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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.threads;

import java.util.regex.Pattern;
import java.util.regex.Matcher;

/**
 * Thread name information.
 */
final class ThreadNameInfo {
    private final long globalThreadSequenceNum;
    private final long perFactoryThreadSequenceNum;
    private final long factorySequenceNum;

    ThreadNameInfo(final long globalThreadSequenceNum, final long perFactoryThreadSequenceNum, final long factorySequenceNum) {
        this.globalThreadSequenceNum = globalThreadSequenceNum;
        this.perFactoryThreadSequenceNum = perFactoryThreadSequenceNum;
        this.factorySequenceNum = factorySequenceNum;
    }

    public long getGlobalThreadSequenceNum() {
        return globalThreadSequenceNum;
    }

    public long getPerFactoryThreadSequenceNum() {
        return perFactoryThreadSequenceNum;
    }

    public long getFactorySequenceNum() {
        return factorySequenceNum;
    }

    private static final Pattern searchPattern = Pattern.compile("([^%]+)|%.");

    /**
     * Format the thread name string.
     * 
     * {@code %%} - emit a percent sign
     * {@code %t} - emit the per-factory thread sequence number
     * {@code %g} - emit the global thread sequence number
     * {@code %f} - emit the factory sequence number
     * {@code %p} - emit the {@code ":"}-separated thread group path
     * {@code %i} - emit the thread ID
     * {@code %G} - emit the thread group name
     * 
     *
     * @param thread the thread
     * @param formatString the format string
     * @return the thread name string
     */
    public String format(Thread thread, String formatString) {
        final StringBuilder builder = new StringBuilder(formatString.length() * 5);
        final ThreadGroup group = thread.getThreadGroup();
        final Matcher matcher = searchPattern.matcher(formatString);
        while (matcher.find()) {
            if (matcher.group(1) != null) {
                builder.append(matcher.group());
            } else {
                switch (matcher.group().charAt(1)) {
                    case '%': builder.append('%'); break;
                    case 't': builder.append(perFactoryThreadSequenceNum); break;
                    case 'g': builder.append(globalThreadSequenceNum); break;
                    case 'f': builder.append(factorySequenceNum); break;
                    case 'p': if (group != null) appendGroupPath(group, builder); break;
                    case 'i': builder.append(thread.getId()); break;
                    case 'G': if (group != null) builder.append(group.getName()); break;
                }
            }
        }
        return builder.toString();
    }

    private static void appendGroupPath(ThreadGroup group, StringBuilder builder) {
        final ThreadGroup parent = group.getParent();
        if (parent != null) {
            appendGroupPath(parent, builder);
            builder.append(':');
        }
        builder.append(group.getName());
    }
}