Olaf:
Can you set the merlin.info property to true and post the initial parameter list.
Stephen.
Olaf Bergner wrote:
I have - yet again - a minimal deployment scenario (1 service interface, 1 implementing component) I am struggling with. If I do a
merlin -execute conf/component-manager.block
(see below for more info) I get
[INFO ] (kernel): installing: file:/${user.dir}/conf/component-manager.block [INFO ] (components.component-manager): Executing [INFO ] (components.component-manager): Finished executing ... [INFO ] (kernel): dissassembly phase [INFO ] (kernel): disposal phase
i.e. all goes smoothly. If, however, I deploy the block using a custom testcase derived from AbstractMerlinTestCase with only
final public void testAcquisition() throws Exception { final DAOFactoryBuilder builder = (DAOFactoryBuilder) resolve(RES_PATH);
assertNotNull( "resolve(\"" + RES_PATH + "\") returned <null>.", builder); }
added, I get an exception complaining that the xinfo file for the component to be deployed could not be found - that is TypeBuilder fails to locate the corresponding .xinfo file within deployment jar. Needless to say that it is definitely there, as merlin cli well notices. I took great care to ensure that melin cli as well as my testcase do deploy the exact same block containing the exact same info. The merlin.deployment entry in merlin.properties points to file:/${user.dir}/conf/component-manager.block, the block merlin cli swallows without further ado. I manually copied the generated jars to merlin cli's repository, opened them and verified that they are exactly the same as those used by my testcase.
According to the source in TypeBuilder.buildFromXMLDescriptor() the problem might be tracked back to classLoader.getResourceAsStream(classname.xinfo) failing to load the existing xinfo file. But why should this happen? classLoader is the classloader that loaded the class itself, it should also load the .xinfo file in the same package. Or is it a classloader issue?
I wrote an embedded kernel that closely taking AbstractMerlinTestCase as a blueprint, and it shows the exact same behaviour. Naturally, I would be glad if anybody could explain to me what's going on here and how I might fix my kernel.
Cheers,
Olaf
P.S.: One minor issue: the line
final String message = REZ.getString( "builder.missing-info.error", path );
in TypeBuilder.buildFromXMLDescriptor() should probably be changed to
final String message = REZ.getString( "builder.missing-info.error", classname );
Otherwise, as you will see below, the exception message is a little misleading.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++
Debug + Stacktrace:
[DEBUG ] (components.classloader.scanner): scanning: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/model-api-0.1.jar [DEBUG ] (components.classloader.scanner): scanning: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/model-spi-0.1.jar [DEBUG ] (components.classloader.scanner): scanning: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/model-impl-0.1.jar [DEBUG ] (components.classloader.scanner): scanning: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/persistence-api-0.1.jar [DEBUG ] (components.classloader.scanner): scanning: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/persistence-impl-0.1.jar [DEBUG ] (components.classloader.scanner): scanning: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/component-api-0.1.jar [DEBUG ] (components.classloader.scanner): scanning: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/component-impl-0.1.jar ---- exception report ---------------------------------------------------------- Exception: org.apache.avalon.merlin.KernelException Message: Install failure: file:/C:/Projekte/OBergner/EclipseWorkspace/manplan-merlin/component/impl/co nf/component-manager.block ---- cause --------------------------------------------------------------------- Exception: org.apache.avalon.composition.model.ModelException Message: Could not create classloader. ---- cause --------------------------------------------------------------------- Exception: org.apache.avalon.composition.model.ModelException Message: Unexpected error while scanning jar file: file:/C:/Dokumente und Einstellungen/Otto Berg/.maven/repository/manplan-merlin/jars/component-impl-0.1.jar ---- cause --------------------------------------------------------------------- Exception: