JPH01243168A - System for managing directory - Google Patents

Abstract

PURPOSE:To obtain a guarantee that information related to a shared resource is the same on the local directories of all computer systems to enquire it by automatically registering the intranetwork shared resource. CONSTITUTION:A deletion responding means 19 receives the deletion response of the intranetwork shared resource from the computer system group of a level just under the computer system, and checks the enquiry pass of the intranetwork shared resource in a local directory 7 of the computer system. The deletion of the enquiry pass is completed when the change responses from all enquiry passes are gathered, and when the intranetwork shared resource is the registration by the enquiry, the deletion response is notified to the computer system just over the computer system through the use of a communicating means 5 to a high order. Thus, the guarantee that the information related to the shared resource is the same on the local directories of all computer systems to enquire it can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to a network in which a plurality of computer systems constitute a network, and among various resources in the computer system, access is made from a program of a play evaluation calculator system in the network. The present invention relates to a directory management method in which unique names and various attributes within the network are managed in a distributed manner over the network as a directory for possible shared resources within the network.

[Conventional technology]

Conventionally, directory management of shared resources within a network has been performed independently by each computer system within the network, or even when processing is automatically performed online between computer systems, the directory management of shared resources within a network has been performed independently. Management was performed only on the only computer system within the network. Therefore, in the former case, the process of registering shared resources within the network to the local directory is not automatically performed between computer systems, but each computer can, for example, use batch processing to register the network shared resources in the local directory within that computer system. Information on internally shared resources was registered.

Processing related to network shared resources that have been changed or deleted must be performed by the administrators of all other computer systems that use the network shared resources.

Even in the latter case, all registration, modification, deletion, and inquiry requests regarding shared resources within the network are concentrated on that computer system. Furthermore, a computer system that centrally manages directories also needs to simultaneously manage information regarding other computer systems that are inquiring about shared resources within the network, such as routes to those computer systems.

[Problem to be solved by the invention]

Among the conventional directory management methods for shared resources within a network described above, if each computer system within the network performs this independently, registration is not automatic and there is a possibility of registration errors. There is a drawback that there is no guarantee that the information regarding internal shared resources is the same on the local directories of all computer systems that are inquiring about it. Furthermore, when a network shared resource is changed or deleted, if other computer systems that refer to the changed or deleted network shared resource are not notified, the changes or deletion results may not be reflected. However, the disadvantage is that the results of changes or deletions are not immediately reflected in other computer systems.

Among the conventional network shared resource directory management methods described above, if directory management is performed centrally on the only computer system in the network, each computer system in the network must perform the directory management independently. However, since all the inquiry requests regarding shared resources within the network that are regularly made are concentrated on that computer system, if that computer system is running or the line to that computer system is has the disadvantage that all queries will fail if there is a problem. In addition, even if the information about the network shared resource for which the inquiry request was made is stored in the local directory of a nearby computer system, the information cannot be used, so directory management is not done intensively. It also has the disadvantage of requiring requests to be made to the existing computer system.

[Means to solve the problem]

