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-Domain Webapp Sample

-====================

-

-Not actually a webapp just yet as webapp host need to use the new domain for it to work.

-If you run the DomainServer in a debugger you will get a server that provides a registry 

-for servide URLs, listens for Nodes starting and stopping and provides a web page where 

-you can see what nodes are registered and pull up their web pages.

-

-Use the nodes from the calculator-distributed to register with this domain

-

-

-==========================================

-Below copied from calculator sample as a template for when this gets done 

-

-

-This sample implements a simple calculator using SCA components.  It uses 

-exactly the same calculator application classes as the calculator sample but 

-runs the application distributed across three nodes.

-

-A node in this sample means an instance of the Tuscany SCA java runtime running

-in a Java virtual machine. 

-

-The README in the samples directory (the directory above this) provides 

-general instructions about building and running samples. Take a look there 

-first. 

-

-If you just want to run it to see what happens open four command prompts and 

-navigate to this sample directory in each one. There is one command to be run 

-in each command prompt:

-

-ant runDomainNode

-ant runNodeB

-ant runNodeC

-ant runNodeA

-

-Please run the commands in this order. 

-

-OR if you don't have ant, on Windows use

-

-java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.DomainNode

-java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.CalculatorNode mydomain nodeB

-java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.CalculatorNode mydomain nodeC

-java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.CalculatorNode mydomain nodeA

-

-and on *nix do

-

-java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.DomainNode

-java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.CalculatorNode mydomain nodeB

-java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.CalculatorNode mydomain nodeC

-java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.CalculatorNode mydomain nodeA

-

-

-The processes started on each of these command prompts can be ended by pressing 

-the <Enter> key.

-

-

-Sample Overview

----------------

-The sample provides a single calculator service with a default SCA (java) 

-binding. NodeA exercises this interface by calling add, subtract, multiply and 

-divide operations. 

-

-In the case of add and subtract the runtime recognises that

-it can't find these services locally and, using the remote (web services) 

-version of the default SCA binding contacts the add service running in NodeB 

-and the subtract service running in NodeC. 

-

-On the command prompt where you started NodeA, you would see output of invoking the 

-calculator functions distributed over NodeB and and NodeC.  On the command prompts 

-where you have started NodeB and NodeC, you would see log messages that indicate that

-the add and substract services where called on these nodes respectively.

-

-The sample demonstrates that the calculator application can be distributed

-across multiple nodes with no change to the application or to the SCA description

-files. 

-

-

-calculator/

-  src/

-    main/

-      java/

-        calculator/

-          CalculatorService.java  - the first component, calls +-/* as 

-                                    appropriate

-          AddService.java         - adds two numbers

-          AddServiceImpl.java

-          SubtractService.java    - subtracts one number from another

-          SubtractServiceImpl.java

-          MultiplyService.java    - multiplies two numbers

-          MultiplyServiceImpl.java

-          DivideService.java      - divides one number by another

-          DivideServiceImpl.java

-        node/

-          CalculatorNode.java     - runs up an sca application based on 

-                                    configuration given on the command 

-                                    line in the form

-                                    

-                                    CalculatorNode <domain name> <node name>

-                                    

-                                    it looks for a directory name the same

-                                    as <node name> and loads the composites

-                                    there

-                                    

-                                    if <node name> = nodeA it calls the 

-                                    +-/* operations otherwise it behaves

-                                    like a server and waits for service 

-                                    requests

-           DomainNode.java        - the node that provides the service 

-                                    discovery mechanism to the distributed

-                                    domain

-      resources/

-        domain                    - the SCA assembly for the service discovery

-                                    function

-        management/               - the SCA assembly for each nodes management

-                                    function

-        nodeA                     - the SCA assembly for nodeA's part of the 

-                                    calculator application

-        nodeB                     - the SCA assembly for nodeB's part of the 

-                                    calculator application

-        nodeC                     - the SCA assembly for nodeB's part of the 

-                                    calculator application

-    test/

-      java/

-        calculator/

-          DomainInMemoryTestCase.java - JUnit test case which runs all of the

-                                    separate ndes in a single VM for test

-                                    purposes

-  calculator-distributed.png      - a pictorial representation of the sample 

-                                    .composite files

-  build.xml                       - the Ant build file

-  pom.xml                         - the Maven build file        

-

-

-Building And Running The Sample Using Ant

------------------------------------------

-With the binary distribution the sample can be built and run using Ant as 

-follows

-

-cd calculator-distributed

-ant compile

-ant runDomainNode

-ant runNodeB

-ant runNodeC

-ant runNodeA

-

-You should see the following output from the four separate command prompt:

-

-runDomainNode:

-     [java] log4j:WARN No appenders could be found for logger (org.apache.axiom.

