allow parameter evaluation in j2html resources

net-http-j2html/src/main/java/org/xbib/net/http/j2html/BadRequestHandler.java

@@ -0,0 +1,41 @@
+package org.xbib.net.http.j2html;
+
+import org.xbib.net.ParameterException;
+import org.xbib.net.Resource;
+import org.xbib.net.http.HttpResponseStatus;
+import org.xbib.net.http.server.resource.HtmlTemplateResourceHandler;
+import org.xbib.net.http.server.route.HttpRouterContext;
+
+import java.io.IOException;
+
+import static org.xbib.j2html.TagCreator.body;
+import static org.xbib.j2html.TagCreator.h1;
+import static org.xbib.j2html.TagCreator.html;
+
+public class BadRequestHandler extends J2HtmlResourceHandler {
+
+    @Override
+    protected Resource createResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException {
+        return new UnauthorizedResource(this, httpRouterContext);
+    }
+
+    protected static class UnauthorizedResource extends J2HtmlResource {
+
+        protected UnauthorizedResource(HtmlTemplateResourceHandler templateResourceHandler,
+                                       HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
+            super(templateResourceHandler, httpRouterContext);
+        }
+
+        @Override
+        protected HttpResponseStatus getResponseStatus() {
+            return HttpResponseStatus.BAD_REQUEST;
+        }
+
+        @Override
+        protected String renderHtml(HttpRouterContext httpRouterContext) {
+            return html(body(h1("Bad request"))).render();
+        }
+    }
+}

net-http-j2html/src/main/java/org/xbib/net/http/j2html/InternalServerErrorHandler.java

@@ -1,6 +1,7 @@
 package org.xbib.net.http.j2html;
 
 import org.xbib.net.Attributes;
+import org.xbib.net.ParameterException;
 import org.xbib.net.Resource;
 import org.xbib.net.http.HttpResponseStatus;
 import org.xbib.net.http.server.resource.HtmlTemplateResourceHandler;
@@ -19,14 +20,16 @@ import static org.xbib.j2html.TagCreator.pre;
 public class InternalServerErrorHandler extends J2HtmlResourceHandler {
 
     @Override
-    protected Resource createResource(HttpRouterContext httpRouterContext) throws IOException {
+    protected Resource createResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException {
         return new InternalServerErrorResource(this, httpRouterContext);
     }
 
     protected static class InternalServerErrorResource extends J2HtmlResource {
 
         protected InternalServerErrorResource(HtmlTemplateResourceHandler templateResourceHandler,
-                                              HttpRouterContext httpRouterContext) throws IOException {
+                                              HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
             super(templateResourceHandler, httpRouterContext);
         }
 

net-http-j2html/src/main/java/org/xbib/net/http/j2html/J2HtmlResource.java

@@ -1,6 +1,8 @@
 package org.xbib.net.http.j2html;
 
+import org.xbib.net.ParameterException;
 import org.xbib.net.buffer.DataBuffer;
+import org.xbib.net.http.HttpHeaderValues;
 import org.xbib.net.http.HttpResponseStatus;
 import org.xbib.net.http.server.HttpRequest;
 import org.xbib.net.http.server.resource.HtmlTemplateResource;
@@ -11,6 +13,8 @@ import java.io.IOException;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.Objects;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import static org.xbib.j2html.TagCreator.body;
 import static org.xbib.j2html.TagCreator.document;
@@ -20,15 +24,19 @@ import static org.xbib.net.http.HttpHeaderNames.CONTENT_TYPE;
 
 public class J2HtmlResource extends HtmlTemplateResource {
 
+    private static final Logger logger = Logger.getLogger(J2HtmlResource.class.getName());
+
     protected HttpRequest request;
 
     public J2HtmlResource(HtmlTemplateResourceHandler templateResourceHandler,
-                          HttpRouterContext httpRouterContext) throws IOException {
+                          HttpRouterContext httpRouterContext) throws IOException, ParameterException {
         super(templateResourceHandler, httpRouterContext);
     }
 
     @Override
-    public void render(HttpRouterContext context) throws IOException {
+    public void render(HttpRouterContext context)
+            throws IOException {
+        try {
             this.request = context.getRequest();
             Objects.requireNonNull(responseBuilder);
             DataBuffer dataBuffer = context.getDataBufferFactory().allocateBuffer();
@@ -43,6 +51,13 @@ public class J2HtmlResource extends HtmlTemplateResource {
                     .setHeader(CONTENT_TYPE, "text/html; charset=" + getCharset().displayName())
                     .body(dataBuffer)
                     .done();
+        } catch (ParameterException e) {
+            logger.log(Level.WARNING, e.getMessage(), e);
+            context.status(HttpResponseStatus.BAD_REQUEST)
+                    .setHeader(CONTENT_TYPE, HttpHeaderValues.TEXT_PLAIN)
+                    .body(e.getMessage())
+                    .done();
+        }
     }
 
     protected HttpResponseStatus getResponseStatus() {
@@ -54,14 +69,14 @@ public class J2HtmlResource extends HtmlTemplateResource {
     }
 
