Add Jetty sample project for SPR-14669

Author: rstoyanchev

SPR-14669/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>org.example</groupId>
+	<artifactId>SPR-14669</artifactId>
+	<name>Repro project for SPR-14669</name>
+	<packaging>war</packaging>
+	<version>1.0.0-BUILD-SNAPSHOT</version>
+
+	<dependencies>
+		<dependency>
+			<groupId>javax.servlet</groupId>
+			<artifactId>javax.servlet-api</artifactId>
+			<version>3.1.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-api</artifactId>
+			<version>1.6.4</version>
+			<scope>compile</scope>
+		</dependency>
+		<dependency>
+			<groupId>ch.qos.logback</groupId>
+			<artifactId>logback-classic</artifactId>
+			<version>1.0.1</version>
+			<scope>runtime</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<finalName>SPR-14669</finalName>
+		<plugins>
+		    <plugin>
+		        <groupId>org.eclipse.jetty</groupId>
+		        <artifactId>jetty-maven-plugin</artifactId>
+		        <version>9.3.11.v20160721</version>
+		        <configuration>
+		            <webApp>
+		                <contextPath>/${project.artifactId}</contextPath>
+		            </webApp>
+		        </configuration>
+		    </plugin>
+		</plugins>
+	</build>
+
+</project>
+

SPR-14669/src/main/java/org/example/spr14669/LoggingFilter.java

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+package org.example.spr14669;
+
+import java.io.IOException;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletRequest;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static javax.servlet.DispatcherType.ASYNC;
+import static javax.servlet.DispatcherType.ERROR;
+import static javax.servlet.DispatcherType.FORWARD;
+import static javax.servlet.DispatcherType.INCLUDE;
+import static javax.servlet.DispatcherType.REQUEST;
+
+@WebFilter(
+		urlPatterns = "/*",
+		asyncSupported = true,
+		dispatcherTypes = {REQUEST, ERROR, ASYNC, FORWARD, INCLUDE}
+)
+public class LoggingFilter implements Filter {
+
+	private static Logger logger = LoggerFactory.getLogger(LoggingFilter.class);
+
+
+	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
+			throws IOException, ServletException {
+
+		HttpServletRequest httpReq = (HttpServletRequest) req;
+		logger.info("\n\n" + httpReq.getMethod() + " " + httpReq.getRequestURI() +
+				", DispatcherType: " + req.getDispatcherType() + "\n\n");
+
+		chain.doFilter(req, res);
+	}
+
+	public void init(FilterConfig filterConfig) throws ServletException { }
+
+	public void destroy() { }
+
+}

SPR-14669/src/main/java/org/example/spr14669/TestServlet.java

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+package org.example.spr14669;
+
+import java.io.IOException;
+import javax.servlet.AsyncContext;
+import javax.servlet.AsyncEvent;
+import javax.servlet.AsyncListener;
+import javax.servlet.DispatcherType;
+import javax.servlet.ServletException;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebServlet;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+@WebServlet(urlPatterns = "/test", asyncSupported = true)
+public class TestServlet extends HttpServlet {
+
+	private static Logger logger = LoggerFactory.getLogger(TestServlet.class);
+
+
+	@Override
+	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
+			throws ServletException, IOException {
+
+		if (!DispatcherType.REQUEST.equals(req.getDispatcherType())) {
+			logger.info("Unexpected DispatcherType: " + req.getDispatcherType());
+			return;
+		}
+
+		AsyncContext asyncContext = req.startAsync(req, resp);
+		asyncContext.setTimeout(5000);
+		asyncContext.addListener(new AsyncListener() {
+
+			public void onTimeout(AsyncEvent event) throws IOException {
+				logger.info("Timeout event");
+				ServletResponse response = event.getAsyncContext().getResponse();
+				if (!response.isCommitted()) {
+					((HttpServletResponse) response).setStatus(503);
+				}
+				// event.getAsyncContext().complete();
+			}
+
+			public void onError(AsyncEvent event) throws IOException { }
+
+			public void onStartAsync(AsyncEvent event) throws IOException { }
+
+			public void onComplete(AsyncEvent event) throws IOException { }
+		});
+
+	}
+
+}

SPR-14669/src/main/resources/logback.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+		<layout class="ch.qos.logback.classic.PatternLayout">
+			<Pattern>%d{HH:mm:ss} [%thread] %logger{0} - %msg%n</Pattern>
+		</layout>
+	</appender>
+	<logger name="org.example" level="DEBUG" />
+	<root level="info">
+		<appender-ref ref="STDOUT" />
+	</root>
+</configuration>