patterntesting.exception.net.SocketExceptionAspect.aj Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of patterntesting-exception Show documentation

PatternTesting Exception (patterntesting-exception) is a framework round about exceptions. It wraps some common exception (like IOException) to provide some more information as the original exception (e.g. the filename with the absolute pathname). On the other it allows you to provoke exceptions for better testing.

The newest version!

/*
 * $Id: SocketExceptionAspect.aj,v 1.2 2012/03/09 21:10:15 oboehm Exp $
 *
 * Copyright (c) 2010 by Oliver Boehm
 *
 * Licensed 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 orimplied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * (c)reated 12.05.2010 by oliver ([email protected])
 */

package patterntesting.exception.net;

import java.io.*;
import java.net.*;

import org.aspectj.lang.annotation.SuppressAjWarnings;

/**
 * Sometimes you get a NoRouteToHostException with "No route to host" as the
 * only message. Why does not says the exception which host?
 * So we need this aspect here which will do that for us.
 *
 * @author oliver
 * @since 1.0 (12.05.2010)
 */
public aspect SocketExceptionAspect {

    /**
     * Here we wrap the methods of URLConnection which can throw a
     * SocketException like a NoRouteToHostException.
     *
     * @param connection the wrapped URLConnection
     * @return the same as the called method
     * @throws IOException in case of an error
     */
    @SuppressAjWarnings({"adviceDidNotMatch"})
    Object around(final URLConnection connection) throws IOException :
            call(public * URLConnection+.*(..) throws IOException)
            && target(connection) {
        try {
            return proceed(connection);
        } catch (NoRouteToHostException e) {
            throw SocketExceptionHelper.getBetterNoRouteToHostException(e, connection);
        } catch (SocketException e) {
            throw SocketExceptionHelper.getBetterSocketException(e, connection);
        }
    }

    /**
     * If a socket is created you may get a ConnectException with
     * "connection refused". What you don't see is the host and the port
     * in the exception. So this is now provided by this advice.
     */
    @SuppressAjWarnings({"adviceDidNotMatch"})
    Socket around(final String host, final int port) throws IOException :
            call(public Socket.new(String, int, ..) throws IOException)
            && args(host, port) {
        try {
            return proceed(host, port);
        } catch (ConnectException ce) {
            throw SocketExceptionHelper.getBetterConnectException(ce, host, port);
        } catch (NoRouteToHostException ex) {
            throw SocketExceptionHelper.getBetterNoRouteToHostException(ex, host, port);
        } catch (SocketException ex) {
            throw DetailedSocketException.of(ex, host, port);
        }
    }

}