diff --git a/library/log4php/appenders/LoggerAppenderMongoDB.php b/library/log4php/appenders/LoggerAppenderMongoDB.php
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+++ b/library/log4php/appenders/LoggerAppenderMongoDB.php
@@ -0,0 +1,361 @@
+<?php
+/**
+ * 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.
+ */
+
+/**
+ * Appender for writing to MongoDB.
+ *
+ * This class was originally contributed by Vladimir Gorej.
+ *
+ * ## Configurable parameters: ##
+ *
+ * - **host** - Server on which mongodb instance is located.
+ * - **port** - Port on which the instance is bound.
+ * - **databaseName** - Name of the database to which to log.
+ * - **collectionName** - Name of the target collection within the given database.
+ * - **username** - Username used to connect to the database.
+ * - **password** - Password used to connect to the database.
+ * - **timeout** - For how long the driver should try to connect to the database (in milliseconds).
+ *
+ * @version $Revision: 1346363 $
+ * @package log4php
+ * @subpackage appenders
+ * @since 2.1
+ * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
+ * @link http://logging.apache.org/log4php/docs/appenders/mongodb.html Appender documentation
+ * @link http://github.com/log4mongo/log4mongo-php Vladimir Gorej's original submission.
+ * @link http://www.mongodb.org/ MongoDB website.
+ */
+class LoggerAppenderMongoDB extends LoggerAppender {
+
+ // ******************************************
+ // ** Constants **
+ // ******************************************
+
+ /** Default prefix for the {@link $host}. */
+ const DEFAULT_MONGO_URL_PREFIX = 'mongodb://';
+
+ /** Default value for {@link $host}, without a prefix. */
+ const DEFAULT_MONGO_HOST = 'localhost';
+
+ /** Default value for {@link $port} */
+ const DEFAULT_MONGO_PORT = 27017;
+
+ /** Default value for {@link $databaseName} */
+ const DEFAULT_DB_NAME = 'log4php_mongodb';
+
+ /** Default value for {@link $collectionName} */
+ const DEFAULT_COLLECTION_NAME = 'logs';
+
+ /** Default value for {@link $timeout} */
+ const DEFAULT_TIMEOUT_VALUE = 3000;
+
+ // ******************************************
+ // ** Configurable parameters **
+ // ******************************************
+
+ /** Server on which mongodb instance is located. */
+ protected $host;
+
+ /** Port on which the instance is bound. */
+ protected $port;
+
+ /** Name of the database to which to log. */
+ protected $databaseName;
+
+ /** Name of the collection within the given database. */
+ protected $collectionName;
+
+ /** Username used to connect to the database. */
+ protected $userName;
+
+ /** Password used to connect to the database. */
+ protected $password;
+
+ /** Timeout value used when connecting to the database (in milliseconds). */
+ protected $timeout;
+
+ // ******************************************
+ // ** Member variables **
+ // ******************************************
+
+ /**
+ * Connection to the MongoDB instance.
+ * @var Mongo
+ */
+ protected $connection;
+
+ /**
+ * The collection to which log is written.
+ * @var MongoCollection
+ */
+ protected $collection;
+
+ public function __construct($name = '') {
+ parent::__construct($name);
+ $this->host = self::DEFAULT_MONGO_URL_PREFIX . self::DEFAULT_MONGO_HOST;
+ $this->port = self::DEFAULT_MONGO_PORT;
+ $this->databaseName = self::DEFAULT_DB_NAME;
+ $this->collectionName = self::DEFAULT_COLLECTION_NAME;
+ $this->timeout = self::DEFAULT_TIMEOUT_VALUE;
+ $this->requiresLayout = false;
+ }
+
+ /**
+ * Setup db connection.
+ * Based on defined options, this method connects to the database and
+ * creates a {@link $collection}.
+ */
+ public function activateOptions() {
+ try {
+ $this->connection = new Mongo(sprintf('%s:%d', $this->host, $this->port), array('timeout' => $this->timeout));
+ $db = $this->connection->selectDB($this->databaseName);
+ if ($this->userName !== null && $this->password !== null) {
+ $authResult = $db->authenticate($this->userName, $this->password);
+ if ($authResult['ok'] == floatval(0)) {
+ throw new Exception($authResult['errmsg'], $authResult['ok']);
+ }
+ }
+ $this->collection = $db->selectCollection($this->collectionName);
+ } catch (MongoConnectionException $ex) {
+ $this->closed = true;
+ $this->warn(sprintf('Failed to connect to mongo deamon: %s', $ex->getMessage()));
+ } catch (InvalidArgumentException $ex) {
+ $this->closed = true;
+ $this->warn(sprintf('Error while selecting mongo database: %s', $ex->getMessage()));
+ } catch (Exception $ex) {
+ $this->closed = true;
+ $this->warn('Invalid credentials for mongo database authentication');
+ }
+ }
+
+ /**
+ * Appends a new event to the mongo database.
+ *
+ * @param LoggerLoggingEvent $event
+ */
+ public function append(LoggerLoggingEvent $event) {
+ try {
+ if ($this->collection != null) {
+ $this->collection->insert($this->format($event));
+ }
+ } catch (MongoCursorException $ex) {
+ $this->warn(sprintf('Error while writing to mongo collection: %s', $ex->getMessage()));
+ }
+ }
+
+ /**
+ * Converts the logging event into an array which can be logged to mongodb.
