一个简单的log4j2的redis appender ，依赖于Jedis (A simple log4j2 redis appender which uses Jedis)

<?xml version="1.0" encoding="UTF-8"?>
	<Configuration status="info" name="sd" packages="org.greycode.sd.base.log">
	<Properties>
	<Property name="logPattern">[%d{yyyy-MM-dd HH:mm:ss}] [%p] [%c] %m%n</Property>
	</Properties>
	<Appenders>
	<Console name="STDOUT" target="SYSTEM_OUT">
	<PatternLayout pattern="${logPattern}" />
	</Console>
	<NoSql name="redis">
	<!-- <Redis host="localhost" port="" timeout="" password="" database="" clientName=""/> -->
	<Redis host="localhost" />
	</NoSql>
	</Appenders>
	<Loggers>
	<asyncRoot level="info" includeLocation="true">
	<AppenderRef ref="STDOUT" />
	<AppenderRef ref="redis" />
	</asyncRoot>
	</Loggers>
	</Configuration>

Raw

  pom.xml

	<!-- LOG begin -->
	<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-core</artifactId>
	<version>${log4j2.version}</version>
	</dependency>
	<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-jcl</artifactId>
	<version>${log4j2.version}</version>
	</dependency>
	<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-web</artifactId>
	<version>${log4j2.version}</version>
	</dependency>
	<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-slf4j-impl</artifactId>
	<version>${log4j2.version}</version>
	</dependency>
	<dependency>
	<groupId>org.apache.logging.log4j</groupId>
	<artifactId>log4j-nosql</artifactId>
	<version>${log4j2.version}</version>
	</dependency>
	<!-- LOG end -->
	<dependency>
	<groupId>com.lmax</groupId>
	<artifactId>disruptor</artifactId>
	<version>${disruptor.version}</version>
	</dependency>
	<dependency>
	<groupId>redis.clients</groupId>
	<artifactId>jedis</artifactId>
	<version>${jedis.version}</version>
	</dependency>

Raw

  RedisConnection.java

	package org.greycode.sd.base.log;
	import java.util.Map;
	import java.util.concurrent.atomic.AtomicBoolean;
	import org.apache.logging.log4j.core.appender.AppenderLoggingException;
	import org.apache.logging.log4j.nosql.appender.DefaultNoSqlObject;
	import org.apache.logging.log4j.nosql.appender.NoSqlConnection;
	import org.apache.logging.log4j.nosql.appender.NoSqlObject;
	import redis.clients.jedis.Jedis;
	import redis.clients.jedis.JedisPool;
	import com.fasterxml.jackson.databind.ObjectMapper;
	public class RedisConnection implements NoSqlConnection<Map<String, Object>, DefaultNoSqlObject> {
	private static final ObjectMapper mapper = new ObjectMapper();
	private final JedisPool pool;
	private final Jedis jedis;
	private final AtomicBoolean closed = new AtomicBoolean(false);
	public RedisConnection (JedisPool pool) {
	this.jedis = pool.getResource();
	this.pool = pool;
	}
	@Override
	public DefaultNoSqlObject createObject() {
	return new DefaultNoSqlObject();
	}
	@Override
	public DefaultNoSqlObject[] createList(int length) {
	// TODO Auto-generated method stub
	return new DefaultNoSqlObject[length];
	}
	@Override
	public void insertObject(NoSqlObject<Map<String, Object>> object) {
	try {
	jedis.lpush("redis-log4j2", mapper.writeValueAsString(object.unwrap()));
	} catch (Exception e) {
	throw new AppenderLoggingException("往Redis中插入数据时发生错误: " + e.getMessage(), e);
	}
	}
	@Override
	public void close() {
	if (closed.compareAndSet(false, true)) {
	this.pool.close();
	}
	}
	@Override
	public boolean isClosed() {
	return closed.get();
	}
	}

Raw

  RedisProvider.java

	package org.greycode.sd.base.log;
	import org.apache.logging.log4j.Logger;
	import org.apache.logging.log4j.core.config.plugins.Plugin;
	import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
	import org.apache.logging.log4j.core.config.plugins.PluginFactory;
	import org.apache.logging.log4j.nosql.appender.NoSqlProvider;
	import org.apache.logging.log4j.status.StatusLogger;
	import redis.clients.jedis.Jedis;
	import redis.clients.jedis.JedisPool;
	import redis.clients.jedis.JedisPoolConfig;
	import redis.clients.jedis.Protocol;
	@Plugin(name = "Redis", category = "Core", printObject = true)
	public class RedisProvider implements NoSqlProvider<RedisConnection> {
	private static final Logger LOGGER = StatusLogger.getLogger();
	private final JedisPool pool;
	private RedisProvider (JedisPool pool) {
	this.pool = pool;
	}
	@PluginFactory
	public static RedisProvider createNoSqlProvider (
	@PluginAttribute("host") final String host,
	@PluginAttribute("port") int port,
	@PluginAttribute("timeout") int timeout,
	@PluginAttribute("password") final String password,
	@PluginAttribute("database") int database,
	@PluginAttribute("clientName") final String clientName
	) {
	if (host != null && host.length() > 0) {
	try {
	if (port <= 0) port = 6379;
	if (timeout <= 0) timeout = Protocol.DEFAULT_TIMEOUT;
	if (database <= 0) database = Protocol.DEFAULT_DATABASE;
	JedisPool pool = null;
	pool = new JedisPool(new JedisPoolConfig(), host, port, timeout, password, database, clientName);
	try (Jedis jedis = pool.getResource()) { }
	return new RedisProvider(pool);
	} catch (Exception e) {
	LOGGER.error("与Redis服务器建立连接时发生错误[{}:{}]：{}",e.getMessage(), host, port);
	return null;
	}
	}
	LOGGER.error("Redis 服务器地址[host]不能为空");
	return null;
	}
	@Override
	public RedisConnection getConnection() {
	return new RedisConnection(pool);
	}
	}

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