001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017package org.apache.logging.log4j.core.config.json; 018 019import org.apache.logging.log4j.core.config.Configuration; 020import org.apache.logging.log4j.core.config.ConfigurationFactory; 021import org.apache.logging.log4j.core.config.ConfigurationSource; 022import org.apache.logging.log4j.core.config.Order; 023import org.apache.logging.log4j.core.config.plugins.Plugin; 024import org.apache.logging.log4j.core.util.Loader; 025 026/** 027 * 028 */ 029@Plugin(name = "JsonConfigurationFactory", category = ConfigurationFactory.CATEGORY) 030@Order(6) 031public class JsonConfigurationFactory extends ConfigurationFactory { 032 033 /** 034 * The file extensions supported by this factory. 035 */ 036 private static final String[] SUFFIXES = new String[] {".json", ".jsn"}; 037 038 private static final String[] dependencies = new String[] { 039 "com.fasterxml.jackson.databind.ObjectMapper", 040 "com.fasterxml.jackson.databind.JsonNode", 041 "com.fasterxml.jackson.core.JsonParser" 042 }; 043 044 private final boolean isActive; 045 046 public JsonConfigurationFactory() { 047 for (final String dependency : dependencies) { 048 if (!Loader.isClassAvailable(dependency)) { 049 LOGGER.debug("Missing dependencies for Json support"); 050 isActive = false; 051 return; 052 } 053 } 054 isActive = true; 055 } 056 057 @Override 058 protected boolean isActive() { 059 return isActive; 060 } 061 062 @Override 063 public Configuration getConfiguration(final ConfigurationSource source) { 064 if (!isActive) { 065 return null; 066 } 067 return new JsonConfiguration(source); 068 } 069 070 @Override 071 public String[] getSupportedTypes() { 072 return SUFFIXES; 073 } 074}