JPS59108156A - Indirect request control method for remote file transfer processing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a method for controlling file transfer between nodes in a distributed network system, and in particular to a method for controlling file transfer between remote nodes under user management. This invention relates to a file transfer control method that is executed through indirect control.

Technical Background In a distributed network system, when a user performs data processing using a file located on a remote node, there is a related need to perform data processing using a file located on another remote node. It is often necessary to use files simultaneously.

In this case, a process is performed to transfer copies of the necessary files between nodes. In this way, when executing communication processing that is mainly performed between two nodes A and B that are located remotely from the user's perspective, the communication processing is managed and controlled by the user. , it was necessary to perform data communication via the user node.

FIG. 1 shows an overview of conventional remote-to-remote file transfer control controlled by a user. In the figure, 1 is a user node, 1α is a transfer control function, 2 is a communication processing provider node A, 3 is a communication processing provider node B, and 4 is a file transferred from node A. When a user node attempts to transfer a file from remote node A to node B, it first transfers the file from node A to the user node, and then from the user node to node B. This is necessary.

Therefore, user node A secures a buffer area within the node, successfully executes the file transfer from node A to the buffer of the user node, confirms the completion of the transfer, and then The file transfer from the buffer of node B to node B is executed normally. Processing such as communication control, buffer management, and synchronization in these two-step transfers is as follows:
Everything is managed and controlled under the responsibility of the user node.

Therefore, the management control at the user node becomes complicated, and two-step data communication of 8-user-B is required, resulting in an increase in cost.

OBJECTS AND STRUCTURE OF THE INVENTION The present invention solves the problems in the conventional method described above by (1) maximizing the use of the file transfer function via the existing direct route between the two nodes A and B; (11) Both the user node and the communication processing party node A,
, B. Sharing the creation of management control information related to communication processing between two parties, 1 to 1. To improve the interface of user nodes, (to eliminate wasteful data communication via town user nodes, to save money) In a distributed network system, each of the multiple nodes composing the system is equipped with a file transfer indirect request function unit and a file transfer requested processing function unit, and the user can When a node instructs a file transfer between two remote nodes, it activates the file transfer indirect request function section of its own node, thereby instructing one of the two remote nodes to perform the file transfer requested processing function of the remote node. sends a file transfer processing indirect request message consisting of primary interface information for activating the remote node and secondary interface information for instructing at a sophisticated level the contents of the file transfer that the remote node should perform between the remote node and the other remote node; , the file transfer requested processing function unit of the mote node that receives the indirect file transfer processing request message identifies the above-mentioned next interface information and activates the existing file transfer function, and also starts the existing file transfer function based on the secondary interface information. Creates detailed file transfer control information, executes file transfer processing according to the information, and notifies the indirect file transfer request function section of the user node of the result, and the indirect file transfer request function section sends the file from the remote node to When the transfer result is notified,
The feature is that the operation is controlled to end.

FIG. 2 is a diagram explaining the principle of the system of the present invention. In the figure, numbers 1 to 4 are the same as in Figure 1, except that user node 1 functions as an indirect requesting node for file transfer processing, and user node 2 functions as an indirect requesting node for file transfer processing.
Node A functions as a communication processing host node for the file transfer parties, and node B functions as a communication processing provider node for the file transfer parties. 5 is a control function of the user node, 6 is a control function of node A, and 7 is primary interface information 7a and secondary interface information 7b.
This shows an indirect request message for file transfer processing, including:

The user node 1 creates an indirect file transfer request processing message 7 using the control function 5 and requests the node A to transfer the necessary file from the node A to the node B.

Node A's control function 6 uses some of the interface information in the message to establish the existing file transfer processing function that its own node is in charge of, and specifies the specifications expressed at the advanced level indicated by the secondary interface information. level is converted into detailed file transfer control information, executes file transfer processing with node B, and notifies the user node of the result.

In this way, the user node only controls the indirect request and result acceptance of the file transfer process performed between nodes A and B, and the execution entity is the requesting or mote node.

FIG. 3 is a system configuration diagram of an embodiment of the present invention.

In the figure, 8 is the indirect request side node for file transfer processing, 9 is the file transfer indirect request function capital, 10 is the file transfer processing indirect request message to be sent, 11 is the communication control interface, and 12 is the node requested to perform the file transfer processing. , 13 is a communication control node, 14 is a received file transfer processing indirect request message, 15 is a message analysis unit, 16 is a file transfer requested processing function unit, 17 is a file transfer control information table, 18 is a file, and 19 is a message 20 indicates a result notification signal line, and 21 indicates a file data transfer line.

