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Posted to cvs@avalon.apache.org by mc...@apache.org on 2002/07/05 10:50:24 UTC
cvs commit: jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry ComponentDefinition.java DefaultRegistry.java Profile.java ServiceRegistry.java
mcconnell 2002/07/05 01:50:24
Modified: assembly/src/java/org/apache/excalibur/merlin/kernel
Container.java DefaultContainer.java
DefaultKernel.java Kernel.java
assembly/src/java/org/apache/excalibur/merlin/registry
ComponentDefinition.java DefaultRegistry.java
Profile.java ServiceRegistry.java
Log:
internal cleanup
Revision Changes Path
1.4 +10 -8 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/Container.java
Index: Container.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/Container.java,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- Container.java 4 Jul 2002 09:01:34 -0000 1.3
+++ Container.java 5 Jul 2002 08:50:23 -0000 1.4
@@ -9,6 +9,9 @@
package org.apache.excalibur.merlin.kernel;
import org.apache.excalibur.containerkit.verifier.VerifyException;
+import org.apache.excalibur.containerkit.metainfo.DependencyDescriptor;
+import org.apache.excalibur.merlin.registry.Profile;
+import org.apache.excalibur.merlin.registry.UnresolvedProviderException;
/**
* A service that provides support for the management of a set of component types
@@ -20,13 +23,12 @@
{
/**
- * Request the startup of the kernel.
+ * Return the profile of an installed component matching a dependency.
+ * @param dependency a consumer component dependecy declaration
+ * @return the supplier profile
+ * @exception UnresolvedProviderException if no provider available
*/
- void startup() throws Exception;
-
- /**
- * Request the shutdown of the kernel.
- */
- void shutdown();
+ Profile getProvider( DependencyDescriptor dependency )
+ throws UnresolvedProviderException;
}
1.6 +28 -11 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/DefaultContainer.java
Index: DefaultContainer.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/DefaultContainer.java,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- DefaultContainer.java 4 Jul 2002 19:49:27 -0000 1.5
+++ DefaultContainer.java 5 Jul 2002 08:50:23 -0000 1.6
@@ -36,6 +36,7 @@
import org.apache.avalon.framework.activity.Initializable;
import org.apache.avalon.framework.activity.Disposable;
import org.apache.avalon.framework.activity.Executable;
+import org.apache.avalon.framework.activity.Startable;
import org.apache.avalon.framework.CascadingRuntimeException;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.DefaultConfiguration;
@@ -69,6 +70,8 @@
import org.apache.excalibur.merlin.registry.DefaultRegistry;
import org.apache.excalibur.containerkit.verifier.VerifyException;
+import org.apache.excalibur.merlin.registry.Profile;
+import org.apache.excalibur.merlin.registry.UnresolvedProviderException;
/**
* Default container implementation that manages a registry of componet providers and
@@ -77,7 +80,7 @@
* @author <a href="mailto:mcconnell@apache.org">Stephen McConnell</a>
* @version $Revision$ $Date$
*/
-public class DefaultContainer extends DefaultRegistry implements Container
+public class DefaultContainer extends DefaultRegistry implements Container, Startable
{
//=======================================================================
// state
@@ -114,18 +117,16 @@
*/
public void contextualize( Context context ) throws ContextException
{
+ super.contextualize( context );
m_classloader = (ContainerClassLoader) context.get( CLASSLOADER_KEY );
+ m_map = (DependencyMap) context.get( MAP_KEY );
try
{
- m_map = (DependencyMap) context.get( MAP_KEY );
m_parent = (Container) context.get( CONTAINER_KEY );
- super.contextualize( context );
}
catch( ContextException e )
{
- DefaultContext c = new DefaultContext( context );
- c.put( CONTAINER_KEY, this );
- super.contextualize( c );
+ // root container
}
}
@@ -187,7 +188,23 @@
// Container
//=======================================================================
- public void startup() throws Exception
+ /**
+ * Return the profile of an installed component matching a dependency.
