enable gzip compression

scm-webapp/src/main/java/sonia/scm/ScmServletModule.java

@@ -83,6 +83,7 @@ import java.util.Map;
 import java.util.Set;
 
 import javax.xml.bind.JAXB;
+import sonia.scm.filter.GZipFilter;
 
 /**
  *
@@ -182,9 +183,8 @@ public class ScmServletModule extends ServletModule
     /*
      * filter(PATTERN_PAGE,
      *      PATTERN_STATIC_RESOURCES).through(StaticResourceFilter.class);
-     * filter(PATTERN_PAGE, PATTERN_COMPRESSABLE).through(GZipFilter.class);
-     * filter(PATTERN_RESTAPI).through(SecurityFilter.class);
      */
+    filter(PATTERN_PAGE, PATTERN_COMPRESSABLE).through(GZipFilter.class);
     filter(PATTERN_RESTAPI, PATTERN_DEBUG).through(SecurityFilter.class);
 
     // debug servlet

scm-webapp/src/main/java/sonia/scm/filter/GZipResponseStream.java

@@ -29,8 +29,14 @@
  *
  */
 
+
+
 package sonia.scm.filter;
 
+//~--- non-JDK imports --------------------------------------------------------
+
+import sonia.scm.util.IOUtil;
+
 //~--- JDK imports ------------------------------------------------------------
 
 import java.io.ByteArrayOutputStream;
@@ -86,11 +92,19 @@ public class GZipResponseStream extends ServletOutputStream
 
     byte[] bytes = baos.toByteArray();
 
-    response.addHeader("Content-Length", Integer.toString(bytes.length));
+    response.addIntHeader("Content-Length", bytes.length);
     response.addHeader("Content-Encoding", "gzip");
+
+    try
+    {
       output.write(bytes);
       output.flush();
-    output.close();
+    }
+    finally
+    {
+      IOUtil.close(output);
+    }
+
     closed = true;
   }
 
@@ -102,7 +116,7 @@ public class GZipResponseStream extends ServletOutputStream
    */
   public boolean closed()
   {
-    return (this.closed);
+    return closed;
   }
 
   /**
@@ -186,6 +200,19 @@ public class GZipResponseStream extends ServletOutputStream
     gzipstream.write(b, off, len);
   }
 
+  //~--- get methods ----------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  public boolean isClosed()
+  {
+    return closed;
+  }
+
   //~--- fields ---------------------------------------------------------------
 
   /** Field description */

scm-webapp/src/main/java/sonia/scm/filter/GZipResponseWrapper.java

@@ -29,12 +29,13 @@
  *
  */
 
+
+
 package sonia.scm.filter;
 
 //~--- non-JDK imports --------------------------------------------------------
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import sonia.scm.util.IOUtil;
 
 //~--- JDK imports ------------------------------------------------------------
 
@@ -53,12 +54,6 @@ import javax.servlet.http.HttpServletResponseWrapper;
 public class GZipResponseWrapper extends HttpServletResponseWrapper
 {
 
-  /** Field description */
-  private static final Logger logger =
-    LoggerFactory.getLogger(GZipResponseWrapper.class);
-
-  //~--- constructors ---------------------------------------------------------
-
   /**
    * Constructs ...
    *
@@ -73,42 +68,17 @@ public class GZipResponseWrapper extends HttpServletResponseWrapper
 
   //~--- methods --------------------------------------------------------------
 
-  /**
-   * Method description
-   *
-   *
-   * @return
-   *
-   * @throws IOException
-   */
-  public ServletOutputStream createOutputStream() throws IOException
-  {
-    return (new GZipResponseStream(origResponse));
-  }
-
   /**
    * Method description
    *
    */
   public void finishResponse()
   {
-    try
+    IOUtil.close(writer);
+
+    if ((stream != null) &&!stream.isClosed())
     {
-      if (writer != null)
-      {
-        writer.close();
-      }
-      else
-      {
-        if (stream != null)
-        {
-          stream.close();
-        }
-      }
-    }
-    catch (IOException ex)
-    {
-      logger.error(ex.getMessage(), ex);
+      IOUtil.close(stream);
     }
   }
 
@@ -147,7 +117,7 @@ public class GZipResponseWrapper extends HttpServletResponseWrapper
       stream = createOutputStream();
     }
 
-    return (stream);
+    return stream;
   }
 
   /**
@@ -163,7 +133,7 @@ public class GZipResponseWrapper extends HttpServletResponseWrapper
   {
     if (writer != null)
     {
-      return (writer);
+      return writer;
     }
 
     if (stream != null)
@@ -175,7 +145,7 @@ public class GZipResponseWrapper extends HttpServletResponseWrapper
     stream = createOutputStream();
     writer = new PrintWriter(new OutputStreamWriter(stream, "UTF-8"));
 
-    return (writer);
+    return writer;
   }
 
   //~--- set methods ----------------------------------------------------------
@@ -189,13 +159,28 @@ public class GZipResponseWrapper extends HttpServletResponseWrapper
   @Override
   public void setContentLength(int length) {}
 
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   *
+   * @throws IOException
+   */
+  private GZipResponseStream createOutputStream() throws IOException
+  {
+    return new GZipResponseStream(origResponse);
+  }
+
   //~--- fields ---------------------------------------------------------------
 
   /** Field description */
   protected HttpServletResponse origResponse = null;
 
   /** Field description */
-  protected ServletOutputStream stream = null;
+  protected GZipResponseStream stream = null;
 
   /** Field description */
   protected PrintWriter writer = null;