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TransactionImportManager.java
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TransactionImportManager.java
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/*
* Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.tx.at.common;
import com.sun.istack.logging.Logger;
import com.sun.xml.ws.tx.at.localization.LocalizationMessages;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import jakarta.resource.spi.XATerminator;
import jakarta.transaction.TransactionManager;
import javax.transaction.xa.XAResource;
import javax.transaction.xa.Xid;
/**
* Access Transaction Inflow Contract from Java Connector 1.5 API.
* Assumption is the underlying TransactionManager is implementing this
* interface.
*
* Separate this from TransactionManagerImpl since this provides mostly service side assistance.
* Assists in supporting application client and standalone client to separate from more commonly
* used methods in TransactionManagerImpl.
*/
public class TransactionImportManager implements TransactionImportWrapper {
private static final class MethodInfo<T> {
final String methodName;
final Class<?>[] parameterTypes;
final Class<?> returnType;
final Class<T> returnTypeCaster;
//
Method method;
public MethodInfo(String methodName, Class<?>[] parameterTypes, Class<T> returnType) {
this(methodName, parameterTypes, returnType, returnType);
}
public MethodInfo(String methodName, Class<?>[] parameterTypes, Class<?> returnType, Class<T> returnTypeCaster) {
this.methodName = methodName;
this.parameterTypes = parameterTypes;
this.returnType = returnType;
this.returnTypeCaster = returnTypeCaster;
}
public boolean isCompatibleWith(Method m) {
if (!methodName.equals(m.getName())) {
return false;
}
if (!Modifier.isPublic(m.getModifiers())) {
return false;
}
if (!returnType.isAssignableFrom(m.getReturnType())) {
return false;
}
Class<?>[] otherParamTypes = m.getParameterTypes();
if (parameterTypes.length != otherParamTypes.length) {
return false;
}
for (int i = 0; i < parameterTypes.length; i++) {
if (!parameterTypes[i].isAssignableFrom(otherParamTypes[i])) {
return false;
}
}
return true;
}
public T invoke(TransactionManager tmInstance, Object... args) {
try {
Object result = method.invoke(tmInstance, args);
return returnTypeCaster.cast(result);
} catch (IllegalAccessException | InvocationTargetException | IllegalArgumentException ex) {
throw new RuntimeException(ex);
}
}
}
private static final Logger LOGGER = Logger.getLogger(TransactionImportManager.class);
private static TransactionImportManager INSTANCE;
public static TransactionImportManager getInstance() {
if(INSTANCE==null) INSTANCE = new TransactionImportManager();
return INSTANCE;
}
//
static private TransactionManager javaeeTM;
private final MethodInfo<?> recreate;
private final MethodInfo<?> release;
private final MethodInfo<XATerminator> getXATerminator;
private final MethodInfo<Integer> getTransactionRemainingTimeout;
private final MethodInfo<String> getTxLogLocation;
static private MethodInfo<?> registerRecoveryResourceHandler;
private TransactionImportManager() {
this(TransactionManagerImpl.getInstance().getTransactionManager());
}
private TransactionImportManager(TransactionManager tm) {
javaeeTM = tm;
this.recreate = new MethodInfo<>(
"recreate",
new Class<?>[]{Xid.class, long.class},
void.class);
this.release = new MethodInfo<>(
"release",
new Class<?>[]{Xid.class},
void.class);
this.getXATerminator = new MethodInfo<>(
"getXATerminator",
new Class<?>[]{},
XATerminator.class);
this.getTransactionRemainingTimeout = new MethodInfo<>(
"getTransactionRemainingTimeout",
new Class<?>[]{},
int.class,
Integer.class);
this.getTxLogLocation = new MethodInfo<>(
"getTxLogLocation",
new Class<?>[]{},
String.class);
registerRecoveryResourceHandler = new MethodInfo<>(
"registerRecoveryResourceHandler",
new Class<?>[]{XAResource.class},
void.class);
MethodInfo<?>[] requiredMethods = new MethodInfo<?>[]{
recreate,
release,
getXATerminator,
getTransactionRemainingTimeout,
getTxLogLocation,
registerRecoveryResourceHandler
};
int remainingMethodsToFind = requiredMethods.length;
if (javaeeTM != null) {
for (Method m : javaeeTM.getClass().getDeclaredMethods()) {
for (MethodInfo mi : requiredMethods) {
if (mi.isCompatibleWith(m)) {
mi.method = m;
remainingMethodsToFind--;
}
}
if (remainingMethodsToFind == 0) {
break;
}
}
}
if (remainingMethodsToFind != 0) {
StringBuilder sb =
new StringBuilder("Missing required extension methods detected on '" + TransactionManager.class.getName() + "' implementation '" + javaeeTM.getClass().getName() + "':\n");
for (MethodInfo mi : requiredMethods) {
if (mi.method == null) {
sb.append(mi.methodName).append("\n");
}
}
LOGGER.info(sb.toString());
}
}
/**
* ${@inheritDoc }
*/
@Override
public void recreate(final Xid xid, final long timeout) {
recreate.invoke(javaeeTM, xid, timeout);
}
/**
* ${@inheritDoc }
*/
@Override
public void release(final Xid xid) {
release.invoke(javaeeTM, xid);
}
/**
* ${@inheritDoc }
*/
@Override
public XATerminator getXATerminator() {
return getXATerminator.invoke(javaeeTM);
}
/**
* ${@inheritDoc }
*/
@Override
public int getTransactionRemainingTimeout() {
final String METHOD = "getTransactionRemainingTimeout";
int result = 0;
try {
result = getTransactionRemainingTimeout.invoke(javaeeTM);
} catch (IllegalStateException ise) {
LOGGER.finest(METHOD + " " + LocalizationMessages.WSAT_4617_TXN_MGR_LOOKUP_TXN_TIMEOUT(), ise);
}
return result;
}
public String getTxLogLocation() {
return getTxLogLocation.invoke(javaeeTM);
}
public static void registerRecoveryResourceHandler(XAResource xaResource) {
registerRecoveryResourceHandler.invoke(javaeeTM, xaResource);
}
}