d64d4281ec
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1069273 13f79535-47bb-0310-9956-ffa450edef68
438 lines
21 KiB
Text
438 lines
21 KiB
Text
Calculator Distributed Sample
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=============================
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This sample implements a simple calculator using SCA components. It uses
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exactly the same calculator application classes as the calculator sample but
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runs the application distributed across three nodes.
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A node in this sample means an instance of the Tuscany SCA java runtime running
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in a Java virtual machine.
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The README in the samples directory (the directory above this) provides
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general instructions about building and running samples. Take a look there
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first.
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If you just want to run it to see what happens open four command prompts and
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navigate to this sample directory in each one. There is one command to be run
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in each command prompt:
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ant runDomain
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ant runNodeB
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ant runNodeC
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ant runNodeA
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Please run the commands in this order.
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OR if you don't have ant, on Windows use
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java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.LaunchDomain
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java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.LaunchCalculatorNodeB
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java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.LaunchCalculatorNodeC
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java -cp src\main\resources;..\..\lib\tuscany-sca-manifest.jar;target\sample-calculator-distributed.jar node.LaunchCalculatorNodeA
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and on *nix do
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java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.LaunchDomain
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java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.LaunchCalculatorNodeB
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java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.LaunchCalculatorNodeC
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java -cp src/main/resources:../../lib/tuscany-sca-manifest.jar:target/sample-calculator-distributed.jar node.LaunchCalculatorNodeA
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The processes started on each of these command prompts can be ended by pressing
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the <Enter> key.
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Sample Overview
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---------------
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The sample provides a single calculator service with a default SCA (java)
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binding. NodeA exercises this interface by calling add, subtract, multiply and
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divide operations.
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In the case of add and subtract the runtime recognises that
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it can't find these services locally and, using the remote (web services)
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version of the default SCA binding, contacts the add service running in NodeB
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and the subtract service running in NodeC.
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On the command prompt where you started NodeA, you see the output of invoking the
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calculator functions distributed over NodeB and and NodeC. On the command prompts
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where you have started NodeB and NodeC, you see log messages that indicate that
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the add and subtract services where called on these nodes respectively.
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The sample demonstrates that the calculator application can be distributed
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across multiple nodes with no change to the application or to the SCA description
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files.
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The domain node makes available a web application through which the contributions and
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composites used in this sample can be navigated. One you have run "ant runDomain" you can
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point you browser at:
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http://localhost:9990/ui/workspace/
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The contents of the sample are as follows:
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calculator/
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src/
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main/
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java/
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calculator/
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CalculatorService.java - the first component, calls +-/* as
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appropriate
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AddService.java - adds two numbers
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AddServiceImpl.java
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SubtractService.java - subtracts one number from another
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SubtractServiceImpl.java
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MultiplyService.java - multiplies two numbers
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MultiplyServiceImpl.java
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DivideService.java - divides one number by another
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DivideServiceImpl.java
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node/
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LaunchCalculatorNodeA.java - runs an sca node configured with the
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composite describing the main calculator
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application. If you look inside this class
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you will see that the node is configured
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using a URL of the form:
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http://localhost:9990/node-config/NodeA
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This retrieves the information required
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to configure NodeA from the domain.
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Once the node has been started this launcher
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then finds the calculator service and
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calls the various methods.
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LaunchCalculatorNodeB&C.java - These launchers start nodes B and C
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which runs the add and subtract services.
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Unlike NodeA though these launchers just
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wait once the node has been started. They
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will service incomming web service requests
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as they arrive.
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LaunchDomain.java - the node that provides the domain
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configuration to the distributed
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nodes
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resources/
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cloud - The SCA composite files that describe
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the configuration of each node
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nodeA - the SCA assembly for nodeA's part of the
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calculator application
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nodeB - the SCA assembly for nodeB's part of the
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calculator application
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nodeC - the SCA assembly for nodeC's part of the
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calculator application
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test/
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java/
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calculator/
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CalculatorDistributedTestCase.java - JUnit test case which runs all
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of the separate nodes along with the domain
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in a single VM for test purposes
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calculator-distributed.png - a pictorial representation of the sample
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.composite files
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build.xml - the Ant build file
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pom.xml - the Maven build file
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Building And Running The Sample Using Ant
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-----------------------------------------
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With the binary distribution the sample can be built and run using Ant as
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follows
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cd calculator-distributed
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ant compile
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ant runDomain
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ant runNodeB
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ant runNodeC
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ant runNodeA
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You should see the following output from the four separate command prompt:
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runDomain:
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ted>ant runDomain
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Buildfile: build.xml
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runDomain:
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[java] 26-Mar-2008 12:55:12 org.apache.tuscany.sca.node.launcher.DomainMana
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gerLauncher main
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[java] INFO: Apache Tuscany SCA Domain Manager starting...
