diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d11829c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.classpath
+.project
+.settings/
+target/
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..11069ed
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,201 @@
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+                        Version 2.0, January 2004
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+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+Unless required by applicable law or agreed to in writing, software
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+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..d7de378
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,51 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>audit-sl4j</artifactId>
+  <packaging>jar</packaging>
+  <name>Gerrit Code Review - Audit Listener SL4J Plugin</name>
+  <url>http://maven.apache.org</url>
+  <version>2.9.3</version>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <configuration>
+          <source>1.7</source>
+          <target>1.7</target>
+          <encoding>UTF-8</encoding>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-jar-plugin</artifactId>
+        <version>2.4</version>
+        <configuration>
+          <archive>
+            <manifestEntries>
+              <Gerrit-Version>${project.version}</Gerrit-Version>
+              <Gerrit-ApiType>Plugin</Gerrit-ApiType>
+              <Implementation-Version>${project.version}</Implementation-Version>
+            </manifestEntries>
+          </archive>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.gerrit</groupId>
+      <artifactId>gerrit-plugin-api</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+  </dependencies>
+  <groupId>com.googlesource.gerrit.plugins.auditsl4j</groupId>
+</project>
diff --git a/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/AuditEventFormat.java b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/AuditEventFormat.java
new file mode 100644
index 0000000..cb07193
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/AuditEventFormat.java
@@ -0,0 +1,27 @@
+// Copyright (C) 2012 The Android Open Source Project
+//
+// Licensed 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 com.googlesource.gerrit.plugins.auditsl4j;
+
+import com.google.gerrit.audit.AuditEvent;
+import com.google.gerrit.audit.SshAuditEvent;
+
+public class AuditEventFormat implements AuditFormatter<SshAuditEvent> {
+  public static final Class<?> CLASS = AuditEvent.class;
+
+  @Override
+  public String format(SshAuditEvent result) {
+    return "";
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/AuditFormatter.java b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/AuditFormatter.java
new file mode 100644
index 0000000..67c2589
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/AuditFormatter.java
@@ -0,0 +1,20 @@
+// Copyright (C) 2012 The Android Open Source Project
+//
+// Licensed 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 com.googlesource.gerrit.plugins.auditsl4j;
+
+public interface AuditFormatter<T> {
+
+  String format(T result);
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/HttpAuditEventFormat.java b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/HttpAuditEventFormat.java
new file mode 100644
index 0000000..6551725
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/HttpAuditEventFormat.java
@@ -0,0 +1,26 @@
+// Copyright (C) 2012 The Android Open Source Project
+//
+// Licensed 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 com.googlesource.gerrit.plugins.auditsl4j;
+
+import com.google.gerrit.audit.HttpAuditEvent;
+
+public class HttpAuditEventFormat implements AuditFormatter<HttpAuditEvent> {
+  protected static final Class<?> CLASS = HttpAuditEvent.class;
+
+  @Override
+  public String format(HttpAuditEvent result) {
+    return "HTTP-" + result.httpMethod + ", Status:" + result.httpStatus;
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/LoggerAudit.java b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/LoggerAudit.java
new file mode 100644
index 0000000..805562f
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/LoggerAudit.java
@@ -0,0 +1,128 @@
+// Copyright (C) 2012 The Android Open Source Project
+//
+// Licensed 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 com.googlesource.gerrit.plugins.auditsl4j;
+
+import java.text.SimpleDateFormat;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
+import java.util.TreeSet;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.collect.Multimap;
+import com.google.gerrit.audit.AuditEvent;
+import com.google.gerrit.audit.AuditListener;
+import com.google.gerrit.extensions.annotations.Listen;
