/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.deployers.structure.spi.helpers;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import java.util.HashSet;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.CopyOnWriteArraySet;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.DependencyInfo;
import org.jboss.deployers.client.spi.Deployment;
import org.jboss.deployers.spi.DeploymentException;
import org.jboss.deployers.spi.DeploymentState;
import org.jboss.deployers.spi.attachments.helpers.ManagedObjectsWithTransientAttachmentsImpl;
import org.jboss.deployers.structure.spi.ClassLoaderFactory;
import org.jboss.deployers.structure.spi.DeploymentContext;
import org.jboss.deployers.structure.spi.DeploymentContextVisitor;
import org.jboss.deployers.structure.spi.DeploymentResourceLoader;
import org.jboss.deployers.structure.spi.DeploymentUnit;
import org.jboss.deployers.structure.spi.scope.ScopeBuilder;
import org.jboss.deployers.structure.spi.scope.helpers.DefaultScopeBuilder;
import org.jboss.logging.Logger;
import org.jboss.metadata.spi.MetaData;
import org.jboss.metadata.spi.MutableMetaData;
import org.jboss.metadata.spi.context.MetaDataContext;
import org.jboss.metadata.spi.loader.MutableMetaDataLoader;
import org.jboss.metadata.spi.repository.MutableMetaDataRepository;
import org.jboss.metadata.spi.retrieval.MetaDataRetrieval;
import org.jboss.metadata.spi.scope.ScopeKey;
/**
* AbstractDeploymentContext.
*
* @author <a href="adrian@jboss.org">Adrian Brock</a>
* @author Scott.Stark@jboss.org
* @version $Revision: 1.1 $
*/
public class AbstractDeploymentContext extends ManagedObjectsWithTransientAttachmentsImpl implements DeploymentContext
{
/** The serialVersionUID */
private static final long serialVersionUID = 7368360479461613969L;
/** The log */
private static final Logger log = Logger.getLogger(AbstractDeploymentContext.class);
/** The name */
private String name;
/** The controller context names - should be serializable */
private Set<Object> controllerContextNames;
/** The simple name */
private String simpleName;
/** The relative path */
private String relativePath;
/** The deployment state */
private DeploymentState state;
/** Throwable */
private Throwable problem;
/** The deployment */
private Deployment deployment;
/** The deployment unit */
private transient DeploymentUnit unit;
/** The class loader */
private transient ClassLoader classLoader;
/** The class loader factory for this deployment */
private transient ClassLoaderFactory classLoaderFactory;
/** The resource classloader */
private transient ClassLoader resourceClassLoader;
/** Whether this deployment was processed */
private boolean deployed;
/** The parent context */
private DeploymentContext parent;
/** The types of deployments this has been identified as */
private Set<String> deploymentTypes = new CopyOnWriteArraySet<String>();
/** The child contexts */
private SortedSet<DeploymentContext> children;
/** The component contexts */
private List<DeploymentContext> components = new CopyOnWriteArrayList<DeploymentContext>();
/** The relative order */
private int relativeOrder;
/** The context comparator */
private Comparator<DeploymentContext> comparator = DefaultDeploymentContextComparator.INSTANCE;
/** The scope */
private ScopeKey scope;
/** The mutable scope */
private ScopeKey mutableScope;
/**
* Get the scope builder for a deployment context
*
* @param deploymentContext the deployment context
* @return the scope builder
*/
public static ScopeBuilder getScopeBuilder(DeploymentContext deploymentContext)
{
if (deploymentContext == null)
throw new IllegalArgumentException("Null deployment context");
ScopeBuilder builder = deploymentContext.getTransientAttachments().getAttachment(ScopeBuilder.class);
if (builder != null)
return builder;
DeploymentContext parent = deploymentContext.getParent();
if (parent != null)
return getScopeBuilder(parent);
return DefaultScopeBuilder.INSTANCE;
}
/**
* Get the repository for a deployment context
*
* @param deploymentContext the deployment context
* @return the repository