A plurality of computer systems constitute a network, and among the various resources within the computer system, a unique name within the network and a shared resource within the network that can be accessed from the program of the play rating calculator system within the network. A distributed processing computer system that manages various attributes in a distributed manner over a network as a directory, comprising: storage means for tiering computer systems in the network and storing levels of the computer systems in the network; , a storage means for storing a route to a computer system at a level immediately above the computer system, a storage means for storing a route to a group of computer systems at a level immediately below the computer system, and when the computer system is not at the highest level. , upper-level communication means for communicating requests, confirmations, instructions, and response messages regarding shared resources in the network with a computer system at the level directly above the computer system; and when the computer system is not at the lowest level, lower-level communication means for communicating requests, confirmations, instructions, and response messages regarding shared resources in the network with a group of computer systems at a level directly below the computer system; and the computer system and a level below the computer system. By a registration confirmation or inquiry confirmation message obtained as a result of a registration request or inquiry request from a group of computer systems,
A storage means (i.e., a local directory in the computer system) for storing acquisition types, names, attributes, registered subroutines, and inquiry subroutine lists of various resources; and the computer system and a computer system at the level directly below the computer system. The registration request for the shared resource within the network is checked against the local directory in the computer system, and as long as it is appropriate, the registration request is transmitted to the highest level computer system using the upper level communication means. Registration confirmation from the registration requesting means, the computer system immediately above the computer system, and the front-end registration requesting means within the computer system, up to the computer system that made the registration request using the lower-layer communication means. and, if the registration confirmation is positive, registration confirmation means for registering information regarding the intra-network shared resource and a registered lower route in the local directory in the computer system; A request to change the network shared resource from the computer system at the highest level is checked against the local directory within the computer system, and as long as it is appropriate, the request is sent to the highest level computer system using the communication means for the higher level. a change request means for transmitting a change request to a computer system immediately above the computer system and a change request from the change request means within the computer system, using the lower-layer communication means to request a change; a change confirmation means for transmitting a change confirmation to a computer system and, if the change confirmation is affirmative, changing information regarding the intra-network shared resource in the four-cal directory in the computer system; and the computer system and the computer. A request for deletion of the shared resource in the network from a computer system at the level immediately below the system is checked against the local directory within the computer system, and as long as it is appropriate, a request to delete the shared resource in the network is sent to the top level using the communication means for the upper level. a deletion request means for transmitting a deletion request to a computer system; and a deletion confirmation from a computer system at a level immediately above the calculation system and the change request means in the computer system, and a deletion request using the lower-layer communication means. a deletion confirmation means for transmitting deletion confirmation to the computer system that performed the deletion, and, if the deletion confirmation is affirmative, deleting information regarding the network shared resource in the local directory in the computer system; A query request for the shared resource in the network from a computer system at a level directly below the computer system is checked against the local directory in the computer system, and if the query is not successful in the computer system, the communication with the upper level is performed. an inquiry requesting means for requesting an inquiry request from a group of higher-level computer systems using means, and an inquiry requesting means for requesting an inquiry request from a computer system at the level immediately above the computer system and the inquiry requesting means within the computer system, transmit the inquiry confirmation to the computer system that made the inquiry request using means, and if the inquiry confirmation is affirmative, register information regarding the shared resource in the network in the local directory in the computer system and the inquiry lower route. If the inquiry confirmation means and the change confirmation means in the computer system confirm that the change in the network shared resource is positive, upon receiving a notification from the change confirmation means, the network shared resource in the local directory is checked. a change notification means for checking the inquiry path of the computer system and notifying a change instruction to a group of computer systems at the level directly below the computer system registered in the inquiry path using the lower-layer communication means; and a computer system at the level immediately below the computer system. Upon receiving a response from the group to change the shared resource within the network,
The inquiry path of the network shared resource in the local directory of the computer system is checked, and when change responses from all inquiry paths are received, the inquiry path change is completed, and the network shared resource is registered by inquiry. In this case, the change response means notifies a change response to the computer system directly above the computer system using the upper-layer communication means, and the deletion confirmation of the network shared resource in the deletion confirmation means in the computer system is affirmative. In this case, upon receiving a notification from the deletion confirmation means, check the inquiry path of the network shared resource in the local directory, and check the level directly below registered in the inquiry path using the lower-layer communication means. a deletion notification means for notifying a deletion instruction to a computer system group; and upon receiving a deletion response for the network shared resource from a computer system group immediately below the computer system;
The inquiry path of the network shared resource in the local directory of the computer system is checked, and when change responses from all inquiry paths are received, the deletion of the inquiry path is completed, and the network shared resource is registered by inquiry. In this case, there is provided a deletion response means for notifying a deletion response to a computer system immediately above the computer system using the above-mentioned upper-layer communication means.

〔Example〕

To 13- Next, the present invention will be explained in detail with reference to the drawings.

