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/*
* ====================================================================
* 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.impl.client.cache;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import ch.boye.httpclientandroidlib.annotation.Immutable;
import ch.boye.httpclientandroidlib.client.cache.InputLimit;
import ch.boye.httpclientandroidlib.client.cache.Resource;
import ch.boye.httpclientandroidlib.client.cache.ResourceFactory;
/**
* Generates {@link Resource} instances stored entirely in heap.
*
* @since 4.1
*/
@Immutable
public class HeapResourceFactory implements ResourceFactory {
public Resource generate(
final String requestId,
final InputStream instream,
final InputLimit limit) throws IOException {
final ByteArrayOutputStream outstream = new ByteArrayOutputStream();
final byte[] buf = new byte[2048];
long total = 0;
int l;
while ((l = instream.read(buf)) != -1) {
outstream.write(buf, 0, l);
total += l;
if (limit != null && total > limit.getValue()) {
limit.reached();
break;
}
}
return createResource(outstream.toByteArray());
}
public Resource copy(
final String requestId,
final Resource resource) throws IOException {
byte[] body;
if (resource instanceof HeapResource) {
body = ((HeapResource) resource).getByteArray();
} else {
final ByteArrayOutputStream outstream = new ByteArrayOutputStream();
IOUtils.copyAndClose(resource.getInputStream(), outstream);
body = outstream.toByteArray();
}
return createResource(body);
}
Resource createResource(final byte[] buf) {
return new HeapResource(buf);
}
}
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