In operation, when the indirect request function section 9 is activated in the file transfer indirect request side node 8, a session is first established with the request destination node 12 to enable communication. Next, a file transfer processing indirect request message 10 is sent to the node 12.

File transfer processing indirect request message 10 includes some interface information including a command for requesting file transfer processing, and when the destination node executes file transfer,
There are 7 times from the secondary interface/report used as part of the file transfer control information table 17.

Figure 4 shows indirect request message ') 10 or 14,
An example of the control information table 17 is shown.

The message ') 10 can be written in the job control statement JOL format. In this case, interface information that instructs file transfer processing is defined by the FD statement.

Message 10, communication control interface 11゜13
' (received message sent to the node 12 via the word line 19 via il-) is analyzed by the message analysis section 15, and when the file transfer processing indirect request command is identified, the file transfer requested processing function section 16 is to start. The message analysis unit 15 can be realized as a reader or initiator function, for example.

The requested processing function 16 first creates a detailed file transfer control information table 17 as shown in FIG. 4 using the secondary interface information in the message. Next, the existing file transfer process begins, establishing a session with the other node to which the file should be transferred, performing remote security checks, starting file exclusive use, remote file identification, transfer direction recognition, file common attribute confirmation, etc. Performs initialization processing. Note that the security check and whether the file is exclusive or shared are established in advance before requesting the file transfer.

After the initialization process is completed, the file 18 is transferred.

This file transfer process is executed under the responsibility of the node 12, and the indirect requesting node 8 has no involvement in the process.
1. When the file transfer is completed, termination processing such as returning the used resources is performed, and the session is released. At this time, the indirect request function section 9 of the node 8 is notified of the success or failure of the file transfer, that is, whether it has ended normally or abnormally, via the signal 720'Fc. After the indirect request function unit 9 confirms all the results of the indirectly requested file transfer, it releases the session with the node 12 and completes the process. In this way, the completion of the local security check, local processing such as local file identification, and existing file transfer processing, which are indicated by dotted lines in the indirect request function section 9, are reliably performed by the node 12.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

■The communication processing function that already exists between two remote parties can be used as is, and the burden of management control on a third party can be reduced.

■ By increasing the sophistication of the secondary interface information created by a third party, A, who is in charge of communication processing between A and 8, details the original secondary interface information.
It is possible to increase the degree of freedom in communication processing between 8 and 8.

■ Data is transferred without going through a third party, reducing communication costs.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the conventional file transfer method, Fig. 2 is an explanatory diagram of the method of the present invention, Fig. 3 is a configuration diagram of the embodiment system,
FIG. 4 is an explanatory diagram showing an example of a table of file transfer processing request messages and file transfer control information used in the embodiment. In the figure, 1 is a user node, 2 and 3 are remote nodes for all file transfer lines, 4 is a file, 8 is an indirect requesting node, 9 is a file transfer indirect request function unit, and 10.14
Reference numeral 15 indicates a file transfer processing indirect request message, 15 indicates an analysis section, 16 indicates a file transfer requested processing 1 functional section, 17 indicates a file transfer control information table, and 18 indicates a file. Patent Applicant Fujitsu Limited (4 others) Representative Patent Attorney Hiroshi Fumi (1 other person) fl η ′″rz Country Su3kl t-4-Continuation of page 1 ■Applicant NEC Co., Ltd. 5-33-1-1 Shiba, Minato-ku, Tokyo Applicant Hitachi Ltd. 5-1 Marunouchi-chome, Chiyoda-ku, Tokyo Applicant Oki Electric Industry Co., Ltd. 1-7 Toranomon, Minato-ku, Tokyo No. 12

Claims (1)

[Claims] In a distributed network system, each of the plurality of nodes constituting the system is equipped with an indirect file transfer request function unit and a file transfer requested processing function unit, and a user can transfer files between two remote nodes from the own node. When instructing the transfer, primary interface information for activating the file transfer indirect request function section of the own node and thereby activating the file transfer requested processing function section of the seven remote nodes for one of the two remote nodes; The remote node sends a file transfer processing indirect request message consisting of secondary interface information that instructs at a sophisticated level the contents of the file transfer to be performed between the remote node and the other remote node, and sends the file transfer processing indirect request message. The receiving or mote node file transfer requested processing function unit identifies the above-mentioned secondary interface information and activates the existing file transfer function, and also creates detailed file transfer control information based on the secondary interface information. , executes the file transfer process according to the instruction, and notifies the indirect file transfer request function section of the user node of the result, and the indirect file transfer request function section takes action when notified of the file transfer result from the remote node. An indirect request control method for file transfer processing between remotes, characterized in that the method is controlled to terminate the process.