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https://gitlab.com/mangadex-pub/mangadex_at_home.git
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88 lines
2.3 KiB
Java
88 lines
2.3 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package mdnet.cache;
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import org.apache.commons.io.IOUtils;
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import org.apache.commons.io.input.ProxyInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.concurrent.ExecutorService;
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import static org.apache.commons.io.IOUtils.EOF;
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public class CachingInputStream extends ProxyInputStream {
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private final OutputStream cache;
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private final ExecutorService executor;
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private final Runnable onClose;
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public CachingInputStream(InputStream response, ExecutorService executor, OutputStream cache, Runnable onClose) {
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super(response);
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this.executor = executor;
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this.cache = cache;
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this.onClose = onClose;
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}
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@Override
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public void close() throws IOException {
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executor.submit(() -> {
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try {
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IOUtils.copy(in, cache);
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} catch (IOException ignored) {
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} finally {
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try {
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in.close();
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} catch (IOException ignored) {
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}
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try {
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cache.close();
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} catch (IOException ignored) {
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}
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onClose.run();
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}
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});
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}
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@Override
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public int read() throws IOException {
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final int ch = super.read();
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if (ch != EOF) {
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cache.write(ch);
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}
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return ch;
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}
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@Override
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public int read(final byte[] bts, final int st, final int end) throws IOException {
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final int n = super.read(bts, st, end);
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if (n != EOF) {
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cache.write(bts, st, n);
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}
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return n;
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}
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@Override
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public int read(final byte[] bts) throws IOException {
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final int n = super.read(bts);
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if (n != EOF) {
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cache.write(bts, 0, n);
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}
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return n;
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}
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}
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