Referring to FIG. 1, in one embodiment of the present invention, a plurality of computer systems constitute a network, and among various resources in the computer system, a network is accessible from a program of a play review calculator system in the network. In a distributed processing computer system 1 in which unique names and various attributes within the network are managed in a distributed manner over the network as a directory for shared resources within the network, the computer system 1 within the network is hierarchized,
storage means 2 for storing the level of the computer system 1 in the network; storage means 3 for storing the route of the computer system at the level immediately above the computer system 1 in the computer system 1; Between the storage means 4 that stores the route to the computer system group at the level immediately below, and the computer system at the level immediately above the computer system if the computer system is not at the top level, =14- the intra-network shared resources between the upper-level communication means 5 that communicates requests, confirmations, instructions, and response messages regarding the shared resources within the network, and, if the computer system is not the lowest level, the computer systems at the level immediately below the computer system. lower-layer communication means 6 for communicating requests, confirmations, instructions, and response messages regarding the registration confirmation or inquiry obtained as a result of a registration request or inquiry request from the computer system and a group of computer systems at a lower level than the computer system; By confirmation message,
A storage means (i.e., a local directory in the computer system) 7 for storing the acquisition type, name, attribute, registered subroute, and inquiry subroute list of various resources, and the computer system and the computer at the level immediately below the computer system. A registration request for the shared resource in the network from the system is checked against the local directory in the computer system, and as long as it is appropriate, a registration request is made to the highest computer system using the upper-level communication means 5. a registration requesting means 8 that transmits a registration request, and a registration request is made using the lower-layer communication means 6 to confirm registration from a computer system immediately above the computer system and the registration requesting means 8 within the computer system. a registration confirmation means 9 for transmitting a registration confirmation to a computer system, and for registering information regarding the intra-network shared resource and a registered lower route in the local directory in the computer system if the registration confirmation is positive; A change request for the shared resource in the network from a computer system directly under the system and the computer system is checked against the local directory in the computer system, and as long as it is appropriate, the communication means 5 for the upper layer is sent. a change request means 10 that transmits a change request to the highest-level computer system using a computer system; a change confirmation for transmitting a change confirmation to the computer system that has made the change request using means 6, and, if the change confirmation is affirmative, changing information regarding the network shared resource in the local directory in the computer system; means 11; checking requests for deletion of the network shared resource from the computer system and the computer system immediately below the computer system with the local directory in the computer system, and as long as the requests are valid; Deletion requesting means 12 for transmitting a deletion request to the highest level computer system using the upper level communication means 5; Deletion from the computer system at the level immediately above the computer system and the change requesting means 10 within the computer system. The deletion confirmation is transmitted to the computer system that made the deletion request using the lower-layer communication means 6, and if the deletion confirmation is affirmative, information regarding the network shared resource of the local directory in the computer system is transmitted. a deletion confirmation means 13 for deleting a file; and checking requests for inquiry of the network shared resource from the computer system and a computer system immediately below the computer system against the local directory in the computer system; Inquiry request means 1 for requesting an inquiry request from a group of higher-level computer systems using the upper-level communication means 5 when the inquiry is not successful in the computer system;
4, and the inquiry confirmation from the computer system at the level immediately above the computer system and the inquiry requesting means 14 in the computer system is sent to the computer system that made the inquiry request using the lower-layer communication means 6. Inquiry confirmation means 15 that transmits the information and, if the inquiry confirmation is positive, registers information regarding the intra-network shared resource of the local directory in the computer system and the inquiry lower route.
If the change confirmation of the network shared resource by the change confirmation means 11 in the computer system is affirmative, upon receiving the notification from the change confirmation means 11, the change confirmation of the network shared resource of the local directory is performed. a change instruction means 16 that examines the inquiry path and notifies a group of computer systems at the immediately lower level registered in the inquiry path of a change instruction using the downward communication means 6; In response to a response to change the shared resource within the network from a group of computer systems at the level of
The inquiry path of the network shared resource in the local directory of the computer system is checked, and when change responses from all inquiry paths are received, the inquiry path change is completed, and the network shared resource is changed by the inquiry. In the case of registration, if the deletion confirmation of the intra-network shared resource by the deletion confirmation means 13 in the computer system of the computer system using the upper-layer communication means 5 is positive, a notification from the deletion confirmation means 13 is sent. In response, the inquiry path of the network shared resource in the local directory is checked, and a deletion instruction is notified to the computer systems at the immediately lower level registered in the inquiry path using the lower-layer communication means 6. Deletion instruction means 18 for deleting the intra-network shared resource in the local directory of the computer system in response to the intra-network shared resource deletion 7 response from the computer system group immediately below the computer system; The inquiry path is checked, and deletion of the inquiry path is completed when change responses from all inquiry paths are collected.If the shared resource in the network is registered by inquiry, the above-mentioned upper-level communication means 5 is used to delete the inquiry path from the computer system. and a deletion response means 19 for notifying a deletion response to the computer system directly above the computer system.

