1. QoS Lifecycle
Web Services’
in

2. Search for
existing ones
Web Service
Fr om
s c r a t c h

3. not
There are many web services with the
same NonFunctional capabilities

4. Service selection

5. Service selection

6. Service selection

7. Service selection

8. 0.42 s
99.65%
0$
0.31 s
99.45%
0$
0.55 s
96.75%
5$
0.28 s
99.91%
2.5 $
1.22 s
95.05%
1.5 $
Service selection

9. 0.85
0.95
1
0.97
0.91
1
0.71
0.35
0
1
1
0.5
0
0
0.7
Service selection

10. Weight:
0.3
Service selection
0.5
0.2

11. 0.3
0.5
0.2
0.85
0.95
1
0.97
0.91
1
0.71
0.35
0
1
1
0.5
0
0
0.7
Service selection

12. Overall result
0.978
0.991
0.406
0.950
0.140
Service selection

13. 0.991
Service selection

14. Service Level Agreements

15. WS-Agreement
SLA standard (in the academia)
Service Level Agreements

16. Service Level Agreements

17. Name, id
Service Level Agreements

18. Name, id
Context
Service Level Agreements

19. Name, id
Context
Terms:
Service Level Agreements

20. Name, id
Context
Terms:
- Service description terms
Las presentes condiciones generales regulan los Servicios Telemáticos Financieros indicados en las condiciones particulares (en
adelante, “el Servicio”), así como el procedimiento de utilización del mismo por el Titular para la realización de las operaciones
que integren en cada momento el Servicio. Los Servicios Telemátios Financeros a los que el titular puede accedir quedan
establecidos en la relación contendia en las Condiciones Particulares del presente contrato. Los Servicios Telemáticos Financieros
ofrecidoos podran ser modificados por el Titular en cualquier momento,
Service Level Agreements

21. Name, id
Context
Terms:
- Service description terms
Las presentes condiciones generales regulan los Servicios Telemáticos Financieros indicados en las condiciones particulares (en
adelante, “el Servicio”), así como el procedimiento de utilización del mismo por el Titular para la realización de las operaciones
que integren en cada momento el Servicio. Los Servicios Telemátios Financeros a los que el titular puede accedir quedan
establecidos en la relación contendia en las Condiciones Particulares del presente contrato. Los Servicios Telemáticos Financieros
ofrecidoos podran ser modificados por el Titular en cualquier momento,
- Guarantee terms
Podrá establecer límites de disposición para operaciones que impliquen disponibilidad o movimiento de fondos, límites que
podran ser de distintos importes en función del Servicio Telematico Financiero a través del que se opere. Podrá modificar estos
límites de disposicion cuando lo estime necesario, prévia comunicación al titular que podrá realizarse a través del propio Servicio
Telemático
Service Level Agreements

22. Guarantee terms
Service scope
Qualifying condition
Service Level Objective
Business value List
Service Level Agreements

23. Guarantee terms
Service scope
Qualifying condition
Service Level Objective
Business value List
Service Level Agreements

24. Guarantee terms
Service scope
Qualifying condition
Service Level Objective
Business value List
Service Level Agreements

25. Guarantee terms
Service scope
Qualifying condition
Service Level Objective
Business value List
Service Level Agreements

26. Guarantee terms
Service scope
Qualifying condition
Service Level Objective
Business value List
Service Level Agreements

27. Name, id
Context
Terms:
- Service description terms
Las presentes condiciones generales regulan los Servicios Telemáticos Financieros indicados en las condiciones particulares (en
adelante, “el Servicio”), así como el procedimiento de utilización del mismo por el Titular para la realización de las operaciones
que integren en cada momento el Servicio. Los Servicios Telemátios Financeros a los que el titular puede accedir quedan
establecidos en la relación contendia en las Condiciones Particulares del presente contrato. Los Servicios Telemáticos Financieros
ofrecidoos podran ser modificados por el Titular en cualquier momento,
- Guarantee terms
Podrá establecer límites de disposición para operaciones que impliquen disponibilidad o movimiento de fondos, límites que
podran ser de distintos importes en función del Servicio Telematico Financiero a través del que se opere. Podrá modificar estos
límites de disposicion cuando lo estime necesario, prévia comunicación al titular que podrá realizarse a través del propio Servicio
Telemático
Service Level Agreements

28. Self Adaptive Service Based Systems

29. Web service
Web service
Web service
Database
Web service
Self Adaptive Service Based Systems

30. Web service
Web service
Web service
Database
Web service
Self Adaptive Service Based Systems

31. Web service
Web service
!
Web service
Web service
Database
Web service
Self Adaptive Service Based Systems

32. Web service
Web service
Web service
!
Web service
Web service
Database
Web service
Self Adaptive Service Based Systems

33. Challenges
Method_x
Param 1,
Param 2,
...
param N
≠
Method_y
Param 1,
Param 2,
...
Param M
Self Adaptive Service Based Systems