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[java] 26-Mar-2008 12:55:13 org.apache.tuscany.sca.node.launcher.NodeLaunch
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erUtil collectJARFiles
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[java] INFO: Runtime classpath: 147 JARs from C:\simon\tuscany\sca-java-1.2
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\distribution\target\apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir\tuscany-sca-
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1.2-incubating-SNAPSHOT\lib
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[java] 26-Mar-2008 12:55:13 org.apache.tuscany.sca.node.launcher.NodeLaunch
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erUtil collectJARFiles
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[java] INFO: Runtime classpath: 89 JARs from C:\simon\tuscany\sca-java-1.2\
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distribution\target\apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir\tuscany-sca-1
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.2-incubating-SNAPSHOT\modules
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[java] 26-Mar-2008 12:55:19 org.apache.catalina.core.StandardEngine start
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[java] INFO: Starting Servlet Engine: Apache Tomcat/6.0.14
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.ContextConfig defau
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ltWebConfig
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[java] INFO: No default web.xml
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.DigesterFactory reg
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ister
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[java] WARNING: Could not get url for /javax/servlet/jsp/resources/jsp_2_0.
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xsd
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.DigesterFactory reg
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ister
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[java] WARNING: Could not get url for /javax/servlet/jsp/resources/jsp_2_1.
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xsd
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.DigesterFactory reg
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ister
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[java] WARNING: Could not get url for /javax/servlet/jsp/resources/web-jspt
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aglibrary_1_1.dtd
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.DigesterFactory reg
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ister
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[java] WARNING: Could not get url for /javax/servlet/jsp/resources/web-jspt
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aglibrary_1_2.dtd
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.DigesterFactory reg
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ister
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[java] WARNING: Could not get url for /javax/servlet/jsp/resources/web-jspt
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aglibrary_2_0.xsd
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.DigesterFactory reg
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ister
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[java] WARNING: Could not get url for /javax/servlet/jsp/resources/web-jspt
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aglibrary_2_1.xsd
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[java] 26-Mar-2008 12:55:20 org.apache.catalina.startup.DigesterFactory reg
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ister
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[java] WARNING: Could not get url for /javax/servlet/resources/j2ee_web_ser
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vices_1_1.xsd
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[java] 26-Mar-2008 12:55:20 org.apache.coyote.http11.Http11Protocol init
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[java] INFO: Initializing Coyote HTTP/1.1 on http-9990
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[java] 26-Mar-2008 12:55:20 org.apache.coyote.http11.Http11Protocol start
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[java] INFO: Starting Coyote HTTP/1.1 on http-9990
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[java] 26-Mar-2008 12:55:20 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/ui/home/*
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[java] 26-Mar-2008 12:55:20 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/ui/workspace/*
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[java] 26-Mar-2008 12:55:20 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/ui/files/*
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[java] 26-Mar-2008 12:55:20 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/ui/composite/*
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[java] 26-Mar-2008 12:55:20 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/ui/cloud/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/workspace/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/contribution/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/feed/files/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/files/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/composite/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/composite-source/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/deployable/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/composite-resolved/
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*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/cloud/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/cloud-source/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/composite-config/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/node-config/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/quickstart/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/processes/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/node/processes/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.http.tomcat.TomcatServer
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addServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:9990/ping/*
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.node.launcher.DomainMana
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gerLauncher main
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[java] INFO: SCA Domain Manager started.
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[java] 26-Mar-2008 12:55:21 org.apache.tuscany.sca.node.launcher.DomainMana
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gerLauncher main
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[java] INFO: Press enter to shutdown.
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runNodeB:
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[java] 26-Mar-2008 12:55:42 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: Apache Tuscany SCA Node starting...