Referring to Figure 2, the local directory contains:
Acquisition type of network shared resources, name, attributes,
Registered lower route and inquiry lower route list are stored.

In explaining this embodiment, Figure 3 shows the network connection configuration, Figure 4 shows the hierarchical structure of computer systems in the network, and Figure 5 shows computer system names, levels, upper route names, and lower route names. are shown respectively.

Next, the operation of the directory management system of this embodiment configured as described above will be specifically explained with reference to FIGS. 6 to 22.

First, suppose that a request to register the intra-network shared resource rsc-1 occurs in the computer system system-D, and as a result of checking the registration request means 8 in the system-D with the local directory, Since it is a shared resource, it is judged to be appropriate, and communication means 5 for upper layer
The registration request is transmitted to the immediately above computer system system-H via the upper route called urt-DB shown in FIG.

The computer system system-86 which has accepted the registration request from the upper route drt-BD lower-level communication means 6 adds the lower-level route drt-BD to the transmission path of the registration request and sends the registration request to the registration request means 8. give. The registration requesting means 8 that received the registration request checks it with the local directory and determines that it is appropriate because it is an unregistered network shared resource, and uses the upper-level communication means 5 to send the request via the upper-level route urt-BA. - transmits the registration request to the immediately above computer system system-A.

The lower-level communication means 6 in the computer system system-A that has accepted the registration request from the lower-level route drt-AB adds the lower-level route drt-AB to the transmission path of the registration request and sends the registration request to the registration request means 8. Pass the request.

The registration request means 8 that received the registration request compared it with the local directory, and determined that it was valid because it was an unregistered network shared resource, and that the value of the network level storage area 2 was 1101+, that is, the maximum. Since it is a higher level computer system, the registration request is passed to the registration confirmation means 9. The registration confirmation means 9 that has received the registration request stores the network shared resource rs in the local directory.
Register c-1.

Referring to FIG. 6, computer system system-1
1 registration", the name is rsc-1, the attribute is attr-1, the registered lower route is drt-AB added to the transmission path,
There will be no inquiry sub-route list. The registration confirmation means 9 is
Furthermore, after referring to the registered lower route drt-AB and deleting drt-AB from the transmission path, the lower-layer communication means 6 is used to confirm the registration via the lower route drt-AB with the transmission path attached to the computer system system- Communicate to B.

Upper-level communication means 5 in the computer system system-B that accepted the registration confirmation from the upper-level route ur t-BA.
passes the registration confirmation to the registration confirmation means 9. Upon receiving the registration confirmation, the registration confirmation means 9 registers the network shared resource rsc-1 in the local directory.

Referring to FIG. 7, computer system system-B
At this time, the acquisition type is "registration" for registration by the registration confirmation means 9, and the name is r.
sc~1, the attribute is at tr-1, the registered lower route is drt-BD added to the transmission path, and the inquiry lower route list is none.

The registration confirmation means 9 further refers to the registered lower route drt-BD, deletes the lower route drt-BD from the transmission path, and then sends the registration confirmation via the lower route drt-BD to the transmission path using the lower-layer communication means 6. The computer system directly under the
system-D.

The upper-layer communication means 5 in the computer system system-D, which has accepted the registration confirmation from the upper route urt-DB, passes the registration confirmation to the registration confirmation means 9. Upon receiving the registration confirmation, the registration confirmation means 9 registers the network shared resource rsc-1 in the local directory.

Referring to FIG. 8, computer system system-D
At this time, the acquisition type is “registration” for registration by the registration confirmation means, and the name is r
sc-1, the attribute is attr-1, there is no registered lower route because the transmission path is empty, and there is no inquiry lower route list.

Since there is no registered lower level route, the registration confirmation means 9 no longer transmits information to the lower level computer system.

Next, the computer system system-P responds to the inquiry request for the network shared resource rsc-1.
The inquiry request means 14 of system-F checks the local directory and finds that it is an unregistered shared resource within the network, so it sends an inquiry request to the computer directly above it via the upper route urt-FC using the communication means 5 for the upper layer. system s
system-C.

The intra-lower-layer communication means 6 in the computer system system-C, which has accepted the inquiry request from the lower-order route drt-CF, adds the lower-order route drt-CF to the transmission path of the inquiry request and sends the inquiry request to the inquiry request means 14. Pass the inquiry request.

