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.nosql.appender.mongodb; 018 019import org.apache.logging.log4j.Level; 020import org.apache.logging.log4j.Logger; 021import org.apache.logging.log4j.core.appender.AppenderLoggingException; 022import org.apache.logging.log4j.nosql.appender.AbstractNoSqlConnection; 023import org.apache.logging.log4j.nosql.appender.NoSqlConnection; 024import org.apache.logging.log4j.nosql.appender.NoSqlObject; 025import org.apache.logging.log4j.status.StatusLogger; 026import org.bson.BSON; 027import org.bson.Transformer; 028 029import com.mongodb.BasicDBObject; 030import com.mongodb.DB; 031import com.mongodb.DBCollection; 032import com.mongodb.MongoException; 033import com.mongodb.WriteConcern; 034 035/** 036 * The MongoDB implementation of {@link NoSqlConnection}. 037 */ 038public final class MongoDbConnection extends AbstractNoSqlConnection<BasicDBObject, MongoDbObject> { 039 040 private static final Logger LOGGER = StatusLogger.getLogger(); 041 042 static { 043 BSON.addEncodingHook(Level.class, new Transformer() { 044 @Override 045 public Object transform(final Object o) { 046 if (o instanceof Level) { 047 return ((Level) o).name(); 048 } 049 return o; 050 } 051 }); 052 } 053 054 private final DBCollection collection; 055 private final WriteConcern writeConcern; 056 057 public MongoDbConnection(final DB database, final WriteConcern writeConcern, final String collectionName) { 058 this.collection = database.getCollection(collectionName); 059 this.writeConcern = writeConcern; 060 } 061 062 @Override 063 public MongoDbObject createObject() { 064 return new MongoDbObject(); 065 } 066 067 @Override 068 public MongoDbObject[] createList(final int length) { 069 return new MongoDbObject[length]; 070 } 071 072 @Override 073 public void insertObject(final NoSqlObject<BasicDBObject> object) { 074 try { 075 this.collection.insert(object.unwrap(), this.writeConcern); 076 } catch (final MongoException e) { 077 throw new AppenderLoggingException("Failed to write log event to MongoDB due to error: " + e.getMessage(), 078 e); 079 } 080 } 081 082 @Override 083 public void closeImpl() { 084 // LOG4J2-1196 085 this.collection.getDB().getMongo().close(); 086 } 087 088}