org.gridgain.grid.gridify.aop.aspectj.GridifySetToValueAspectJAspect.java Source code

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Here is the source code for org.gridgain.grid.gridify.aop.aspectj.GridifySetToValueAspectJAspect.java

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// Copyright (C) GridGain Systems Licensed under GPLv3, http://www.gnu.org/licenses/gpl.html

/*  _________        _____ __________________        _____
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 *  / /_/ /  _  /    _  /  / /_/ /  / /_/ /  / /_/ / _  /  _  / / /
 *  \____/   /_/     /_/   \_,__/   \____/   \__,_/  /_/   /_/ /_/
 */

package org.gridgain.grid.gridify.aop.aspectj;

import org.aspectj.lang.*;
import org.aspectj.lang.annotation.*;
import org.aspectj.lang.reflect.*;
import org.gridgain.grid.*;
import org.gridgain.grid.gridify.*;
import org.gridgain.grid.gridify.aop.*;
import org.gridgain.grid.typedef.*;
import org.gridgain.grid.util.gridify.*;
import java.lang.reflect.*;

import static org.gridgain.grid.GridFactoryState.*;
import static org.gridgain.grid.util.gridify.GridifyUtils.*;

/**
 * AspectJ aspect that cross-cuts on all methods grid-enabled with
 * {@link GridifySetToValue} annotation and potentially executes them on
 * remote node.
 * <p>
 * See {@link GridifySetToValue} documentation for more information about execution of
 * {@code gridified} methods.
 *
 * @author 2012 Copyright (C) GridGain Systems
 * @version 4.0.0c.22032012
 * @see GridifySetToValue
 */
@Aspect
public class GridifySetToValueAspectJAspect extends GridifySetToValueAbstractAspect {
    /**
     * Aspect implementation which executes grid-enabled methods on remote
     * nodes.
     *
     * @param joinPoint Join point provided by AspectJ AOP.
     * @return Method execution result.
     * @throws Throwable If execution failed.
     */
    @SuppressWarnings({ "ProhibitedExceptionDeclared", "ProhibitedExceptionThrown", "CatchGenericClass" })
    @Around("execution(@org.gridgain.grid.gridify.GridifySetToValue * *(..)) && !cflow(call(* org.gridgain.grid.GridJob.*(..)))")
    public Object gridify(ProceedingJoinPoint joinPoint) throws Throwable {
        Method mtd = ((MethodSignature) joinPoint.getSignature()).getMethod();

        GridifySetToValue ann = mtd.getAnnotation(GridifySetToValue.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 grid name.
        // NOTE: the 'ann.gridName() == null' check is added to mitigate
        // annotation bugs in some scripting languages (e.g. Groovy).
        String gridName = F.isEmpty(ann.gridName()) ? null : ann.gridName();

        if (G.state(gridName) != STARTED)
            throw new GridException("Grid is not locally started: " + gridName);

        GridifyNodeFilter nodeFilter = null;

        if (!ann.nodeFilter().equals(GridifyNodeFilter.class))
            nodeFilter = ann.nodeFilter().newInstance();

        // Check is method allowed for gridify.
        checkMethodSignature(mtd);

        GridifyArgumentBuilder argBuilder = new GridifyArgumentBuilder();

        // Creates task argument.
        GridifyRangeArgument arg = argBuilder.createTaskArgument(mtd.getDeclaringClass(), mtd.getName(),
                mtd.getReturnType(), mtd.getParameterTypes(), mtd.getParameterAnnotations(), joinPoint.getArgs(),
                joinPoint.getTarget());

        if (!ann.interceptor().equals(GridifyInterceptor.class)) {
            // Check interceptor first.
            if (!ann.interceptor().newInstance().isGridify(ann, arg)) {
                return joinPoint.proceed();
            }
        }

        // Proceed locally for negative threshold parameter.
        if (ann.threshold() < 0)
            return joinPoint.proceed();

        // Analyse where to execute method (remotely or locally).
        if (arg.getInputSize() != UNKNOWN_SIZE && arg.getInputSize() <= ann.threshold())
            return joinPoint.proceed();

        // Check is split to jobs allowed for input method argument with declared splitSize.
        checkIsSplitToJobsAllowed(arg, ann);

        try {
            Grid grid = G.grid(gridName);

            return execute(mtd, grid, joinPoint.getSignature().getDeclaringType(), arg, nodeFilter, ann.threshold(),
                    ann.splitSize(), ann.timeout());
        } catch (Throwable e) {
            for (Class<?> ex : ((MethodSignature) joinPoint.getSignature()).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);
        }
    }
}