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Posted to user@tuscany.apache.org by "Roberts, Keith (SAIC)" <Ke...@va.gov> on 2010/06/23 17:00:15 UTC
Problem with Tuscany 2.0 M5 hello world example
Hi all
I'm a newbie, trying to get a better understanding of Tuscany be
studying and executing the examples...
I'm embarrassed to admit that I have not gotten past the simplest
helloworld example.
I've looked at the 'store' example and feel that I understand it pretty
well. I went through the tutorial and was able to get it to work.
I am assuming that the helloworld example needs to be launched to host
the helloworld service just like the store example. I tried installing
the eclipse Tuscany plugin but had problems with the eclipse update
manager.
I didn't see a launcher so I built one like the store example listed
below.
package launch;
import org.apache.tuscany.sca.node.Contribution;
import org.apache.tuscany.sca.node.ContributionLocationHelper;
import org.apache.tuscany.sca.node.Node;
import org.apache.tuscany.sca.node.NodeFactory;
public class Launch {
/**
* @param args
*/
public static void main(String[] args) throws Exception {
System.out.println("Starting ...");
String contribution =
ContributionLocationHelper.getContributionLocation(Launch.class);
Node node =
NodeFactory.newInstance().createNode("helloworld.composite", new
Contribution("test", contribution));
node.start();
System.out.println("store.composite ready for big business
!!!");
System.in.read();
System.out.println("Stopping ...");
node.stop();
System.out.println();
}
}
But when I launch I get this exception.
SEVERE: Element
{http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java
cannot be processed. ([row,col,system-id]:
[26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/ta
rget/classes/helloworld.composite"])
Exception in thread "main" java.lang.IllegalStateException:
org.oasisopen.sca.ServiceRuntimeException: [Contribution: test,
Artifact: helloworld.composite] - Element
{http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java
cannot be processed. ([row,col,system-id]:
[26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/ta
rget/classes/helloworld.composite"])
at
org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:173)
at launch.Launch.main(Launch.java:17)
Caused by: org.oasisopen.sca.ServiceRuntimeException: [Contribution:
test, Artifact: helloworld.composite] - Element
{http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java
cannot be processed. ([row,col,system-id]:
[26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/ta
rget/classes/helloworld.composite"])
at
org.apache.tuscany.sca.node.impl.NodeFactoryImpl.analyzeProblems(NodeFac
toryImpl.java:199)
at
org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeF
actoryImpl.java:432)
at
org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:125)
... 1 more
I expected this to run. I'm not sure if there is an issue with how I
have specified the helloworld.composite in the launcher or if there is a
problem instantiating the HelloWorldImpl class, or some other issue.
Once I get the helloworld example to run on the server; I'm expecting
the helloworld-scaclient - HelloworldSCAClient application to run as the
client to the helloworld server service.
I think I'm on the right track but not sure. This is probably some
little simple thing that I'm overlooking.
Thanks in advance...
Keith G. Roberts
SAIC/Evolvent VA Account
CHDR team
801-924-2130
Re: Problem with Tuscany 2.0 M5 hello world example
Posted by ant elder <an...@gmail.com>.
On Wed, Jun 23, 2010 at 4:00 PM, Roberts, Keith (SAIC)
<Ke...@va.gov> wrote:
> Hi all
>
>
>
> I’m a newbie, trying to get a better understanding of Tuscany be studying
> and executing the examples…
>
>
>
> I’m embarrassed to admit that I have not gotten past the simplest helloworld
> example.
>
>
>
> I’ve looked at the ‘store’ example and feel that I understand it pretty
> well. I went through the tutorial and was able to get it to work.
>
>
>
> I am assuming that the helloworld example needs to be launched to host the
> helloworld service just like the store example. I tried installing the
> eclipse Tuscany plugin but had problems with the eclipse update manager.
>
>
>
> I didn’t see a launcher so I built one like the store example listed below.