-om.util.StAXUtils).

-     [java] log4j:WARN Please initialize the log4j system properly.

-     [java] 23-Aug-2007 17:40:40 org.apache.tuscany.sca.http.jetty.JettyServer a

-ddServletMapping

-     [java] INFO: Added Servlet mapping: http://localhost:8080/ServiceDiscoveryC

-omponent/ServiceDiscovery

-     [java] Domain node started (press enter to shutdown)

-     [java] Registering service: [mydomain nodeB AddServiceComponent org.apache.

-tuscany.sca.assembly.SCABinding http://localhost:8085/AddServiceComponent]

-     [java] Registering service: [mydomain nodeC SubtractServiceComponent org.ap

-ache.tuscany.sca.assembly.SCABinding http://localhost:8086/SubtractServiceCompon

-ent]

-     [java] Finding service: [mydomain SubtractServiceComponent org.apache.tusca

-ny.sca.assembly.SCABinding]

-     [java] Matching service url: http://localhost:8086/SubtractServiceComponent

-

-     [java] Finding service: [mydomain AddServiceComponent org.apache.tuscany.sc

-a.assembly.SCABinding]

-     [java] Matching service url: http://localhost:8085/AddServiceComponent

-     [java] Java Result: 1

-Terminate batch job (Y/N)? y

-

-

-

-runNodeB:

-     [java] file:/C:/simon/tuscany/java-head/sca/samples/calculator-distributed/

-target/classes/management/

-     [java] log4j:WARN No appenders could be found for logger (org.apache.axiom.

-om.util.StAXUtils).

-     [java] log4j:WARN Please initialize the log4j system properly.

-     [java] Registering service: [mydomain nodeB AddServiceComponent/ org.apache

-.tuscany.sca.assembly.SCABinding http://localhost:8085/AddServiceComponent]

-     [java] 23-Aug-2007 17:41:25 org.apache.tuscany.sca.http.jetty.JettyServer a

-ddServletMapping

-     [java] INFO: Added Servlet mapping: http://localhost:8085/AddServiceCompone

-nt

-     [java] Node started (press enter to shutdown)

-     [java] AddService - add 3.0 and 2.0

-     

-     

-runNodeC:

-     [java] file:/C:/simon/tuscany/java-head/sca/samples/calculator-distributed/

-target/classes/management/

-     [java] log4j:WARN No appenders could be found for logger (org.apache.axiom.

-om.util.StAXUtils).

-     [java] log4j:WARN Please initialize the log4j system properly.

-     [java] Registering service: [mydomain nodeC SubtractServiceComponent org.ap

-ache.tuscany.sca.assembly.SCABinding http://localhost:8086/SubtractServiceCompon

-ent]

-     [java] 23-Aug-2007 17:41:51 org.apache.tuscany.sca.http.jetty.JettyServer a

-ddServletMapping

-     [java] Node started (press enter to shutdown)

-     [java] INFO: Added Servlet mapping: http://localhost:8086/SubtractServiceCo

-mponent

-     [java] SubtractService - subtract 3.0 and 2.0

-Terminate batch job (Y/N)? y

-

-

-runNodeA:

-     [java] file:/C:/simon/tuscany/java-head/sca/samples/calculator-distributed/

-target/classes/management/

-     [java] log4j:WARN No appenders could be found for logger (org.apache.axiom.

-om.util.StAXUtils).

-     [java] log4j:WARN Please initialize the log4j system properly.