*/
public static MutableMetaDataRepository getRepository(DeploymentContext deploymentContext)
{
if (deploymentContext == null)
throw new IllegalArgumentException("Null deployment context");
MutableMetaDataRepository repository = deploymentContext.getTransientAttachments().getAttachment(MutableMetaDataRepository.class);
if (repository != null)
return repository;
DeploymentContext parent = deploymentContext.getParent();
if (parent == null)
return null;
return getRepository(parent);
}
/**
* Cleanup the repository
*
* @param deploymentContext the deployment context
*/
public static void cleanupRepository(DeploymentContext deploymentContext)
{
MutableMetaDataRepository repository = getRepository(deploymentContext);
if (repository == null)
return;
try
{
ScopeKey scope = deploymentContext.getScope();
repository.removeMetaDataRetrieval(scope);
}
catch (Throwable ignored)
{
}
try
{
ScopeKey scope = deploymentContext.getMutableScope();
repository.removeMetaDataRetrieval(scope);
}
catch (Throwable ignored)
{
}
}
/**
* Get the metadata for a deployment context
*
* @param deploymentContext the deployment context
* @return the metaData
*/
public static MetaData getMetaData(DeploymentContext deploymentContext)
{
MutableMetaDataRepository repository = getRepository(deploymentContext);
if (repository == null)
return null;
MetaData metaData = repository.getMetaData(deploymentContext.getScope());
if (metaData == null)
{
initMetaDataRetrieval(repository, deploymentContext);
metaData = repository.getMetaData(deploymentContext.getScope());
}
return metaData;
}
/**
* Get the mutable metadata for a deployment context
*
* @param deploymentContext the deployment context
* @return the metaData
*/
public static MutableMetaDataLoader getMutableMetaData(DeploymentContext deploymentContext)
{
MutableMetaDataRepository repository = getRepository(deploymentContext);
if (repository == null)
return null;
ScopeKey mutableScope = deploymentContext.getMutableScope();
MetaDataRetrieval retrieval = repository.getMetaDataRetrieval(mutableScope);
if (retrieval == null)
{
initMutableMetaDataRetrieval(repository, deploymentContext);
retrieval = repository.getMetaDataRetrieval(mutableScope);
}
// Nothing
if (retrieval == null)
return null;
// This is mutable
if (retrieval instanceof MutableMetaDataLoader)
return (MutableMetaDataLoader) retrieval;
// We have a context, see if there is a mutable in the locals
if (retrieval instanceof MetaDataContext)
{
MetaDataContext context = (MetaDataContext) retrieval;
List<MetaDataRetrieval> locals = context.getLocalRetrievals();
if (locals != null)
{
for (MetaDataRetrieval local : locals)
{
if (local instanceof MutableMetaDataLoader)
return (MutableMetaDataLoader) local;
}
}
}
return null;
}
/**
* Initialise the metadata retrieval for a deployment context
*
* @param repository the meta data repository
* @param deploymentContext the deployment context
*/
private static void initMetaDataRetrieval(MutableMetaDataRepository repository, DeploymentContext deploymentContext)
{
if (deploymentContext == null)
throw new IllegalArgumentException("Null deployment context");
ScopeBuilder builder = deploymentContext.getTransientAttachments().getAttachment(ScopeBuilder.class);
if (builder == null)
builder = DefaultScopeBuilder.INSTANCE;
builder.initMetaDataRetrieval(repository, deploymentContext);
}
/**
* Initialise the metadata retrieval for a deployment context
*
* @param repository the meta data repository
* @param deploymentContext the deployment context
*/
private static void initMutableMetaDataRetrieval(MutableMetaDataRepository repository, DeploymentContext deploymentContext)
{
if (deploymentContext == null)
throw new IllegalArgumentException("Null deployment context");
ScopeBuilder builder = deploymentContext.getTransientAttachments().getAttachment(ScopeBuilder.class);
if (builder == null)
builder = DefaultScopeBuilder.INSTANCE;
builder.initMutableMetaDataRetrieval(repository, deploymentContext);
}
/**
* For serialization
*/
public AbstractDeploymentContext()
{
}
/**
* Create a new AbstractDeploymentContext.
