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Date: Fri, 22 Jun 2012 12:28:15 -0700
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 <CAGU5spdyL3KRtjUX3xxAOaU=4k2DHKFB7i8J-3QbT8kF=Cb3pw@mail.gmail.com>
Subject: Re: Java & Python in distributed nodes
From: Luciano Resende <luckbr1975@gmail.com>
To: user@tuscany.apache.org, Joni Lee <webcokies@yahoo.com>
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On Fri, Jun 22, 2012 at 2:25 AM, Joni Lee <webcokies@yahoo.com> wrote:
> Hi Raymond,
>
> We are developing a cloud architecture here and first take a look at the
> distributed nodes of Tuscany.
>
> I use maven to run it, and it does not work, even with dependency
> tuscany-core
> what I did is simply extend your existing sample
> (samples/calculator-distributed) with a python component, instead of a ja=
va
> component in one node.
>
> Do I miss something important? Because=C2=A0I can build and run the origi=
nal
> sample project without problems.
> thank you for your answers.
>
> ________________________________
> From: Raymond Feng <enjoyjava@gmail.com>
> To: user@tuscany.apache.org; Joni Lee <webcokies@yahoo.com>
> Sent: Thursday, June 21, 2012 11:40 PM
> Subject: Re: Java & Python in distributed nodes
>
> It seems that you are missing some dependencies such as tuscany-core on t=
he
> classpath.
>
> Thanks,
> Raymond
> On Jun 21, 2012, at 2:31 PM, Joni Lee wrote:
>
> Hi all,
>
> I'm very fascinated with the distributed components of SCA, whereby
> different components running on different machines. For the first try, i
> want to call python component from a Java component. Both on different no=
des
> and start them on local machine.
> For this I extend the project samples/calculator-distributed by adding a
> python component to a node B as follows
>
> =C2=A0 =C2=A0 // Add a Python component in
> src/main/resources/nodeB/Calculator.composite
>
> =C2=A0 =C2=A0 <component name=3D"HelloServiceComponent">
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 <tuscany:implementation.script
> script=3D"calculator/HelloServiceImpl.py"/>
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 <service name=3D"HelloService">
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 <interface.java interface=3D"calculator.Hello=
Service" />
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 </service>
> =C2=A0 =C2=A0 </component>
>
> the script HelloServiceImpl.py is put in the same directory of the compos=
ite
> of node B (src/main/resources/nodeB)
> the Java interface is put in src/main/java/calculator/HelloService.java
>
> But I cannot start the node
>
> 21-Jun-2012 17:16:42
> org.apache.tuscany.sca.implementation.node.builder.impl.NodeCompositeBuil=
derImpl
> WARNING: Service not found for component service: Component =3D
> HelloServiceComponent Service =3D HelloService
> 21-Jun-2012 17:16:42
> org.apache.tuscany.sca.assembly.xml.CompositeDocumentProcessor
> SEVERE: HTTP Server Error : java.lang.ClassCastException:
> org.apache.tuscany.sca.assembly.impl.ComponentImpl cannot be cast to
> org.apache.tuscany.sca.runtime.RuntimeComponent
> 21-Jun-2012 17:16:42
> org.apache.tuscany.sca.assembly.xml.CompositeDocumentProcessor
>
> Any suggestions? Do I miss something important?
>
> Thank you very much
>
>
>
>

BTW, Are you using 1.x or 2.x ?


--=20
Luciano Resende
http://people.apache.org/~lresende
http://twitter.com/lresende1975
http://lresende.blogspot.com/