34. Challenges
Self Adaptive Service Based Systems

35. Monitor

36. Monitoring
Web Services

38. Online testing

39. Passive monitoring

41. Online testing

42. The malfunction of a service can be
detected before the user tries to use it
Online testing

43. You can control the number
of measurements per time
Online testing

44. You can test the behaviour of
the system at stressful situations
Online testing

45. Passive monitoring

46. You get the QoS
of real requests
Passive monitoring

47. it’s less intrusive
Passive monitoring

48. Can get the QoS of more services:
stateful and non-free services
Passive monitoring

49. How do they work?

50. tester
Online testing
service

51. client
Passive monitoring
service

52. client
Code
Client
engine
Passive monitoring
Service
messages
Service
Engine
Service
Code

53. client
Code
Client
engine
Service
messages
Monitors inside the code
Passive monitoring
Service
Engine
Service
Code

54. void processNextStep() {
boolean isBorderTouched = false;
// Generate new location of snake head.
int newHeadLocX = (int) snakeBodyPart[0].getLocation().getX() + directionX;
int newHeadLocY = (int) snakeBodyPart[0].getLocation().getY() + directionY;
// Most last part of the snake is food.
int foodLocX = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getX();
int foodLocY = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getY();
// Check does snake cross the border of the board?
if (newHeadLocX >= BOARD_WIDTH - SNAKE_BODY_PART_SQURE) {
newHeadLocX = 0;
isBorderTouched = true;
} else if (newHeadLocX <= 0) {
newHeadLocX = BOARD_WIDTH - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
} else if (newHeadLocY >= BOARD_HEIGHT - SNAKE_BODY_PART_SQURE) {
newHeadLocY = 0;
isBorderTouched = true;
} else if (newHeadLocY <= 0) {
newHeadLocY = BOARD_HEIGHT - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
}
// Check has snake touched the food?
if (newHeadLocX == foodLocX && newHeadLocY == foodLocY) {
// Set score.
score += 5;
scoreViewer.setText("Score==>" + score);
// Check bonus food should be given or not?
if (score % 50 == 0 && !isBonusFoodAvailable) {
createBonusFood();
}
// Create new food.
createFood();
}
// Check has snake touched the bonus food?
if (isBonusFoodAvailable &&
pointOfBonusFood.x <= newHeadLocX &&
pointOfBonusFood.y <= newHeadLocY &&
(pointOfBonusFood.x + SNAKE_BODY_PART_SQURE) >= newHeadLocX &&
(pointOfBonusFood.y + SNAKE_BODY_PART_SQURE) >= newHeadLocY) {
board.remove(bonusfood);
score += 100;
scoreViewer.setText("Score ==>" + score);
isBonusFoodAvailable = false;

55. void processNextStep() {
boolean isBorderTouched = false;
// Generate new location of snake head.
int newHeadLocX = (int) snakeBodyPart[0].getLocation().getX() + directionX;
int newHeadLocY = (int) snakeBodyPart[0].getLocation().getY() + directionY;
// Most last part of the snake is food.
int foodLocX = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getX();
int foodLocY = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getY();
// Check does snake cross the border of the board?
if (newHeadLocX >= BOARD_WIDTH - SNAKE_BODY_PART_SQURE) {
newHeadLocX = 0;
isBorderTouched = true;
} else if (newHeadLocX <= 0) {
newHeadLocX = BOARD_WIDTH - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
} else if (newHeadLocY >= BOARD_HEIGHT - SNAKE_BODY_PART_SQURE) {
newHeadLocY = 0;
isBorderTouched = true;
} else if (newHeadLocY <= 0) {
newHeadLocY = BOARD_HEIGHT - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
}
// Check has snake touched the food?
if (newHeadLocX == foodLocX && newHeadLocY == foodLocY) {
// Set score.
score += 5;
scoreViewer.setText("Score==>" + score);
// Check bonus food should be given or not?
if (score % 50 == 0 && !isBonusFoodAvailable) {
createBonusFood();
}
// Create new food.
createFood();
}
// Check has snake touched the bonus food?
if (isBonusFoodAvailable &&
pointOfBonusFood.x <= newHeadLocX &&
pointOfBonusFood.y <= newHeadLocY &&
(pointOfBonusFood.x + SNAKE_BODY_PART_SQURE) >= newHeadLocX &&
(pointOfBonusFood.y + SNAKE_BODY_PART_SQURE) >= newHeadLocY) {
board.remove(bonusfood);
score += 100;
scoreViewer.setText("Score ==>" + score);
isBonusFoodAvailable = false;
Monitoring code
Monitoring code
Monitoring code

