| /* |
| * 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 org.apache.logging.log4j.Level; |
| import org.apache.logging.log4j.Marker; |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.core.Logger; |
| import org.apache.logging.log4j.core.config.plugins.Plugin; |
| import org.apache.logging.log4j.core.config.plugins.PluginAttr; |
| import org.apache.logging.log4j.core.config.plugins.PluginElement; |
| import org.apache.logging.log4j.core.config.plugins.PluginFactory; |
| import org.apache.logging.log4j.core.helpers.KeyValuePair; |
| import org.apache.logging.log4j.message.MapMessage; |
| import org.apache.logging.log4j.message.Message; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * A Filter that operates on a Map. |
| */ |
| @Plugin(name = "MapFilter", category = "Core", elementType = "filter", printObject = true) |
| public class MapFilter extends AbstractFilter { |
| private final Map<String, List<String>> map; |
| |
| private final boolean isAnd; |
| |
| protected MapFilter(final Map<String, List<String>> map, final boolean oper, final Result onMatch, |
| final Result onMismatch) { |
| super(onMatch, onMismatch); |
| if (map == null) { |
| throw new NullPointerException("key cannot be null"); |
| } |
| this.isAnd = oper; |
| this.map = map; |
| } |
| |
| @Override |
| public Result filter(final Logger logger, final Level level, final Marker marker, final Message msg, |
| final Throwable t) { |
| if (msg instanceof MapMessage) { |
| return filter(((MapMessage) msg).getData()) ? onMatch : onMismatch; |
| } |
| return Result.NEUTRAL; |
| } |
| |
| @Override |
| public Result filter(final LogEvent event) { |
| final Message msg = event.getMessage(); |
| if (msg instanceof MapMessage) { |
| return filter(((MapMessage) msg).getData()) ? onMatch : onMismatch; |
| } |
| return Result.NEUTRAL; |
| } |
| |
| protected boolean filter(final Map<String, String> data) { |
| boolean match = false; |
| for (final Map.Entry<String, List<String>> entry : map.entrySet()) { |
| final String toMatch = data.get(entry.getKey()); |
| if (toMatch != null) { |
| match = entry.getValue().contains(toMatch); |
| } else { |
| match = false; |
| } |
| if ((!isAnd && match) || (isAnd && !match)) { |
| break; |
| } |
| } |
| return match; |
| } |
| |
| @Override |
| public String toString() { |
| final StringBuilder sb = new StringBuilder(); |
| sb.append("isAnd=").append(isAnd); |
| if (map.size() > 0) { |
| sb.append(", {"); |
| boolean first = true; |
| for (final Map.Entry<String, List<String>> entry : map.entrySet()) { |
| if (!first) { |
| sb.append(", "); |
| } |
| first = false; |
| final List<String> list = entry.getValue(); |
| final String value = list.size() > 1 ? list.get(0) : list.toString(); |
| sb.append(entry.getKey()).append("=").append(value); |
| } |
| sb.append("}"); |
| } |
| return sb.toString(); |
| } |
| |
| protected boolean isAnd() { |
| return isAnd; |
| } |
| |
| protected Map<String, List<String>> getMap() { |
| return map; |
| } |
| |
| @PluginFactory |
| public static MapFilter createFilter(@PluginElement("pairs") final KeyValuePair[] pairs, |
| @PluginAttr("operator") final String oper, |
| @PluginAttr("onmatch") final String match, |
| @PluginAttr("onmismatch") final String mismatch) { |
| if (pairs == null || pairs.length == 0) { |
| LOGGER.error("keys and values must be specified for the MapFilter"); |
| return null; |
| } |
| final Map<String, List<String>> map = new HashMap<String, List<String>>(); |
| 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<String>(); |
| list.add(value); |
| map.put(pair.getKey(), list); |
| } |
| } |
| if (map.size() == 0) { |
| LOGGER.error("MapFilter is not configured with any valid key value pairs"); |
| return null; |
| } |
| final boolean isAnd = oper == null || !oper.equalsIgnoreCase("or"); |
| final Result onMatch = Result.toResult(match); |
| final Result onMismatch = Result.toResult(mismatch); |
| return new MapFilter(map, isAnd, onMatch, onMismatch); |
| } |
| } |