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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2017 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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 or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jboss.remoting3.spi;

import java.io.Closeable;
import java.io.IOException;
import java.util.Arrays;
import org.jboss.remoting3.Channel;
import org.jboss.remoting3.CloseHandler;
import org.jboss.remoting3.HandleableCloseable;
import org.jboss.remoting3.OpenListener;
import org.xnio.IoUtils;
import org.jboss.logging.Logger;

/**
 * Utility methods for Remoting service providers.
 */
public final class SpiUtils {

    private SpiUtils() {}

    private static final Logger heLog = Logger.getLogger("org.jboss.remoting.handler-errors");

    /**
     * Safely handle a close notification.
     *
     * @param handler the close handler
     * @param closed the object that was closed
     * @param exception the close exception, or {@code null} if the close succeeded
     * @param  the type of the closed resource
     */
    public static  void safeHandleClose(final CloseHandler handler, final T closed, final IOException exception) {
        try {
            if (handler != null && closed != null) handler.handleClose(closed, exception);
        } catch (Throwable t) {
            heLog.error("Close handler threw an exception", t);
        }
    }

    /**
     * A close handler which closes another resource.
     *
     * @param c the resource to close
     * @return the close handler
     */
    public static CloseHandler closingCloseHandler(final Closeable c) {
        return new CloseHandler() {
            public void handleClose(final Object closed, final IOException exception) {
                IoUtils.safeClose(c);
            }
        };
    }

    /**
     * A close handler which closes another resource asynchronously.
     *
     * @param c the resource to close
     * @return the close handler
     */
    public static CloseHandler asyncClosingCloseHandler(final HandleableCloseable c) {
        return new CloseHandler() {
            public void handleClose(final Object closed, final IOException exception) {
                c.closeAsync();
            }
        };
    }

    /**
     * Glue two stack traces together.
     *
     * @param exception the exception which occurred in another thread
     * @param userStackTrace the stack trace of the current thread from {@link Thread#getStackTrace()}
     * @param trimCount the number of frames to trim
     * @param msg the message to use
     */
    public static void glueStackTraces(final Throwable exception, final StackTraceElement[] userStackTrace, final int trimCount, final String msg) {
        final StackTraceElement[] est = exception.getStackTrace();
        final StackTraceElement[] fst = Arrays.copyOf(est, est.length + userStackTrace.length - trimCount + 1);
        fst[est.length] = new StackTraceElement("..." + msg + "..", "", null, -1);
        System.arraycopy(userStackTrace, trimCount, fst, est.length + 1, userStackTrace.length - trimCount);
        exception.setStackTrace(fst);
    }

    /**
     * Get an executor task for opening a service.
     *
     * @param newChannel the new service channel
     * @param listener the service open listener
     * @return the runnable task
     */
    public static Runnable getServiceOpenTask(final Channel newChannel, final OpenListener listener) {
        return new ServiceOpenTask(listener, newChannel);
    }

    static class ServiceOpenTask implements Runnable {

        private final OpenListener listener;
        private final Channel newChannel;

        public ServiceOpenTask(final OpenListener listener, final Channel newChannel) {
            this.listener = listener;
            this.newChannel = newChannel;
        }

        public void run() {
            listener.channelOpened(newChannel);
        }
    }
}
    

    

    

            

    

            



    
    






    
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