The inquiry request means 14 that received the inquiry request checked it with the local directory, and found that it was an unregistered network shared resource. The inquiry request is transmitted to the computer system immediately above system-A.

The lower-layer communication means 6 of the computer system system-A that has accepted the inquiry request from the lower-order route drt-AC adds the lower-order route drt-AC to the transmission path of the inquiry request and sends the inquiry request to the inquiry request means 14. give.

Inquiry requesting means 14, which received the inquiry request, passes the inquiry request to inquiry confirmation means 15 since it is a registered network shared resource as a result of checking with the local directory. Upon receiving the inquiry request, the inquiry confirmation means 15 stores the lower route group drt-AC added to the transmission path in the inquiry lower route list of the corresponding intra-network shared resource in the local directory.

Referring to FIG. 9, computer system system-A
At this time, the acquisition type is "registration", the name is rsc-1, and the attribute is attr-1 in the local directory of
, the registered lower route is drt-AB, and the inquiry lower route list is drt-AC. The inquiry confirmation means 15 further refers to the inquiry lower route drt-AC, deletes the lower route drt-AC from the transmission path, and then uses the lower-layer communication means 6 to confirm the inquiry via the lower route drt-AC. It is transmitted to the computer system system-C immediately below with a transmission path.

The higher-level communication means 5 in the computer system system-C, which has accepted the inquiry confirmation from the upper route urt-CA, passes the inquiry confirmation to the inquiry confirmation means 15. Upon receiving the inquiry confirmation, the inquiry confirmation means 15 registers the network shared resource rsc-1 in the local directory.

6. Referring to Figure 1O, the computer system system-
At this time, the acquisition type of the local directory of 〇 is "inquiry" because it is registered by the inquiry confirmation means 15, the name is rsc-1, the attribute is attr-1, there is no registered lower route, and the inquiry lower route list is transmitted. This becomes the lower route drt-CF added to the path.

The inquiry confirmation means 15 further includes the inquiry lower route drt-CF.
After deleting the lower route base drt-CF from the transmission path, the lower route base drt-CF is deleted using the communication means 6 for the lower level.
The inquiry confirmation is transmitted via P to the computer system directly below system-F with a transmission path.

The higher-level communication means 5 in the computer system system-F, which has accepted the inquiry confirmation from the upper route urt-FC, passes the inquiry confirmation to the inquiry confirmation means 15. Upon receiving the inquiry confirmation, the inquiry confirmation means 15 registers the network shared resource rsc-1 in the local directory.

Referring to FIG. 11, the computer system system-
In the local directory of F, at this time, the acquisition type is “inquiry” for registration by the inquiry confirmation means 15.
The name is rsc-1, the attribute is attr-L, there is no registered lower route, and there is no inquiry lower route because the transmission path is empty.

Since there is no inquiry lower route list, the inquiry confirmation means 15 no longer transmits the information to the lower level computer system.

Thirdly, if a request for inquiry about the intra-network shared resource rsc-1 occurs in the computer system system-G, the inquiry request means 14 in the system-G checks the local directory and finds an unregistered network. Since it is a shared resource within the network, the inquiry request is transmitted to the immediately upper computer system system-C via the upper-layer route urt-GC using the upper-layer communication means 5.

The higher-level communication means 6 in the computer system system-C that has accepted the inquiry request from the lower route drt'-CG adds the lower route drt-CG to the transmission path of the inquiry request and transmits it to the inquiry request means 14. pass the inquiry request to.

The inquiry requesting means (4) which received the inquiry request checks it with the local directory and finds that it is a registered network shared resource, so it passes the inquiry request to the inquiry confirmation means 15. Upon receiving the inquiry request, the inquiry confirmation means 15 adds the lower route group dr t-CG added to the transmission path to the inquiry lower route list of the corresponding intra-network shared resource in the local directory.

Referring to FIG. 12, the computer system system
In the local directory of m-C, the acquisition type is "query", the name is rsc-1, and the attribute is attr.
-1, There is no registered lower route, the inquiry lower route list is dr
They become t-CF and dr t-CG. Inquiry confirmation means 15
further refers to the inquiry lower route drt-CG that has just been added, deletes the lower route group drt-CG from the transmission path, and then deletes the lower route drt-CG using the lower-layer communication means 6.
The inquiry confirmation is transmitted to the computer system directly below system-G with a transmission path. In this way, even if an inquiry request is made for information regarding the network shared resources registered in the local directory 7, there is no longer a need to transmit the inquiry request to the higher-level computer system.

