Revision: 2800
http://archive-access.svn.sourceforge.net/archive-access/?rev=2800&view=rev
Author: binzino
Date: 2009-08-20 21:03:30 +0000 (Thu, 20 Aug 2009)
Log Message:
-----------
Fix WAX-62. Add CacheSettingsFilter class to set "Cache-Control" HTTP response header, as well as set the "Date" header.
Added Paths:
-----------
tags/nutchwax-0_12_8/archive/src/java/org/archive/nutchwax/CacheSettingsFilter.java
Added: tags/nutchwax-0_12_8/archive/src/java/org/archive/nutchwax/CacheSettingsFilter.java
===================================================================
--- tags/nutchwax-0_12_8/archive/src/java/org/archive/nutchwax/CacheSettingsFilter.java (rev 0)
+++ tags/nutchwax-0_12_8/archive/src/java/org/archive/nutchwax/CacheSettingsFilter.java 2009-08-20 21:03:30 UTC (rev 2800)
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2008 Internet Archive.
+ *
+ * This file is part of the archive-access tools project
+ * (http://sourceforge.net/projects/archive-access).
+ *
+ * The archive-access tools are free software; you can redistribute them and/or
+ * modify them under the terms of the GNU Lesser Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or any
+ * later version.
+ *
+ * The archive-access tools are distributed in the hope that they will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+ * Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser Public License along with
+ * the archive-access tools; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+package org.archive.nutchwax;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.PrintWriter;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpServletResponseWrapper;
+
+import javax.xml.transform.Source;
+import javax.xml.transform.stream.StreamSource;
+import javax.xml.transform.Templates;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.stream.StreamResult;
+
+
+public class CacheSettingsFilter implements Filter
+{
+ private String maxAge;
+
+ public void init( FilterConfig config )
+ throws ServletException
+ {
+ this.maxAge = config.getInitParameter( "max-age" );
+
+ if ( this.maxAge != null )
+ {
+ this.maxAge = this.maxAge.trim( );
+
+ if ( this.maxAge.length( ) == 0 )
+ {
+ this.maxAge = null;
+ }
+ else
+ {
+ this.maxAge = "max-age=" + this.maxAge;
+ }
+ }
+ }
+
+ public void doFilter( ServletRequest request, ServletResponse response, FilterChain chain )
+ throws IOException, ServletException
+ {
+ HttpServletResponse res = (HttpServletResponse) response;
+
+ res.setDateHeader( "Date", System.currentTimeMillis( ) );
+
+ if ( this.maxAge != null )
+ {
+ res.addHeader( "Cache-Control", this.maxAge );
+ }
+
+ chain.doFilter( request, res );
+ }
+
+ public void destroy()
+ {
+
+ }
+
+}
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