Method and apparatus for directed data propagation

• US 6,047,289 A
• Filed: 11/07/1997
• Issued: 04/04/2000
• Est. Priority Date: 11/07/1997
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Novell Incorporated (Open Text Corporation)
• Inventors: Jarvis, Brian Lee, Thorne, Bruce Warner
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): Coby, Frantz
• Application Number:
  US08/965,803
• Time in Patent Office: 879 Days
• Field of Search: 707/10, 707/104, 395/200.31, 395/200.2, 395/200.01
• US Class Current: 1/1
• CPC Class Codes: G06F 16/27 Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
• CPC Class Codes: G06F 16/273 Asynchronous replication or reconciliation

Abstract

A computer system comprises a management service having a plurality of objects. Each of the objects has at least one associated attribute with associated values. A master object in the management service includes a source attribute with associated data. One or more slave objects in the management service correspond to the master object and are distinct from the master object. Each of these slave objects has a destination attribute which corresponds to the source attribute of the master object. A propagation agent is capable of accessing the slave objects and transmitting the data associated with the source attribute to the destination attributes of the slave objects.

Claims

1. A computer system, comprising:

a) a network management service comprising a plurality of objects, each object having at least one associated attribute with associated values;

b) a master object in said network management service comprising a reference within the network management service to identify the master object, said master object further comprising a source attribute having data associated therewith;

c) one or more slave objects in said network management service corresponding to said master object, each of said one or more slave objects comprising a distinct reference within the network management service to identify the slave object, said distinct reference being different from the reference of the master object, each of said one or more slave objects having a destination attribute corresponding to the source attribute of the master object; and

d) a propagation agent capable of accessing the one or more slave objects and transmitting the data associated with the source attribute to the destination attribute of the one or more slave objects.

2. A computer system as recited in claim 1, wherein the network management service comprises a distributed directory.

3. A computer system as recited in claim 2, further comprising a plurality of partitions in the distributed directory, and the master and slave objects are each located in different partitions.

4. A computer system as recited in claim 1, further comprising restriction data defining the conditions upon which the propagation agent will transmit data.

5. A computer system as recited in claim 4, wherein the restriction data is stored as a value in an attribute of the master or slave objects.

6. A computer system as recited in claim 1, wherein the propagation agent is part of the management service.

7. A computer system as recited in claim 6, further comprising values stored with the class definition of the master object indicating the class of the one or more slave objects.

8. A computer system as recited in claim 6, further comprising values stored with the class definition of the one or more slave objects indicating the source attribute and the destination attribute.

9. A computer system as recited in claim 1, further comprising a list of the one or more slave objects, said list being stored as a value in an attribute associated with the master object.

10. A computer system as recited in claim 1, wherein each of the one or more slave objects has an associated attribute with data identifying the master object.

11. A computer system as recited in claim 1, wherein the data associated with the source attribute comprises a catalog.

12. A computer system as recited in claim 1, wherein the propagation agent comprises a detector agent and a copier agent.

13. A computer system as recited in claim 1, wherein the master and slave objects are instantiated from different classes.

14. A computer system as recited in claim 1, wherein the master object has a plurality of source attributes and each source attribute has at least one corresponding destination attribute.

15. A computer system as recited in claim 1, further comprising a policy manager controlling the conditions for transmitting data.

22. The computer system of claim 11, further comprising means for creating the catalog.

23. The computer system of claim 2, wherein the references are distinguished names.

16. A method of synchronizing data in a computer system, comprising the steps of:

a) detecting that data associated with a source attribute of a first object in a network management system has been modified, said first object having a reference for identifying the first object in the network management system;

b) determining one or more secondary objects in the network management system, each of said secondary objects being associated with the first object and comprising a unique reference for identifying the secondary object within the network management system, said reference being distinct from the reference of the first object;

c) determining whether any transmission restrictions have been defined;

d) if any transmission restrictions have been defined, waiting until such defined transmission restrictions have been satisfied; and

e) transmitting the data to a destination associated with the one or more secondary objects.

17. A method as recited in claim 16, wherein step (b) comprises reading a list of secondary objects stored as a value in an attribute of the first object.

18. A method as recited in claim 16, wherein step (c) comprises the step using restriction data stored with the first object as the transmission restrictions unless restriction data is stored with the secondary objects, in which case such later restriction data is used as the transmission restrictions.

19. A computer readable medium comprising instructions capable of performing the method of claim 16.

20. A network, comprising:

a) a first node and a second node capable of sending and receiving messages between each other over a connection, said first and second nodes both sharing a distributed directory comprising a plurality of objects;

b) a primary object in the distributed directory of a first object type being located in the first node, said primary object having a source attribute with associated data;

c) a second object in the distributed directory of a second object type being located in the second node, said second object being distinct from the first object and having a destination attribute corresponding to the source attribute;

d) identification data stored with the first object sufficient to determine said second object; and

e) a propagation agent operative to access the list, read the data associated with the source attribute, and propagate the data associated with the source attribute to the destination attribute of the second object.

21. A computer network as recited in claim 20, further comprising restriction data defining the conditions for synchronizing the data associated with the source attribute to the destination attribute of said second object.