// Copyright 2006-2013 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.apache.tapestry5.internal.services;
import java.io.IOException;
import java.io.PrintWriter;
import org.apache.tapestry5.ContentType;
import org.apache.tapestry5.MarkupWriter;
import org.apache.tapestry5.internal.structure.Page;
import org.apache.tapestry5.services.MarkupWriterFactory;
import org.apache.tapestry5.services.RequestGlobals;
import org.apache.tapestry5.services.Response;
import org.slf4j.Logger;
public class PageResponseRendererImpl implements PageResponseRenderer
{
private final RequestGlobals requestGlobals;
private final PageMarkupRenderer markupRenderer;
private final MarkupWriterFactory markupWriterFactory;
private final PageContentTypeAnalyzer pageContentTypeAnalyzer;
private final Response response;
private final Logger logger;
public PageResponseRendererImpl(RequestGlobals requestGlobals, MarkupWriterFactory markupWriterFactory,
PageMarkupRenderer markupRenderer, PageContentTypeAnalyzer pageContentTypeAnalyzer, Response response,
Logger logger)
{
this.requestGlobals = requestGlobals;
this.markupWriterFactory = markupWriterFactory;
this.markupRenderer = markupRenderer;
this.pageContentTypeAnalyzer = pageContentTypeAnalyzer;
this.response = response;
this.logger = logger;
}
public void renderPageResponse(Page page) throws IOException
{
assert page != null;
requestGlobals.storeActivePageName(page.getName());
ContentType contentType = pageContentTypeAnalyzer.findContentType(page);
MarkupWriter writer = markupWriterFactory.newMarkupWriter(page);
markupRenderer.renderPageMarkup(page, writer);
PrintWriter pw = response.getPrintWriter(contentType.toString());
long startNanos = -1l;
boolean debugEnabled = logger.isDebugEnabled();
if (debugEnabled)
{
startNanos = System.nanoTime();
}
writer.toMarkup(pw);
if (debugEnabled)
{
long endNanos = System.nanoTime();
long elapsedNanos = endNanos - startNanos;
double elapsedSeconds = ((float) elapsedNanos) / 1000000000F;
logger.debug(String.format("Response DOM streamed to markup in %.3f seconds", elapsedSeconds));
}
pw.close();
}
}