org.apache.tika.batch.Interrupter Maven / Gradle / Ivy
package org.apache.tika.batch;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.concurrent.Callable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static java.nio.charset.StandardCharsets.UTF_8;
/**
* Class that waits for input on System.in. If the user enters a keystroke on
* System.in, this will send a signal to the FileResourceRunner to shutdown gracefully.
*
*
* In the future, this may implement a common IInterrupter interface for more flexibility.
*/
public class Interrupter implements Callable {
private Logger logger = LoggerFactory.getLogger(Interrupter.class);
public IFileProcessorFutureResult call(){
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in, UTF_8));
while (true){
if (reader.ready()){
reader.readLine();
break;
} else {
Thread.sleep(1000);
}
}
} catch (InterruptedException e){
//canceller was interrupted
} catch (IOException e){
logger.error("IOException from STDIN in CommandlineInterrupter.");
}
return new InterrupterFutureResult();
}
}