Tayler is a log tailing implementation forked from Apache Commons IO, providing improved performances, bug fixes, cleaner APIs and a codebase which will be actively maintained and developed :)

First, you need to implement the tayler.TailerListener or tayler.TailerListenerAdapter, providing an implementation for the following API methods:

• init: called on listener initialization.
• handle: called at each line handling.
• fileNotFound: called if the tailed file is not found.
• fileRotated: called if the tailed file is rotated.
• error: called in case of tail/handling errors.
• stop: called after stopping tailer.

Then, you just create a tayler.Tailer object by specifying the following constructor arguments:

• file: the log file to tail.
• listener: the previously implemented listener.
• delay: the tail delay time, in milliseconds.
• end: a boolean specifying if tailing from start or end of file.
• bufferSize: the size of the buffer for buffered reads, in bytes.

The tayler.Tailer object is indeed a Runnable, so the final step is to start a thread or submit it to an executor in order to actually start tailing. That's it.

Tayler is a self-contained jar you can download from the Downloads section above.

If you're a Maven user, you can also configure Tayler on your project by importing the Clojars repository:

<repository>
    <id>clojars.org</id>
    <url>http://clojars.org/repo</url>
</repository>

And then declaring the dependency:

<dependency>
    <groupId>tayler</groupId>
   <artifactId>tayler</artifactId>
   <version>1.1</version>
</dependency>

Contact me on twitter.

Distributed under the Apache Software License.