+ * @param dependency a consumer component dependency declaration
+ * @return the supplier profile
+ * @exception UnresolvedProviderException if no provider available
+ */
+ //public Profile getProvider( DependencyDescriptor dependency )
+ // throws UnresolvedProviderException
+ //{
+ // throw new UnresolvedProviderException( "not implemented", dependency );
+ //}
+
+ //======================================================================
+ // Startable
+ //======================================================================
+
+ public void start() throws Exception
{
//
@@ -204,11 +221,11 @@
Iterator iterator = m_containers.iterator();
while( iterator.hasNext() )
{
- ((Container)iterator.next()).startup();
+ ((Startable)iterator.next()).start();
}
}
- public void shutdown()
+ public void stop() throws Exception
{
//
@@ -220,7 +237,7 @@
Iterator iterator = m_containers.iterator();
while( iterator.hasNext() )
{
- ((Container)iterator.next()).shutdown();
+ ((Startable)iterator.next()).stop();
}
ComponentMetaData[] shutdown = m_map.getShutdownGraph();
for( int i=0; i<shutdown.length; i++ )
1.5 +11 -3 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/DefaultKernel.java
Index: DefaultKernel.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/DefaultKernel.java,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -r1.4 -r1.5
--- DefaultKernel.java 4 Jul 2002 09:01:35 -0000 1.4
+++ DefaultKernel.java 5 Jul 2002 08:50:23 -0000 1.5
@@ -29,6 +29,7 @@
import org.apache.avalon.excalibur.i18n.ResourceManager;
import org.apache.avalon.excalibur.i18n.Resources;
import org.apache.excalibur.configuration.ConfigurationUtil;
+import org.apache.avalon.framework.CascadingRuntimeException;
import org.apache.avalon.framework.logger.Logger;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.avalon.framework.logger.AvalonFormatter;
@@ -136,11 +137,18 @@
public void startup() throws Exception
{
- m_container.startup();
+ m_container.start();
}
public void shutdown()
{
- m_container.shutdown();
+ try
+ {
+ m_container.stop();
+ }
+ catch( Throwable e )
+ {
+ throw new CascadingRuntimeException("Unexpected error while stopping.", e );
+ }
}
}
1.4 +11 -2 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/Kernel.java
Index: Kernel.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/kernel/Kernel.java,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -r1.3 -r1.4
--- Kernel.java 4 Jul 2002 09:01:35 -0000 1.3
+++ Kernel.java 5 Jul 2002 08:50:23 -0000 1.4
@@ -13,7 +13,16 @@
* @author <a href="mailto:mcconnell@apache.org">Stephen McConnell</a>
* @version $Revision$ $Date$
*/
-public interface Kernel extends Container
+public interface Kernel
{
+ /**
+ * Request the startup of the kernel.
+ */
+ void startup() throws Exception;
+
+ /**
+ * Request the shutdown of the kernel.
+ */
+ void shutdown();
}
1.5 +4 -3 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/ComponentDefinition.java
Index: ComponentDefinition.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/ComponentDefinition.java,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -r1.4 -r1.5
--- ComponentDefinition.java 4 Jul 2002 09:01:35 -0000 1.4
+++ ComponentDefinition.java 5 Jul 2002 08:50:24 -0000 1.5
@@ -29,6 +29,7 @@
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.DefaultConfigurationBuilder;
import org.apache.avalon.framework.configuration.ConfigurationException;
+import org.apache.avalon.framework.configuration.DefaultConfiguration;
import org.apache.avalon.framework.context.Context;
import org.apache.avalon.framework.Version;
import org.apache.excalibur.containerkit.metainfo.ContextDescriptor;
@@ -128,7 +129,7 @@
if( m_criteria.length == 0 )
{
// create an implicit profile
- Profile profile = new Profile( m_registry, this );
+ Profile profile = m_registry.buildProfile( this, new DefaultConfiguration("component") );
m_profiles.put( profile.getName(), profile );
}
else
@@ -136,7 +137,7 @@
// use the explicit profiles
for( int i=0; i<m_criteria.length; i++ )
{
- Profile profile = new Profile( m_registry, this, m_criteria[i] );
+ Profile profile = m_registry.buildProfile( this, m_criteria[i] );
m_profiles.put( profile.getName(), profile );
}
}
1.10 +106 -47 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/DefaultRegistry.java
Index: DefaultRegistry.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/DefaultRegistry.java,v
retrieving revision 1.9
retrieving revision 1.10
diff -u -r1.9 -r1.10
--- DefaultRegistry.java 4 Jul 2002 09:01:36 -0000 1.9
+++ DefaultRegistry.java 5 Jul 2002 08:50:24 -0000 1.10
@@ -52,6 +52,7 @@
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.avalon.framework.service.DefaultServiceManager;
import org.apache.avalon.framework.service.ServiceException;
+import org.apache.avalon.framework.parameters.Parameters;
import org.apache.avalon.framework.Version;
import org.apache.avalon.framework.ExceptionUtil;
import org.apache.avalon.excalibur.extension.PackageRepository;
@@ -77,6 +78,7 @@
import org.apache.excalibur.merlin.kernel.Container;
import org.apache.excalibur.merlin.kernel.ContainerClassLoader;
import org.apache.excalibur.merlin.kernel.Verifiable;
+import org.apache.excalibur.configuration.ContextFactory;
/**
* Provides support for the maintenance of a registry of
@@ -149,6 +151,9 @@
private Hashtable m_profileMapping = new Hashtable();
+ /**
+ * Hashtable of all installed profiles keyed by profile name.
