| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.catalina.connector; |
| |
| import java.io.BufferedWriter; |
| import java.io.IOException; |
| import java.io.Writer; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import static org.junit.Assert.assertEquals; |
| import org.junit.Test; |
| |
| import org.apache.catalina.Context; |
| import org.apache.catalina.startup.Tomcat; |
| import org.apache.catalina.startup.TomcatBaseTest; |
| import org.apache.tomcat.util.buf.ByteChunk; |
| |
| public class TestOutputBuffer extends TomcatBaseTest{ |
| |
| /* |
| * Expect that the buffered results are slightly slower since Tomcat now has |
| * an internal buffer so an extra one just adds overhead. |
| * |
| * @see "https://bz.apache.org/bugzilla/show_bug.cgi?id=52328" |
| */ |
| @Test |
| public void testWriteSpeed() throws Exception { |
| Tomcat tomcat = getTomcatInstance(); |
| |
| Context root = tomcat.addContext("", TEMP_DIR); |
| |
| for (int i = 1; i <= WritingServlet.EXPECTED_CONTENT_LENGTH; i*=10) { |
| WritingServlet servlet = new WritingServlet(i); |
| Tomcat.addServlet(root, "servlet" + i, servlet); |
| root.addServletMappingDecoded("/servlet" + i, "servlet" + i); |
| } |
| |
| tomcat.start(); |
| |
| ByteChunk bc = new ByteChunk(); |
| |
| for (int i = 1; i <= WritingServlet.EXPECTED_CONTENT_LENGTH; i*=10) { |
| int rc = getUrl("http://localhost:" + getPort() + |
| "/servlet" + i, bc, null, null); |
| assertEquals(HttpServletResponse.SC_OK, rc); |
| assertEquals( |
| WritingServlet.EXPECTED_CONTENT_LENGTH, bc.getLength()); |
| |
| bc.recycle(); |
| |
| rc = getUrl("http://localhost:" + getPort() + |
| "/servlet" + i + "?useBuffer=y", bc, null, null); |
| assertEquals(HttpServletResponse.SC_OK, rc); |
| assertEquals( |
| WritingServlet.EXPECTED_CONTENT_LENGTH, bc.getLength()); |
| |
| bc.recycle(); |
| } |
| } |
| |
| @Test |
| public void testBug52577() throws Exception { |
| Tomcat tomcat = getTomcatInstance(); |
| |
| Context root = tomcat.addContext("", TEMP_DIR); |
| |
| Bug52577Servlet bug52577 = new Bug52577Servlet(); |
| Tomcat.addServlet(root, "bug52577", bug52577); |
| root.addServletMappingDecoded("/", "bug52577"); |
| |
| tomcat.start(); |
| |
| ByteChunk bc = new ByteChunk(); |
| |
| int rc = getUrl("http://localhost:" + getPort() + "/", bc, null, null); |
| assertEquals(HttpServletResponse.SC_OK, rc); |
| assertEquals("OK", bc.toString()); |
| } |
| |
| private static class WritingServlet extends HttpServlet { |
| |
| private static final long serialVersionUID = 1L; |
| |
| protected static final int EXPECTED_CONTENT_LENGTH = 100000; |
| |
| private final String writeString; |
| private final int writeCount; |
| |
| public WritingServlet(int writeLength) { |
| StringBuilder sb = new StringBuilder(); |
| for (int i = 0; i < writeLength; i++) { |
| sb.append('x'); |
| } |
| writeString = sb.toString(); |
| writeCount = EXPECTED_CONTENT_LENGTH / writeLength; |
| } |
| |
| @Override |
| protected void doGet(HttpServletRequest req, HttpServletResponse resp) |
| throws ServletException, IOException { |
| |
| resp.setContentType("text/plain"); |
| resp.setCharacterEncoding("ISO-8859-1"); |
| |
| Writer w = resp.getWriter(); |
| |
| // Wrap with a buffer if necessary |
| String useBufferStr = req.getParameter("useBuffer"); |
| if (useBufferStr != null) { |
| w = new BufferedWriter(w); |
| } |
| |
| long start = System.nanoTime(); |
| for (int i = 0; i < writeCount; i++) { |
| w.write(writeString); |
| } |
| if (useBufferStr != null) { |
| w.flush(); |
| } |
| long lastRunNano = System.nanoTime() - start; |
| |
| System.out.println("Write length: " + writeString.length() + |
| ", Buffered: " + (useBufferStr == null ? "n" : "y") + |
| ", Time: " + lastRunNano + "ns"); |
| } |
| } |
| |
| private static class Bug52577Servlet extends HttpServlet { |
| |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| protected void doGet(HttpServletRequest req, HttpServletResponse resp) |
| throws ServletException, IOException { |
| Writer w = resp.getWriter(); |
| w.write("OK"); |
| resp.resetBuffer(); |
| w.write("OK"); |
| } |
| } |
| } |