310431 Default ErrorHandler as server Bean

git-svn-id: svn+ssh://dev.eclipse.org/svnroot/rt/org.eclipse.jetty/jetty/trunk@1566 7e9141cc-0065-0410-87d8-b60c137991c4

VERSION.txt

@@ -12,6 +12,7 @@ jetty-7.1.0-SNAPSHOT
  + 309765 Added JSP module
  + 310051 _configurationClasses now defaults to null in WebAppContext
  + 310094 Improved start.jar usage and config files
+ + 310431 Default ErrorHandler as server Bean
  + JETTY-903 Stop both caches
  + JETTY-1200 SSL NIO Endpoint wraps non NIO buffers
  + JETTY-1202 Use platform default algorithm for SecureRandom

jetty-deploy/src/test/java/org/eclipse/jetty/deploy/test/XmlConfiguredJetty.java

@@ -261,9 +261,7 @@ public class XmlConfiguredJetty
 
     public DeploymentManager getActiveDeploymentManager()
     {
-        List<DeploymentManager> depmans = server.getBeans(DeploymentManager.class);
-        Assert.assertEquals("DeploymentManager bean count",1,depmans.size());
-        return depmans.get(0);
+        return server.getBean(DeploymentManager.class);
     }
 
     public File getJettyDir(String name)

jetty-security/src/main/java/org/eclipse/jetty/security/SecurityHandler.java

@@ -256,15 +256,13 @@ public abstract class SecurityHandler extends HandlerWrapper implements Authenti
     /* ------------------------------------------------------------ */
     protected IdentityService findIdentityService()
     {
-        List<IdentityService> services = getServer().getBeans(IdentityService.class);
-        if (services!=null && services.size()>0)
-            return services.get(0);
-        return null;
+        return getServer().getBean(IdentityService.class);
     }
     
     /* ------------------------------------------------------------ */
     /** 
      */
+    @Override
     protected void doStart()
         throws Exception
     {
@@ -354,6 +352,7 @@ public abstract class SecurityHandler extends HandlerWrapper implements Authenti
         
     }
 
+    /* ------------------------------------------------------------ */
     protected boolean checkSecurity(Request request)
     {
         switch(request.getDispatcherType())

jetty-server/src/main/java/org/eclipse/jetty/server/Response.java

@@ -17,6 +17,7 @@ import java.io.IOException;
 import java.io.PrintWriter;
 import java.util.Collections;
 import java.util.Enumeration;
+import java.util.List;
 import java.util.Locale;
 
 import javax.servlet.ServletOutputStream;
@@ -288,14 +289,14 @@ public class Response implements HttpServletResponse
             ContextHandler.Context context = request.getContext();
             if (context!=null)
                 error_handler=context.getContextHandler().getErrorHandler();
+            if (error_handler==null)
+                error_handler = _connection.getConnector().getServer().getBean(ErrorHandler.class);
             if (error_handler!=null)
             {
-                // TODO - probably should reset these after the request?
                 request.setAttribute(Dispatcher.ERROR_STATUS_CODE,new Integer(code));
                 request.setAttribute(Dispatcher.ERROR_MESSAGE, message);
                 request.setAttribute(Dispatcher.ERROR_REQUEST_URI, request.getRequestURI());
                 request.setAttribute(Dispatcher.ERROR_SERVLET_NAME,request.getServletName());
-
                 error_handler.handle(null,_connection.getRequest(),_connection.getRequest(),this );
             }
             else

jetty-server/src/main/java/org/eclipse/jetty/server/Server.java

@@ -14,15 +14,11 @@
 package org.eclipse.jetty.server;
 
 import java.io.IOException;
-import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Enumeration;
 import java.util.Iterator;
 import java.util.List;
 import java.util.ListIterator;
-import java.util.Set;
-import java.util.concurrent.CopyOnWriteArraySet;
-
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -499,6 +495,34 @@ public class Server extends HandlerWrapper implements Attributes
         return beans;
     }
     
