JP4001772B2 - File transfer system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
When transferring a file from one terminal to an arbitrary general-purpose machine via a general-purpose server on a network, the present invention is unaware of the operator operating the terminal and the state of the general-purpose server that uses a preset schedule as a transfer path. However, the present invention relates to a technology that makes file transfer succeed with high probability.
[0002]
[Prior art]
FIG. 1 shows an example of a conventional file transfer system. In the figure, 1 is a terminal that is a file transfer source, 2 is a general-purpose machine that is a file transfer destination, 3 is a network, and 4 and 5 are on the network. General-purpose servers (A, B). Here, the terminal 1, the destination general-purpose machine 2, and the general-purpose servers A4, B5 are all connected to the network 3 at all times, the terminal 1 can be connected to the general-purpose servers 4A, 5B, and the destination general-purpose machine 2 is also connected to the general-purpose server A4. , 5B can be connected.
[0003]
In the above configuration, when transferring a file from the terminal 1 to the general-purpose machine 2 in accordance with the operation of the operator, the operator selects one of the general-purpose servers 4A and 5B, for example, 4A on the terminal 1, and the selected general-purpose server The file is transferred to the general-purpose machine 2 by transmitting the file to 4A and instructing the general-purpose server 4A to transfer the file.
[0004]
In addition, when file transfer is performed from the terminal 1 to the general-purpose machine 2 according to a preset schedule (file transfer by specifying a date and time in advance), the general-purpose servers 4A and 5B selected in advance in the schedule (scenario) The file is transferred to the general-purpose machine 2 by transmitting the file to any one of them, for example, 4A, and instructing the general-purpose server 4A to transfer the file.
[0005]
[Problems to be solved by the invention]
However, in such a conventional system, when the general-purpose server selected by the operator cannot perform file transfer, another general-purpose server, for example, 5B is selected again, and the selected general-purpose server is selected. If a file must be sent to 5B and the general-purpose server 5B must be instructed to transfer the file, and the general-purpose server selected in advance in the schedule cannot transfer the file, a transfer error occurs. There was a problem that the scenario was interrupted by.
[0006]
The present invention makes it possible to perform file transfer with a high probability only by designating a transfer destination general-purpose machine without being aware of the state of a general-purpose server whose transfer route is determined by an operator who operates the terminal or a preset schedule. Objective.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a file transfer system for transferring a file from one terminal to an arbitrary general-purpose machine via a general-purpose server on a network, wherein the one terminal is a general-purpose machine serving as a file transfer destination Storage means for storing at least two general-purpose servers that can be used for file transfer to the general-purpose machine each time, and when the file transfer to a predetermined general-purpose machine is instructed by an operator or a preset schedule, the storage means The file transmission means for transmitting the file to all the general-purpose servers stored corresponding to the predetermined general-purpose machine and the general-purpose server that has transmitted the file are instructed to transfer the file to the predetermined general-purpose machine. Determines the success / failure of file transfer by the transfer instruction means and the general-purpose server that instructs file transfer A transfer result judging means, an instruction changing means for switching a general-purpose server instructing file transfer in the transfer instructing means when the file transfer is unsuccessful, and a file transfer by all the general-purpose servers that have transmitted the file when the file transfer is successful or And deletion instruction means for instructing deletion of the file to all the general-purpose servers that have transmitted the file.
[0008]
According to the above configuration, when transferring a file to a general-purpose machine via a general-purpose server, it is possible to determine the state of the general-purpose server, and automatically select a general-purpose server that can be transferred, which can be operated by an operator who operates the terminal. Therefore, the probability of failure in file transfer according to the schedule can be reduced.
[0009]
Note that the switching of the general-purpose servers instructing the file transfer may be performed when the same general-purpose server is repeatedly given a predetermined number of times and fails.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 shows an example of an embodiment of the file transfer system of the present invention. In the figure, the same components as those in the conventional example are denoted by the same reference numerals. That is, 2 is a general-purpose machine, 3 is a network, 4 and 5 are general-purpose servers (A, B), and 10 is a terminal.