     /**
-     * Rendering.
      * By subclassing this handler, this method should be overridden by custom j2html code.
      * The HTML is here is just a greeting as an example.
      *
      * @param context the router context
      * @return the body string fo the HTTP response
      */
-    protected String renderHtml(HttpRouterContext context) {
+    protected String renderHtml(HttpRouterContext context)
+        throws IOException, ParameterException {
         return document(html(body(h1("Hello World"))));
     }
 }

net-http-j2html/src/main/java/org/xbib/net/http/j2html/J2HtmlResourceHandler.java

@@ -1,5 +1,6 @@
 package org.xbib.net.http.j2html;
 
+import org.xbib.net.ParameterException;
 import org.xbib.net.Resource;
 import org.xbib.net.http.server.resource.HtmlTemplateResourceHandler;
 import org.xbib.net.http.server.route.HttpRouterContext;
@@ -7,9 +8,6 @@ import org.xbib.net.http.server.route.HttpRouterContext;
 import java.io.IOException;
 import java.nio.file.Path;
 
-import static org.xbib.j2html.TagCreator.body;
-import static org.xbib.j2html.TagCreator.h1;
-
 public class J2HtmlResourceHandler extends HtmlTemplateResourceHandler {
 
     public J2HtmlResourceHandler() {
@@ -21,13 +19,15 @@ public class J2HtmlResourceHandler extends HtmlTemplateResourceHandler {
     }
 
     @Override
-    protected Resource createResource(HttpRouterContext httpRouterContext) throws IOException {
+    protected Resource createResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException {
         return httpRouterContext.isAuthenticated() ?
                 new J2HtmlResource(this, httpRouterContext) :
                 createUnauthenticatedResource(httpRouterContext);
     }
 
-    protected Resource createUnauthenticatedResource(HttpRouterContext httpRouterContext) throws IOException {
+    protected Resource createUnauthenticatedResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException {
         return new J2HtmlResource(this, httpRouterContext);
     }
 }

net-http-j2html/src/main/java/org/xbib/net/http/j2html/NotFoundHandler.java

@@ -1,5 +1,6 @@
 package org.xbib.net.http.j2html;
 
+import org.xbib.net.ParameterException;
 import org.xbib.net.Resource;
 import org.xbib.net.http.HttpResponseStatus;
 import org.xbib.net.http.server.resource.HtmlTemplateResourceHandler;
@@ -14,14 +15,16 @@ import static org.xbib.j2html.TagCreator.html;
 public class NotFoundHandler extends J2HtmlResourceHandler {
 
     @Override
-    protected Resource createResource(HttpRouterContext httpRouterContext) throws IOException {
+    protected Resource createResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException {
         return new UnauthorizedResource(this, httpRouterContext);
     }
 
     protected static class UnauthorizedResource extends J2HtmlResource {
 
         protected UnauthorizedResource(HtmlTemplateResourceHandler templateResourceHandler,
-                                       HttpRouterContext httpRouterContext) throws IOException {
+                                       HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
             super(templateResourceHandler, httpRouterContext);
         }
 

net-http-j2html/src/main/java/org/xbib/net/http/j2html/UnauthorizedHandler.java

@@ -1,5 +1,6 @@
 package org.xbib.net.http.j2html;
 
+import org.xbib.net.ParameterException;
 import org.xbib.net.Resource;
 import org.xbib.net.http.HttpResponseStatus;
 import org.xbib.net.http.server.resource.HtmlTemplateResourceHandler;
@@ -14,14 +15,16 @@ import static org.xbib.j2html.TagCreator.html;
 public class UnauthorizedHandler extends J2HtmlResourceHandler {
 
     @Override
-    protected Resource createResource(HttpRouterContext httpRouterContext) throws IOException {
+    protected Resource createResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException {
         return new UnauthorizedResource(this, httpRouterContext);
     }
 
     protected static class UnauthorizedResource extends J2HtmlResource {
 
         protected UnauthorizedResource(HtmlTemplateResourceHandler templateResourceHandler,
-                                       HttpRouterContext httpRouterContext) throws IOException {
+                                       HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
             super(templateResourceHandler, httpRouterContext);
         }
 

net-http-server-application-web/src/main/java/org/xbib/net/http/server/application/web/j2html/Bootstrap.java

@@ -5,15 +5,19 @@ import org.xbib.config.ConfigLogger;
 import org.xbib.config.ConfigParams;
 import org.xbib.config.SystemConfigLogger;
 import org.xbib.net.NetworkClass;
+import org.xbib.net.ParameterException;
 import org.xbib.net.Resource;
 import org.xbib.net.http.HttpHeaderNames;
 import org.xbib.net.http.HttpHeaderValues;
 import org.xbib.net.http.HttpResponseStatus;
 import org.xbib.net.http.HttpVersion;
+import org.xbib.net.http.j2html.BadRequestHandler;
 import org.xbib.net.http.j2html.InternalServerErrorHandler;
 import org.xbib.net.http.j2html.J2HtmlResource;
 import org.xbib.net.http.j2html.J2HtmlResourceHandler;
 import org.xbib.net.http.j2html.J2HtmlService;
+import org.xbib.net.http.j2html.NotFoundHandler;
+import org.xbib.net.http.j2html.UnauthorizedHandler;
 import org.xbib.net.http.server.application.web.WebApplication;
 import org.xbib.net.http.server.auth.BasicAuthenticationHandler;
 import org.xbib.net.http.server.auth.FormAuthenticationHandler;
@@ -141,6 +145,9 @@ public final class Bootstrap {
                 .build();
 