+ */
private Hashtable m_profiles = new Hashtable();
private DependencyMap m_map;
@@ -189,8 +194,15 @@
{
m_context = context;
m_classloader = (ContainerClassLoader) context.get( CLASSLOADER_KEY );
- m_parent = (Container) context.get( CONTAINER_KEY );
m_map = (DependencyMap) context.get( MAP_KEY );
+ try
+ {
+ m_parent = (Container) context.get( CONTAINER_KEY );
+ }
+ catch( ContextException e )
+ {
+ // root container
+ }
}
//=======================================================================
@@ -228,7 +240,8 @@
{
//
// register all of the the component providers implied by the classpath
- // manifest declarations
+ // manifest declarations as potential component type without resolution
+ // of dependencies
//
for( int i=0; i<blocks.length; i++ )
@@ -238,39 +251,46 @@
m_services.register( classname );
}
+ }
+ catch( Throwable e )
+ {
+ final String error = "Internal registry candidate registation failure.";
+ throw new RegistryException( error, e );
+ }
+
+ Configuration[] entries = m_config.getChildren( "component" );
+ try
+ {
//
// for all of the components declared in the application profiles,
- // install each one in the service repository - the side effect of
- // this is the buildup of the m_profiles table that will be used to
- // construct the application context
+ // register each one in the service repository
//
- Configuration[] entries = m_config.getChildren( "component" );
for( int i=0; i<entries.length; i++ )
{
- final Configuration factory = entries[i];
- final String name = factory.getAttribute("name");
- final String classname = factory.getAttribute("class");
-
+ final Configuration entry = entries[i];
+ final String classname = entry.getAttribute("class");
getLogger().debug("component configuration");
- getLogger().debug( ConfigurationUtil.list( factory ) );
- Profile profile = m_services.install( classname, name );
- populate( m_map, profile );
- //listProfile( profile );
+ getLogger().debug( ConfigurationUtil.list( entry ) );
+ ComponentType type = m_services.register( classname );
}
//
- // if its a container we need to instantiate it and verify it.
+ // for all of the component profiles declared in the container,
+ // install each of them
//
- if( m_config.getName().equals("containers"))
+ for( int i=0; i<entries.length; i++ )
{
- getLogger().debug(
- "nested containers ("
- + entries.length
- + ") pending validation."
- );
+ final Configuration entry = entries[i];
+ final String classname = entry.getAttribute("class");
+ ComponentType type = m_services.getComponentType( classname );
+ Profile profile = buildProfile( type, entry );
+ install( profile );
+
+ //listProfile( profile );
}
+
}
catch( Throwable e )
{
@@ -279,6 +299,40 @@
}
}
+ Profile buildProfile( ComponentType type, Configuration criteria )
+ throws ConfigurationException, UnresolvedProviderException
+ {
+ String name = criteria.getAttribute("name",null);
+ DependencyMetaData[] dependencies = resolveDependencies( type );
+ Parameters params = Parameters.fromConfiguration( criteria.getChild("parameters") );
+ Configuration config = criteria.getChild("configuration");
+ Context context = ContextFactory.createContextFromConfiguration(
+ null, criteria.getChild("context") );
+ return new Profile( name, dependencies, params, config, type, context );
+ }
+
+ private DependencyMetaData[] resolveDependencies( ComponentType type )
+ throws UnresolvedProviderException
+ {
+ Vector vector = new Vector();
+ DependencyDescriptor[] deps = type.getComponentInfo().getDependencies();
+ for( int i=0; i<deps.length; i++ )
+ {
+ if( !deps[i].isOptional() )
+ {
+ final String role = deps[i].getRole();
+ final Profile provider = getProvider( deps[i] );
+ DependencyMetaData data = new DependencyMetaData(
+ role,
+ provider.getName()
+ );
+ vector.add( data );
+ }
+ }
+ return (DependencyMetaData[])
+ vector.toArray( new DependencyMetaData[0] );
+ }
+
//=======================================================================
// Executable
//=======================================================================
@@ -316,6 +370,19 @@
//=======================================================================
/**
+ * Return the privider for a dependency.