+ *
+ * @param LoggerLoggingEvent $event
+ * @return array The array representation of the logging event.
+ */
+ protected function format(LoggerLoggingEvent $event) {
+ $timestampSec = (int)$event->getTimestamp();
+ $timestampUsec = (int)(($event->getTimestamp() - $timestampSec) * 1000000);
+
+ $document = array(
+ 'timestamp' => new MongoDate($timestampSec, $timestampUsec),
+ 'level' => $event->getLevel()->toString(),
+ 'thread' => (int)$event->getThreadName(),
+ 'message' => $event->getMessage(),
+ 'loggerName' => $event->getLoggerName()
+ );
+
+ $locationInfo = $event->getLocationInformation();
+ if ($locationInfo != null) {
+ $document['fileName'] = $locationInfo->getFileName();
+ $document['method'] = $locationInfo->getMethodName();
+ $document['lineNumber'] = ($locationInfo->getLineNumber() == 'NA') ? 'NA' : (int)$locationInfo->getLineNumber();
+ $document['className'] = $locationInfo->getClassName();
+ }
+
+ $throwableInfo = $event->getThrowableInformation();
+ if ($throwableInfo != null) {
+ $document['exception'] = $this->formatThrowable($throwableInfo->getThrowable());
+ }
+
+ return $document;
+ }
+
+ /**
+ * Converts an Exception into an array which can be logged to mongodb.
+ *
+ * Supports innner exceptions (PHP >= 5.3)
+ *
+ * @param Exception $ex
+ * @return array
+ */
+ protected function formatThrowable(Exception $ex) {
+ $array = array(
+ 'message' => $ex->getMessage(),
+ 'code' => $ex->getCode(),
+ 'stackTrace' => $ex->getTraceAsString(),
+ );
+
+ if (method_exists($ex, 'getPrevious') && $ex->getPrevious() !== null) {
+ $array['innerException'] = $this->formatThrowable($ex->getPrevious());
+ }
+
+ return $array;
+ }
+
+ /**
+ * Closes the connection to the logging database
+ */
+ public function close() {
+ if ($this->closed != true) {
+ $this->collection = null;
+ if ($this->connection !== null) {
+ $this->connection->close();
+ $this->connection = null;
+ }
+ $this->closed = true;
+ }
+ }
+
+ /**
+ * Sets the value of {@link $host} parameter.
+ * @param string $host
+ */
+ public function setHost($host) {
+ if (!preg_match('/^mongodb\:\/\//', $host)) {
+ $host = self::DEFAULT_MONGO_URL_PREFIX . $host;
+ }
+ $this->host = $host;
+ }
+
+ /**
+ * Returns the value of {@link $host} parameter.
+ * @return string
+ */
+ public function getHost() {
+ return $this->host;
+ }
+
+ /**
+ * Sets the value of {@link $port} parameter.
+ * @param int $port
+ */
+ public function setPort($port) {
+ $this->setPositiveInteger('port', $port);
+ }
+
+ /**
+ * Returns the value of {@link $port} parameter.
+ * @return int
+ */
+ public function getPort() {
+ return $this->port;
+ }
+
+ /**
+ * Sets the value of {@link $databaseName} parameter.
+ * @param string $databaseName
+ */
+ public function setDatabaseName($databaseName) {
+ $this->setString('databaseName', $databaseName);
+ }
+
+ /**
+ * Returns the value of {@link $databaseName} parameter.
+ * @return string
+ */
+ public function getDatabaseName() {
+ return $this->databaseName;
+ }
+
+ /**
+ * Sets the value of {@link $collectionName} parameter.
+ * @param string $collectionName
+ */
+ public function setCollectionName($collectionName) {
+ $this->setString('collectionName', $collectionName);
+ }
+
+ /**
+ * Returns the value of {@link $collectionName} parameter.
+ * @return string
+ */
+ public function getCollectionName() {
+ return $this->collectionName;
+ }
+
+ /**
+ * Sets the value of {@link $userName} parameter.
+ * @param string $userName
+ */
+ public function setUserName($userName) {
+ $this->setString('userName', $userName, true);
+ }
+
+ /**
+ * Returns the value of {@link $userName} parameter.
+ * @return string
+ */
+ public function getUserName() {
+ return $this->userName;
+ }
+
+ /**
+ * Sets the value of {@link $password} parameter.
+ * @param string $password
+ */
+ public function setPassword($password) {
+ $this->setString('password', $password, true);
+ }
+
+ /**
+ * Returns the value of {@link $password} parameter.
+ * @return string
+ */
+ public function getPassword() {
+ return $this->password;
+ }
+
+ /**
+ * Sets the value of {@link $timeout} parameter.
+ * @param int $timeout
+ */
+ public function setTimeout($timeout) {
+ $this->setPositiveInteger('timeout', $timeout);
+ }
+
+ /**
+ * Returns the value of {@link $timeout} parameter.
+ * @return int
+ */
+ public function getTimeout() {
+ return $this->timeout;
+ }
+
+ /**
+ * Returns the mongodb connection.
+ * @return Mongo
+ */
+ public function getConnection() {
+ return $this->connection;
+ }
+
+ /**
+ * Returns the active mongodb collection.
+ * @return MongoCollection
+ */
+ public function getCollection() {
+ return $this->collection;
+ }
+}