[0011]
The terminal 10 includes a computer including a known CPU, a memory, an input unit, a display unit, and the like, and the following units configured by a program or hardware thereof: a storage unit 11, a file transmission unit 12, a transfer instruction unit 13, and the like. , A transfer result determination unit 14, an instruction change unit 15, and a deletion instruction unit 16.
[0012]
The storage unit 11 stores at least two general-purpose servers that can be used for file transfer to the general-purpose machine for each general-purpose machine serving as a file transfer destination. When the file transmission unit 12 is instructed to transfer a file to a predetermined general-purpose machine by an operator or a preset schedule, the file transmission unit 12 stores the file in all the general-purpose servers stored in the storage unit 11 corresponding to the predetermined general-purpose machine. Send.
[0013]
The transfer instruction unit 13 instructs one of the general-purpose servers that have transmitted the file to transfer the file to a predetermined general-purpose machine. It should be noted that various general-purpose servers can be instructed. However, among a plurality of general-purpose servers stored in the storage unit 11 corresponding to a predetermined general-purpose machine, it may be simply specified in ascending order of addresses. Or you may instruct | indicate according to the priority given previously.
[0014]
The transfer result determination unit 14 determines the success / failure of the file transfer by the general-purpose server that has instructed the file transfer. This determination is performed by not receiving any notification from the general-purpose server for a certain time or more, or receiving a transfer impossible notification or a transfer end notification described later.
[0015]
If the file transfer fails, however, the instruction change unit 15 here gives a general instruction to instruct the file transfer in the transfer instruction unit 13 if the same general server is repeatedly given a predetermined number of times and the file transfer fails. Switch servers.
[0016]
When the file transfer is successful or when the file transfer by all the general-purpose servers that have transmitted the files has failed, the delete instruction means 16 instructs all the general-purpose servers that have transmitted the files to delete the files.
[0017]
Here, like the terminal 1 in FIG. 1, the terminal 10 is always connected to the network 3 and can be connected to the general-purpose servers 4A and 5B. The general-purpose servers 4A and 5B always manage whether or not the file transfer can be relayed. When the file transfer is instructed, the general-purpose servers 4A and 5B notify the transfer impossible if the file transfer cannot be relayed. When file transfer is completed, the end of transfer shall be notified.
[0018]
FIG. 3 is a flowchart showing the operation of the program that implements the terminal 10, where i is the number of a general-purpose server that can be used for file transfer to a specific general-purpose machine, M is the final value of i, j Indicates the number of file transfer instructions to the same general-purpose server, and N indicates the maximum value of j.
[0019]
4 and 5 show the file transfer according to the present invention, and the operation will be described below. Here, the storage unit 11 stores general-purpose servers A4 and B5 as general-purpose servers that can be used for file transfer to the general-purpose machine 2.
[0020]
When the operator instructs the terminal 10 to transfer file a to the general-purpose machine 2 (s1), the terminal 10 is first used by the file transmission means 12 for file transfer to the general-purpose machine 2 stored in the storage means 11. File a is transmitted to a possible general-purpose server, here, general-purpose servers A4 and B5 (s2). Next, the terminal 10 instructs the file transfer to one of the general-purpose servers A4 and B5, for example, the general-purpose server A4, by the transfer instruction means 13 (s3, s4).
[0021]
As described above, the servers A4 and B5 manage whether or not the file transfer can be relayed, and the server A4 receiving the file transfer instruction from the terminal 10 transfers to the terminal 10 if the file transfer is impossible. Notify impossible.
[0022]
When the transfer result determination means 14 of the terminal 10 receives the transfer failure (s5), the instruction change means 15 switches the general-purpose server instructing file transfer to B5 (s6, s7), and the transfer instruction means 13 causes the general-purpose server to switch. Instruct B5 to transfer the file.
[0023]
On the other hand, if the file transfer is possible in the general-purpose server A4 or B5, transfer of the file a to the general-purpose machine 2 is executed (note that this type of general-purpose server usually fails even if one transfer fails) The transfer is retried up to a predetermined number of times.) When the general-purpose server A4 or B5 succeeds in transferring the file, the general-purpose server A4 or B5 notifies the terminal 10 of the transfer end.
