System and method for implementing a dynamic logger

• US 20040153878A1
• Filed: 01/30/2003
• Published: 08/05/2004
• Est. Priority Date: 01/30/2003
• Status: Abandoned Application

• Current Assignee: Wind River Systems Incorporated (Aptiv PLC)
• Original Assignee: Wind River Systems Incorporated (Aptiv PLC)
• Inventors: Goddard, Ted, White, Calvin, Bromwich, Julian
• Application Number:
  US10/355,958
• Publication Number:
  US 20040153878A1
• Time in Patent Office: Days
• US Class Current: 714/48
• CPC Class Codes: G06F 11/3636 by tracing the execution of the program

Abstract

A logger system, comprising a core component configured to receive a log statement from an application program, the log statement including a group identifier and a level identifier, the core component further configured to direct a log report generated from the log statement to an output stream based on the group identifier and the level identifier of the log statement and log controls accessible to the core component.

Claims

1. A logger system, comprising:

a core component configured to receive a log statement from an application program, the log statement including a group identifier and a level identifier, the core component further configured to direct a log report generated from the log statement to an output stream based on the group identifier and the level identifier of the log statement and log controls accessible to the core component.

2. The logger system according to claim 1, further comprising:

a management component plugged into the core component and configured to present an interface to a developer to configure the system.

3. The logger system according to claim 2, wherein the developer inputs the log controls via the management component.

4. The logger system according to claim 3, wherein the developer inputs the log controls during the run-time execution of the application program.

5. The logger system according to claim 2, wherein the management component is a graphical user interface.

6. The logger system according to claim 1, wherein the output stream includes:

a formatter component plugged into the core component and configured to format the log report; and

a device component plugged into the core component and configured to output the log report to a specified location.

7. The logger system according to claim 6, wherein the formatter component includes one of an HTML formatter, a text string formatter, a plain text formatter, a binary formatter, an ASCII formatter, and a text delimited formatter.

8. The logger system according to claim 6, wherein the device component includes one of a file, a printer, a standard 1/O, and a socket.

9. The logger system according to claim 1, wherein the log controls include a log entry which includes a group, a level and the output stream and wherein the core component directs the log report to the output stream when the group of the log entry includes the group identifier of the log statement and the level of the log entry includes the level identifier of the log statement.

10. The logger system according to claim 1, wherein the core component operations occur in a same execution thread as the application program.

11. The logger system according to claim 1, further comprising:

a task component plugged into the core component and configured to allow the core component operations to occur in a different execution thread than the application program.

12. The logger system according to claim 11, wherein the core component operations are stored in a queue while the application program thread is executing.

13. The logger system according to claim 1, wherein the group identifier and the level identifier is definable by a developer.

14. A method comprising the steps of:

receiving a log statement from an application program, the log statement including a group identifier and a level identifier;

accessing a log control which includes a group, a level and an output stream;

comparing the group identifier and level identifier of the log statement to the corresponding group and level of the log control; and

directing a log report generated from the log statement to the output stream when the group of the log control includes the group identifier of the log statement and the level of the log control includes the level identifier of the log statement.

15. The method according to claim 14, further comprising:

inserting additional log controls when the application program is executing; and

repeating the above steps for the additional log controls.

16. The method according to claim 14, wherein the output stream includes a formatter component and a device component.

17. The method according to claim 14, wherein the method steps are performed in a same execution thread as the application program.

18. A system, comprising:

a log control component including log entry data, wherein each log entry includes a group, a level and an output stream; and

an arbitrator component receiving a log statement from an application program, the log statement including a group identifier and a level identifier, the arbitrator accessing each log entry and directing a log report generated from the log statement to the output stream of each log entry for which the group of the log entry includes the group identifier of the log statement and the level of the log entry includes the level identifier of the log statement.

19. The system according to claim 18, wherein each output stream includes a formatter component and a device component.

20. The system according to claim 18, wherein a single instance of the formatter component is included in multiple output streams.