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[java] 26-Mar-2008 12:55:42 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: SCA Node configuration: http://localhost:9990/node-config/NodeB
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[java] 26-Mar-2008 12:55:42 org.apache.tuscany.sca.node.launcher.NodeLaunch
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erUtil collectJARFiles
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[java] INFO: Runtime classpath: 147 JARs from C:\simon\tuscany\sca-java-1.2
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\distribution\target\apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir\tuscany-sca-
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1.2-incubating-SNAPSHOT\lib
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[java] 26-Mar-2008 12:55:42 org.apache.tuscany.sca.node.launcher.NodeLaunch
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erUtil collectJARFiles
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[java] INFO: Runtime classpath: 89 JARs from C:\simon\tuscany\sca-java-1.2\
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distribution\target\apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir\tuscany-sca-1
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.2-incubating-SNAPSHOT\modules
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[java] 26-Mar-2008 12:55:42 org.apache.tuscany.sca.node.impl.NodeImpl <init
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>
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[java] INFO: Creating node: http://localhost:9990/node-config/NodeB
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[java] 26-Mar-2008 12:55:45 org.apache.tuscany.sca.node.impl.NodeImpl confi
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gureNode
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[java] INFO: Loading contribution: file:/C:/simon/tuscany/sca-java-1.2/dist
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ribution/target/apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir/tuscany-sca-1.2-i
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ncubating-SNAPSHOT/samples/calculator-distributed/./src/main/resources/nodeB/
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[java] 26-Mar-2008 12:55:46 org.apache.tuscany.sca.node.impl.NodeImpl confi
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gureNode
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[java] INFO: Loading composite: http://localhost:9990/composite-resolved/co
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mposite:nodeB;http://sample;CalculatorB
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[java] 26-Mar-2008 12:55:47 org.apache.tuscany.sca.node.impl.NodeImpl start
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[java] INFO: Starting node: http://localhost:9990/node-config/NodeB
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[java] Warning: Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor
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[java] 26-Mar-2008 12:55:53 org.apache.tuscany.sca.http.jetty.JettyServer a
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ddServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:8200/AddServiceComponent
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B
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[java] 26-Mar-2008 12:55:53 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: SCA Node started.
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[java] 26-Mar-2008 12:55:53 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: Press enter to shutdown.
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[java] AddService - add 3.0 and 2.0
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runNodeC:
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[java] 26-Mar-2008 12:56:01 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: Apache Tuscany SCA Node starting...
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[java] 26-Mar-2008 12:56:01 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: SCA Node configuration: http://localhost:9990/node-config/NodeC
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[java] 26-Mar-2008 12:56:01 org.apache.tuscany.sca.node.launcher.NodeLaunch
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erUtil collectJARFiles
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[java] INFO: Runtime classpath: 147 JARs from C:\simon\tuscany\sca-java-1.2
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\distribution\target\apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir\tuscany-sca-
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1.2-incubating-SNAPSHOT\lib
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[java] 26-Mar-2008 12:56:01 org.apache.tuscany.sca.node.launcher.NodeLaunch
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erUtil collectJARFiles
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[java] INFO: Runtime classpath: 89 JARs from C:\simon\tuscany\sca-java-1.2\
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distribution\target\apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir\tuscany-sca-1
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.2-incubating-SNAPSHOT\modules
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[java] 26-Mar-2008 12:56:01 org.apache.tuscany.sca.node.impl.NodeImpl <init
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>
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[java] INFO: Creating node: http://localhost:9990/node-config/NodeC
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[java] 26-Mar-2008 12:56:03 org.apache.tuscany.sca.node.impl.NodeImpl confi
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gureNode
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[java] INFO: Loading contribution: file:/C:/simon/tuscany/sca-java-1.2/dist
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ribution/target/apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir/tuscany-sca-1.2-i
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ncubating-SNAPSHOT/samples/calculator-distributed/./src/main/resources/nodeC/
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[java] 26-Mar-2008 12:56:04 org.apache.tuscany.sca.node.impl.NodeImpl confi
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gureNode
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[java] INFO: Loading composite: http://localhost:9990/composite-resolved/co
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mposite:nodeC;http://sample;CalculatorC
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[java] 26-Mar-2008 12:56:04 org.apache.tuscany.sca.node.impl.NodeImpl start
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[java] INFO: Starting node: http://localhost:9990/node-config/NodeC
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[java] Warning: Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor
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[java] 26-Mar-2008 12:56:10 org.apache.tuscany.sca.http.jetty.JettyServer a
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ddServletMapping
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[java] INFO: Added Servlet mapping: http://L3AW203:8300/SubtractServiceComp
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onentC
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[java] 26-Mar-2008 12:56:10 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: SCA Node started.