56. Aspect Oriented Programming
code weaving

57. void processNextStep() {
boolean isBorderTouched = false;
// Generate new location of snake head.
int newHeadLocX = (int) snakeBodyPart[0].getLocation().getX() + directionX;
int newHeadLocY = (int) snakeBodyPart[0].getLocation().getY() + directionY;
// Most last part of the snake is food.
int foodLocX = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getX();
int foodLocY = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getY();
// Check does snake cross the border of the board?
if (newHeadLocX >= BOARD_WIDTH - SNAKE_BODY_PART_SQURE) {
newHeadLocX = 0;
isBorderTouched = true;
} else if (newHeadLocX <= 0) {
newHeadLocX = BOARD_WIDTH - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
} else if (newHeadLocY >= BOARD_HEIGHT - SNAKE_BODY_PART_SQURE) {
newHeadLocY = 0;
isBorderTouched = true;
} else if (newHeadLocY <= 0) {
newHeadLocY = BOARD_HEIGHT - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
}
// Check has snake touched the food?
if (newHeadLocX == foodLocX && newHeadLocY == foodLocY) {
// Set score.
score += 5;
scoreViewer.setText("Score==>" + score);
// Check bonus food should be given or not?
if (score % 50 == 0 && !isBonusFoodAvailable) {
createBonusFood();
}
// Create new food.
createFood();
}
// Check has snake touched the bonus food?
if (isBonusFoodAvailable &&
pointOfBonusFood.x <= newHeadLocX &&
pointOfBonusFood.y <= newHeadLocY &&
(pointOfBonusFood.x + SNAKE_BODY_PART_SQURE) >= newHeadLocX &&
(pointOfBonusFood.y + SNAKE_BODY_PART_SQURE) >= newHeadLocY) {
board.remove(bonusfood);
score += 100;
scoreViewer.setText("Score ==>" + score);
isBonusFoodAvailable = false;
Monitoring code
Monitoring code
Monitoring code

58. void processNextStep() {
boolean isBorderTouched = false;
// Generate new location of snake head.
int newHeadLocX = (int) snakeBodyPart[0].getLocation().getX() + directionX;
int newHeadLocY = (int) snakeBodyPart[0].getLocation().getY() + directionY;
// Most last part of the snake is food.
int foodLocX = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getX();
int foodLocY = (int) snakeBodyPart[totalBodyPart - 1].getLocation().getY();
Monitoring code
// Check does snake cross the border of the board?
if (newHeadLocX >= BOARD_WIDTH - SNAKE_BODY_PART_SQURE) {
newHeadLocX = 0;
isBorderTouched = true;
} else if (newHeadLocX <= 0) {
newHeadLocX = BOARD_WIDTH - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
} else if (newHeadLocY >= BOARD_HEIGHT - SNAKE_BODY_PART_SQURE) {
newHeadLocY = 0;
isBorderTouched = true;
} else if (newHeadLocY <= 0) {
newHeadLocY = BOARD_HEIGHT - SNAKE_BODY_PART_SQURE;
isBorderTouched = true;
}
Monitoring code
// Check has snake touched the food?
if (newHeadLocX == foodLocX && newHeadLocY == foodLocY) {
// Set score.
score += 5;
scoreViewer.setText("Score==>" + score);
// Check bonus food should be given or not?
if (score % 50 == 0 && !isBonusFoodAvailable) {
createBonusFood();
}
// Create new food.
createFood();
}
Monitoring code
// Check has snake touched the bonus food?
if (isBonusFoodAvailable &&
pointOfBonusFood.x <= newHeadLocX &&

59. client
Code
Client
engine
Service
messages
Monitors inside the code
Passive monitoring
Service
Engine
Service
Code

60. client
Code
Client
engine
Service
messages
Monitors inside
the engine
Passive monitoring
Service
Engine
Service
Code

61. step1
step2
Step3
step4

62. step1
Step2
Monitor
code
Step3
step4

63. client
Code
Client
engine
Service
messages
Monitors inside
the engine
Passive monitoring
Service
Engine
Service
Code

64. client
Code
Client
engine
Service
messages
Monitors the message
Passive monitoring
Service
Engine
Service
Code

65. client
Code
Client
engine
Service
messages
ENTERPRISE SERVICE BUS
Passive monitoring
Service
Engine
Service
Code

66. client
Code
Service
Engine
Client
engine
ENTERPRISE SERVICE BUS
Passive monitoring
Service
Code

67. This is what we do

68. SALMon

69. SALMon’s Features

70. passive monitoring + online testing
SALMon’s Features

71. Extensible with new metrics
SALMon’s Features

72. Extensible with new types of services
SALMon’s Features

73. Several mechanisms to retrieve the QoS
SALMon’s Features

74. Easily interoperable
SALMon’s Features

76. To conclude...

77. 1
Activities in the service lifecycle:
- Service selection
- Service level agreement
- Service adaptation
2
Monitoring
- Online testing
- Passive monitoring
3
SALMon

78. Questions
&Answers