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package org.glassfish.concurrent.runtime;
import com.sun.enterprise.config.serverbeans.Application;
import com.sun.enterprise.config.serverbeans.Applications;
import com.sun.enterprise.security.integration.AppServSecurityContext;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import com.sun.enterprise.util.Utility;
import org.glassfish.api.invocation.ComponentInvocation;
import org.glassfish.api.invocation.InvocationManager;
import org.glassfish.enterprise.concurrent.spi.ContextHandle;
import org.glassfish.enterprise.concurrent.spi.ContextSetupProvider;
import org.glassfish.internal.deployment.Deployment;
import javax.enterprise.concurrent.ContextService;
import javax.transaction.*;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
public class ContextSetupProviderImpl implements ContextSetupProvider {
private transient AppServSecurityContext securityContext;
private transient InvocationManager invocationManager;
private transient Deployment deployment;
private transient Applications applications;
private transient JavaEETransactionManager transactionManager;
static final long serialVersionUID = 1L;
static enum CONTEXT_TYPE {CLASSLOADING, SECURITY, NAMING, WORKAREA}
private boolean classloading, security, naming, workArea;
public ContextSetupProviderImpl(InvocationManager invocationManager,
AppServSecurityContext securityContext,
Deployment deployment,
Applications applications,
JavaEETransactionManager transactionManager,
CONTEXT_TYPE... contextTypes) {
this.invocationManager = invocationManager;
this.securityContext = securityContext;
this.deployment = deployment;
this.applications = applications;
this.transactionManager = transactionManager;
for (CONTEXT_TYPE contextType: contextTypes) {
switch(contextType) {
case CLASSLOADING:
classloading = true;
break;
case SECURITY:
security = true;
break;
case NAMING:
naming = true;
break;
case WORKAREA:;
workArea = true;
break;
}
}
}
@Override
public ContextHandle saveContext(ContextService contextService) {
return saveContext(contextService, null);
}
@Override
public ContextHandle saveContext(ContextService contextService, Map<String, String> contextObjectProperties) {
// Capture the current thread context
ClassLoader contextClassloader = null;
AppServSecurityContext currentSecurityContext = null;
ComponentInvocation savedInvocation = null;
if (classloading) {
contextClassloader = Utility.getClassLoader();
}
if (security) {
currentSecurityContext = securityContext.getCurrentSecurityContext();
}
ComponentInvocation currentInvocation = invocationManager.getCurrentInvocation();
if (currentInvocation != null) {
savedInvocation = currentInvocation.clone();
savedInvocation.instance = currentInvocation.instance;
savedInvocation.setResourceTableKey(null);
if (!naming) {
savedInvocation.setJNDIEnvironment(null);
}
}
// TODO - support workarea propagation
return new InvocationContext(savedInvocation, contextClassloader, currentSecurityContext);
}
@Override
public ContextHandle setup(ContextHandle contextHandle) throws IllegalStateException {
if (! (contextHandle instanceof InvocationContext)) {
// TODO: log a warning message saying that we got passed an unknown ContextHandle
return null;
}
InvocationContext handle = (InvocationContext) contextHandle;
String appName = null;
if (handle.getInvocation() != null) {
appName = handle.getInvocation().getAppName();
}
// Check whether the application component submitting the task is still running. Throw IllegalStateException if not.
if (!isApplicationEnabled(appName)) {
throw new IllegalStateException("Module " + appName + " is disabled");
}
ClassLoader resetClassLoader = null;
AppServSecurityContext resetSecurityContext = null;
if (handle.getContextClassLoader() != null) {
resetClassLoader = Utility.setContextClassLoader(handle.getContextClassLoader());
}
if (handle.getSecurityContext() != null) {
resetSecurityContext = securityContext.getCurrentSecurityContext();
securityContext.setCurrentSecurityContext(handle.getSecurityContext());
}
if (handle.getInvocation() != null) {
ComponentInvocation invocation = handle.getInvocation();
// Each invocation needs a ResourceTableKey that returns a unique hashCode for TransactionManager
invocation.setResourceTableKey(new PairKey(invocation.getInstance(), Thread.currentThread()));
invocationManager.preInvoke(invocation);
}
// Ensure that there is no existing transaction in the current thread
if (transactionManager != null) {
transactionManager.clearThreadTx();
}
return new InvocationContext(handle.getInvocation(), resetClassLoader, resetSecurityContext);
}
@Override
public void reset(ContextHandle contextHandle) {
if (! (contextHandle instanceof InvocationContext)) {
// TODO: log a warning message saying that we got passed an unknown ContextHandle
return;
}
InvocationContext handle = (InvocationContext) contextHandle;
if (handle.getContextClassLoader() != null) {
Utility.setContextClassLoader(handle.getContextClassLoader());
}
if (handle.getSecurityContext() != null) {
securityContext.setCurrentSecurityContext(handle.getSecurityContext());
}
if (handle.getInvocation() != null) {
invocationManager.postInvoke(((InvocationContext)contextHandle).getInvocation());
}
if (transactionManager != null) {
// clean up after user if a transaction is still active
// This is not required by the Concurrency spec
Transaction transaction = transactionManager.getCurrentTransaction();
if (transaction != null) {
try {
int status = transaction.getStatus();
if (status == Status.STATUS_ACTIVE) {
transactionManager.commit();
} else if (status == Status.STATUS_MARKED_ROLLBACK) {
transactionManager.rollback();
}
} catch (Exception ex) {
Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, ex.toString());
}
}
transactionManager.clearThreadTx();
}
}
private boolean isApplicationEnabled(String appId) {
if (appId != null) {
Application app = applications.getApplication(appId);
if (app != null)
return deployment.isAppEnabled(app);
}
return false;
}
private void readObject(java.io.ObjectInputStream in) {
//TODO- re-initialize these fields
securityContext = null;
invocationManager = null;
deployment = null;
applications = null;
transactionManager = null;
}
private static class PairKey {
private Object instance = null;
private Thread thread = null;
int hCode = 0;
private PairKey(Object inst, Thread thr) {
instance = inst;
thread = thr;
if (inst != null) {
hCode = 7 * inst.hashCode();
}
if (thr != null) {
hCode += thr.hashCode();
}
}
@Override
public int hashCode() {
return hCode;
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
boolean eq = false;
if (obj != null && obj instanceof PairKey) {
PairKey p = (PairKey)obj;
if (instance != null) {
eq = (instance.equals(p.instance));
} else {
eq = (p.instance == null);
}
if (eq) {
if (thread != null) {
eq = (thread.equals(p.thread));
} else {
eq = (p.thread == null);
}
}
}
return eq;
}
}
}