App.java
/*
* Copyright (c) 2012, 2023 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.glassfish.jersey.examples.aggregator;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.ext.RuntimeDelegate;
import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer;
import org.glassfish.jersey.media.sse.SseFeature;
import org.glassfish.jersey.message.internal.ReaderWriter;
import org.glassfish.jersey.moxy.json.MoxyJsonFeature;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.grizzly.http.server.HttpHandler;
import org.glassfish.grizzly.http.server.HttpServer;
import org.glassfish.grizzly.http.server.NetworkListener;
import org.glassfish.grizzly.http.server.Request;
import org.glassfish.grizzly.http.server.Response;
import org.glassfish.grizzly.http.server.ServerConfiguration;
import org.glassfish.grizzly.http.util.HttpStatus;
/**
* Jersey Twitter Aggregator example application.
*/
public class App {
private static final Properties TWITTER_PROPERTIES = loadSettings();
private static final String TWITTER_USER_NAME = "twitter.user.name";
private static final String TWITTER_USER_PASSWORD = "twitter.user.password";
private static final String TWITTER_PROPERTIES_FILE_NAME = "twitter-api.properties";
private static final String APP_PATH = "/aggregator/";
private static final String API_PATH = "/aggregator-api/";
static final String WEB_ROOT = "/webroot";
private static final int PORT = 8080;
/**
* Starts Grizzly HTTP server exposing static content, JAX-RS resources
* and web sockets defined in this application.
*
* @param webRootPath static content root path.
*/
private static void startServer(String webRootPath) {
final HttpServer server = new HttpServer();
Runtime.getRuntime().addShutdownHook(new Thread(server::shutdownNow));
final NetworkListener listener = new NetworkListener("grizzly", "localhost", PORT);
server.addListener(listener);
final ServerConfiguration config = server.getServerConfiguration();
// add handler for serving static content
config.addHttpHandler(new StaticContentHandler(webRootPath),
APP_PATH);
// add handler for serving JAX-RS resources
config.addHttpHandler(RuntimeDelegate.getInstance().createEndpoint(createResourceConfig(), GrizzlyHttpContainer.class),
API_PATH);
try {
// Start the server.
server.start();
} catch (Exception ex) {
throw new ProcessingException("Exception thrown when trying to start grizzly server", ex);
}
}
public static void main(String[] args) {
MainWindow.main(args);
try {
System.out.println("\"SSE Twitter Message Aggregator\" Jersey Example App");
startServer(args.length >= 1 ? args[0] : null);
System.out.println(String.format("Application started.\n"
+ "Access it at %s\n"
+ "Stop the application using CTRL+C",
getAppUri()));
Thread.currentThread().join();
} catch (InterruptedException ex) {
Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
}
}
static String getApiUri() {
return String.format("http://localhost:%s%s", PORT, API_PATH);
}
private static String getAppUri() {
return String.format("http://localhost:%s%s", PORT, APP_PATH);
}
/**
* Create Jersey server-side application resource configuration.
*
* @return Jersey server-side application configuration.
*/
private static ResourceConfig createResourceConfig() {
return new ResourceConfig()
.registerClasses(MessageStreamResourceJersey.class,
MessageStreamResourceJaxRs.class,
SseFeature.class,
MoxyJsonFeature.class);
}
/**
* Get configured twitter user name.
*
* @return configured twitter user name.
*/
static String getTwitterUserName() {
return (String) TWITTER_PROPERTIES.get(TWITTER_USER_NAME);
}
/**
* Get configured twitter user password.
*
* @return configured twitter user password.
*/
static String getTwitterUserPassword() {
return (String) TWITTER_PROPERTIES.get(TWITTER_USER_PASSWORD);
}
private static Properties loadSettings() {
final Properties properties = new Properties();
InputStream st = null;
try {
String homeDir = System.getProperty("user.home");
st = Files.newInputStream(Paths.get(homeDir, TWITTER_PROPERTIES_FILE_NAME));
properties.load(st);
} catch (IOException e) {
// ignore
} finally {
if (st != null) {
try {
st.close();
} catch (IOException ex) {
// ignore
}
}
}
for (String name : new String[] {TWITTER_USER_NAME, TWITTER_USER_PASSWORD}) {
String value = System.getProperty(name);
if (value != null) {
properties.setProperty(name, value);
}
}
if (properties.getProperty(TWITTER_USER_NAME) == null
|| properties.getProperty(TWITTER_USER_PASSWORD) == null) {
System.out.println(String.format(
"'%s' and '%s' properties not set. "
+ "You need to provide them either via '$HOME/%s' file or as system properties.",
TWITTER_USER_NAME, TWITTER_USER_PASSWORD, TWITTER_PROPERTIES_FILE_NAME));
System.exit(1);
}
return properties;
}
/**
* Simple HttpHandler for serving static content included in web root
* directory of this application.
*/
private static class StaticContentHandler extends HttpHandler {
private static final HashMap<String, String> EXTENSION_TO_MEDIA_TYPE;
static {
EXTENSION_TO_MEDIA_TYPE = new HashMap<>();
EXTENSION_TO_MEDIA_TYPE.put("html", "text/html");
EXTENSION_TO_MEDIA_TYPE.put("js", "application/javascript");
EXTENSION_TO_MEDIA_TYPE.put("css", "text/css");
EXTENSION_TO_MEDIA_TYPE.put("png", "image/png");
EXTENSION_TO_MEDIA_TYPE.put("ico", "image/png");
}
private final String webRootPath;
StaticContentHandler(String webRootPath) {
this.webRootPath = webRootPath;
}
@Override
public void service(Request request, Response response) throws Exception {
String uri = request.getRequestURI();
int pos = uri.lastIndexOf('.');
String extension = uri.substring(pos + 1);
String mediaType = EXTENSION_TO_MEDIA_TYPE.get(extension);
if (uri.contains("..") || mediaType == null) {
response.sendError(HttpStatus.NOT_FOUND_404.getStatusCode());
return;
}
final String resourcesContextPath = request.getContextPath();
System.out.println("context: " + resourcesContextPath);
if (resourcesContextPath != null && !resourcesContextPath.isEmpty()) {
if (!uri.startsWith(resourcesContextPath)) {
response.sendError(HttpStatus.NOT_FOUND_404.getStatusCode());
return;
}
uri = uri.substring(resourcesContextPath.length());
System.out.println("URI: " + uri);
}
InputStream fileStream;
try {
fileStream = webRootPath == null
? App.class.getResourceAsStream(WEB_ROOT + uri)
: Files.newInputStream(Paths.get(webRootPath, uri));
} catch (IOException e) {
fileStream = null;
}
if (fileStream == null) {
response.sendError(HttpStatus.NOT_FOUND_404.getStatusCode());
} else {
response.setStatus(HttpStatus.OK_200);
response.setContentType(mediaType);
ReaderWriter.writeTo(fileStream, response.getOutputStream());
}
}
}
}