*
* @param name the name
* @param relativePath the relative path to the top of the deployment
* @throws IllegalArgumentException if the name is null
*/
public AbstractDeploymentContext(String name, String relativePath)
{
this(name, name, relativePath);
}
/**
* Create a new AbstractDeploymentContext.
*
* @param name the name
* @param simpleName the simple name
* @param relativePath the relative path to the top of the deployment
* @throws IllegalArgumentException if the name is null
*/
public AbstractDeploymentContext(String name, String simpleName, String relativePath)
{
if (name == null)
throw new IllegalArgumentException("Null name");
if (relativePath == null)
throw new IllegalArgumentException("Null relative path");
this.name = name;
this.simpleName = simpleName;
if (simpleName == null)
this.simpleName = name;
this.relativePath = relativePath;
}
public String getName()
{
return name;
}
public Set<Object> getControllerContextNames()
{
return controllerContextNames != null ? Collections.unmodifiableSet(controllerContextNames) : null;
}
public synchronized void addControllerContextName(Object name)
{
if (controllerContextNames == null)
controllerContextNames = new HashSet<Object>();
controllerContextNames.add(name);
}
public synchronized void removeControllerContextName(Object name)
{
if (controllerContextNames != null)
{
controllerContextNames.remove(name);
if (controllerContextNames.isEmpty())
controllerContextNames = null;
}
else
log.warn("Removing name on null names: " + name);
}
public String getSimpleName()
{
return simpleName;
}
public String getRelativePath()
{
return relativePath;
}
public int getRelativeOrder()
{
return relativeOrder;
}
public void setRelativeOrder(int relativeOrder)
{
this.relativeOrder = relativeOrder;
}
public Comparator<DeploymentContext> getComparator()
{
return comparator;
}
public void setComparator(Comparator<DeploymentContext> comparator)
{
if (comparator == null)
comparator = DefaultDeploymentContextComparator.INSTANCE;
this.comparator = comparator;
}
public ScopeKey getScope()
{
if (scope == null)
{
ScopeBuilder builder = getScopeBuilder(this);
scope = builder.getDeploymentScope(this);
}
return scope;
}
public void setScope(ScopeKey scope)
{
this.scope = scope;
}
public ScopeKey getMutableScope()
{
if (mutableScope == null)
{
ScopeBuilder builder = getScopeBuilder(this);
mutableScope = builder.getMutableDeploymentScope(this);
}
return mutableScope;
}
public void setMutableScope(ScopeKey mutableScope)
{
this.mutableScope = mutableScope;
}
public MetaData getMetaData()
{
return getMetaData(this);
}
public MutableMetaData getMutableMetaData()
{
return getMutableMetaData(this);
}
public DeploymentState getState()
{
return state;
}
public void setState(DeploymentState state)
{
if (state == null)
throw new IllegalArgumentException("Null state");
this.state = state;
}
public Deployment getDeployment()
{
return deployment;
}
public void setDeployment(Deployment deployment)
{
if (deployment == null)
throw new IllegalArgumentException("Null deployment");
this.deployment = deployment;
}
public DeploymentUnit getDeploymentUnit()
{
if (unit == null)
unit = createDeploymentUnit();
return unit;
}
public void setDeploymentUnit(DeploymentUnit unit)
{
this.unit = unit;
}
public ClassLoader getClassLoader()
{
return classLoader;
}
public void setClassLoader(ClassLoader classLoader)
{
this.classLoader = classLoader;
if (classLoader != null)
log.trace("ClassLoader for " + name + " is " + classLoader);
}
public boolean createClassLoader(ClassLoaderFactory factory) throws DeploymentException
{
if (factory == null)
throw new IllegalArgumentException("Null factory");
ClassLoader cl = getClassLoader();
if (cl != null)
return false;
try
{
