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package com.sun.grizzly.tcp;
import com.sun.grizzly.util.buf.MessageBytes;
import com.sun.grizzly.util.buf.ByteChunk;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.logging.Level;
import java.util.Date;
import java.util.Locale;
import java.text.SimpleDateFormat;
import java.text.ParseException;
/**
* Abstract Adapter that contains all the common behaviour of the Adapter implmentation
* for standalone usage as well as embedded use.
*
* @author Jerome Dochez
* @author Jean-Francois Arcand
*/
abstract public class DynamicContentAdapter extends StaticResourcesAdapter {
private final static int MAX_POST_SIZE = 48 * 1024;
protected static final String RFC_2616_FORMAT = "EEE, d MMM yyyy HH:mm:ss z";
protected String contextRoot = null;
public DynamicContentAdapter() {
super();
}
public DynamicContentAdapter(String publicDirectory) {
super(publicDirectory);
}
abstract protected int getTokenID();
abstract protected void serviceDynamicContent(Request req, Response res) throws IOException;
@Override
public void afterService(Request req, Response res) throws Exception {
; // Let the Adapter handle the life cycle of the request/response.
}
@Override
public void fireAdapterEvent(String type, Object data) {
; // Let the Adapter handle the life cycle of the request/response.
}
private boolean modifiedSince(Request req, File file) {
try {
String since = req.getMimeHeaders().getHeader("If-Modified-Since");
if (since == null) {
return false;
}
Date date = new SimpleDateFormat(RFC_2616_FORMAT, Locale.US).parse(since);
if (date.getTime() > file.lastModified()) {
return true;
} else {
return false;
}
} catch (ParseException e) {
return false;
}
}
public void service(Request req, Response res) throws Exception {
MessageBytes mb = req.requestURI();
ByteChunk requestURI = mb.getByteChunk();
try{
String uri = requestURI.toString();
if (contextRoot!=null && requestURI.startsWith(contextRoot)) {
uri = uri.substring(contextRoot.length());
}
File file = new File(getRootFolder(),uri);
if (file.isDirectory()) {
uri += "index.html";
file = new File(file,uri);
}
if (file.canRead()) {
super.service(uri, req, res);
return;
} else {
serviceDynamicContent(req, res);
}
} catch (Exception e) {
if (getLogger().isLoggable(Level.SEVERE)) {
getLogger().log(Level.SEVERE, e.getMessage());
}
throw e;
}
}
/**
* Simple InputStream that wrap the Grizzly internal object.
*/
private class GrizzlyInputStream extends InputStream {
public RequestTupple rt;
public int read() throws IOException {
return rt.readChunk.substract();
}
public int read(byte[] b) throws IOException {
return read(b,0,b.length);
}
public int read(byte[] b, int off, int len) throws IOException {
return rt.readChunk.substract(b,off,len);
}
}
/**
* Statefull token used to share information with the Containers.
*/
public class RequestTupple implements ByteChunk.ByteInputChannel{
public ByteChunk readChunk;
public Request req;
public GrizzlyInputStream inputStream;
public RequestTupple(){
readChunk = new ByteChunk();
readChunk.setByteInputChannel(this);
readChunk.setBytes(new byte[MAX_POST_SIZE],0,MAX_POST_SIZE);
inputStream = new GrizzlyInputStream();
inputStream.rt = this;
}
public int realReadBytes(byte[] b, int off, int len) throws IOException {
req.doRead(readChunk);
return readChunk.substract(b,off,len);
}
public void recycle(){
req = null;
readChunk.recycle();
}
}
public void setContextRoot(String contextRoot) {
this.contextRoot = contextRoot;
}
public String getContextRoot() {
return contextRoot;
}
}