/*
 * Copyright (c) 2011, 2017 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.grizzly.utils;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Map;

Exceptions utilities.
Author:
Alexey Stashok/**
 * Exceptions utilities.
 *
 * @author Alexey Stashok
 */
public class Exceptions {

    
Returns the Throwable's stack trace information as String. The result String format will be the same as reported by Throwable.printStackTrace(). 
Params:
t – Throwable.
Returns:
the Throwable's stack trace information as String./**
     * Returns the {@link Throwable}'s stack trace information as {@link String}.
     * The result {@link String} format will be the same as reported by {@link Throwable#printStackTrace()}.
     *
     * @param t {@link Throwable}.
     * @return the {@link Throwable}'s stack trace information as {@link String}.
     */
    public static String getStackTraceAsString(final Throwable t) {
        final StringWriter stringWriter = new StringWriter(2048);
        final PrintWriter pw = new PrintWriter(stringWriter);
        t.printStackTrace(pw);

        pw.close();
        return stringWriter.toString();
    }

    
Wrap the given Throwable by IOException. 
Params:
t – Throwable.
Returns:
IOException./**
     * Wrap the given {@link Throwable} by {@link IOException}.
     *
     * @param t {@link Throwable}.
     * @return {@link IOException}.
     */
    public static IOException makeIOException(final Throwable t) {
        if (IOException.class.isAssignableFrom(t.getClass())) {
            return (IOException) t;
        }

        return new IOException(t);
    }
    
    
See Also:
Thread.getAllStackTraces()
Returns:
String representation of all the JVM threads/**
     * @return {@link String} representation of all the JVM threads
     * 
     * @see Thread#getAllStackTraces()
     */
    public static String getAllStackTracesAsString() {
        final StringBuilder sb = new StringBuilder(256);
        
        final Map<Thread, StackTraceElement[]> all = Thread.getAllStackTraces();
        
        for (Map.Entry<Thread, StackTraceElement[]> entry : all.entrySet()) {
            sb.append(entry.getKey()).append('\n');
            
            for (StackTraceElement traceElement : entry.getValue()) {
                sb.append("\tat ").append(traceElement).append('\n');                
            }
            
        }
        
        return sb.toString();
    }
}