and recovering a message based on a source list which is a list of the message transmission apparatuses. The message recovery method according to claim 8.
A message recovery method, wherein a message transmission device that has received a signal requesting retransmission of a message from a message relay device corrects the transmission history of the message requested to be retransmitted from transmission completion to transmission completion. The message recovery method according to claim 8.
A message recovery method comprising a plurality of the message transmitting device, the message relay device, and the message receiving device, which are connected to each other via a network. The message recovery method according to claim 10.
The network includes a terminal operated by a user, and transmits a message requesting processing to a message transmitting apparatus via the terminal. The message recovery method according to claim 8.
The message relay device comprises a memory for storing a message transmission history that is a history transmitted to a message receiving device and a message reception history that is a history received from the message transmitting device. The message recovery method according to claim 10.
A message recovery method, wherein the message relay device transmits a failure notification to each message transmitting device. The message recovery method according to claim 10.
The message recovery method, wherein the message relay device transmits a failure notification to each message receiving device.

Images