File Watch

JVM since1.0.0 Native since1.0.0

Get notified about file events in a directory using java.nio.file.WatchService.

What’s inside

Please refer to the above link for usage and configuration details.

Maven coordinates

Create a new project with this extension on code.quarkus.io

Or add the coordinates to your existing project:

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-file-watch</artifactId>
</dependency>

Check the User guide for more information about writing Camel Quarkus applications.

Camel Quarkus limitations

The underlying Camel component configures the Directory Watcher in a platform specific way:

  • On Mac, the io.methvin.watchservice.MacOSXListeningWatchService is used that depends on net.java.dev.jna:jna.

  • Other platforms use java.nio.file.WatchService provided by the Java Runtime.

Because JNA is not supported on GraalVM yet, we made the component to behave differently on Camel Quarkus: We are substituting the respective Directory Watcher method do use the stock java.nio.file.WatchService also on Mac.

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