+ * @param dependency a consumer component dependecy declaration
+ * @return the installed supplier profile
+ */
+ public Profile getProvider( DependencyDescriptor dependency )
+ throws UnresolvedProviderException
+ {
+ Profile profile = getCandidateProfile( dependency );
+ install( profile );
+ return profile;
+ }
+
+ /**
* Return the preferred profile for a depedency.
* @param dependency a consumer component dependecy declaration
* @return the preferred candidate supplier profile
@@ -323,7 +390,19 @@
public Profile getCandidateProfile( DependencyDescriptor dependency )
throws UnresolvedProviderException
{
- return m_services.getCandidateProfile( dependency );
+ //try
+ //{
+ return m_services.getCandidateProfile( dependency );
+ //}
+ //catch( UnresolvedProviderException upe )
+ //{
+ // in this case, we can try to locate a service provider
+ // in the parent container
+
+ // if( m_parent != null )
+ // return m_parent.getProvider( dependency );
+ // throw upe;
+ //}
}
/**
@@ -343,34 +422,14 @@
*/
void install( Profile profile )
{
- m_services.install( profile );
+ m_profiles.put( profile.getName(), profile );
+ m_map.add( profile );
}
//=======================================================================
// implementation
//=======================================================================
- private void populate( DependencyMap map, Profile profile )
- {
- map.add( profile );
- DependencyMetaData[] dependencies = profile.getDependencies();
- for( int j=0; j<dependencies.length; j++ )
- {
- populate( map, dependencies[j] );
- }
- }
-
- private void populate( DependencyMap map, DependencyMetaData dependency )
- {
- Profile profile = m_services.getInstalledProfile( dependency.getProviderName() );
- map.add( profile );
- DependencyMetaData[] dependencies = profile.getDependencies();
- for( int j=0; j<dependencies.length; j++ )
- {
- populate( map, dependencies[j] );
- }
- }
-
/**
* Test if the registry can resolve a request for a component with the supplied classname
* @param classname a component or service class name
@@ -455,8 +514,8 @@
DependencyMetaData[] dependencies = profile.getDependencies();
for( int j=0; j<dependencies.length; j++ )
{
- Profile p = m_services.getInstalledProfile( dependencies[j].getProviderName() );
- listProfile( p, reported );
+ Profile dependent = (Profile) m_profiles.get( dependencies[j].getProviderName() );
+ listProfile( dependent, reported );
}
}
1.6 +7 -75 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/Profile.java
Index: Profile.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/Profile.java,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- Profile.java 4 Jul 2002 09:01:36 -0000 1.5
+++ Profile.java 5 Jul 2002 08:50:24 -0000 1.6
@@ -68,75 +68,17 @@
*/
public class Profile extends ComponentMetaData
{
- private static String getAbstractName( Configuration profile )
- {
- return profile.getAttribute("name",null);
- }
-
- private static DependencyMetaData[] getDependencyMetaData(
- final DefaultRegistry registry, final ComponentType type )
- throws UnresolvedProviderException
- {
- Vector vector = new Vector();
- DependencyDescriptor[] deps = type.getComponentInfo().getDependencies();
- for( int i=0; i<deps.length; i++ )
- {
- if( !deps[i].isOptional() )
- {
- final String role = deps[i].getRole();
- final Profile provider = registry.getCandidateProfile( deps[i] );
- DependencyMetaData data = new DependencyMetaData(
- role,
- provider.getName()
- );
- vector.add( data );
- }
- }
- return (DependencyMetaData[]) vector.toArray( new DependencyMetaData[0] );
- }
private final ComponentType m_type;
- private final Configuration m_profile;
-
- private final DefaultRegistry m_registry;
-
- /**
- * Creation of a default profile.
- * @param type the component type that this profile is qualifying
- */
- public Profile( final DefaultRegistry registry, final ComponentType type )
- throws ConfigurationException, UnresolvedProviderException
+ private final Context m_context;
+ public Profile( String name, DependencyMetaData[] dependencies, Parameters params,
+ Configuration config, ComponentType type, Context context )
{
- this( registry, type, new DefaultConfiguration("profile") );
- }
-
- /**
- * Creation of a profile of a component type. The
- * configuration is a profile instance containing criteria for for the
- * profiles default configuration, parameters and content.
- *
- * @param type the component type that this profile is qualifying
- * @param profile a configuration instance possibly containing a context,
- * parameters and configuration element.