Upper-level communication means 5 in the computer system system-G that accepted inquiries and confirmations from the upper-level route ur t-GC.
passes the inquiry confirmation to the inquiry confirmation means 15. Upon receiving the inquiry confirmation, the inquiry confirmation means 15 registers the intra-network shared resource rsc-1 in the local directory.

Referring to FIG. 13, computer system system-G
At this time, the acquisition type is "'query" for registration by the query confirmation means 15, the name is rsc-1, the attribute is attr-1, there is no registered lower route, and the query lower route list is the transmission path. Since it is empty, it is empty. Since there is no inquiry lower route list, the inquiry confirmation means 15 no longer transmits the information to the lower level computer system.

Finally, if a request to change the attribute of the network shared resource rsc-1 occurs in the computer system system-D, the change request means 10 in system-D compares the attribute with the local directory and changes the attribute to att.
We judge that it is appropriate to change from r-1 to attr-2,
The change request is sent to the computer system directly above system-Q via the upper-level route urt-DB using the upper-level communication means 6.
to 30 = communicate to B.

The lower-layer communication means 6 in the computer system system-B, which has accepted the change request from the lower-order route drt-BD, passes the change request to the change request means 10. After receiving the change request, the change requesting means 10 compares it with the local directory and determines that it is appropriate to change the attribute from attr-1 to attr-2, and uses the upper-level communication means 5 to change the upper-level route. The change request is transmitted to the immediately above computer system system-A via urt-BA.

The lower-layer communication means 6 in the computer system system-A, which has accepted the change request from the lower-order path drt-AB, passes the change request to the change request means 10. The change request means 10 that received the change request passes the change request to the change confirmation means 11 because the value of the network level storage area 2 is 0'', that is, it is the highest level computer system. The change confirmation means 11 changes the network shared resource rsc-1 of the local directory.

Referring to FIG. 14, the computer system system
In the local directory of m-A, the acquisition type is ``registration'', the name is rsc-1, the attribute is attr-2 as a result of change, the registered lower route is drt-AB, and the query lower route list is The change is not completed in drt-AC.

The change confirmation means 11 further includes the registered lower route drt-AB.
with reference to the lower-level route drt- using the lower-level communication means 6.
Confirm changes via AB on the computer system directly under it.
m-B.

The higher-level communication means 5 in the computer system system-B, which has accepted the change confirmation from the higher-level route urt-BA, passes the change confirmation to the change confirmation means 11. After receiving the change confirmation, the change confirmation means 11 changes the network shared resource rsc-1 of the local directory.

Referring to FIG. 15, the computer system system
In the local directory of m-B, at this time, the acquisition type is "'registration"', the name is rsc-1, the attribute is attr-2 as a result of the change, and the registered lower route is drt-B.
D. There is no inquiry lower route list. Change confirmation method 1
1 further refers to the registered lower-level route drt-BD and uses the lower-level communication means 6 to transmit the change confirmation to the computer system system-D directly below it via the lower-level route drt-BD.

The higher-level communication means 5 in the computer system system-B that has accepted the change confirmation from the higher-level route urt-DB passes the change confirmation to the change confirmation means 11. After receiving the change confirmation, the change confirmation means 11 changes the network shared resource rsc-1 of the local directory.

Referring to FIG. 16, the computer system system-
At this time, in the local directory of D, the acquisition type is "registration", the name is rsc-1, the attribute is attr-2 as a result of the change, there are no registered subordinate routes, and there is no inquiry subordinate route list. Since there is no registered lower-level route, the change confirmation means 11 no longer transmits the change confirmation to the lower-level computer system.

On the other hand, since the inquiry lower route list of the intra-network shared resource rsc-1 of the local directory is not empty, the change confirmation means 11 in the computer system system-A further refers to the inquiry lower route, and the lower-layer communication means 6 The change instruction is transmitted to the computer system system-C immediately below via the lower path drt-AC using the.

