| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.logging.log4j.core.filter; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.logging.log4j.Level; |
| import org.apache.logging.log4j.Marker; |
| import org.apache.logging.log4j.core.ContextDataInjector; |
| import org.apache.logging.log4j.core.Filter; |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.core.Logger; |
| import org.apache.logging.log4j.plugins.Node; |
| import org.apache.logging.log4j.plugins.Plugin; |
| import org.apache.logging.log4j.plugins.PluginAliases; |
| import org.apache.logging.log4j.plugins.PluginAttribute; |
| import org.apache.logging.log4j.plugins.PluginElement; |
| import org.apache.logging.log4j.plugins.PluginFactory; |
| import org.apache.logging.log4j.core.impl.ContextDataInjectorFactory; |
| import org.apache.logging.log4j.core.util.KeyValuePair; |
| import org.apache.logging.log4j.message.Message; |
| import org.apache.logging.log4j.util.IndexedReadOnlyStringMap; |
| import org.apache.logging.log4j.util.PerformanceSensitive; |
| import org.apache.logging.log4j.util.ReadOnlyStringMap; |
| |
| /** |
| * Filter based on a value in the Thread Context Map (MDC). |
| */ |
| @Plugin(name = "ThreadContextMapFilter", category = Node.CATEGORY, elementType = Filter.ELEMENT_TYPE, printObject = true) |
| @PluginAliases("ContextMapFilter") |
| @PerformanceSensitive("allocation") |
| public class ThreadContextMapFilter extends MapFilter { |
| |
| private final ContextDataInjector injector = ContextDataInjectorFactory.createInjector(); |
| private final String key; |
| private final String value; |
| |
| private final boolean useMap; |
| |
| public ThreadContextMapFilter(final Map<String, List<String>> pairs, final boolean oper, final Result onMatch, |
| final Result onMismatch) { |
| super(pairs, oper, onMatch, onMismatch); |
| if (pairs.size() == 1) { |
| final Iterator<Map.Entry<String, List<String>>> iter = pairs.entrySet().iterator(); |
| final Map.Entry<String, List<String>> entry = iter.next(); |
| if (entry.getValue().size() == 1) { |
| this.key = entry.getKey(); |
| this.value = entry.getValue().get(0); |
| this.useMap = false; |
| } else { |
| this.key = null; |
| this.value = null; |
| this.useMap = true; |
| } |
| } else { |
| this.key = null; |
| this.value = null; |
| this.useMap = true; |
| } |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object... params) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final Object msg, |
| final Throwable t) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final Message msg, |
| final Throwable t) { |
| return filter(); |
| } |
| |
| private Result filter() { |
| boolean match = false; |
| if (useMap) { |
| ReadOnlyStringMap currentContextData = null; |
| final IndexedReadOnlyStringMap map = getStringMap(); |
| for (int i = 0; i < map.size(); i++) { |
| if (currentContextData == null) { |
| currentContextData = currentContextData(); |
| } |
| final String toMatch = currentContextData.getValue(map.getKeyAt(i)); |
| match = toMatch != null && ((List<String>) map.getValueAt(i)).contains(toMatch); |
| if ((!isAnd() && match) || (isAnd() && !match)) { |
| break; |
| } |
| } |
| } else { |
| match = value.equals(currentContextData().getValue(key)); |
| } |
| return match ? onMatch : onMismatch; |
| } |
| |
| private ReadOnlyStringMap currentContextData() { |
| return injector.rawContextData(); |
| } |
| |
| @Override |
| public Result filter(final LogEvent event) { |
| return super.filter(event.getContextData()) ? onMatch : onMismatch; |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2, final Object p3) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2, final Object p3, |
| final Object p4) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2, final Object p3, |
| final Object p4, final Object p5) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2, final Object p3, |
| final Object p4, final Object p5, final Object p6) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2, final Object p3, |
| final Object p4, final Object p5, final Object p6, |
| final Object p7) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2, final Object p3, |
| final Object p4, final Object p5, final Object p6, |
| final Object p7, final Object p8) { |
| return filter(); |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final String msg, |
| final Object p0, final Object p1, final Object p2, final Object p3, |
| final Object p4, final Object p5, final Object p6, |
| final Object p7, final Object p8, final Object p9) { |
| return filter(); |
| } |
| |
| // TODO Consider refactoring to use AbstractFilter.AbstractFilterBuilder |
| @PluginFactory |
| public static ThreadContextMapFilter createFilter( |
| @PluginElement final KeyValuePair[] pairs, |
| @PluginAttribute final String operator, |
| @PluginAttribute final Result onMatch, |
| @PluginAttribute final Result onMismatch) { |
| if (pairs == null || pairs.length == 0) { |
| LOGGER.error("key and value pairs must be specified for the ThreadContextMapFilter"); |
| return null; |
| } |
| final Map<String, List<String>> map = new HashMap<>(); |
| for (final KeyValuePair pair : pairs) { |
| final String key = pair.getKey(); |
| if (key == null) { |
| LOGGER.error("A null key is not valid in MapFilter"); |
| continue; |
| } |
| final String value = pair.getValue(); |
| if (value == null) { |
| LOGGER.error("A null value for key " + key + " is not allowed in MapFilter"); |
| continue; |
| } |
| List<String> list = map.get(pair.getKey()); |
| if (list != null) { |
| list.add(value); |
| } else { |
| list = new ArrayList<>(); |
| list.add(value); |
| map.put(pair.getKey(), list); |
| } |
| } |
| if (map.isEmpty()) { |
| LOGGER.error("ThreadContextMapFilter is not configured with any valid key value pairs"); |
| return null; |
| } |
| final boolean isAnd = operator == null || !operator.equalsIgnoreCase("or"); |
| return new ThreadContextMapFilter(map, isAnd, onMatch, onMismatch); |
| } |
| } |