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[java] 26-Mar-2008 12:56:10 org.apache.tuscany.sca.node.launcher.NodeLaunch
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er main
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[java] INFO: Press enter to shutdown.
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[java] SubtractService - subtract 3.0 and 2.0
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runNodeA:
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[java] 26-Mar-2008 12:56:10 org.apache.tuscany.sca.node.impl.NodeImpl <init
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>
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[java] INFO: Creating node: http://localhost:9990/node-config/NodeA
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[java] 26-Mar-2008 12:56:12 org.apache.tuscany.sca.node.impl.NodeImpl confi
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gureNode
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[java] INFO: Loading contribution: file:/C:/simon/tuscany/sca-java-1.2/dist
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ribution/target/apache-tuscany-sca-1.2-incubating-SNAPSHOT.dir/tuscany-sca-1.2-i
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ncubating-SNAPSHOT/samples/calculator-distributed/./src/main/resources/nodeA/
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[java] 26-Mar-2008 12:56:13 org.apache.tuscany.sca.node.impl.NodeImpl confi
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gureNode
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[java] INFO: Loading composite: http://localhost:9990/composite-resolved/co
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mposite:nodeA;http://sample;CalculatorA
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[java] 26-Mar-2008 12:56:14 org.apache.tuscany.sca.assembly.builder.impl.Co
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mpositeBuilderImpl$1 problem
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[java] WARNING: Component reference target not found, it might be a remote
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service: SubtractServiceComponentC
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[java] 26-Mar-2008 12:56:14 org.apache.tuscany.sca.assembly.builder.impl.Co
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mpositeBuilderImpl$1 problem
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[java] WARNING: Component reference target not found, it might be a remote
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service: AddServiceComponentB
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[java] 26-Mar-2008 12:56:14 org.apache.tuscany.sca.node.impl.NodeImpl start
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[java] INFO: Starting node: http://localhost:9990/node-config/NodeA
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[java] Warning: Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor
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[java] Warning: Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor
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[java] CalculatorService - add 3.0 and 2.0
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[java] 3 + 2=5.0
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[java] CalculatorService - subtract 3.0 and 2.0
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[java] 3 - 2=1.0
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[java] CalculatorService - multiply 3.0 and 2.0
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[java] 3 * 2=6.0
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[java] CalculatorService - divide 3.0 and 2.0
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[java] 3 / 2=1.5
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[java] 26-Mar-2008 12:56:20 org.apache.tuscany.sca.node.impl.NodeImpl stop
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[java] INFO: Stopping node: http://localhost:9990/node-config/NodeA
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Building And Running The Sample Using Maven
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-------------------------------------------
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With either the binary or source distributions the sample can be built and run
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using Maven as follows. When running from Maven the four nodes all run within
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Java virtual machine.
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cd calculator-distributed
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mvn
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You should see the following output at the end of the test phase.
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INFO: Starting node: http://localhost:9990/node-config/NodeA
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CalculatorService - add 3.0 and 2.0
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AddService - add 3.0 and 2.0
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CalculatorService - subtract 3.0 and 2.0
|
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SubtractService - subtract 3.0 and 2.0
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CalculatorService - multiply 3.0 and 2.0
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|
CalculatorService - divide 3.0 and 2.0
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26-Mar-2008 13:00:52 org.apache.tuscany.sca.node.impl.NodeImpl stop
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INFO: Stopping node: http://localhost:9990/node-config/NodeC
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26-Mar-2008 13:00:52 org.apache.tuscany.sca.node.impl.NodeImpl stop
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INFO: Stopping node: http://localhost:9990/node-config/NodeB
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26-Mar-2008 13:00:52 org.apache.tuscany.sca.node.impl.NodeImpl stop
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INFO: Stopping node: http://localhost:9990/node-config/NodeA
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Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 13.328 sec
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|
Results :
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Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
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This shows that the Junit test cases have run successfully.
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