The higher-level communication means 5 in the computer system system-C, which has accepted the change instruction from the higher-level route urt-CA, passes the change instruction to the change instruction means 16. Upon receiving the change instruction, the change instruction means 16 changes the network shared resource rsc-1 of the local directory. Local directory network shared resource rs
Since the inquiry lower route list of c-1 is not empty, the inquiry lower route list is referred to and a change instruction is sent via the lower route communication means 6 to the computer system system-F directly below the lower route. The change instruction is transmitted to the computer system system-G immediately below via drt-CG.

Referring to FIG. 17, computer system system-C
At this time, the retrieval type is ``query'', the name is rsc-1, and the attribute is the result of the change a.
ttr-2, there is no registered lower route, the inquiry lower route list is drt-CF, drt-CG, and both routes have not been changed yet.

The higher-level communication means 5 in the computer system system-F, which has accepted the change instruction from the higher-level route urt-FC, passes the change instruction to the change instruction means 16. The change instruction 16 that has received the change instruction changes the network shared resource rsc-1 of the local directory. Local directory network shared resource rsc-
Since the inquiry lower route list of No. 1 is empty, the change instruction is no longer transmitted to the lower level computer system.

Referring to FIG. 18, in the local directory of computer system F, the acquisition type is ``11 inquiry'', the name is rsc-L, the attribute is attr-2 as a result of the change,
There are no registered subordinate routes, and there is no inquiry subordinate route list. The change instruction means 16 passes the change instruction to the change response means 17 since the change is completed without the need to transmit the change instruction to the lower-level computer system. The change response means 17 that has received the change instruction transmits the change response to the immediately upper computer system system-C via the upper-layer path urt-FC using the upper-layer communication means 5.

The lower-layer communication means 6 in the computer system system-C, which has accepted the change response from the lower path drt-CF, passes the change response to the change response means 17. Upon receiving the change response, the change response means 17 completes changing the route drt-CF in the inquiry lower route list of the network shared resource rsc-1 of the local directory. Since there is an incomplete lower route drt-CG in the inquiry lower route list, the change response is not yet transmitted to the higher level computer system.

Referring to FIG. 19, the computer system system-
In this case, the local directory of C has a retrieval type of ``query'', a name of rsc-1, and an attribute of attr-
2. There are no registered lower routes, and the inquiry lower route list is drt.
-CP, drt-CG, and only drt-CF has been changed.

The change instruction is passed to the change instruction means 16. Upon receiving the change instruction, the change instruction means 16 changes the network shared resource rsc-1 of the local directory.

Local directory network shared resources r
Since the inquiry lower route list of sc-1 is empty, the change instruction is no longer transmitted to the lower level computer system.

Referring to FIG. 20, the computer system system-
In the local directory of G, at this time, the acquisition type is ``query'', the name is rsc-1, the attribute is attr-2 as a result of the change, there is no registered sub-route, and there is no inquiry sub-route list. The change instruction means 16 passes the change instruction to the change response means 17 since the change is completed without the need to transmit the change instruction to the lower-level computer system. The change response means 17 that has received the change instruction communicates with the upper layer communication means 5.
is used to transmit the change response to the immediately above computer system system-C via the upper route urt-GC.

The lower-layer communication means 6 in the computer system system-C, which has accepted the change response from the lower path drt-GC, passes the change response to the change response means 17. Upon receiving the change response, the change response means 17 completes changing the route of drt-CG in the inquiry lower route list of the network shared resource rsc-1 of the local directory. Since there is no incomplete inquiry lower route in the inquiry lower route list and the change has been completed, the change response is sent to the immediately upper computer system s via the upper route urt-CA using the upper communication means 5.
system-A.

Referring to FIG. 21, the computer system system-
The local directory of
2. There are no registered lower routes, and the inquiry lower route list is drt.
-CF, drt-CG and drt-CF, both routes have been changed.

The lower-layer communication means 6 in the computer system system-A, which has accepted the change response from the lower-level path drt-AC, passes the change response to the change response means 17. Upon receiving the change response, the change response means 17 changes the route drt-AC in the inquiry lower route list of the intra-network shared resource rSC-1 of the local directory as change-38=Complete. Since there is no incomplete inquiry sub-route in the inquiry sub-route list, the change has been completed, and the acquisition type is "registration", the change response is not transmitted to the higher level computer system.

