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@davisford
davisford committed May 17, 2012
1 parent 97a4b9d commit 1476a4f
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160 changes: 160 additions & 0 deletions pom.xml
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<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>com.daisyworks</groupId>
<artifactId>arduino-toggle-demo</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>arduino-toggle-demo</name>
<description>Demo: how to toggle any Arduino USB port from a simple WebApp</description>

<repositories>
<repository>
<id>java.net.2</id>
<name>Java Net 2 Repository</name>
<url>http://download.java.net/maven/2</url>
</repository>
<repository>
<id>apache.incubating</id>
<name>Apache Incubating Repository</name>
<url>http://people.apache.org/repo/m2-incubating-repository</url>
</repository>
<repository>
<id>apache.snapshot</id>
<name>Apache Snapshot Repository</name>
<url>http://people.apache.org/repo/m2-snapshot-repository</url>
</repository>
</repositories>

<dependencies>

<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-json</artifactId>
<version>LATEST</version>
</dependency>
<dependency>
<groupId>com.sun.jersey.contribs</groupId>
<artifactId>jersey-spring</artifactId>
<version>LATEST</version>
</dependency>

<!-- embedded jetty server -->
<dependency>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-webapp</artifactId>
<version>8.0.0.M1</version>
</dependency>

<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<exclusions>
<exclusion>
<groupId>com.sun.jmx</groupId>
<artifactId>jmxri</artifactId>
</exclusion>
<exclusion>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jdmk</groupId>
<artifactId>jmxtools</artifactId>
</exclusion>
</exclusions>
</dependency>

</dependencies>

<build>
<finalName>demo</finalName>
<plugins>

<!-- enable java 6 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>

<!-- automatically clean before build -->
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<executions>
<execution>
<id>auto-clean</id>
<phase>validate</phase>
<goals>
<goal>clean</goal>
</goals>
</execution>
</executions>
</plugin>

<!-- @see http://false.ekta.is/2010/12/jettyrun-maven-plugin-file-locking-on-windows-a-better-way/ -->
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>maven-jetty-plugin</artifactId>
<version>6.1.18</version>
<configuration>
<contextPath>/</contextPath>
<scanIntervalSeconds>5</scanIntervalSeconds>
<connectors>
<connector implementation="org.mortbay.jetty.bio.SocketConnector">
<port>8080</port>
</connector>
</connectors>
</configuration>
</plugin>

<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<filters>
<filter>
<artifact>*:*</artifact>
</filter>
</filters>
<transformers>
<!-- have to append all the spring META-INF files or app context
fails -->
<transformer
implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.handlers</resource>
</transformer>
<transformer
implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.schemas</resource>
</transformer>
<!-- defines the main entry point -->
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>com.daisyworks.demo.MainRunner</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>

</plugins>
</build>





</project>
71 changes: 71 additions & 0 deletions src/main/java/com/daisyworks/demo/DoorService.java
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package com.daisyworks.demo;

import java.util.HashMap;
import java.util.Map;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import org.apache.log4j.Logger;

/**
* This is the service class that handles the web browser requests
*/
@Path("/")
public class DoorService {

// map of USB ports
private static Map<Integer, Port> map = new HashMap<Integer, Port>();

private static final Logger LOGGER = Logger.getLogger(DoorService.class);

// current state of door
private int toggled;

/**
* Constructor
*/
public DoorService() {
// FIXME: remove this auto-generated map to show data in browser
map.put(1, new Port(1, "/dev/ttyUSB0"));
map.put(2, new Port(2, "/dev/ttyUSB1"));
LOGGER.info("---------------- Widget Service CTOR ------------------");
}

/**
* Fetch the list of ports; returns a JSON document with each {@link Port} object rendered as JSON
* @return a JSON document with each {@link Port} object rendered as JSON
*/
@GET
@Path("/door/ports")
@Produces(MediaType.APPLICATION_JSON)
public PortCollection getPorts() {
LOGGER.debug("Getting all ports");
return new PortCollection(map.values());
}

