CONTINUOUS QUERY LANGUAGE (CQL) DEBUGGER IN COMPLEX EVENT PROCESSING (CEP)

• US 20130014088A1
• Filed: 07/07/2011
• Published: 01/10/2013
• Est. Priority Date: 07/07/2011
• Status: Active Grant

• Current Assignee: Oracle International Corporation (Oracle Corporation)
• Original Assignee: Oracle International Corporation (Oracle Corporation)
• Inventors: Park, Hoyong, Hsiao, Eric, Piper, Andy
• Granted Patent: US 9,329,975 B2
• Time in Patent Office: Days
• US Class Current: 717/128
• CPC Class Codes: G06F 11/323 Visualisation of programs or trace data
• CPC Class Codes: G06F 11/3636 by tracing the execution of the program
• CPC Class Codes: G06F 8/20 Software design

Abstract

A method including receiving, at a computer system, debugging configuration information specifying a functional area of a data stream processing server to be debugged, is described. Furthermore, the method includes identifying, by the computer system, an object associated with the functional area that has been instantiated by the data stream processing server, determining, by the computer system, that tracing for the object is enabled to perform the debugging, and instantiating, by the computer system, a tracelet associated with the object. Further, the method includes stepping, by the computer system, through the tracelet associated with the object to debug the object, and displaying, by the computer system, a visual representation of debugging results associated with the object.

Claims

1. A method comprising:

receiving, at a computer system, debugging configuration information specifying a functional area of a data stream processing server to be debugged;

identifying, by the computer system, an object associated with the functional area that has been instantiated by the data stream processing server;

determining, by the computer system, that tracing for the object is enabled to perform the debugging;

instantiating, by the computer system, a tracelet associated with the object;

stepping, by the computer system, through the tracelet associated with the object to debug the object; and

displaying, by the computer system, a visual representation of debugging results associated with the object.

2. The method of claim 1, wherein enabling logging for the object comprises:

storing the debugging configuration information for the object; and

generating one or more debugging records for the object based on the debugging configuration information stored for the object.

3. The method of claim 2, wherein disabling logging for the object comprises deleting the debugging configuration information stored for the object.

4. The method of claim 1, further comprising determining that one or more breakpoints are set within the object.

5. The method of claim 4, further comprising continuing through each of the one or more breakpoints to debug the object.

6. The method of claim 1, further comprising in response to determining that tracing for the object is enabled, setting a tracing processing level.

7. The method of claim 1, wherein the stepping further comprises:

stepping over operators in the object;

stepping into data structures of the operators; and

inspecting and watching the data structures of the operators.

8. The method of claim 6, wherein a plurality of query plan objects includes an operator object and one or more data structure objects associated with the operator object.

9. The method of claim 8, wherein if logging is enabled for the operator object, logging is automatically enabled for the one or more data structure objects associated with the operator object.

10. The method of claim 1, further comprising:

identifying another object associated with the functional area, wherein the another object was instantiated by the data stream processing server subsequently to receiving the logging configuration information; and

enabling logging for the another object.

11. The method of claim 1, wherein the debugging configuration information is received from a user and is expressed as breakpoint statements.

12. The method of claim 1, wherein the debugging configuration information is received via an invocation of a Java Management Extensions (JMX) Applications Programming Interface (API).

13. A machine-readable storage medium having sets of instructions stored thereon which when executed by a machine, cause the machine to:

receive debugging configuration information specifying a functional area of a data stream processing server to be debugged;

identify an object associated with the functional area that has been instantiated by the data stream processing server;

determine that tracing for the object is enabled to perform the debugging;

instantiate a tracelet associated with the object;

step through the tracelet associated with the object to debug the object; and

display a visual representation of debugging results associated with the object.

14. The machine-readable storage medium of claim 13, wherein the sets of instructions further cause the machine to enable debugging for the object to further cause the machine to:

store the debugging configuration information for the object; and

generate one or more debugging records for the object based on the debugging configuration information stored for the object.

15. The machine-readable storage medium of claim 13, wherein the sets of instructions further cause the machine to enable debugging for the object further cause the machine to set one or more breakpoints within the object, wherein the one or more breakpoints are set within a continuous query and within data structures of the object.

16. The machine-readable storage medium of claim 13, wherein the functional area to be debugged corresponds to a type of query plan object.

17. The machine-readable storage medium of claim 13, wherein the sets of instructions further cause the machine to execute steps and breakpoints which cause a graphical representation of the object as the object is being debugged.

18. The machine-readable storage medium of claim 13, wherein the sets of instructions further cause the machine to invoke debugging of the object within a production platform.

19. A system comprising:

a processing component configured to;

receive debugging configuration information specifying a functional area of a data stream processing server to be debugged;

identify an object associated with the functional area that has been instantiated by the data stream processing server;

determine that tracing for the object is enabled to perform the debugging;

instantiate a tracelet associated with the object;

step through the tracelet associated with the object to debug the object; and

display a visual representation of debugging results associated with the object.

20. The system of claim 19, further comprising a CQL processor engine including the tracelet, wherein the CQL processor engine is in communication with the processing component.