public Object gridify()

in modules/aop-ext/src/main/java/org/apache/ignite/compute/gridify/aop/aspectj/GridifyAspectJAspect.java [60:132]
45 lines of code
15 McCabe index (conditional complexity)

    public Object gridify(ProceedingJoinPoint joinPnt) throws Throwable {
        Method mtd = ((MethodSignature)joinPnt.getSignature()).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(), joinPnt.getArgs(), joinPnt.getTarget());

        if (!ann.interceptor().equals(GridifyInterceptor.class)) {
            // Check interceptor first.
            if (!ann.interceptor().newInstance().isGridify(ann, arg))
                return joinPnt.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 task class was specified.
            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(
                    joinPnt.getSignature().getDeclaringType()), arg);
            }

            // If task name was specified.
            return ignite.compute().withTimeout(ann.timeout()).execute(ann.taskName(), arg);
        }
        catch (Exception e) {
            for (Class<?> ex : ((MethodSignature)joinPnt.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);
        }
    }