package br.com.ingenieux.mojo.jbake;
/*
* Copyright 2013 ingenieux Labs
*
* 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.
*/
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugins.annotations.Mojo;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.concurrent.atomic.AtomicBoolean;
import br.com.ingenieux.mojo.jbake.util.DirWatcher;
import static org.apache.commons.lang.StringUtils.isBlank;
/**
* Runs jbake on a folder while watching for changes
*/
@Mojo(name = "watch", requiresDirectInvocation = true, requiresProject = false)
public class WatchMojo extends GenerateMojo {
public void executeInternal() throws MojoExecutionException {
reRender();
Long lastProcessed = Long.valueOf(System.currentTimeMillis());
getLog().info(
"Now listening for changes on path " + inputDirectory.getPath());
initServer();
DirWatcher dirWatcher = null;
try {
dirWatcher = new DirWatcher(inputDirectory);
final AtomicBoolean done = new AtomicBoolean(false);
final BufferedReader reader = new BufferedReader(
new InputStreamReader(System.in));
(new Thread() {
@Override
public void run() {
try {
getLog()
.info("Running. Enter a blank line to finish. Anything else forces re-rendering.");
while (true) {
String line = reader.readLine();
if (isBlank(line)) {
break;
}
reRender();
}
} catch (Exception exc) {
getLog().info("Ooops", exc);
} finally {
done.set(true);
}
}
}).start();
dirWatcher.start();
do {
Long result = dirWatcher.processEvents();
if (null == result) {
// do nothing on purpose
} else if (result >= lastProcessed) {
getLog().info("Refreshing");
super.execute();
lastProcessed = Long.valueOf(System.currentTimeMillis());
}
} while (!done.get());
} catch (Exception exc) {
getLog().info("Oops", exc);
throw new MojoExecutionException("Oops", exc);
} finally {
getLog().info("Finishing");
if (null != dirWatcher)
dirWatcher.stop();
stopServer();
}
}
protected void stopServer() throws MojoExecutionException {
}
protected void initServer() throws MojoExecutionException {
}
}