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src/main/java/net/doubledoordev/backend/util/CustomLogAppender.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| /* | ||
| * Unless otherwise specified through the '@author' tag or comments at | ||
| * the top of the file or on a specific portion of the code the following license applies: | ||
| * | ||
| * Copyright (c) 2014, DoubleDoorDevelopment | ||
| * All rights reserved. | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are met: | ||
| * | ||
| * Redistributions of source code must retain the above copyright notice, this | ||
| * list of conditions and the following disclaimer. | ||
| * | ||
| * Redistributions in binary form must reproduce the above copyright notice, | ||
| * this list of conditions and the following disclaimer in the documentation | ||
| * and/or other materials provided with the distribution. | ||
| * | ||
| * The header specified or the above copyright notice, this list of conditions | ||
| * and the following disclaimer below must be displayed at the top of the source code | ||
| * of any web page received while using any part of the service this software provides. | ||
| * | ||
| * The header to be displayed: | ||
| * This page was generated by DoubleDoorDevelopment's D3Backend or a derivative thereof. | ||
| * | ||
| * Neither the name of the project nor the names of its | ||
| * contributors may be used to endorse or promote products derived from | ||
| * this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE | ||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, | ||
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
|
|
||
| package net.doubledoordev.backend.util; | ||
|
|
||
| import com.google.gson.JsonObject; | ||
| import org.apache.logging.log4j.core.Filter; | ||
| import org.apache.logging.log4j.core.Layout; | ||
| import org.apache.logging.log4j.core.LogEvent; | ||
| import org.apache.logging.log4j.core.appender.AbstractAppender; | ||
| import org.apache.logging.log4j.core.config.plugins.Plugin; | ||
| import org.apache.logging.log4j.core.config.plugins.PluginAttribute; | ||
| import org.apache.logging.log4j.core.config.plugins.PluginElement; | ||
| import org.apache.logging.log4j.core.config.plugins.PluginFactory; | ||
| import org.apache.logging.log4j.core.layout.PatternLayout; | ||
|
|
||
| import java.io.Serializable; | ||
| import java.util.ArrayList; | ||
|
|
||
| /** | ||
| * @author Dries007 | ||
| */ | ||
| @Plugin(name = "CustomLogAppender", category = "Core", elementType = "appender", printObject = true) | ||
| public class CustomLogAppender extends AbstractAppender | ||
| { | ||
| public static int LOG_LINES_KEPT = 1000; | ||
| private static final ArrayList<String> LOG = new ArrayList<>(LOG_LINES_KEPT + 10); | ||
|
|
||
| protected CustomLogAppender(String name, Filter filter, Layout<? extends Serializable> layout) | ||
| { | ||
| super(name, filter, layout); | ||
| } | ||
|
|
||
| protected CustomLogAppender(String name, Filter filter, Layout<? extends Serializable> layout, boolean ignoreExceptions) | ||
| { | ||
| super(name, filter, layout, ignoreExceptions); | ||
| } | ||
|
|
||
| @PluginFactory | ||
| public static CustomLogAppender createAppender(@PluginAttribute("name") String name, @PluginAttribute("ignoreExceptions") boolean ignoreExceptions, @PluginElement("Layout") Layout layout, @PluginElement("Filters") Filter filter) | ||
| { | ||
| if (name == null) | ||
| { | ||
| LOGGER.error("No name provided for StubAppender"); | ||
| return null; | ||
| } | ||
|
|
||
| if (layout == null) | ||
| { | ||
| layout = PatternLayout.createDefaultLayout(); | ||
| } | ||
| //noinspection unchecked | ||
| return new CustomLogAppender(name, filter, layout, ignoreExceptions); | ||
| } | ||
|
|
||
| public static String getLogLinesAfter(int index) | ||
| { | ||
| JsonObject responce = new JsonObject(); | ||
| StringBuilder stringBuilder = new StringBuilder(); | ||
| synchronized (LOG) | ||
| { | ||
| responce.addProperty("size", LOG.size()); | ||
| if (index < LOG.size()) for (String line : LOG.subList(index, LOG.size())) stringBuilder.append(line); | ||
| } | ||
| responce.addProperty("text", stringBuilder.toString()); | ||
| return responce.toString(); | ||
| } | ||
|
|
||
| @Override | ||
| public void append(LogEvent event) | ||
| { | ||
| LOG.add(new String(getLayout().toByteArray(event))); | ||
| while (LOG.size() > LOG_LINES_KEPT) LOG.remove(0); | ||
| } | ||
| } |
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