and Economics
Department of Control Engineering and
Information Technology
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Tracing CORBA applications using interceptors презентация
Содержание
- 1. Tracing CORBA applications using interceptors
- 2. Contents 1. Motivation 2. Tracing in general 3. Interceptors 4. Tracing using interceptors 5. Conclusion
- 3. Motivation 1. Technical development: Distributed, heterogeneous environment Object-oriented integration → CORBA
- 4. Motivation 2. Applications: e-Business Embedded systems
- 5. Motivation 3. Growing competition: Functional and reliability requirements Time-to-market pressure
- 6. Contents 1. Motivation 2. Tracing in general 3. Interceptors 4. Tracing using interceptors 5. Conclusion
- 7. Tracing vs. debugging
- 8. Aims of tracing (use cases) 1. Checking
- 9. Current tracing mechanisms Current solutions are bound
- 10. Current tracing mechanisms State of the art
- 11. Contents 1. Motivation 2. Tracing in general 3. Interceptors 4. Tracing using interceptors 5. Conclusion
- 12. CORBA interceptor An object implementing the interceptor
- 13. Callback methods methodX() methodX() Client Server
- 14. Definitions & implementations First definition: CORBA 2.3
- 15. Other possible solutions Smart proxies Servant managers Pluggable protocols ORB event handlers …
- 16. Contents 1. Motivation 2. Tracing in general 3. Interceptors 4. Tracing using interceptors 5. Conclusion
- 17. Tracing using interceptors send_request() receive_request() send_reply() receive_reply()
- 18. The resulting architecture Automatic instrumentation
- 19. Overhead In interactive mode: ~ 500 % communication overhead In local mode: ~ 15 %
- 20. Contents 1. Motivation 2. Tracing in general 3. Interceptors 4. Tracing using interceptors 5. Conclusion
- 21. Results A tracing architecture satisfying the
- 22. Future plans Improving interoperability Extending the architecture
- 23. Tracing CORBA applications using interceptors Zoltán
Contents 1. Motivation 2. Tracing in general 3. Interceptors 4. Tracing using interceptors 5. Conclusion
Слайд 1Tracing CORBA applications using interceptors
Zoltán Mann
Supervisor: Dr. Károly Kondorosi
Budapest University
of Technology
and Economics
Department of Control Engineering and
Information Technology
and Economics
Department of Control Engineering and
Information Technology
Слайд 2Contents
1. Motivation
2. Tracing in general
3. Interceptors
4. Tracing using interceptors
5. Conclusion
Слайд 3Motivation
1. Technical development:
Distributed, heterogeneous environment
Object-oriented integration → CORBA
Слайд 5Motivation
3. Growing competition:
Functional and reliability requirements
Time-to-market pressure
Слайд 6Contents
1. Motivation
2. Tracing in general
3. Interceptors
4. Tracing using interceptors
5. Conclusion
Слайд 8Aims of tracing (use cases)
1. Checking correct behaviour
2. Locating bugs
3. Better
understanding of how the system works
5. Automatic documentation extraction
6. Performance analysis, identifying bottlenecks
4. Monitoring crucial applications
Слайд 9Current tracing mechanisms
Current solutions are bound to particular programming languages.
Synchronization,
lack of global clock etc.
Heterogeneity
Collecting information from different namespaces
Problems with distributed systems:
Слайд 10Current tracing mechanisms
State of the art in distributed systems:
+ Central tracer
–
Manual instrumentation
– Extra programming work
– Prone to errors
Слайд 11Contents
1. Motivation
2. Tracing in general
3. Interceptors
4. Tracing using interceptors
5. Conclusion
Слайд 12CORBA interceptor
An object implementing the interceptor interface
without actually modifying the
ORB
using callback methods
extending the functionality of the ORB
Слайд 14Definitions & implementations
First definition: CORBA 2.3
Incompatible implementations
September 1998: OMG RFP
December 1999:
Joint Submission
March 2000: CORBA 3.0 Working Draft
The used implementation: TAO 1.1 and 1.1.9 beta
March 2000: CORBA 3.0 Working Draft
The used implementation: TAO 1.1 and 1.1.9 beta
Слайд 16Contents
1. Motivation
2. Tracing in general
3. Interceptors
4. Tracing using interceptors
5. Conclusion
Слайд 18The resulting architecture
Automatic instrumentation
Open system
Until then: a slight
modification of the ORB
With the standard registration mechanism of interceptors, even that could be avoided
One single line of initialization code per name space
Слайд 20Contents
1. Motivation
2. Tracing in general
3. Interceptors
4. Tracing using interceptors
5. Conclusion
Слайд 21Results
A tracing architecture satisfying the previously defined requirements
A tool
for documenting and interactive tracing of CORBA applications
The solution works in a distributed and heterogeneous environment
Prototype of a future product
The solution works in a distributed and heterogeneous environment
Prototype of a future product
Слайд 22Future plans
Improving interoperability
Extending the architecture for other middleware systems, such as
DCOM
Improving user interface, with the inclusion of possible users
Making the tracer persistent
…
Improving user interface, with the inclusion of possible users
Making the tracer persistent
…
Слайд 23Tracing CORBA applications using interceptors
Zoltán Mann
Supervisor: Dr. Károly Kondorosi
Budapest University
of Technology
and Economics
Department of Control Engineering and
Information Technology
and Economics
Department of Control Engineering and
Information Technology