-     [java] 23-Aug-2007 17:42:12 org.apache.tuscany.sca.assembly.builder.impl.Co

-mpositeBuilderImpl$1 problem

-     [java] WARNING: [WARNING] Component reference target not found, it might be

- a remote service: AddServiceComponent null

-     [java]

-     [java] 23-Aug-2007 17:42:12 org.apache.tuscany.sca.assembly.builder.impl.Co

-mpositeBuilderImpl$1 problem

-     [java] WARNING: [WARNING] Component reference target not found, it might be

- a remote service: SubtractServiceComponent null

-     [java]

-     [java] Finding service: [mydomain SubtractServiceComponent org.apache.tusca

-ny.sca.assembly.SCABinding]

-     [java] Finding service: [mydomain AddServiceComponent org.apache.tuscany.sc

-a.assembly.SCABinding]

-     [java] CalculatorService - add 3.0 and 2.0

-     [java] 3 + 2=5.0

-     [java] CalculatorService - subtract 3.0 and 2.0

-     [java] 3 - 2=1.0

-     [java] CalculatorService - multiply 3.0 and 2.0

-     [java] 3 * 2=6.0

-     [java] CalculatorService - divide 3.0 and 2.0

-     [java] 3 / 2=1.5

-

-

-Building And Running The Sample Using Maven 

--------------------------------------------

-With either the binary or source distributions the sample can be built and run 

-using Maven as follows. When running from Maven the four nodes all run within 

-Java virtual machine. 

-

-cd calculator-distributed

-mvn

-

-You should see the following output from the test phase.

-

--------------------------------------------------------

- T E S T S

--------------------------------------------------------

-Running calculator.DomainInMemoryTestCase

-Setting up distributed nodes

-file:/C:/simon/tuscany/java-head/sca/samples/calculator-distributed/target/class

-es/management/

-log4j:WARN No appenders could be found for logger (org.apache.axiom.om.util.StAX

-Utils).

-log4j:WARN Please initialize the log4j system properly.

-23-Aug-2007 18:18:41 org.apache.tuscany.sca.assembly.builder.impl.CompositeBuild

-erImpl$1 problem

-WARNING: [WARNING] Component reference target not found, it might be a remote se

-rvice: AddServiceComponent null

-

-23-Aug-2007 18:18:41 org.apache.tuscany.sca.assembly.builder.impl.CompositeBuild

-erImpl$1 problem

-WARNING: [WARNING] Component reference target not found, it might be a remote se

-rvice: SubtractServiceComponent null

-

-file:/C:/simon/tuscany/java-head/sca/samples/calculator-distributed/target/class

-es/management/

-Registering service: [mydomain nodeB AddServiceComponent org.apache.tuscany.sca.

-assembly.SCABinding http://localhost:8085/AddServiceComponent]

-file:/C:/simon/tuscany/java-head/sca/samples/calculator-distributed/target/class

-es/management/

-Registering service: [mydomain nodeC SubtractServiceComponent org.apache.tuscany

-.sca.assembly.SCABinding http://localhost:8086/SubtractServiceComponent]

-Finding service: [mydomain SubtractServiceComponent org.apache.tuscany.sca.assem

-bly.SCABinding]

-Matching service url: http://localhost:8086/SubtractServiceComponent

-Finding service: [mydomain AddServiceComponent org.apache.tuscany.sca.assembly.S

-CABinding]

-Matching service url: http://localhost:8085/AddServiceComponent

-23-Aug-2007 18:18:45 org.apache.tuscany.sca.http.jetty.JettyServer addServletMap

-ping

-INFO: Added Servlet mapping: http://localhost:8085/AddServiceComponent

-23-Aug-2007 18:18:47 org.apache.tuscany.sca.http.jetty.JettyServer addServletMap

-ping

-INFO: Added Servlet mapping: http://localhost:8086/SubtractServiceComponent

-CalculatorService - add 3.0 and 2.0

-AddService - add 3.0 and 2.0

-CalculatorService - subtract 3.0 and 2.0

-SubtractService - subtract 3.0 and 2.0

-CalculatorService - multiply 3.0 and 2.0

-CalculatorService - divide 3.0 and 2.0

-Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 7.14 sec

-

-Results :

-

-Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

-

-

-This shows that the Junit test cases have run successfully. 

-

-Known Bug : 

----------

-The processes that are running NodeB and NodeC do not seem to end on pressing the

-<Enter>.  This will be fixed for the next release.  For this release you should use

-^C (Control C) to exit these processes.

-

-