package org.springframework.orm.hibernate5.support;
import java.util.concurrent.Callable;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate5.SessionFactoryUtils;
import org.springframework.orm.hibernate5.SessionHolder;
import org.springframework.transaction.support.TransactionSynchronizationManager;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.context.request.async.CallableProcessingInterceptor;
import org.springframework.web.context.request.async.DeferredResult;
import org.springframework.web.context.request.async.DeferredResultProcessingInterceptor;
class AsyncRequestInterceptor implements CallableProcessingInterceptor, DeferredResultProcessingInterceptor {
private static final Log logger = LogFactory.getLog(AsyncRequestInterceptor.class);
private final SessionFactory sessionFactory;
private final SessionHolder sessionHolder;
private volatile boolean timeoutInProgress;
private volatile boolean errorInProgress;
public AsyncRequestInterceptor(SessionFactory sessionFactory, SessionHolder sessionHolder) {
this.sessionFactory = sessionFactory;
this.sessionHolder = sessionHolder;
}
@Override
public <T> void preProcess(NativeWebRequest request, Callable<T> task) {
bindSession();
}
public void bindSession() {
this.timeoutInProgress = false;
this.errorInProgress = false;
TransactionSynchronizationManager.bindResource(this.sessionFactory, this.sessionHolder);
}
@Override
public <T> void postProcess(NativeWebRequest request, Callable<T> task, Object concurrentResult) {
TransactionSynchronizationManager.unbindResource(this.sessionFactory);
}
@Override
public <T> Object handleTimeout(NativeWebRequest request, Callable<T> task) {
this.timeoutInProgress = true;
return RESULT_NONE;
}
@Override
public <T> Object handleError(NativeWebRequest request, Callable<T> task, Throwable t) {
this.errorInProgress = true;
return RESULT_NONE;
}
@Override
public <T> void afterCompletion(NativeWebRequest request, Callable<T> task) throws Exception {
closeSession();
}
private void closeSession() {
if (this.timeoutInProgress || this.errorInProgress) {
logger.debug("Closing Hibernate Session after async request timeout/error");
SessionFactoryUtils.closeSession(this.sessionHolder.getSession());
}
}
@Override
public <T> boolean handleTimeout(NativeWebRequest request, DeferredResult<T> deferredResult) {
this.timeoutInProgress = true;
return true;
}
@Override
public <T> boolean handleError(NativeWebRequest request, DeferredResult<T> deferredResult, Throwable t) {
this.errorInProgress = true;
return true;
}
@Override
public <T> void afterCompletion(NativeWebRequest request, DeferredResult<T> deferredResult) {
closeSession();
}
}