com.moilioncircle.redis.replicator.io.AsyncBufferedInputStream Maven / Gradle / Ivy
/*
* 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.
*/
package com.moilioncircle.redis.replicator.io;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
/**
* @author Jingqi Xu
* @author andyqzb
* @since 2.1.0
*/
public final class AsyncBufferedInputStream extends AbstractAsyncInputStream implements Runnable {
protected final Thread worker;
protected final ThreadFactory threadFactory;
/*
*
*/
public AsyncBufferedInputStream(InputStream is) {
this(is, DEFAULT_CAPACITY);
}
public AsyncBufferedInputStream(InputStream is, int size) {
this(is, size, Executors.defaultThreadFactory());
}
public AsyncBufferedInputStream(InputStream is, int size, ThreadFactory tf) {
super(is, size);
this.threadFactory = tf;
//
this.worker = this.threadFactory.newThread(this);
this.worker.start();
}
/*
*
*/
@Override
public void run() {
try {
final byte[] buffer = new byte[512 * 1024];
while (!this.closed.get()) {
//
int r = ((InputStream) this.resource).read(buffer, 0, buffer.length);
if (r < 0) throw new EOFException();
//
int offset = 0;
while (r > 0) {
final int w = write(buffer, offset, r);
r -= w;
offset += w;
}
}
} catch (IOException e) {
this.exception = e;
} catch (Exception e) {
logger.error("failed to transfer data", e);
} finally {
if (!this.closed.get()) {
try {
close();
} catch (IOException e) {
logger.error("failed to close is", e);
}
}
}
}
}