System and method for determining and manipulating configuration information of servers in a distributed object environment

• US 5,857,102 A
• Filed: 03/14/1995
• Issued: 01/05/1999
• Est. Priority Date: 03/14/1995
• Status: Expired due to Term

• Current Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: McChesney, Roderick J., Nuyens, Gregory B.
• Primary Examiner(s): Voeltz, Emanuel Todd
• Assistant Examiner(s): CORCORAN, PETER JOSEPH
• Application Number:
  US08/403,337
• Time in Patent Office: 1,393 Days
• Field of Search: 395/700, 395/300.1, 395/651, 395/652, 395/653, 395/712
• US Class Current: 713/100
• CPC Class Codes: G06F 9/44505 Configuring for program initiating, e.g. using registry, configuration files
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 41/0853 by actively collecting configuration information or by backing up configuration information
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A computer system in a distributed object programming environment includes a number of host computers providing services to clients on a network through internally stored servers. Various types of configuration information for each server are available to clients through persistent server administrators, which are objects containing such information about individual servers. A server administrator can store such information as startup execution definitions, saved program definition, object interfaces and implementations, reaping, tracing, and logging configuration data. Being persistent and external to the server, the server administrator can manipulate and determine its information about a server in response to client requests without starting up the server, thereby facilitating system administration.

Claims

1. A computer system for accessing and manipulating configuration information about a server program within the computer system, comprising:

at least one persistent server administrator object associated with the server program, and stored within the computer system and externally to the server program, and including;

a plurality of machine readable storage structures adapted to contain configuration information of the server program;

a plurality of machine executable structures adapted to access and manipulate the machine readable storage structures without starting up the server program as a server process in the computer system, the machine readable storage structures updated to include selected configuration information during registration of the server program.

2. The computer system of claim 1 further comprising:

at least one client object executing as a client process;

wherein the server administrator object is adapted to receive invocations of the machine executable structures from a client object, and in response to the invocations, to provide selected configuration information to the client object.

3. The computer system of claim 1 further comprising:

at least one client object executing as a client process; and

a basic object adapter communicatively coupled between the client object and the server program and adapted to provide the client object access to objects within the server program, the basic object adapter further adapted to store execution configuration information of the server program to invoke the server program in response to a request from the client object;

wherein the server administrator object is adapted to receive invocations of the machine executable structures from a client object, and in response to the invocations, to update the execution configuration information of the server program stored in a basic object adapter.

4. The computer system of claim 1, further comprising:

a primary storage adapted to store the server process including objects and data; and

a processing unit adapted to execute a server and object methods, each executed server or object method being a process in the primary storage.

5. The computer system of claim 4, wherein selected ones of the structures of the server administrator object further comprise:

a process identification structure adapted to determine a process identifier of the server program process by the processing unit without invoking the server program if the server program is not currently executing; and

,

a structure adapted to store the process identifier.

6. The computer system of claim 1, wherein selected ones of the structures of the server administrator object further comprise:

a name structure adapted to determine a name for the server program, and a structure adapted to store the name;

a host name structure adapted to determine a computer name of the host computer including the associated server program, and a structure adapted to store the computer name; and

an execution definition structure adapted to determine an execution definition structure containing at least a current pathname for the server program, and a structure adapted to store the execution definition.

7. The computer system of claim 6, wherein the execution definition structure is further adapted to establish a current program definition including a current set of command line arguments and a current set of environment parameters to be used with the server program when the server program is executed, and is coupled to a structure adapted to store the current program definition.

8. The computer system of claim 7, wherein selected ones of the structures of the server administrator object further comprise:

a structure adapted to store a saved program definition for the server program, the saved program definition including a backup pathname of the server program, a backup set of command line arguments, and a backup set of environment parameters; and

,

a structure adapted to restore the current program definition with the saved program definition.

9. The computer system of claim 6, wherein the execution definition structure is further adapted to determine a pathname of a data directory associated with the server program.

10. The computer system of claim 1, wherein selected ones of the structures of the server administrator object further comprise:

a structure adapted to determine whether the server program associated with the server administrator is executing without invoking the server program if the server is not currently executing; and

,

a structure adapted to store a value indicative of whether the server program is executing.

11. The computer system of claim 1, wherein selected ones of the structures of the server administrator object further comprise:

a structure adapted to establish a hold down value in an execution definition of the server program used to invoke the server program; and

,

a structure adapted to store the hold down value.

12. The computer system of claim 1, wherein the machine executable structures of the server administrator object further comprise:

a structure adapted to interpose an executable application for the server program when the server program is invoked; and

,

a structure adapted to store a program definition for the executable application, including a pathname for the executable application, and a set of command line arguments.

13. The computer system of claim 1, wherein:

the server program further includes a machine executable deallocation structure adapted to automatically deallocate idle objects within the server program when the server is executing as a process, the machine executable deallocation structure operating according to selected ones of the machine readable storage structures in the server administrator object;

wherein the selected ones of the machine readable storage structures include;

a first attribute that enables or disables the machine executable deallocation structure;

a second attribute that establishes a cycle time for the machine executable deallocation structure; and

,

a third attribute that establishes an maximum time interval for which the server program can be idle, such that the server program is automatically shutdown by machine executable deallocation structure after a time interval equal to or exceeding the maximum time interval;

and wherein selected ones of the machine executable structures of the server administrator object establish selected ones of the first, second, and third attributes.