         HttpRouter httpRouter = BaseHttpRouter.builder()
+                .setHandler(401, new UnauthorizedHandler())
+                .setHandler(403, new BadRequestHandler())
+                .setHandler(404, new NotFoundHandler())
                 .setHandler(500, new InternalServerErrorHandler())
                 .addDomain(BaseHttpDomain.builder()
                         .setHttpAddress(httpsAddress)
@@ -206,12 +213,14 @@ public final class Bootstrap {
     static class MyResourceHandler extends J2HtmlResourceHandler {
 
         @Override
-        protected Resource createResource(HttpRouterContext httpRouterContext) throws IOException {
+        protected Resource createResource(HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
             return new DemoResource(this, httpRouterContext);
         }
 
         @Override
-        protected Resource createUnauthenticatedResource(HttpRouterContext httpRouterContext) throws IOException {
+        protected Resource createUnauthenticatedResource(HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
             return new UnauthenticatedDemoResource(this, httpRouterContext);
         }
     }
@@ -219,7 +228,8 @@ public final class Bootstrap {
     static class DemoResource extends J2HtmlResource {
 
         public DemoResource(HtmlTemplateResourceHandler templateResourceHandler,
-                            HttpRouterContext httpRouterContext) throws IOException {
+                            HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
             super(templateResourceHandler, httpRouterContext);
         }
 
@@ -233,7 +243,8 @@ public final class Bootstrap {
     static class UnauthenticatedDemoResource extends J2HtmlResource {
 
         public UnauthenticatedDemoResource(HtmlTemplateResourceHandler templateResourceHandler,
-                            HttpRouterContext httpRouterContext) throws IOException {
+                            HttpRouterContext httpRouterContext)
+                throws IOException, ParameterException {
             super(templateResourceHandler, httpRouterContext);
         }
 

net-http-server/src/main/java/org/xbib/net/http/server/resource/AbstractResourceHandler.java

@@ -18,12 +18,15 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+
+import org.xbib.net.ParameterException;
 import org.xbib.net.Resource;
 import org.xbib.net.URL;
 import org.xbib.net.buffer.DataBuffer;
 import org.xbib.net.buffer.DataBufferFactory;
 import org.xbib.net.buffer.DataBufferUtil;
 import org.xbib.net.http.HttpHeaderNames;
+import org.xbib.net.http.HttpHeaderValues;
 import org.xbib.net.http.HttpHeaders;
 import org.xbib.net.http.HttpMethod;
 import org.xbib.net.http.HttpResponseStatus;
@@ -44,7 +47,8 @@ public abstract class AbstractResourceHandler implements HttpHandler {
     public AbstractResourceHandler() {
     }
 
-    protected abstract Resource createResource(HttpRouterContext httpRouterContext) throws IOException;
+    protected abstract Resource createResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException;
 
     protected abstract boolean isETagEnabled();
 
@@ -56,6 +60,7 @@ public abstract class AbstractResourceHandler implements HttpHandler {
 
     @Override
     public void handle(HttpRouterContext context) throws IOException {
+        try {
             logger.log(Level.FINEST, () -> "handle: before creating resource " + this.getClass().getName());
             Resource resource = createResource(context);
             logger.log(Level.FINEST, () -> "handle: resource = " + (resource != null ? resource.getClass().getName() + " " + resource : null));
@@ -90,6 +95,13 @@ public abstract class AbstractResourceHandler implements HttpHandler {
                 generateCacheableResource(context, resource);
                 context.done();
             }
+        } catch (ParameterException e) {
+            logger.log(Level.WARNING, e.getMessage(), e);
+            context.status(HttpResponseStatus.BAD_REQUEST)
+                    .setHeader(CONTENT_TYPE, HttpHeaderValues.TEXT_PLAIN)
+                    .body(e.getMessage())
+                    .done();
+        }
     }
 
     private void generateCacheableResource(HttpRouterContext context,

net-http-server/src/main/java/org/xbib/net/http/server/resource/HtmlTemplateResourceHandler.java

@@ -2,6 +2,8 @@ package org.xbib.net.http.server.resource;
 
 import java.io.IOException;
 import java.nio.file.Path;
+
+import org.xbib.net.ParameterException;
 import org.xbib.net.Resource;
 import org.xbib.net.http.server.route.HttpRouterContext;
 
@@ -22,7 +24,8 @@ public class HtmlTemplateResourceHandler extends AbstractResourceHandler {
     }
 
     @Override
-    protected Resource createResource(HttpRouterContext httpRouterContext) throws IOException {
+    protected Resource createResource(HttpRouterContext httpRouterContext)
+            throws IOException, ParameterException {
         return new HtmlTemplateResource(this, httpRouterContext);
     }