/**
* Toggle the state of the door on/off
* @param portId the id of the USB port you want to control
* @param val the value of the door where <tt>1 => open</tt> and <tt>0 => closed</tt>
* @return A string that indicates if it was successful or not as "true" or "false"
*/
@GET
@Path("/door/toggle/{portId}/{val}")
@Produces(MediaType.TEXT_PLAIN)
public String toggle(@PathParam("portId") Integer portId, @PathParam("val") Integer val) {
toggled = val;
if(map.containsKey(portId)) {
Port port = map.get(portId);
LOGGER.info("Toggle USB port "+port.getPath()+" =>" + ((toggled == 1) ? "on" : "off"));
return "true";
} else {
LOGGER.error("No port found for that id: "+portId);
return "false";
}
}

}
60 changes: 60 additions & 0 deletions src/main/java/com/daisyworks/demo/MainRunner.java
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package com.daisyworks.demo;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.net.URL;

import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.webapp.WebAppContext;

public class MainRunner {

private static final int DEFAULT_PORT = 8080;

/**
* Launches an embedded Jetty server running the webapp herein
*
* Specify arg[0] as port number or else it will try 8080
* @param args
*/
public static void main(String[] args) {
int port = DEFAULT_PORT;
if(args.length > 0) {
try {
port = Integer.parseInt(args[0]);
} catch(Exception e) {
System.err.println("Did you mean to specify a port? Re-run me with something like: `java -jar <filename.jar> 8081` for example to run on port 8081; I am going to try port 8080 which is my default.");
}
}

try {
Server server = new Server(port);

final URL waUrl = MainRunner.class.getClassLoader().getResource("webapp");
final String waUrlString = waUrl.toExternalForm();
System.err.println("Starting Jetty server on port: "+port+": "+waUrlString);

WebAppContext ctx = new WebAppContext();
ctx.setWar(waUrlString);
ctx.setContextPath("/demo");
ctx.setResourceBase("/WEB-INF/web.xml");
ctx.setParentLoaderPriority(true);

server.setHandler(ctx);
server.start();
server.join();
} catch(Exception ex) {
System.err.println("Failed to launch embedded Jetty server \n"+ getStackTraceAsString(ex));
System.exit(1);
}
}

public static String getStackTraceAsString(Throwable t) {
final Writer result = new StringWriter();
final PrintWriter printWriter = new PrintWriter(result);
t.printStackTrace(printWriter);
return result.toString();
}

}
39 changes: 39 additions & 0 deletions src/main/java/com/daisyworks/demo/Port.java
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package com.daisyworks.demo;

import javax.xml.bind.annotation.XmlRootElement;

/**
* A generic widget object that can be serialized; modify to suit your needs.
*/
@XmlRootElement(name = "port")
public class Port {

private String path;
private Integer id;

public Port() { }

public Port(int id, String path) { this.id = id; this.path = path; }

public void setPath(String path) {
this.path = path;
}

public String getPath() {
return path;
}

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

@Override
public String toString() {
return String.format("{id=%s, path:%s}",
id, path);
}
}
27 changes: 27 additions & 0 deletions src/main/java/com/daisyworks/demo/PortCollection.java
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package com.daisyworks.demo;

import java.util.Collection;

import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;

/**
* Wrapper class for a collection of {@link Port} objects for JAXB purposes
*/
@XmlRootElement(name="ports")
public class PortCollection {

private Collection<Port> ports;

public PortCollection() { }

public PortCollection(Collection<Port> ports) {
this.ports = ports;
}

@XmlElementWrapper(name="ports")
public Collection<Port> getPorts() {
return ports;
}

}
17 changes: 17 additions & 0 deletions src/main/resources/log4j.properties
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log4j.rootLogger=INFO, stdout, logfile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - <%m>%n

log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=/opt/tomcat/logs/cxf-rest-example.log
log4j.appender.logfile.MaxFileSize=512KB
# Keep three backup files.
log4j.appender.logfile.MaxBackupIndex=3
# Pattern to output: date priority [category] - message
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.logger.org.springframework=DEBUG
log4j.logger.org.eclipse=DEBUG
12 changes: 12 additions & 0 deletions src/main/resources/webapp/WEB-INF/applicationContext.xml
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<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

<context:component-scan base-package="com.daisyworks.demo"/>
<bean id="doorService" class="com.daisyworks.demo.DoorService" />

</beans>

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