>
>
>
> package launch;
>
>
>
> import org.apache.tuscany.sca.node.Contribution;
>
> import org.apache.tuscany.sca.node.ContributionLocationHelper;
>
> import org.apache.tuscany.sca.node.Node;
>
> import org.apache.tuscany.sca.node.NodeFactory;
>
>
>
> public class Launch {
>
>
>
> /**
>
> * @param args
>
> */
>
> public static void main(String[] args) throws Exception {
>
> System.out.println("Starting ...");
>
> String contribution =
> ContributionLocationHelper.getContributionLocation(Launch.class);
>
> Node node =
> NodeFactory.newInstance().createNode("helloworld.composite", new
> Contribution("test", contribution));
>
> node.start();
>
> System.out.println("store.composite ready for big business !!!");
>
> System.in.read();
>
> System.out.println("Stopping ...");
>
> node.stop();
>
> System.out.println();
>
> }
>
>
>
> }
>
>
>
>
>
> But when I launch I get this exception.
>
>
>
> SEVERE: Element
> {http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java cannot
> be processed. ([row,col,system-id]:
> [26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/target/classes/helloworld.composite"])
>
> Exception in thread "main" java.lang.IllegalStateException:
> org.oasisopen.sca.ServiceRuntimeException: [Contribution: test, Artifact:
> helloworld.composite] - Element
> {http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java cannot
> be processed. ([row,col,system-id]:
> [26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/target/classes/helloworld.composite"])
>
> at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:173)
>
> at launch.Launch.main(Launch.java:17)
>
> Caused by: org.oasisopen.sca.ServiceRuntimeException: [Contribution: test,
> Artifact: helloworld.composite] - Element
> {http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java cannot
> be processed. ([row,col,system-id]:
> [26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/target/classes/helloworld.composite"])
>
> at
> org.apache.tuscany.sca.node.impl.NodeFactoryImpl.analyzeProblems(NodeFactoryImpl.java:199)
>
> at
> org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeFactoryImpl.java:432)
>
> at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:125)
>
> ... 1 more
>
>
>
> I expected this to run. I’m not sure if there is an issue with how I have
> specified the helloworld.composite in the launcher or if there is a problem
> instantiating the HelloWorldImpl class, or some other issue.
>
>
>
> Once I get the helloworld example to run on the server; I’m expecting the
> helloworld-scaclient – HelloworldSCAClient application to run as the client
> to the helloworld server service.
>
>
>
> I think I’m on the right track but not sure. This is probably some little
> simple thing that I’m overlooking.
>
>
>
> Thanks in advance…
>
>
>
>
>
>
>
> Keith G. Roberts
>
> SAIC/Evolvent VA Account
>
> CHDR team
>
> 801-924-2130
>
>
Hi Keith,
You can run the helloworld sample without needing to write any code by
using the Tuscany Maven plugin (which is defined inthe samples
pom.xml) by simply doing "mvn tuscany:run" in the helloworld sample
directory. That will start a Tuscany runtime with the helloworld
contribution installed. You can then test that by invoking that
helloworld service by using the helloworld-scaclient sample, in that
sample directory do "mvn exec:java" which will run the
HelloworldSCAClient main method.
You can also start a Tuscany runtime programatically like you were
trying to do, but to do that you need all the jars necessary to run
Tuscany. It looks like you are trying to run your code from within the
helloworld project which only has the SCA API jar defined as that is
all thats needed to compile an SCA contribution. The simplest way to
get all the jars is to copy what the helloworld-scaclient project does
which is to include this dependency:
<dependency>
<groupId>org.apache.tuscany.sca.shades</groupId>
<artifactId>tuscany-base</artifactId>
<version>2.0-M5</version>
</dependency>
The code you have showed could also be simplified to just this:
Node node = NodeFactory.newInstance().createNode((String)null,
new String[]{"../helloworld/target/classes"});
node.start();
Helloworld hw = node.getService(Helloworld.class,
"HelloworldComponent");
System.out.println(hw.sayHello("Keith"));
The key points to get from those samples is that there are two
separate parts - one is creating SCA contributions, and the other is
using Tuscany to run SCA contributions.
HTH,
...ant
Re: Problem with Tuscany 2.0 M5 hello world example
Posted by Simon Laws <si...@googlemail.com>.
On Wed, Jun 23, 2010 at 4:00 PM, Roberts, Keith (SAIC)
<Ke...@va.gov> wrote:
> Hi all
>
>
>
> I’m a newbie, trying to get a better understanding of Tuscany be studying
> and executing the examples…
>
>
>
> I’m embarrassed to admit that I have not gotten past the simplest helloworld
> example.
