/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.ignite.compute.gridify.aop.spring;
import java.lang.reflect.Method;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCheckedException;
import org.apache.ignite.compute.ComputeTask;
import org.apache.ignite.compute.gridify.Gridify;
import org.apache.ignite.compute.gridify.GridifyArgument;
import org.apache.ignite.compute.gridify.GridifyInterceptor;
import org.apache.ignite.compute.gridify.GridifyRuntimeException;
import org.apache.ignite.compute.gridify.aop.GridifyArgumentAdapter;
import org.apache.ignite.compute.gridify.aop.GridifyDefaultTask;
import org.apache.ignite.internal.util.typedef.F;
import org.apache.ignite.internal.util.typedef.G;
import static org.apache.ignite.IgniteState.STARTED;
/**
* Spring aspect that cross-cuts on all methods grid-enabled with
* {@link org.apache.ignite.compute.gridify.Gridify} annotation and potentially executes them on
* remote node.
* <p>
* Note that Spring uses proxy-based AOP, so in order to be properly
* cross-cut, all methods need to be enhanced with {@link GridifySpringEnhancer}
* helper.
* <p>
* See {@link org.apache.ignite.compute.gridify.Gridify} documentation for more information about execution of
* {@code gridified} methods.
* @see org.apache.ignite.compute.gridify.Gridify
*/
public class GridifySpringAspect implements MethodInterceptor {
/**
* Aspect implementation which executes grid-enabled methods on remote
* nodes.
*
* {@inheritDoc}
*/
@SuppressWarnings({"ProhibitedExceptionDeclared", "ProhibitedExceptionThrown", "CatchGenericClass", "unchecked"})
@Override public Object invoke(MethodInvocation invoc) throws Throwable {
Method mtd = invoc.getMethod();
Gridify ann = mtd.getAnnotation(Gridify.class);
assert ann != null : "Intercepted method does not have gridify annotation.";
// Since annotations in Java don't allow 'null' as default value
// we have accept an empty string and convert it here.
// NOTE: there's unintended behavior when user specifies an empty
// string as intended Ignite instance name.
// NOTE: the 'ann.igniteInstanceName() == null' check is added to mitigate
// annotation bugs in some scripting languages (e.g. Groovy).
String igniteInstanceName = F.isEmpty(ann.igniteInstanceName()) ? ann.gridName() : ann.igniteInstanceName();
if (F.isEmpty(igniteInstanceName))
igniteInstanceName = null;
if (G.state(igniteInstanceName) != STARTED)
throw new IgniteCheckedException("Grid is not locally started: " + igniteInstanceName);
// Initialize defaults.
GridifyArgument arg = new GridifyArgumentAdapter(mtd.getDeclaringClass(), mtd.getName(),
mtd.getParameterTypes(), invoc.getArguments(), invoc.getThis());
if (!ann.interceptor().equals(GridifyInterceptor.class)) {
// Check interceptor first.
if (!ann.interceptor().newInstance().isGridify(ann, arg))
return invoc.proceed();
}
if (!ann.taskClass().equals(GridifyDefaultTask.class) && !ann.taskName().isEmpty())
throw new IgniteCheckedException("Gridify annotation must specify either Gridify.taskName() or " +
"Gridify.taskClass(), but not both: " + ann);
try {
Ignite ignite = G.ignite(igniteInstanceName);
if (!ann.taskClass().equals(GridifyDefaultTask.class))
return ignite.compute().withTimeout(ann.timeout()).execute(
(Class<? extends ComputeTask<GridifyArgument, Object>>)ann.taskClass(), arg);
// If task name was not specified.
if (ann.taskName().isEmpty())
return ignite.compute().withTimeout(ann.timeout()).execute(
new GridifyDefaultTask(invoc.getMethod().getDeclaringClass()), arg);
// If task name was specified.
return ignite.compute().withTimeout(ann.timeout()).execute(ann.taskName(), arg);
}
catch (Exception e) {
for (Class<?> ex : invoc.getMethod().getExceptionTypes()) {
// Descend all levels down.
Throwable cause = e.getCause();
while (cause != null) {
if (ex.isAssignableFrom(cause.getClass()))
throw cause;
cause = cause.getCause();
}
if (ex.isAssignableFrom(e.getClass()))
throw e;
}
throw new GridifyRuntimeException("Undeclared exception thrown: " + e.getMessage(), e);
}
}
}