ce8f90902c
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1028659 13f79535-47bb-0310-9956-ffa450edef68
127 lines
4.9 KiB
Text
127 lines
4.9 KiB
Text
Hello World Erlang Reference Sample
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===================================
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This sample demonstrates an SCA reference that uses a Erlang binding
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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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In order to run Erlang samples you need to have Erlang/OTP distribution installed -
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epmd binary is required in your system path. See http://erlang.org for downloads.
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If you just want to run it to see what happens you need to run the server first
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so open a command prompt, navigate to the helloworld-erlang-service sample directory
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and do
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ant run
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OR if you don't have ant, on Windows do
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java -cp ..\..\lib\tuscany-sca-manifest.jar;target\sample-helloworld-erlang-service.jar helloworld.HelloWorldServer
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and on *nix do
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java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-helloworld-erlang-service.jar helloworld.HelloWorldServer
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Once the server is running open a command prompt, navigate to this sample
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directory and do:
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ant run
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OR if you don't have ant, on Windows do
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java -cp ..\..\lib\tuscany-sca-manifest.jar;target\sample-helloworld-erlang-reference.jar helloworld.HelloWorldErlangClient
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and on *nix do
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java -cp ../../lib/tuscany-sca-manifest.jar:target/sample-helloworld-erlang-reference.jar helloworld.HelloWorldErlangClient
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Sample Overview
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---------------
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The sample provides a component that has a reference with a Erlang binding.
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The binding refers to Erlang module and communicates with a service
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exposed by the helloworld-service-erlang sample.
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helloworld-erlang-reference/
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src/
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main/
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java/
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helloworld/
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HelloWorldImpl - HelloWorld service implementation
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HelloWorldService.java - interface description for
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HelloWorldServiceComponent
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HelloWorldServiceComponent.java - component implementation
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HelloWorldErlangClient.java - starts the SCA Runtime and
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deploys the helloworldwserlangclient
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.composite. It then calls the
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HelloWorldServiceComponent
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resources/
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helloworlderlangreference.composite - the SCA assembly for this sample
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helloworlderlangservice.composite - the SCA assembly for the server
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that is used by the JUnit tests
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logging.properties - log4j configuration file
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test/
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java/
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helloworld/
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HelloWorldErlangClientTestCase.java - JUnit test case
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dynaignore/ - internal Java classes for ignoring test
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in case of missing Erlang/OTP distribution
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helloworld-reference.png - a pictorial representation of the
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sample .composite file
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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. Before
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you do this start up the service that the reference will talk to. To do this
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run up the helloworld-erlang-service sample. Take a look at the README in that sample
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and you will see you need the following commands
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cd helloworld-erlang-service
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ant run
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Once done you can now compile and run this sample using the following commands;
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cd helloworld-erlang-reference
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ant compile
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ant run
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You should see the following output from the run target.
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run:
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[java] 2009-05-26 12:03:54 org.apache.tuscany.sca.node.impl.NodeImpl <init>
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[java] INFO: Creating node: helloworlderlangreference.composite
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[java] 2009-05-26 12:03:55 org.apache.tuscany.sca.node.impl.NodeImpl configureNode
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[java] 2009-05-26 12:03:56 org.apache.tuscany.sca.node.impl.NodeImpl configureNode
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[java] 2009-05-26 12:03:56 org.apache.tuscany.sca.node.impl.NodeImpl start
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[java] INFO: Starting node: helloworlderlangreference.composite
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[java] Hello World
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[java] 2009-05-26 12:03:56 org.apache.tuscany.sca.node.impl.NodeImpl stop
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[java] INFO: Stopping node: helloworlderlangreference.composite
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BUILD SUCCESSFUL
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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 using Maven you don't need to run the helloworld-
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erlang-service sample first as the JUnit test does this for you.
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cd helloworld-erlang-reference
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mvn
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You should see the following output from the test phase.
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Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.569 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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