cl = factory.createClassLoader(getDeploymentUnit());
if (cl != null)
{
setClassLoader(cl);
this.classLoaderFactory = factory;
}
else
{
// No classloader, use the deployer's classloader
setClassLoader(Thread.currentThread().getContextClassLoader());
}
}
catch (Throwable t)
{
throw DeploymentException.rethrowAsDeploymentException("Error creating classloader for " + getName(), t);
}
return true;
}
public void removeClassLoader()
{
if (classLoaderFactory == null)
return;
try
{
classLoaderFactory.removeClassLoader(getDeploymentUnit());
}
catch (Throwable t)
{
log.warn("Error removing classloader for " + getName(), t);
}
classLoaderFactory = null;
setClassLoader(null);
}
public void removeClassLoader(ClassLoaderFactory factory)
{
if (classLoaderFactory == factory)
removeClassLoader();
}
public boolean isTopLevel()
{
return parent == null;
}
public DeploymentContext getTopLevel()
{
DeploymentContext result = this;
DeploymentContext parent = getParent();
while (parent != null)
{
result = parent;
parent = parent.getParent();
}
return result;
}
public DeploymentContext getParent()
{
return parent;
}
public void setParent(DeploymentContext parent)
{
if (parent != null && this.parent != null)
throw new IllegalStateException("Context already has a parent " + getName());
this.parent = parent;
}
public List<DeploymentContext> getChildren()
{
if (children == null || children.isEmpty())
return Collections.emptyList();
return new ArrayList<DeploymentContext>(children);
}
public void addChild(DeploymentContext child)
{
if (child == null)
throw new IllegalArgumentException("Null child");
if (children == null)
children = new TreeSet<DeploymentContext>(comparator);
children.add(child);
}
public boolean removeChild(DeploymentContext child)
{
if (child == null)
throw new IllegalArgumentException("Null child");
if (children == null)
return false;
return children.remove(child);
}
public boolean isComponent()
{
return false;
}
public List<DeploymentContext> getComponents()
{
return Collections.unmodifiableList(components);
}
public void addComponent(DeploymentContext component)
{
if (component == null)
throw new IllegalArgumentException("Null component");
deployed();
components.add(component);
log.debug("Added component " + component.getName() + " to " + getName());
}
public boolean removeComponent(DeploymentContext component)
{
if (component == null)
throw new IllegalArgumentException("Null component");
List<DeploymentContext> componentComponents = component.getComponents();
if (componentComponents.isEmpty() == false)
log.warn("Removing component " + name + " which still has components " + componentComponents);
boolean result = components.remove(component);
component.cleanup();
if (result)
log.debug("Removed component " + component.getName() + " from " + getName());
return result;
}
public ClassLoader getResourceClassLoader()
{
if (resourceClassLoader != null)
return resourceClassLoader;
DeploymentResourceLoader loader = getResourceLoader();
resourceClassLoader = new DeploymentResourceClassLoader(loader);
return resourceClassLoader;
}
public DeploymentResourceLoader getResourceLoader()
{
return EmptyResourceLoader.INSTANCE;
}
public DependencyInfo getDependencyInfo()
{
ControllerContext controllerContext = getTransientAttachments().getAttachment(ControllerContext.class);
if (controllerContext != null)
return controllerContext.getDependencyInfo();
else
{
DeploymentContext parent = getParent();
if (parent == null)
throw new IllegalStateException("Deployment ControllerContext has not been set");
return parent.getDependencyInfo();
}
}
public void visit(DeploymentContextVisitor visitor) throws DeploymentException
{
if (visitor == null)
throw new IllegalArgumentException("Null visitor");
visit(this, visitor);
}
/**