14. The computer system of claim 1, wherein:

the computer system includes a machine executable logging structure adapted to log information regarding the execution of the server program, the machine executable logging structure operating according to selected ones of the machine readable storage structures in the server administrator object;

wherein the selected ones of the machine readable storage structures include;

a first attribute that enables or disables logging by an operating system process; and

a second attribute that identifies at least one log file used by the machine executable logging structure to store information, and that establishes a maximum file size for the log file;

and wherein selected ones of the machine executable structures of the server administrator object establish selected ones of the first, and second attributes.

15. The computer system of claim 1, wherein selected ones of the machine readable storage structures of the server administrator object further include:

a structure adapted to store an interval value indicative of a frequency for the server program to send a signal to the server administrator to indicate that the server program is currently executing; and

,

a structure adapted to store a maximum value indicative of a maximum number of signals that the server administrator may not receive prior to initiating a process to determine whether the server program is currently executing.

16. The computer system of claim 1, wherein:

the server program further includes at least one tracing facility;

the computer system further includes a machine executable tracing structure adapted to output conditional information according to at least one tracing facility in the server program; and

selected ones of the machine executable structures of the server administrator object further comprise;

a structure adapted to define a tracing configuration including a tracing facility and a set of trace flags, and a structure adapted to store the tracing configuration; and

,

a structure adapted to update the tracing facilities in the server program with tracing facilities stored in the server administrator.

17. The computer system of claim 16, wherein selected ones of the machine executable structures include:

a structure that enables at least one trace flag in a specified tracing facility; and

,

a structure that disables at least one trace flag in a specified tracing facility.

18. The computer system of claim 1, wherein selected ones of the machine executable structures include:

a structure adapted to store an identification of each object interface provided by the server program; and

,

a structure adapted to store an identification of each object implementation in the server program that implements an object interface.

19. A method for determining and manipulating current configuration information for a server program on a host computer, the method comprising the steps of:

creating an instance of a persistent first object in the host computer;

associating the first object with the server program during installation of the server program, the first object having access to current configuration information of the server program;

receiving by the first object a request from a client for current configuration information about the server program;

executing the first object on the host computer without invoking the server program when the server program is not executing as a process on the host computer to obtain the current configuration information; and

returning the current configuration information to the client.

20. The method of claim 19, further comprising the step of:

storing in the first object current configuration information upon registration of the server program; and

updating selected stored current configuration information each time the server program is executed as a process on the host computer.

21. The method of claim 19, further comprising the steps of:

receiving by the first object a request from a client for current process information about the server program; and

invoking from the first object a second object internal to the server program to obtain the process information.

22. The method of claim 19, wherein the first object is a server administrator object.

23. The method of claim 19, further comprising the steps of:

determining an execution definition for the server program; and

,

storing the execution definition in the first object.

24. The method of claim 23, wherein the execution definition includes a program definition, the method further comprising the steps of:

storing a saved program definition for the server program in the first object;

altering the execution definition to provide a new program definition, and,

restoring the saved program definition into the execution definition.

25. The method of claim 23, further comprising the steps of:

storing a hold down value in the execution definition; and

suppressing execution of the server program according to the hold down value when the server program is invoked by a client.

26. The method of claim 19, further comprising the steps of:

invoking a pseudo object to determine if the server program is currently executing;

returning a process identifier if the server program is executing; and

,

storing a value indicating that the server program is executing.

27. The method of claim 19, further comprising the steps of:

storing a program definition for an executable application in an execution definition of the server program in the first object; and

interposing the executable application according to the program definition when the server program is invoked by a client.

28. The method of claim 19, further comprising the steps of:

storing in the first object an attribute for enabling or disabling a process for automatically deallocating idle objects within the server;

storing in the first object an attribute for establishing a cycle time for the process;

storing in the first object an attribute for establishing a maximum time interval for which the server program can be idle before the server program is shutdown by the process; and

shutting down the server program when the maximum time interval is equaled or exceeded.

29. The method of claim 19, further comprising the steps of:

storing in the first object an attribute for enabling or disabling logging by an operating system process;

storing in the first object an attribute for identifying at least one log file for storing information; and

,

storing in the first object an attribute for establishing a maximum file size for the log file.

30. The method of claim 19, further comprising the steps of:

storing in the first object an interval value indicative of a frequency for the server program to send a signal to the first object to indicate that the server program is currently executing;

storing in the first object a maximum value indicative of a maximum number of signals that the first object may not receive prior to initiating a process to determine whether the server program is currently executing; and

initiating a process from the first object to determine whether the server program is currently executing if the first object does not receive a number of signals equal to or exceeding the maximum number of signals.

31. The method of claim 19, further comprising the steps of:

determining a tracing configuration including at least one tracing facility and a set of trace flags in the server;

storing in the first object the tracing configuration; and

periodically updating the tracing facilities in the server program with tracing facilities stored in the first object.

32. The method of claim 31, further comprising the step of:

selectively enabling at least one trace flag in a specified tracing facility in the first object.

33. The method of claim 19, further comprising the steps of:

storing in the first object an identification of each object interface provided by the server program; and

,

storing in the first object an identification of each object implementation in the server program that implements a object interface.