java.lang.Exception Message: Unable to locate resource from which to load info for component implemented by class "manplan/merlin/component/impl/persistence/DefaultDAOFactoryBuilder.xinfo". ---- stack trace --------------------------------------------------------------- java.lang.Exception: Unable to locate resource from which to load info for component implemented by class "manplan/merlin/component/impl/persistence/DefaultDAOFactoryBuilder.xinfo". org.apache.avalon.meta.info.builder.TypeBuilder.buildFromXMLDescriptor(TypeB uilder.java:186) org.apache.avalon.meta.info.builder.TypeBuilder.buildType(TypeBuilder.java:1 04) org.apache.avalon.composition.model.impl.Scanner.addType(Scanner.java:377) org.apache.avalon.composition.model.impl.Scanner.scanJarFile(Scanner.java:25 8) org.apache.avalon.composition.model.impl.Scanner.scanJarFileURL(Scanner.java :239) org.apache.avalon.composition.model.impl.Scanner.scanURL(Scanner.java:197) org.apache.avalon.composition.model.impl.Scanner.scan(Scanner.java:170) org.apache.avalon.composition.model.impl.DefaultClassLoaderModel.<init>(Defa ultClassLoaderModel.java:235) org.apache.avalon.composition.model.impl.DefaultClassLoaderModel.createClass LoaderModel(DefaultClassLoaderModel.java:129) org.apache.avalon.composition.model.impl.DefaultContainmentModel.createConta inmentModel(DefaultContainmentModel.java:464) org.apache.avalon.composition.model.impl.DefaultContainmentModel.createConta inmentModel(DefaultContainmentModel.java:427) org.apache.avalon.composition.model.impl.DefaultContainmentModel.createConta inmentModel(DefaultContainmentModel.java:663) org.apache.avalon.composition.model.impl.DefaultContainmentModel.addContainm entModel(DefaultContainmentModel.java:288) org.apache.avalon.composition.model.impl.DefaultContainmentModel.addModel(De faultContainmentModel.java:282) org.apache.avalon.merlin.impl.DefaultFactory.create(DefaultFactory.java:488) org.apache.avalon.merlin.unit.AbstractMerlinTestCase.setUp(AbstractMerlinTes tCase.java:198) junit.framework.TestCase.runBare(TestCase.java:125) junit.framework.TestResult$1.protect(TestResult.java:106) junit.framework.TestResult.runProtected(TestResult.java:124) junit.framework.TestResult.run(TestResult.java:109) junit.framework.TestCase.run(TestCase.java:118) junit.framework.TestSuite.runTest(TestSuite.java:208) junit.framework.TestSuite.run(TestSuite.java:203) org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRu nner.java:392) org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner. java:276) org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner .java:167) ---------------------------------------------------------------------------- ----
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
component-manager.block:
<container name="components">
<services> <service type="manplan.merlin.component.api.ComponentManager"> <source>component-manager</source> </service> </services>
<classloader> <classpath> <repository> <resource id="manplan-merlin:model-api" version="0.1"/> <resource id="manplan-merlin:model-spi" version="0.1"/> <resource id="manplan-merlin:model-impl" version="0.1"/> <resource id="manplan-merlin:persistence-api" version="0.1"/> <resource id="manplan-merlin:persistence-impl" version="0.1"/> <resource id="manplan-merlin:component-api" version="0.1"/> <resource id="manplan-merlin:component-impl" version="0.1"/> <resource id="log4j:log4j" version="1.2.8"/> <resource id="hibernate:hibernate" version="2.1.1"/> <resource id="commons-collections:commons-collections" version="3.0-dev2"/> <resource id="dom4j:dom4j" version="1.4"/> </repository> </classpath> </classloader>
<component name="component-manager" class="manplan.merlin.component.impl.DefaultComponentManager" activation="startup"> </component>
</container>
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++
manplan/merlin/component/impl/DefaultComponentManager.xinfo (for what it's worth):
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE type PUBLIC "-//AVALON/Type DTD Version 1.0//EN" "http://avalon.apache.org/dtds/meta/type_1_1.dtd"; >
<type> <info> <name>component-manager</name> <version>0.1.0</version> <lifestyle>singleton</lifestyle> </info> <services> <service type="manplan.merlin.component.api.ComponentManager"/> </services> </type>
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