* Visit a context
*
* @param context the context
* @param visitor the visitor
* @throws DeploymentException for any error
*/
private void visit(DeploymentContext context, DeploymentContextVisitor visitor) throws DeploymentException
{
visitor.visit(context);
try
{
List<DeploymentContext> children = context.getChildren();
if (children.isEmpty())
return;
DeploymentContext[] childContexts = children.toArray(new DeploymentContext[children.size()]);
for (int i = 0; i < childContexts.length; ++i)
{
if (childContexts[i] == null)
throw new IllegalStateException("Null child context for " + context.getName() + " children=" + children);
try
{
visit(childContexts[i], visitor);
}
catch (Throwable t)
{
for (int j = i-1; j >= 0; --j)
visitError(childContexts[j], visitor, true);
throw DeploymentException.rethrowAsDeploymentException("Error visiting: " + childContexts[i].getName(), t);
}
}
}
catch (Throwable t)
{
visitError(context, visitor, false);
throw DeploymentException.rethrowAsDeploymentException("Error visiting: " + context.getName(), t);
}
}
/**
* Unwind the visit invoking the previously visited context's error handler
*
* @param context the context
* @param visitor the visitor
* @param visitChildren whether to visit the children
* @throws DeploymentException for any error
*/
private void visitError(DeploymentContext context, DeploymentContextVisitor visitor, boolean visitChildren) throws DeploymentException
{
if (visitChildren)
{
List<DeploymentContext> children = context.getChildren();
if (children.isEmpty())
return;
for (DeploymentContext child : children)
{
try
{
visitError(child, visitor, true);
}
catch (Throwable t)
{
log.warn("Error during visit error: " + child.getName(), t);
}
}
}
try
{
visitor.error(context);
}
catch (Throwable t)
{
log.warn("Error during visit error: " + context.getName(), t);
}
}
public Throwable getProblem()
{
return problem;
}
public void setProblem(Throwable problem)
{
this.problem = problem;
}
public boolean isDeployed()
{
return deployed;
}
public void deployed()
{
deployed = true;
}
public void cleanup()
{
cleanupRepository(this);
}
@Override
public String toString()
{
StringBuilder buffer = new StringBuilder();
buffer.append(getClass().getSimpleName());
buffer.append('@');
buffer.append(System.identityHashCode(this));
buffer.append('{').append(name).append('}');
return buffer.toString();
}
/**
* Create a deployment unit
*
* @return the deployment unit
*/
protected DeploymentUnit createDeploymentUnit()
{
return new AbstractDeploymentUnit(this);
}
@SuppressWarnings("unchecked")
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
super.readExternal(in);
name = in.readUTF();
simpleName = in.readUTF();
relativePath = in.readUTF();
state = (DeploymentState) in.readObject();
problem = (Throwable) in.readObject();
deployment = (Deployment) in.readObject();
deployed = in.readBoolean();
parent = (DeploymentContext) in.readObject();
deploymentTypes = (Set) in.readObject();
children = (SortedSet) in.readObject();
components = (List) in.readObject();
}
/**
* @serialData name
* @serialData simpleName
* @serialData relativePath
* @serialData state
* @serialData problem
* @serialData deployment
* @serialData deployed
* @serialData parent
* @serialData deploymentTypes
* @serialData children
* @serialData components
* @param out the output
* @throws IOException for any error
*/
public void writeExternal(ObjectOutput out) throws IOException
{
super.writeExternal(out);
out.writeUTF(name);
out.writeUTF(simpleName);
out.writeUTF(relativePath);
out.writeObject(state);
out.writeObject(problem);
out.writeObject(deployment);
out.writeBoolean(deployed);
out.writeObject(parent);
out.writeObject(deploymentTypes);
out.writeObject(children);
out.writeObject(components);
}
}