>
>
>
> I’ve looked at the ‘store’ example and feel that I understand it pretty
> well. I went through the tutorial and was able to get it to work.
>
>
>
> I am assuming that the helloworld example needs to be launched to host the
> helloworld service just like the store example. I tried installing the
> eclipse Tuscany plugin but had problems with the eclipse update manager.
>
>
>
> I didn’t see a launcher so I built one like the store example listed below.
>
>
>
> package launch;
>
>
>
> import org.apache.tuscany.sca.node.Contribution;
>
> import org.apache.tuscany.sca.node.ContributionLocationHelper;
>
> import org.apache.tuscany.sca.node.Node;
>
> import org.apache.tuscany.sca.node.NodeFactory;
>
>
>
> public class Launch {
>
>
>
> /**
>
> * @param args
>
> */
>
> public static void main(String[] args) throws Exception {
>
> System.out.println("Starting ...");
>
> String contribution =
> ContributionLocationHelper.getContributionLocation(Launch.class);
>
> Node node =
> NodeFactory.newInstance().createNode("helloworld.composite", new
> Contribution("test", contribution));
>
> node.start();
>
> System.out.println("store.composite ready for big business !!!");
>
> System.in.read();
>
> System.out.println("Stopping ...");
>
> node.stop();
>
> System.out.println();
>
> }
>
>
>
> }
>
>
>
>
>
> But when I launch I get this exception.
>
>
>
> SEVERE: Element
> {http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java cannot
> be processed. ([row,col,system-id]:
> [26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/target/classes/helloworld.composite"])
>
> Exception in thread "main" java.lang.IllegalStateException:
> org.oasisopen.sca.ServiceRuntimeException: [Contribution: test, Artifact:
> helloworld.composite] - Element
> {http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java cannot
> be processed. ([row,col,system-id]:
> [26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/target/classes/helloworld.composite"])
>
> at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:173)
>
> at launch.Launch.main(Launch.java:17)
>
> Caused by: org.oasisopen.sca.ServiceRuntimeException: [Contribution: test,
> Artifact: helloworld.composite] - Element
> {http://docs.oasis-open.org/ns/opencsa/sca/200912}implementation.java cannot
> be processed. ([row,col,system-id]:
> [26,9,"file:/C:/data/frameworks/tuscany-sca-2.0-M5/samples/helloworld/target/classes/helloworld.composite"])
>
> at
> org.apache.tuscany.sca.node.impl.NodeFactoryImpl.analyzeProblems(NodeFactoryImpl.java:199)
>
> at
> org.apache.tuscany.sca.node.impl.NodeFactoryImpl.loadContributions(NodeFactoryImpl.java:432)
>
> at org.apache.tuscany.sca.node.impl.NodeImpl.start(NodeImpl.java:125)
>
> ... 1 more
>
>
>
> I expected this to run. I’m not sure if there is an issue with how I have
> specified the helloworld.composite in the launcher or if there is a problem
> instantiating the HelloWorldImpl class, or some other issue.
>
>
>
> Once I get the helloworld example to run on the server; I’m expecting the
> helloworld-scaclient – HelloworldSCAClient application to run as the client
> to the helloworld server service.
>
>
>
> I think I’m on the right track but not sure. This is probably some little
> simple thing that I’m overlooking.
>
>
>
> Thanks in advance…
>
>
>
>
>
>
>
> Keith G. Roberts
>
> SAIC/Evolvent VA Account
>
> CHDR team
>
> 801-924-2130
>
>
Hi Keith
The error means that you don't have the implementation.java extension
on the classpath. Can you check that you have the same set of Tuscany
modules on the classpath as you do for the store example. FYI, a
number of other ways of running SCA contributions with Tuscany are
described in the sample modules starting with the word "launcher"
Having said all that the helloworld module doesn't actually do
anything on it's own. It's a contribution that Tuscany will fire up
and then wait for someone to call the services that it provides.
There is a helloworld client that I believe will call the helloworld
service (see samples/helloworld-scaclient). So once you manage to get
the helloworld contribution running try running HelloworldSCAClient.
The samples, and in particular the READMEs that go with them, are not
done yet so apologies that this is not obvious.
Regards
Simon
--
Apache Tuscany committer: tuscany.apache.org
Co-author of a book about Tuscany and SCA: tuscanyinaction.com