- * @param name the profile name
- */
- public Profile(
- final DefaultRegistry registry, final ComponentType type, final Configuration profile )
- throws ConfigurationException, UnresolvedProviderException
- {
- super(
- getAbstractName( profile ),
- getDependencyMetaData( registry, type ),
- Parameters.fromConfiguration( profile.getChild("paramerters") ),
- profile.getChild("configuration"),
- type.getComponentInfo()
- );
+ super( name, dependencies, params, config, type.getComponentInfo() );
m_type = type;
- m_profile = profile;
- m_registry = registry;
- m_registry.install( this );
+ m_context = context;
}
/**
@@ -154,17 +96,7 @@
*/
public Context getContext( Context parent )
{
- try
- {
- Configuration criteria = m_profile.getChild("context");
- return ContextFactory.createContextFromConfiguration( parent, criteria );
- }
- catch( Throwable e )
- {
- throw new ProfileRuntimeException(
- "Unexpected error while creating context.", e );
- }
-
+ return m_context;
}
public String toString()
1.6 +16 -63 jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/ServiceRegistry.java
Index: ServiceRegistry.java
===================================================================
RCS file: /home/cvs/jakarta-avalon-excalibur/assembly/src/java/org/apache/excalibur/merlin/registry/ServiceRegistry.java,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -r1.5 -r1.6
--- ServiceRegistry.java 4 Jul 2002 09:01:36 -0000 1.5
+++ ServiceRegistry.java 5 Jul 2002 08:50:24 -0000 1.6
@@ -58,11 +58,6 @@
*/
private Hashtable m_types = new Hashtable();
- /**
- * The set of installed profiles keyed by profile name.
- */
- private Hashtable m_installed = new Hashtable();
-
private DependencyMap m_map;
//=======================================================================
@@ -122,51 +117,6 @@
}
/**
- * Install a provider and return the profile. The side effect of this operation
- * is the resolution of profiles for the runtime application context based on dependecies
- * declared by the component identified by the classname.
- *
- * @param classname the classname of the provider to install
- * @param name the component profile to use for the provider
- */
- public Profile install( String classname, String name ) throws Exception
- {
- return install( register( classname ).getProfile( name ) );
- }
-
- /**
- * Install a provider and return the profile.
- * @param classname the classname of the provider to install
- * @param name the component profile to use for the provider
- */
- public Profile install( Profile profile )
- {
- if( m_installed.get( profile.getName() ) != null )
- return profile;
- m_installed.put( profile.getName(), profile );
- return profile;
- }
-
- /**
- * Return the set of profiles representing the application scope.
- * @return the installed profiles
- */
- public Profile[] getInstalledProfiles()
- {
- return (Profile[]) m_installed.values().toArray( new Profile[0] );
- }
-
- /**
- * Returns a named profile.
- * @return the named profile
- */
- public Profile getInstalledProfile( String name )
- {
- return (Profile) m_installed.get( name );
- }
-
-
- /**
* Returns the set of component types know to the registry.
* @return the set of component types registered with the registry
*/
@@ -195,20 +145,24 @@
return (ComponentType) m_types.get( classname );
}
+ /**
+ * Returns the set of candidate profiles matching the service description.
+ * @param service the service designator qualifying candidate providers
+ * @return the set of candidates
+ */
public Profile[] getProfiles( ServiceDesignator service )
{
- getLogger().debug("getting profiles for service: " + service );
- Vector vector = new Vector();
- getProfiles( m_map, vector );
+ ServiceTable table = getTable( service );
+ if( table == null )
+ throw new IllegalArgumentException("unknown service designator");
//
// before argregating profiles, make sure that all of the components
// getProfiles() operation has been invoked - which ensures that
- // the type has been properly initialized (yes - it sucks but it works).
+ // the type has been properly initialized
//
- ServiceTable table = getTable( service );
ComponentType[] types = table.getTypes();
for( int i=0; i<types.length; i++ )
{
@@ -225,12 +179,11 @@
//
// with the pre-init of profiles complete, we can go ahead and get the
// set of available profiles in the knowlege that everything is behaving
- // consitently
+ // consistently
//
+ Vector vector = new Vector();
ComponentType[] components = table.getTypes();
- //getLogger().debug("located table: = "
- // + table + ", size: " + ", " + components.length );
for( int i=0; i<components.length; i++ )
{
try
@@ -251,10 +204,10 @@
return (Profile[]) vector.toArray( new Profile[0] );
}
- private void getProfiles( DependencyMap map, Vector vector )
- {
- // not implemented yet
- }
+ //private void getProfiles( DependencyMap map, Vector vector )
+ //{
+ // // not implemented yet
+ //}
public Profile getCandidateProfile( DependencyDescriptor dependency )
throws UnresolvedProviderException
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