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Date: Thu, 03 Jul 2008 13:22:42 +0200
From: Hinde Bouziane <hbouzian@irisa.fr>
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To: dev@tuscany.apache.org,  user@tuscany.apache.org
Subject: Problem (urgent): component inctances creation on nodes / multiple
 services?
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Hi all,
I'm trying to launch an application with the following distributed 
architecture/configuration (with two nodes):

**** ComponentA and ComponentActrl on Node_compA:
node_compA.composite :
<composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
           targetNamespace="http://sample"
           xmlns:sample="http://sample"
           name="Node_compA_comp">
    <component name="ComponentA">
        <implementation.java class="a_comp.A_Impl" />
    </component>
    <component name="ComponentActrl">
        <implementation.java class="a_comp.A_ctrl" />
        <reference name="userAtask" target="ComponentA" />
    <service name="Tmp_double">
      <interface.java interface="aSEQb.Tmp_double"/>
    </service>
    <service name="ActrlPorts">
      <interface.java interface="a_comp.ActrlPorts"/>
    </service>
    </component>
</composite>

cloud/Node_compA.composite:

<composite    xmlns="http://www.osoa.org/xmlns/sca/1.0"
        xmlns:t="http://tuscany.apache.org/xmlns/sca/1.0"
        targetNamespace="http://sample/cloud"
        xmlns:s="http://sample"
        name="Node_compA">
    <component name="Node_compA">
        <t:implementation.node uri="node_compA" 
composite="s:Node_compA_comp"/>
        <service name="Node">
            <binding.sca uri="http://localhost:8200"/>
        </service>
    </component>
</composite>

**** FakeComponentA on Node_fakeA
node_fakeA.composite:
<composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
           targetNamespace="http://sample"
           xmlns:sample="http://sample"
           name="Node_fakeA_comp">
    <component name="FakeComponentA">
        <implementation.java class="fake_comp.A_fake_Impl" />
        <reference name="fakeUseA"  target="ComponentActrl/Tmp_double" />
        <reference name="fakeCtrlA" target="ComponentActrl/ActrlPorts" />
    </component>
</composite>

cloud/Node_fakeA.composite:

<composite    xmlns="http://www.osoa.org/xmlns/sca/1.0"
        xmlns:t="http://tuscany.apache.org/xmlns/sca/1.0"
        targetNamespace="http://sample/cloud"
        xmlns:s="http://sample"
        name="Node_fakeA">
    <component name="Node_fakeA">
        <t:implementation.node uri="node_fakeA" 
composite="s:Node_fakeA_comp"/>
        <service name="Node">
            <binding.sca uri="http://localhost:8100"/>
        </service>
    </component>
</composite>

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

A client program launches Node_fakeA, get the service 
ComponentActrl/Tmp_double. The associated interface is :

@Remotable
public interface Tmp_double {

    void set_double(double val);
    void set_void();
}

 From the client program, the set_double(..) operation is called. It 
just make a call of the same operation on ComponentActrl. But at this 
point, an error occurs.

Here is the relevant part of the Client program:

public class ApplManagerWithFakeComp {

    public static void main(String[] args) throws Exception {
  
           ....   
            // Create a fake_A node
            NodeLauncher launcher = NodeLauncher.newInstance();
            String configurationURI = 
"http://localhost:9990/node-image/Node_fakeA";
           
            SCANode2 node = launcher.createNode(configurationURI);
               
            // Start the node
            try {
                node.getClass().getMethod("start").invoke(node);
                   
            } catch (Exception e) {
                   
                System.err.println("SCA fakeCompA_node: could not be 
started");
                throw e;
            }

            System.out.println("SCA fakeCompA_node started. Test usage");
            SCAClient client = (SCAClient)node;
            Tmp_double prov_inA = client.getService(Tmp_double.class, 
"FakeComponentA/Tmp_double");
               
            if (prov_inA == null){
                System.err.println("Error: Getted service is 
null!!!!!!!!!!!!!");
            }
           
