org.smallmind.scribe.pen.adapter.LoggingBlueprintsFactory Maven / Gradle / Ivy
/*
* Copyright (c) 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 David Berkman
*
* This file is part of the SmallMind Code Project.
*
* The SmallMind Code Project is free software, you can redistribute
* it and/or modify it under either, at your discretion...
*
* 1) The terms of GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* ...or...
*
* 2) The terms of the Apache License, Version 2.0.
*
* The SmallMind Code Project is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License or Apache License for more details.
*
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* and the Apache License along with the SmallMind Code Project. If not, see
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*
* Additional permission under the GNU Affero GPL version 3 section 7
* ------------------------------------------------------------------
* If you modify this Program, or any covered work, by linking or
* combining it with other code, such other code is not for that reason
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package org.smallmind.scribe.pen.adapter;
import java.util.Arrays;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.ServiceLoader;
import org.smallmind.nutsnbolts.lang.StaticInitializationError;
public class LoggingBlueprintsFactory {
private static LoggingBlueprints LOGGING_BLUEPRINTS;
static {
Iterator blueprintsIter;
blueprintsIter = ServiceLoader.load(LoggingBlueprints.class, Thread.currentThread().getContextClassLoader()).iterator();
if (!blueprintsIter.hasNext()) {
throw new StaticInitializationError("No provider found for LoggingBlueprints");
}
LOGGING_BLUEPRINTS = blueprintsIter.next();
if (blueprintsIter.hasNext()) {
LinkedList implementationList = new LinkedList();
while (blueprintsIter.hasNext()) {
implementationList.add(blueprintsIter.next().getClass().getName());
}
String[] implementations = new String[implementationList.size()];
implementationList.toArray(implementations);
throw new StaticInitializationError("Found conflicting service implementations(%s) %s", LoggingBlueprints.class.getSimpleName(), Arrays.toString(implementations));
}
}
public static LoggingBlueprints getLoggingBlueprints () {
return LOGGING_BLUEPRINTS;
}
}
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