Tuscany Example: Modified Calculator

1
Tuscany Example Modified Calculator

• Cristian Fiorentino
• cristian.fiorentino_at_intel.com
• March 9, 2007

2
Intention

• Show Tuscany
• multi-language support on writing services
• different transport bindings
• simplicity on changing among services
  implementations

3
Scenario

• A client needs to access to simple calculator
  operations , -, , /
• We have different implementations of the
  calculator
• Java (local to client)
• Ruby (local to client)
• RMI invocation (remote)
• WS (running remotely on Tomcat)
• To distinguish among results, operations are
  performed in different ways for different
  languages
• Java operation 2
• Ruby operation 1
• RMI operation 4
• WS operation 3

4
All Changes Just into a SCDL Definition

SCDL1
Java
Component
5
All Changes Just into a SCDL Definition

SCDL2
Rubi
Component
6
All Changes Just into a SCDL Definition

Component
RMI
SCDL3
7
All Changes Just into a SCDL Definition

Component
WS
SCDL4
8
SCDL Definition (client)

• ltcomponent name"CalculatorServiceComponent"gt
• ltimplementation.java class"calculator.Calculat
  orServiceImpl"/gt
• ltreference name"calculatorService"gt??lt/re
  ferencegt
• lt/componentgt

Comp
_at_Reference CalculatorService calculatorService
lt!-- ltcomponent name"CalculatorComponent"
gt ltimplementation.java class"calculator.J
avaCalculator"/gt ltrbimplementation.rb
script"CalculatorImpl.rb" class"CalculatorImpl"/
gt lt/componentgt ltreference
name"CalculatorRmiService"gt
ltinterface.java interface"calculator.CalculatorSe
rvice"/gt ltrmibinding.rmi
host"localhost" port"9999" serviceName"rmiCalcu
lator"/gt lt/referencegt ltreference
name"CalculatorWSService"gt
ltinterface.wsdl xmlnswsdli"http//www.w3.org/200
6/01/wsdl-instance" interface"http//cal
culatorwsdl.interface(Calculator)"
wsdliwsdlLocation"http//calculator
wsdl/calculator.wsdl" /gt ltbinding.ws
endpoint"http//calculatorwsdl.endpoint
(CalculatorService/ CalculatorServiceSOAP11port)"
location"wsdl/calculator.wsdl" /gt
lt/referencegt --gt
9
1) Java Implementation
Calculator Service (interface ,-,,/)
Calculator Component
Client
Java Implementation
10
SCDL Definition for Java Implementation

• ltcomponent name"CalculatorServiceComponent"gt
• ltimplementation.java class"calculator.Calculat
  orServiceImpl"/gt
• ltreference name"calculatorService"gt
  CalculatorComponent lt/referencegt
• lt/componentgt
• ltcomponent name"CalculatorComponent"gt
• ltimplementation.java class"calculator.Jav
  aCalculator"/gt
• lt!--rbimplementation.rb
  script"CalculatorImpl.rb" class"CalculatorImpl"/
  --gt
• lt/componentgt
• lt!--
• ltreference name"CalculatorRmiService"gt
• ltinterface.java interface"calculator.Calc
  ulatorService"/gt
• ltrmibinding.rmi host"localhost"
  port"9999" serviceName"rmiCalculator"/gt
• lt/referencegt
• ltreference name"CalculatorWSService"gt
• ltinterface.wsdl xmlnswsdli"http//www.w3
  .org/2006/01/wsdl-instance"

11
2) Ruby Implementation
Calculator Service (interface ,-,,/)
Calculator Component
Client
Ruby Implementation
12
SCDL Definition for Ruby Implementation

• ltcomponent name"CalculatorServiceComponent"gt
• ltimplementation.java class"calculator.Calculat
  orServiceImpl"/gt
• ltreference name"calculatorService"gt
  CalculatorComponent lt/referencegt
• lt/componentgt
• ltcomponent name"CalculatorComponent"gt
• lt!--implementation.java
  class"calculator.JavaCalculator"/--gt
• ltrbimplementation.rb script"CalculatorIm
  pl.rb" class"CalculatorImpl"/gt
• lt/componentgt
• lt!--
• ltreference name"CalculatorRmiService"gt
• ltinterface.java interface"calculator.Calc
  ulatorService"/gt
• ltrmibinding.rmi host"localhost"
  port"9999" serviceName"rmiCalculator"/gt
• lt/referencegt
• ltreference name"CalculatorWSService"gt
• ltinterface.wsdl xmlnswsdli"http//www.w3
  .org/2006/01/wsdl-instance"

13
3) RMI Implementation
Calculator Service (interface ,-,,/)
Calculator
client
RMI binding
Reference
14
SCDL Definition for RMI

• ltcomponent name"CalculatorServiceComponent"gt
• ltimplementation.java class"calculator.Calculat
  orServiceImpl"/gt
• ltreference name"calculatorService"gt
  CalculatorRmiService lt/referencegt
• lt/componentgt
• lt!--
• ltcomponent name"CalculatorComponent"gt
• ltimplementation.java class"calculator.Jav
  aCalculator"/gt
• ltrbimplementation.rb script"CalculatorIm
  pl.rb" class"CalculatorImpl"/gt
• lt/componentgt
• --gt
• ltreference name"CalculatorRmiService"gt
• ltinterface.java interface"calculator.Calc
  ulatorService"/gt
• ltrmibinding.rmi host"localhost"
  port"9999" serviceName"rmiCalculator"/gt
• lt/referencegt
• lt!--
• ltreference name"CalculatorWSService"gt
• ltinterface.wsdl xmlnswsdli"http//www.w3
  .org/2006/01/wsdl-instance"

15
4) WS Implementation
Calculator Service (interface ,-,,/)
Calculator
client
Web Services binding
WebAppruntime
WSDL
Reference
16
SCDL Definition for WS

• ltcomponent name"CalculatorServiceComponent"gt
• ltimplementation.java class"calculator.Calculat
  orServiceImpl"/gt
• ltreference name"calculatorService"gtCalcul
  atorWSServicelt/referencegt
• lt/componentgt
• lt!--
• ltcomponent name"CalculatorComponent"gt
• ltimplementation.java class"calculator.Jav
  aCalculator"/gt
• ltrbimplementation.rb script"CalculatorIm
  pl.rb" class"CalculatorImpl"/gt
• lt/componentgt
• ltreference name"CalculatorRmiService"gt
• ltinterface.java interface"calculator.Calc
  ulatorService"/gt
• ltrmibinding.rmi host"localhost"
  port"9999" serviceName"rmiCalculator"/gt
• lt/referencegt
• --gt
• ltreference name"CalculatorWSService"gt

17
WS/RMI Calculator Implementation
Zoom In

Calculator
-

/
Calculator Service (interface ,-,,/)