            // Do some computations
            System.out.println("test multiple task executions for three 
inputs");         
            System.out.println("set inA = 50");
            prov_inA.set_double(50);                         
/****************/
            System.out.println("set inA = 100");
            prov_inA.set_double(100);         
            System.out.println("set inA  void");
            prov_inA.set_void();
       }
}

**************************

To execute the application, I launch the domain manager, Node_compA (it 
starts normally) and then the client program. At the line marked by 
/****************/ I obtain the following trace-error:


 ant runAppl
Buildfile: build.xml

runAppl:
     [java] Jul 3, 2008 12:23:03 PM 
org.apache.tuscany.sca.node.launcher.NodeLauncherUtil collectJARFiles
     [java] INFO: Runtime classpath: 148 JARs from 
/local/hbouzian/PostDoc/src/sca/tuscany-sca-1.2-incubating/lib
     [java] Jul 3, 2008 12:23:03 PM 
org.apache.tuscany.sca.node.launcher.NodeLauncherUtil collectJARFiles
     [java] INFO: Runtime classpath: 93 JARs from 
/local/hbouzian/PostDoc/src/sca/tuscany-sca-1.2-incubating/modules
     [java] Jul 3, 2008 12:23:03 PM 
org.apache.tuscany.sca.node.impl.NodeImpl <init>
     [java] INFO: Creating node: http://localhost:9990/node-image/Node_fakeA
     [java] Jul 3, 2008 12:23:04 PM 
org.apache.tuscany.sca.node.impl.NodeImpl configureNode
     [java] INFO: Loading contribution: 
file:/local/hbouzian/workspace/AseqBAppl/./src/main/resources/node_fakeA/
     [java] Jul 3, 2008 12:23:05 PM 
org.apache.tuscany.sca.node.impl.NodeImpl configureNode
     [java] INFO: Loading composite: 
http://localhost:9990/composite-resolved/composite:node_fakeA;http://sample;Node_fakeA_comp
     [java] Jul 3, 2008 12:23:05 PM 
org.apache.tuscany.sca.assembly.builder.impl.CompositeBuilderImpl$1 problem
     [java] WARNING: Component reference target not found, it might be a 
remote service: ComponentActrl/ActrlPorts
     [java] Jul 3, 2008 12:23:05 PM 
org.apache.tuscany.sca.assembly.builder.impl.CompositeBuilderImpl$1 problem
     [java] WARNING: Component reference target not found, it might be a 
remote service: ComponentActrl/Tmp_double
     [java] Jul 3, 2008 12:23:05 PM 
org.apache.tuscany.sca.node.impl.NodeImpl start
     [java] INFO: Starting node: http://localhost:9990/node-image/Node_fakeA
     [java] Jul 3, 2008 12:23:08 PM 
org.apache.catalina.core.StandardEngine start
     [java] INFO: Starting Servlet Engine: Apache Tomcat/6.0.14
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.ContextConfig defaultWebConfig
     [java] INFO: No default web.xml
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.DigesterFactory register
     [java] WARNING: Could not get url for 
/javax/servlet/jsp/resources/jsp_2_0.xsd
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.DigesterFactory register
     [java] WARNING: Could not get url for 
/javax/servlet/jsp/resources/jsp_2_1.xsd
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.DigesterFactory register
     [java] WARNING: Could not get url for 
/javax/servlet/jsp/resources/web-jsptaglibrary_1_1.dtd
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.DigesterFactory register
     [java] WARNING: Could not get url for 
/javax/servlet/jsp/resources/web-jsptaglibrary_1_2.dtd
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.DigesterFactory register
     [java] WARNING: Could not get url for 
/javax/servlet/jsp/resources/web-jsptaglibrary_2_0.xsd
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.DigesterFactory register
     [java] WARNING: Could not get url for 
/javax/servlet/jsp/resources/web-jsptaglibrary_2_1.xsd
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.catalina.startup.DigesterFactory register
     [java] WARNING: Could not get url for 
/javax/servlet/resources/j2ee_web_services_1_1.xsd
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.coyote.http11.Http11Protocol init
     [java] INFO: Initializing Coyote HTTP/1.1 on http-8100
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.coyote.http11.Http11Protocol start
     [java] INFO: Starting Coyote HTTP/1.1 on http-8100
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.tuscany.sca.http.tomcat.TomcatServer addServletMapping
     [java] INFO: Added Servlet mapping: 
http://localhost.localdomain:8100/FakeComponentA/ActrlPorts
     [java] Jul 3, 2008 12:23:09 PM 
org.apache.tuscany.sca.http.tomcat.TomcatServer addServletMapping
     [java] INFO: Added Servlet mapping: 
http://localhost.localdomain:8100/FakeComponentA/Tmp_double
     [java] SCA fakeCompA_node started. Test usage
     [java] test multiple task executions for three inputs
     [java] set inA = 50
     [java] Jul 3, 2008 12:23:09 PM fake_comp.A_fake_Impl <init>
     [java] INFO: An instance of fakeComponentA is created