[0024]
When the transfer result determination unit 14 of the terminal 10 receives the transfer end (s8), the deletion instruction unit 16 instructs the deletion of all the general-purpose servers that have transmitted the files, here, the files a transmitted to the servers A4 and B5. Along with (s9), it is displayed (or recorded in addition) to the operator that the transfer of file a to the general-purpose machine 2 has been completed (s10).
[0025]
In addition, the transfer result determination unit 14 of the terminal 10 issues a file transfer instruction to the same general-purpose server again after a certain period of time when there is no transfer impossible or transfer end notification (s11, s12). , S13). However, if there is no response after repeating this N times, it is determined that there is some failure in the general-purpose server, and the general-purpose server that issues the file transfer instruction is switched in the same manner as when transfer failure is notified. .
[0026]
Furthermore, the transfer result determination unit 14 of the terminal 10 notifies that all the general-purpose servers A4 and B5 that can be used for file transfer to the general-purpose machine 2 stored in the storage unit 11 are notified that transfer is impossible, or file transfer If there is no response after repeating the instruction N times, the deletion instruction means 16 instructs the general-purpose server 2 to transmit all the general-purpose servers A4 and B5 that have transmitted the file (s14). The fact that the transfer of file a is not completed is displayed to the operator (or recorded in addition to this) (s15).
[0027]
As described above, if there is a usable server among a plurality of general-purpose servers stored as general-purpose servers that can be used for file transfer to a transfer destination general-purpose machine in advance, the general-purpose server transfers the file to the transfer-destination general-purpose machine. By realizing the selection of general-purpose servers that can be used by automatic determination, the probability of success in scheduled automatic file transfer can be increased.
[0028]
Note that a general-purpose file transfer protocol or command such as rcp or ftp is used for file transfer.
[0029]
【The invention's effect】
As described above, according to the present invention, when transferring a file to a predetermined general-purpose machine, one general-purpose server made available for file transfer to the predetermined general-purpose machine is transferred in advance. Even if it is impossible, file transfer can be performed using another general-purpose server. This makes it possible to perform file transfer with a high probability by specifying the transfer destination general-purpose machine without being aware of the state of the general-purpose server that is the transfer path. Increased reliability.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of a conventional file transfer system. FIG. 2 is a block diagram showing an example of an embodiment of a file transfer system according to the present invention. FIG. 3 is a flowchart of an operation in a terminal. FIG. 5 is an explanatory diagram showing a file transfer according to the present invention. FIG. 5 is an explanatory diagram showing a file transfer according to the present invention.
2: general-purpose machine, 3: network, 4, 5: general-purpose servers A and B, 10: terminal, 11: storage means, 12: file transmission means, 13: transfer instruction means, 14: transfer result determination means, 15: instruction Change means, 16: delete instruction means.

Claims (2)

A file transfer system for transferring a file from one terminal to an arbitrary general-purpose machine via a general-purpose server on a network,
One terminal
Storage means for storing at least two general-purpose servers available for file transfer to the general-purpose machine for each general-purpose machine serving as a file transfer destination;
A file transmission means for transmitting a file to all the general purpose servers stored in the storage means corresponding to the predetermined general purpose machine when the file transfer to the predetermined general purpose machine is instructed by an operator or a preset schedule; ,
Transfer instruction means for instructing one of the general-purpose servers that transmitted the file to transfer a file to a predetermined general-purpose machine;
A transfer result judging means for judging success / failure of file transfer by a general-purpose server instructing file transfer;
An instruction changing unit for switching a general-purpose server instructing file transfer in the transfer instruction unit when the file transfer fails;
When the file transfer is successful or when the file transfer by all the general-purpose servers that sent the file fails, the delete instruction means for instructing all the general-purpose servers that sent the file to delete the file is provided. File transfer system. 2. The apparatus according to claim 1, further comprising instruction changing means for switching a general-purpose server instructing file transfer in the transfer instruction means when a file transfer fails by giving a predetermined number of repetition instructions to the same general-purpose server. File transfer system.

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