+    /* ------------------------------------------------------------ */
+    /** Get dependent bean of a specific class.
+     * If more than one bean of the type exist, the first is returned.
+     * @see #addBean(Object)
+     * @param clazz
+     * @return bean or null
+     */
+    public <T> T getBean(Class<T> clazz)
+    {
+        Iterator<?> iter = _dependentBeans.iterator();
+        T t=null;
+        int count=0;
+        while (iter.hasNext())
+        {
+            Object o = iter.next();
+            if (clazz.isInstance(o))
+            {
+                count++;
+                if (t==null)
+                    t=(T)o;
+            }
+        }
+        if (count>1)
+            Log.debug("getBean({}) 1 of {}",clazz.getName(),count);
+        
+        return t;
+    }
+    
     /**
      * Remove a LifeCycle object to be started/stopped 
      * along with the Server

jetty-server/src/main/java/org/eclipse/jetty/server/handler/ContextHandler.java

@@ -578,14 +578,9 @@ public class ContextHandler extends ScopedHandler implements Attributes, Server.
             old_context=__context.get();
             __context.set(_scontext);
 
-            if (_errorHandler==null)
-                setErrorHandler(new ErrorHandler());
-
-
             // defers the calling of super.doStart()
             startContext();
 
-
             _availability=_shutdown?__SHUTDOWN:_available?__AVAILABLE:__UNAVAILABLE;
         }
         finally

jetty-server/src/main/java/org/eclipse/jetty/server/handler/ErrorHandler.java

@@ -27,13 +27,11 @@ import org.eclipse.jetty.server.HttpConnection;
 import org.eclipse.jetty.server.Request;
 import org.eclipse.jetty.util.ByteArrayISO8859Writer;
 
-
 /* ------------------------------------------------------------ */
 /** Handler for Error pages
- * A handler that is registered at the org.eclipse.http.ErrorHandler
- * context attributed and called by the HttpResponse.sendError method to write a
- * error page.
- * 
+ * An ErrorHandler is registered with {@link ContextHandler#setErrorHandler(ErrorHandler)} or 
+ * {@link org.eclipse.jetty.server.Server#addBean(Object)}.   
+ * It is called by the HttpResponse.sendError method to write a error page.
  * 
  */
 public class ErrorHandler extends AbstractHandler

jetty-servlet/src/main/java/org/eclipse/jetty/servlet/ServletContextHandler.java

@@ -113,7 +113,6 @@ public class ServletContextHandler extends ContextHandler
         else if (parent instanceof HandlerCollection)
             ((HandlerCollection)parent).addHandler(this);
     }    
-
     
     /* ------------------------------------------------------------ */
     /** Get the defaultSecurityHandlerClass.

test-jetty-servlet/src/main/java/org/eclipse/jetty/testing/ServletTester.java

@@ -21,6 +21,7 @@ import org.eclipse.jetty.io.ByteArrayBuffer;
 import org.eclipse.jetty.server.LocalConnector;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.server.bio.SocketConnector;
+import org.eclipse.jetty.server.handler.ErrorHandler;
 import org.eclipse.jetty.server.nio.SelectChannelConnector;
 import org.eclipse.jetty.servlet.FilterHolder;
 import org.eclipse.jetty.servlet.ServletContextHandler;
@@ -60,6 +61,7 @@ public class ServletTester
     {
         try
         {
+            _server.addBean(new ErrorHandler());
             _server.setSendServerVersion(false);
             _server.addConnector(_connector);
             _server.setHandler(_context);

test-jetty-servlet/src/test/java/org/eclipse/jetty/testing/ServletTest.java

@@ -253,6 +253,8 @@ public class ServletTest extends TestCase
         out.put(request0.getBytes("iso8859-1"));
         String responses = tester.getResponses(out).toString();
         
+        System.err.println(responses);
+        
         int offset = responses.indexOf("HTTP/1.1 500");
         assertTrue(offset>=0);
         offset = responses.indexOf("Content-Length: ",offset);