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Merged
arun-gupta merged 1 commit into from
Nov 12, 2013
Merged

Add Atmosphere Sample #111

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53 changes: 53 additions & 0 deletions websocket/atmosphere-chat/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">
<parent>
<groupId>org.javaee7.websocket</groupId>
<artifactId>websocket-samples</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>org.javaee7.websocket</groupId>
<artifactId>atmosphere-chat</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>atmosphere-chat</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>org.atmosphere.client</groupId>
<artifactId>javascript</artifactId>
<version>2.0.7</version>
<type>war</type>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.0.13</version>
</dependency>

<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.0.13</version>
</dependency>
<dependency>
<groupId>org.atmosphere</groupId>
<artifactId>atmosphere-runtime</artifactId>
<version>2.0.3</version>
</dependency>
<!-- Uncomment to use Redis as a backend for ClouPush
<dependency>
<groupId>org.atmosphere</groupId>
<artifactId>atmosphere-redis</artifactId>
<version>${project.version}</version>
</dependency>
-->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.3</version>
</dependency>
</dependencies>
</project>
76 changes: 76 additions & 0 deletions websocket/atmosphere-chat/src/main/java/org/javaee7/websocket/atmosphere/ChatEndpoint.java
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/*
* Copyright 2013 Jeanfrancois Arcand
*
* 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.javaee7.websocket.atmosphere;

import org.atmosphere.config.service.Disconnect;
import org.atmosphere.config.service.ManagedService;
import org.atmosphere.config.service.Ready;
import org.atmosphere.cpr.AtmosphereResource;
import org.atmosphere.cpr.AtmosphereResourceEvent;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;

/**
* Simple annotated class that demonstrate the power of Atmosphere. This class supports all transports, support
* message length guarantee, heart beat, message cache thanks to the @ManagedAService.
*
* The client will first try with WebSocket and then fallback using the client's preference.
*/
@ManagedService(path = "/chat")
public class ChatEndpoint {
private final Logger logger = LoggerFactory.getLogger(ChatEndpoint.class);

/**
* Invoked when the connection as been fully established and suspended, e.g ready for receiving messages.
*
* @param r
*/
@Ready
public void onReady(final AtmosphereResource r) {
logger.info("Browser {} connected.", r.uuid());
}

/**
* Invoked when the client disconnect or when an unexpected closing of the underlying connection happens.
*
* @param event
*/
@Disconnect
public void onDisconnect(AtmosphereResourceEvent event) {
if (event.isCancelled()) {
logger.info("Browser {} unexpectedly disconnected", event.getResource().uuid());
} else if (event.isClosedByClient()) {
logger.info("Browser {} closed the connection", event.getResource().uuid());
}
}

/**
* Simple annotated class that demonstrate how {@link org.atmosphere.config.managed.Encoder} and {@link org.atmosphere.config.managed.Decoder
* can be used.
*
* @param message an instance of {@link Message}
* @return
* @throws IOException
*/
@org.atmosphere.config.service.Message(encoders = {JacksonEncoder.class}, decoders = {JacksonDecoder.class})
public Message onMessage(Message message) throws IOException {
logger.info("{} just send {}", message.getAuthor(), message.getMessage());
return message;
}

}
38 changes: 38 additions & 0 deletions websocket/atmosphere-chat/src/main/java/org/javaee7/websocket/atmosphere/JacksonDecoder.java
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/*
* Copyright 2013 Jeanfrancois Arcand
*
* 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.javaee7.websocket.atmosphere;

import org.atmosphere.config.managed.Decoder;
import org.codehaus.jackson.map.ObjectMapper;

import java.io.IOException;

/**
* Decode a String into a {@link Message}.
*/
public class JacksonDecoder implements Decoder<String, Message> {

private final ObjectMapper mapper = new ObjectMapper();

@Override
public Message decode(String s) {
try {
return mapper.readValue(s, Message.class);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
38 changes: 38 additions & 0 deletions websocket/atmosphere-chat/src/main/java/org/javaee7/websocket/atmosphere/JacksonEncoder.java
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/*
* Copyright 2013 Jeanfrancois Arcand
*
* 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.javaee7.websocket.atmosphere;

import org.atmosphere.config.managed.Encoder;
import org.codehaus.jackson.map.ObjectMapper;

import java.io.IOException;

/**
* Encode a {@link Message} into a String
*/
public class JacksonEncoder implements Encoder<Message, String> {

private final ObjectMapper mapper = new ObjectMapper();

@Override
public String encode(Message m) {
try {
return mapper.writeValueAsString(m);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
60 changes: 60 additions & 0 deletions websocket/atmosphere-chat/src/main/java/org/javaee7/websocket/atmosphere/Message.java
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/*
* Copyright 2013 Jeanfrancois Arcand
*
* 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.javaee7.websocket.atmosphere;

import java.util.Date;

public class Message {

private String message;
private String author;
private long time;

public Message() {
this("", "");
}

public Message(String author, String message) {
this.author = author;
this.message = message;
this.time = new Date().getTime();
}

public String getMessage() {
return message;
}

public String getAuthor() {
return author;
}

public void setAuthor(String author) {
this.author = author;
}

public void setMessage(String message) {
this.message = message;
}

public long getTime() {
return time;
}

public void setTime(long time) {
this.time = time;
}

}
25 changes: 25 additions & 0 deletions websocket/atmosphere-chat/src/main/webapp/WEB-INF/web.xml
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">

<description>Atmosphere Chat</description>
<display-name>Atmosphere Chat</display-name>
<servlet>
<description>AtmosphereServlet</description>
<servlet-name>AtmosphereServlet</servlet-name>
<servlet-class>org.atmosphere.cpr.AtmosphereServlet</servlet-class>
<init-param>
<param-name>org.atmosphere.cpr.packages</param-name>
<param-value>org.javaee7.websocket.atmosphere</param-value>
</init-param>
<async-supported>true</async-supported>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>AtmosphereServlet</servlet-name>
<url-pattern>/chat/*</url-pattern>
</servlet-mapping>
</web-app>

29 changes: 29 additions & 0 deletions websocket/atmosphere-chat/src/main/webapp/index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Atmosphere Chat</title>
<!-- Atmosphere -->
<script type="text/javascript" src="javascript/atmosphere.js"></script>
<!-- Application -->
<script type="text/javascript" src="javascript/jquery-1.9.0.js"></script>
<script type="text/javascript" src="javascript/application.js"></script>
<style>
* {font-family: tahoma; font-size: 12px; padding: 0px; margin: 0px;}
p {line-height: 18px;}
div {width: 500px; margin-left: auto; margin-right: auto;}
#content {padding: 5px; background: #ddd; border-radius: 5px; border: 1px solid #CCC; margin-top: 10px;}
#header {padding: 5px; background: #f5deb3; border-radius: 5px; border: 1px solid #CCC; margin-top: 10px;}
#input {border-radius: 2px; border: 1px solid #ccc; margin-top: 10px; padding: 5px; width: 400px;}
#status {width: 88px; display: block; float: left; margin-top: 15px;}
</style>
</head>
<body>
<div id="header"><h3>Atmosphere Chat. Default transport is WebSocket, fallback is long-polling</h3></div>
<div id="content"></div>
<div>
<span id="status">Connecting...</span>
<input type="text" id="input" disabled="disabled"/>
</div>
</body>
</html>
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