/*
* Copyright 2011 The Netty Project
*
* The Netty Project 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 io.netty.handler.codec.http;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;
import io.netty.buffer.ChannelBuffer;
import io.netty.buffer.ChannelBuffers;
/**
* Abstract Memory HttpData implementation
*/
public abstract class AbstractMemoryHttpData extends AbstractHttpData {
private ChannelBuffer channelBuffer;
private int chunkPosition;
protected boolean isRenamed;
public AbstractMemoryHttpData(String name, Charset charset, long size) {
super(name, charset, size);
}
@Override
public void setContent(ChannelBuffer buffer) throws IOException {
if (buffer == null) {
throw new NullPointerException("buffer");
}
long localsize = buffer.readableBytes();
if (definedSize > 0 && definedSize < localsize) {
throw new IOException("Out of size: " + localsize + " > " +
definedSize);
}
channelBuffer = buffer;
size = localsize;
completed = true;
}
@Override
public void setContent(InputStream inputStream) throws IOException {
if (inputStream == null) {
throw new NullPointerException("inputStream");
}
ChannelBuffer buffer = ChannelBuffers.dynamicBuffer();
byte[] bytes = new byte[4096 * 4];
int read = inputStream.read(bytes);
int written = 0;
while (read > 0) {
buffer.writeBytes(bytes);
written += read;
read = inputStream.read(bytes);
}
size = written;
if (definedSize > 0 && definedSize < size) {
throw new IOException("Out of size: " + size + " > " + definedSize);
}
channelBuffer = buffer;
completed = true;
}
@Override
public void addContent(ChannelBuffer buffer, boolean last)
throws IOException {
if (buffer != null) {
long localsize = buffer.readableBytes();
if (definedSize > 0 && definedSize < size + localsize) {
throw new IOException("Out of size: " + (size + localsize) +
" > " + definedSize);
}
size += localsize;
if (channelBuffer == null) {
channelBuffer = buffer;
} else {
channelBuffer = ChannelBuffers.wrappedBuffer(
channelBuffer, buffer);
}
}
if (last) {
completed = true;
} else {
if (buffer == null) {
throw new NullPointerException("buffer");
}
}
}
@Override
public void setContent(File file) throws IOException {
if (file == null) {
throw new NullPointerException("file");
}
long newsize = file.length();
if (newsize > Integer.MAX_VALUE) {
throw new IllegalArgumentException(
"File too big to be loaded in memory");
}
FileInputStream inputStream = new FileInputStream(file);
FileChannel fileChannel = inputStream.getChannel();
byte[] array = new byte[(int) newsize];
ByteBuffer byteBuffer = ByteBuffer.wrap(array);
int read = 0;
while (read < newsize) {
read += fileChannel.read(byteBuffer);
}
fileChannel.close();
byteBuffer.flip();
channelBuffer = ChannelBuffers.wrappedBuffer(byteBuffer);
size = newsize;
completed = true;
}
@Override
public void delete() {
// nothing to do
}
@Override
public byte[] get() {
if (channelBuffer == null) {
return new byte[0];
}
byte[] array = new byte[channelBuffer.readableBytes()];
channelBuffer.getBytes(channelBuffer.readerIndex(), array);
return array;
}
@Override
public String getString() {
return getString(HttpCodecUtil.DEFAULT_CHARSET);
}
@Override
public String getString(Charset encoding) {
if (channelBuffer == null) {
return "";
}
if (encoding == null) {
return getString(HttpCodecUtil.DEFAULT_CHARSET);
}
return channelBuffer.toString(encoding);
}
/**
* Utility to go from a In Memory FileUpload
* to a Disk (or another implementation) FileUpload
* @return the attached ChannelBuffer containing the actual bytes
*/
@Override
public ChannelBuffer getChannelBuffer() {
return channelBuffer;
}
@Override
public ChannelBuffer getChunk(int length) throws IOException {
if (channelBuffer == null || length == 0 || channelBuffer.readableBytes() == 0) {
chunkPosition = 0;
return ChannelBuffers.EMPTY_BUFFER;
}
int sizeLeft = channelBuffer.readableBytes() - chunkPosition;
if (sizeLeft == 0) {
chunkPosition = 0;
return ChannelBuffers.EMPTY_BUFFER;
}
int sliceLength = length;
if (sizeLeft < length) {
sliceLength = sizeLeft;
}
ChannelBuffer chunk = channelBuffer.slice(chunkPosition, sliceLength);
chunkPosition += sliceLength;
return chunk;
}
@Override
public boolean isInMemory() {
return true;
}
@Override
public boolean renameTo(File dest) throws IOException {
if (dest == null) {
throw new NullPointerException("dest");
}
if (channelBuffer == null) {
// empty file
dest.createNewFile();
isRenamed = true;
return true;
}
int length = channelBuffer.readableBytes();
FileOutputStream outputStream = new FileOutputStream(dest);
FileChannel fileChannel = outputStream.getChannel();
ByteBuffer byteBuffer = channelBuffer.toByteBuffer();
int written = 0;
while (written < length) {
written += fileChannel.write(byteBuffer);
fileChannel.force(false);
}
fileChannel.close();
isRenamed = true;
return written == length;
}
@Override
public File getFile() throws IOException {
throw new IOException("Not represented by a file");
}
}