     [java] Jul 3, 2008 12:23:09 PM fake_comp.A_fake_Impl setfakeUseA
     [java] INFO: Wire fakeUseTmpPortA
     [java] Jul 3, 2008 12:23:09 PM fake_comp.A_fake_Impl setfakeCtrlA
     [java] INFO: Wire fakeCtrlPortsA
     [java] Jul 3, 2008 12:23:09 PM fake_comp.A_fake_Impl set_double
     [java] INFO: Set an input on component A
     [java] Exception in thread "main" 
org.osoa.sca.ServiceRuntimeException: Target fault type cannot be 
resolved: null
     [java]     at 
org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:134)
     [java]     at 
org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:286)
     [java]     at 
org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:154)
     [java]     at $Proxy6.set_double(Unknown Source)
     [java]     at fake_comp.A_fake_Impl.set_double(A_fake_Impl.java:54)
     [java]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
     [java]     at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     [java]     at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     [java]     at java.lang.reflect.Method.invoke(Method.java:597)
     [java]     at 
org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:109)
     [java]     at 
org.apache.tuscany.sca.core.databinding.wire.PassByValueInterceptor.invoke(PassByValueInterceptor.java:108)
     [java]     at 
org.apache.tuscany.sca.binding.sca.impl.SCABindingInvoker.invoke(SCABindingInvoker.java:61)
     [java]     at 
org.apache.tuscany.sca.core.databinding.wire.PassByValueInterceptor.invoke(PassByValueInterceptor.java:108)
     [java]     at 
org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:286)
     [java]     at 
org.apache.tuscany.sca.core.invocation.JDKInvocationHandler.invoke(JDKInvocationHandler.java:154)
     [java]     at $Proxy6.set_double(Unknown Source)
     [java]     at 
node.ApplManagerWithFakeComp.main(ApplManagerWithFakeComp.java:78)
     [java] Caused by: org.apache.axis2.AxisFault: Connection refused
     [java]     at org.apache.axis2.AxisFault.makeFault(AxisFault.java:417)
     [java]     at 
org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:195)
     [java]     at 
org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:77)
     [java]     at 
org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:327)
     [java]     at 
org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:206)
     [java]     at 
org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:396)
     [java]     at 
org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:374)
     [java]     at 
org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:211)
     [java]     at 
org.apache.axis2.client.OperationClient.execute(OperationClient.java:163)
     [java]     at 
org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingInvoker.invokeTarget(Axis2BindingInvoker.java:118)
     [java]     at 
org.apache.tuscany.sca.binding.ws.axis2.Axis2BindingInvoker.invoke(Axis2BindingInvoker.java:89)
     [java]     at 
org.apache.tuscany.sca.binding.sca.axis2.impl.Axis2SCABindingInvoker.invoke(Axis2SCABindingInvoker.java:104)
     [java]     at 
org.apache.tuscany.sca.core.databinding.wire.DataTransformationInterceptor.invoke(DataTransformationInterceptor.java:78)
     [java]     ... 16 more
     [java] Caused by: java.net.ConnectException: Connection refused
     [java]     at java.net.PlainSocketImpl.socketConnect(Native Method)
     [java]     at 
java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
     [java]     at 
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
     [java]     at 
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
     [java]     at 
java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
     [java]     at java.net.Socket.connect(Socket.java:519)
     [java]     at java.net.Socket.connect(Socket.java:469)
     [java]     at java.net.Socket.<init>(Socket.java:366)
     [java]     at java.net.Socket.<init>(Socket.java:240)
     [java]     at 
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:79)
     [java]     at 
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:121)
     [java]     at 
org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:706)
     [java]     at 
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1321)
     [java]     at 
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:386)
     [java]     at 
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
     [java]     at 
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
     [java]     at 
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
     [java]     at 
org.apache.axis2.transport.http.AbstractHTTPSender.executeMethod(AbstractHTTPSender.java:520)
     [java]     at 
org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:191)
     [java]     ... 27 more
     [java] Java Result: 1


