com.dev9.mvnwatcher.event.FileChangeSubscriber Maven / Gradle / Ivy

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Maven Plugin to watch file system changes and automatically restart builds

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package com.dev9.mvnwatcher.event;

import com.dev9.mvnwatcher.MvnRunner;
import com.google.common.eventbus.Subscribe;

import java.util.Objects;


public class FileChangeSubscriber implements PathEventSubscriber {

    DirectoryEventWatcher dirWatcher;
    MvnRunner runner;

    public FileChangeSubscriber(DirectoryEventWatcher dirWatcher, MvnRunner runner) {
        this.dirWatcher = Objects.requireNonNull(dirWatcher);
        this.runner = Objects.requireNonNull(runner);
    }

    @Subscribe
    @Override
    public void handlePathEvents(PathEventContext pathEventContext) {


        for (PathEvent evt : pathEventContext.getEvents()) {

            if (evt.getEventTarget().getFileName().toString().indexOf(".") == 0) {
                System.out.println("Ignoring change to path entry with a .");
            } else {
                System.out.println("Noticed " + evt.getType().name() + " to " + evt.getEventTarget().getFileName());
                runner.changeEvent();
            }

            //TODO add newly created directories to monitoring
            //TODO remove deleted directories from monitoring
        }
    }

}