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The Netty project is an effort to provide an asynchronous event-driven
network application framework and tools for rapid development of
maintainable high performance and high scalability protocol servers and
clients. In other words, Netty is a NIO client server framework which
enables quick and easy development of network applications such as protocol
servers and clients. It greatly simplifies and streamlines network
programming such as TCP and UDP socket server.
/*
* Copyright 2012 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 org.jboss.netty.handler.codec.http.multipart;
import org.jboss.netty.handler.codec.http.HttpRequest;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Default factory giving Attribute and FileUpload according to constructor
*
* Attribute and FileUpload could be :
* - MemoryAttribute, DiskAttribute or MixedAttribute
* - MemoryFileUpload, DiskFileUpload or MixedFileUpload
* according to the constructor.
*/
public class DefaultHttpDataFactory implements HttpDataFactory {
/**
* Proposed default MINSIZE as 16 KB.
*/
public static final long MINSIZE = 0x4000;
/**
* Proposed default MAXSIZE = -1 as UNLIMITED
*/
public static final long MAXSIZE = -1;
private final boolean useDisk;
private final boolean checkSize;
private long minSize;
private long maxSize = MAXSIZE;
/**
* Keep all HttpDatas until cleanAllHttpDatas() is called.
*/
private final Map> requestFileDeleteMap =
new ConcurrentHashMap>();
/**
* HttpData will be in memory if less than default size (16KB). No limit setup.
* The type will be Mixed.
*/
public DefaultHttpDataFactory() {
useDisk = false;
checkSize = true;
minSize = MINSIZE;
}
/**
* HttpData will be always on Disk if useDisk is True, else always in Memory if False.
* No limit setup.
*/
public DefaultHttpDataFactory(boolean useDisk) {
this.useDisk = useDisk;
checkSize = false;
}
/**
* HttpData will be on Disk if the size of the file is greater than minSize, else it
* will be in memory. The type will be Mixed. No limit setup.
*/
public DefaultHttpDataFactory(long minSize) {
useDisk = false;
checkSize = true;
this.minSize = minSize;
}
public void setMaxLimit(long max) {
this.maxSize = max;
}
/**
* @return the associated list of Files for the request
*/
private List getList(HttpRequest request) {
List list = requestFileDeleteMap.get(request);
if (list == null) {
list = new ArrayList();
requestFileDeleteMap.put(request, list);
}
return list;
}
public Attribute createAttribute(HttpRequest request, String name) {
if (useDisk) {
Attribute attribute = new DiskAttribute(name);
attribute.setMaxSize(maxSize);
List fileToDelete = getList(request);
fileToDelete.add(attribute);
return attribute;
}
if (checkSize) {
Attribute attribute = new MixedAttribute(name, minSize);
attribute.setMaxSize(maxSize);
List fileToDelete = getList(request);
fileToDelete.add(attribute);
return attribute;
}
MemoryAttribute attribute = new MemoryAttribute(name);
attribute.setMaxSize(maxSize);
return attribute;
}
/**
* Utility method
* @param data
*/
private void checkHttpDataSize(HttpData data) {
try {
data.checkSize(data.length());
} catch (IOException e) {
throw new IllegalArgumentException("Attribute bigger than maxSize allowed");
}
}
public Attribute createAttribute(HttpRequest request, String name, String value) {
if (useDisk) {
Attribute attribute;
try {
attribute = new DiskAttribute(name, value);
attribute.setMaxSize(maxSize);
} catch (IOException e) {
// revert to Mixed mode
attribute = new MixedAttribute(name, value, minSize);
attribute.setMaxSize(maxSize);
}
checkHttpDataSize(attribute);
List fileToDelete = getList(request);
fileToDelete.add(attribute);
return attribute;
}
if (checkSize) {
Attribute attribute = new MixedAttribute(name, value, minSize);
attribute.setMaxSize(maxSize);
checkHttpDataSize(attribute);
List fileToDelete = getList(request);
fileToDelete.add(attribute);
return attribute;
}
try {
MemoryAttribute attribute = new MemoryAttribute(name, value);
attribute.setMaxSize(maxSize);
checkHttpDataSize(attribute);
return attribute;
} catch (IOException e) {
throw new IllegalArgumentException(e);
}
}
public FileUpload createFileUpload(HttpRequest request, String name, String filename,
String contentType, String contentTransferEncoding, Charset charset,
long size) {
if (useDisk) {
FileUpload fileUpload = new DiskFileUpload(name, filename, contentType,
contentTransferEncoding, charset, size);
fileUpload.setMaxSize(maxSize);
checkHttpDataSize(fileUpload);
List fileToDelete = getList(request);
fileToDelete.add(fileUpload);
return fileUpload;
}
if (checkSize) {
FileUpload fileUpload = new MixedFileUpload(name, filename, contentType,
contentTransferEncoding, charset, size, minSize);
fileUpload.setMaxSize(maxSize);
checkHttpDataSize(fileUpload);
List fileToDelete = getList(request);
fileToDelete.add(fileUpload);
return fileUpload;
}
MemoryFileUpload fileUpload = new MemoryFileUpload(name, filename, contentType,
contentTransferEncoding, charset, size);
fileUpload.setMaxSize(maxSize);
checkHttpDataSize(fileUpload);
return fileUpload;
}
public void removeHttpDataFromClean(HttpRequest request, InterfaceHttpData data) {
if (data instanceof HttpData) {
List fileToDelete = getList(request);
fileToDelete.remove(data);
}
}
public void cleanRequestHttpDatas(HttpRequest request) {
List fileToDelete = requestFileDeleteMap.remove(request);
if (fileToDelete != null) {
for (HttpData data: fileToDelete) {
data.delete();
}
fileToDelete.clear();
}
}
public void cleanAllHttpDatas() {
for (HttpRequest request : requestFileDeleteMap.keySet()) {
List fileToDelete = requestFileDeleteMap.get(request);
if (fileToDelete != null) {
for (HttpData data: fileToDelete) {
data.delete();
}
fileToDelete.clear();
}
requestFileDeleteMap.remove(request);
}
}
}