The trace on Node_compA is (I use a deamon approach to launch nodes):


03/07/2008 12:22:28 13792 jsvc.exec error: syscall failed in set_caps
03/07/2008 12:22:28 13792 jsvc.exec error: syscall failed in set_caps
Jul 3, 2008 12:22:28 PM node.GenericNode init
INFO: Node null: in init.
Jul 3, 2008 12:22:28 PM node.GenericNode start
INFO: Apache Tuscany SCA Node Node_compA starting...
Jul 3, 2008 12:22:28 PM 
org.apache.tuscany.sca.node.launcher.NodeLauncherUtil collectJARFiles
INFO: Runtime classpath: 93 JARs from 
/local/hbouzian/PostDoc/src/sca/tuscany-sca-1.2-incubating/modules
Jul 3, 2008 12:22:28 PM 
org.apache.tuscany.sca.node.launcher.NodeLauncherUtil collectJARFiles
INFO: Runtime classpath: 148 JARs from 
/local/hbouzian/PostDoc/src/sca/tuscany-sca-1.2-incubating/lib
Jul 3, 2008 12:22:28 PM org.apache.tuscany.sca.node.impl.NodeImpl <init>
INFO: Creating node: http://localhost:9990/node-image/Node_compA
Jul 3, 2008 12:22:30 PM org.apache.tuscany.sca.node.impl.NodeImpl <init>
INFO: CompositeURL : 
http://localhost:9990/composite-resolved/composite:node_compA;http://sample;Node_compA_comp 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Jul 3, 2008 12:22:30 PM org.apache.tuscany.sca.node.impl.NodeImpl 
configureNode
INFO: Loading contribution: 
file:/local/hbouzian/workspace/AseqBAppl/./src/main/resources/node_compA/
Jul 3, 2008 12:22:32 PM org.apache.tuscany.sca.node.impl.NodeImpl 
configureNode
INFO: Loading composite: 
http://localhost:9990/composite-resolved/composite:node_compA;http://sample;Node_compA_comp
Jul 3, 2008 12:22:32 PM org.apache.tuscany.sca.node.impl.NodeImpl start
INFO: Starting node: http://localhost:9990/node-image/Node_compA
Warning: Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor
Warning: Running an XSLT 1.0 stylesheet with an XSLT 2.0 processor
Jul 3, 2008 12:22:35 PM 
org.apache.tuscany.sca.host.webapp.WebAppServletHost addServletMapping
INFO: Added Servlet mapping: /ComponentActrl/Tmp_double
Jul 3, 2008 12:22:35 PM 
org.apache.tuscany.sca.host.webapp.WebAppServletHost addServletMapping
INFO: Added Servlet mapping: /ComponentActrl/ActrlPorts
Jul 3, 2008 12:22:35 PM node.GenericNode start
INFO: SCA Node Node_compA started.


********

in the trace, I expected a log message saying that an instance of a 
ComponentActrl is created when FakeComponentA tries to use one of its 
services. But it doesn't seem to be created!? At the same time I don't 
understand how the wires of FakeComponentA references to ComponentActrl 
services succeed

[java] Jul 3, 2008 12:23:09 PM fake_comp.A_fake_Impl setfakeUseA
[java] INFO: Wire fakeUseTmpPortA

without an errors like component or reference not found.

Am I wrong somewhere? Let me know if you need any additional information 
(code/xml descriptions).

Thank you for your help.
Hinde