Referring to FIG. 22, the computer system system-
The local directory of A is "registered", the name is rsc-1, the attribute is attr-2, there are no registered lower routes, and the inquiry lower route list has been changed with dr t-AC.

Note that even when a deletion request is generated from a certain computer system, the operation is almost the same as that for a change request.

〔Effect of the invention〕

According to the present invention, by employing the directory management method described above, the registration of network shared resources is automatic, so that information regarding a certain network shared resource can be accessed by all computer systems inquiring about it. There is a guarantee that the local directory is the same, and furthermore, if a change or deletion is made, the change or deletion is automatically reflected on other computer systems that refer to the shared resource in the network. will be carried out immediately.

In addition, if inquiry requests regarding shared resources within the network that are regularly made are successful at a certain layer of the network, they will not be transmitted to higher-level computer systems, so even if the top-level computer system is down or the top-level computer system is This has the advantage that even if the line to the computer system is a problem, it can be resolved locally. Further, since a certain computer system registers in the local directory information regarding shared resources within the network for which an inquiry is requested from itself or a subordinate computer system, all inquiry requests from the second time can be resolved by that computer system. Considering that computer systems within a certain group of networks usually utilize similar network shared resources, most of the inquiry requests can be resolved by computer systems in adjacent hierarchies, that is, nodes located close to each other on the network.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing one embodiment of the present invention, FIG. 2 is a diagram showing the configuration of a local directory in one embodiment of the present invention,
3 to 5 are diagrams showing the hierarchical structure of one embodiment, and FIG.
FIG. 22 is an explanatory diagram of the operation state of one embodiment. In FIGS. 1 to 22, 1... computer system, 2... network level storage area,
3...Upper route storage means, 4...Lower route storage means, 5...Upper communication means, 6...
. . . Upper level communication means, 7 . . . Local directory, 8 . . . Registration request means, 9 . . .
... Registration request means, 10... Change request means, 1
1... Change confirmation means, 12... Deletion request means, 13... Deletion confirmation means, 14...
...Inquiry request means, 15...Inquiry confirmation means, 1
6... Change instruction means, 17... Change response means, 18... Deletion instruction means, 19...
...Delete response means. Agent: Susumu Uchihara, patent attorney Figure 3

Claims (1)

[Scope of Claims] A network in which a plurality of computer systems are layered and connected through paths to form a network, and among various resources within the computer system, the network can be accessed from a program of another computer system within the network. In a distributed processing computer system in which unique names and attributes for shared resources are managed in a distributed manner over the network as a directory, if the computer system is not at the top level, the computer system at the level immediately above the computer system. and a group of computer systems immediately below the computer system, if the computer system is not at the lowest level, and a group of computer systems at the level immediately below the computer system. and lower-layer communication means for communicating requests, confirmations, instructions, and response messages regarding the shared resources within the network, and registration requests or inquiry requests from the computer system and a group of computer systems at a lower level than the computer system. The registration confirmation or inquiry confirmation message obtained as a result of
A local directory means for storing acquisition types, names, attributes, registered sub-route and inquiry sub-route lists of various resources, and registration of the shared resources within the network from the computer system and the computer system at the level immediately below the computer system. registration request means for checking the request with the contents of the local directory means in the computer system and transmitting the registration request to the highest level computer system using the upper communication means as long as the request is valid; Transmitting the registration confirmation from the computer system immediately above the computer system and the registration requesting means in the computer system to the computer system that made the registration request using the lower-layer communication means, and also confirming the registration. is affirmative, registration confirmation means for registering information regarding the shared resources within the network and a registered lower route in the local directory means in the computer system; The inquiry request for the shared resource within the network is checked against the contents of the local directory means in the computer system, and if the inquiry is not successful in the computer system, the inquiry request is sent to the higher-level computer using the higher-level communication means. An inquiry request means for requesting an inquiry request from a system group, a computer system immediately above the computer system, and an inquiry confirmation from the inquiry request means within the computer system, and an inquiry request using the lower-layer communication means. Inquiry confirmation means for transmitting an inquiry confirmation to the computer system that requested the inquiry, and for registering, if the inquiry confirmation is positive, information regarding the intra-network shared resource and the inquiry lower route in the contents of the local directory means in the computer system; A directory management method characterized by including.