+import com.google.inject.Singleton;
+
+@Listen
+@Singleton
+public class LoggerAudit implements AuditListener {
+  private static final Logger log = LoggerFactory.getLogger(LoggerAudit.class);
+  private final SimpleDateFormat dateFmt = new SimpleDateFormat(
+      "yyyy/MM/dd hh:mm:ss.SSSS");
+  @SuppressWarnings("serial")
+  private static final Map<Class<?>, AuditFormatter<?>> AUDIT_FORMATTERS =
+      Collections
+          .unmodifiableMap(new HashMap<Class<?>, AuditFormatter<? extends Object>>() {
+            {
+              put(HttpAuditEventFormat.CLASS, new HttpAuditEventFormat());
+              put(RpcAuditEventFormat.CLASS, new RpcAuditEventFormat());
+              put(SshAuditEventFormat.CLASS, new SshAuditEventFormat());
+              put(AuditEventFormat.CLASS, new AuditEventFormat());
+            }
+          });
+
+  static {
+    log.info("EventId | EventTS | SessionId | User | Protocol data | Action | Parameters | Result | StartTS | Elapsed");
+  }
+
+  @Override
+  public void onAuditableAction(AuditEvent action) {
+    log.info(getFormattedAudit(action));
+  }
+
+  private String getFormattedAudit(AuditEvent action) {
+    return String.format(
+        "%1$s | %2$s | %3$s | %4$s | %5$s | %6$s | %7$s | %8$s | %9$s | %10$s",
+        action.uuid.get(), getFormattedTS(action.when), action.sessionId,
+        getFormattedAuditSingle(action.who), getFormattedAuditSingle(action),
+        action.what, getFormattedAuditList(action.params),
+        getFormattedAuditSingle(action.result),
+        getFormattedTS(action.timeAtStart), action.elapsed);
+  }
+
+  private Object getFormattedAuditList(Multimap<String, ?> params) {
+    if (params == null || params.size() == 0) {
+      return "[]";
+    }
+
+    StringBuilder formattedOut = new StringBuilder("[");
+
+    Set<String> paramNames = new TreeSet<>(params.keySet());
+
+    int numParams = 0;
+    for (String paramName : paramNames) {
+      if (numParams++ > 0) {
+        formattedOut.append(",");
+      }
+      formattedOut.append(paramName);
+      formattedOut.append("=");
+      formattedOut.append(getFormattedAudit(params.get(paramName)));
+    }
+
+    formattedOut.append(']');
+
+    return formattedOut.toString();
+  }
+
+  private Object getFormattedAudit(Collection<? extends Object> values) {
+    StringBuilder out = new StringBuilder();
+    int numValues = 0;
+    for (Object object : values) {
+      if (numValues > 0) {
+        out.append(",");
+      }
+      out.append(getFormattedAuditSingle(object));
+      numValues++;
+    }
+
+    if (numValues > 1) {
+      return "[" + out.toString() + "]";
+    } else {
+      return out.toString();
+    }
+  }
+
+  private <T> String getFormattedAuditSingle(T result) {
+    if (result == null) return "";
+
+    @SuppressWarnings("unchecked")
+    AuditFormatter<T> fmt =
+        (AuditFormatter<T>) AUDIT_FORMATTERS.get(result.getClass());
+    if (fmt == null) return result.toString();
+
+    return fmt.format(result);
+  }
+
+  private synchronized String getFormattedTS(long when) {
+    return dateFmt.format(new Date(when));
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/RpcAuditEventFormat.java b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/RpcAuditEventFormat.java
new file mode 100644
index 0000000..5aa47bf
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/RpcAuditEventFormat.java
@@ -0,0 +1,27 @@
+// Copyright (C) 2012 The Android Open Source Project
+//
+// Licensed 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 com.googlesource.gerrit.plugins.auditsl4j;
+
+import com.google.gerrit.audit.HttpAuditEvent;
+import com.google.gerrit.audit.RpcAuditEvent;
+
+public class RpcAuditEventFormat implements AuditFormatter<HttpAuditEvent> {
+  protected static final Class<?> CLASS = RpcAuditEvent.class;
+
+  @Override
+  public String format(HttpAuditEvent result) {
+    return "RPC-" + result.httpMethod + ", Status:" + result.httpStatus;
+  }
+}
diff --git a/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/SshAuditEventFormat.java b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/SshAuditEventFormat.java
new file mode 100644
index 0000000..9a15f77
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/plugins/auditsl4j/SshAuditEventFormat.java
@@ -0,0 +1,26 @@
+// Copyright (C) 2012 The Android Open Source Project
+//
+// Licensed 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 com.googlesource.gerrit.plugins.auditsl4j;
+
+import com.google.gerrit.audit.SshAuditEvent;
+
+public class SshAuditEventFormat implements AuditFormatter<SshAuditEvent> {
+  protected static final Class<?> CLASS = SshAuditEvent.class;
+
+  @Override
+  public String format(SshAuditEvent result) {
+    return "SSH";
+  }
+}