chapter 2 scala examples

.gitignore

@@ -1,6 +1,11 @@
 bin
+target
 obj
+.project
+.cache
+.settings
+.classpath
 *.suo
 *.csproj.user
 *.class
-*.jar
+*.jar

scala/pom.xml

@@ -0,0 +1,127 @@
+<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/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>rabbitmqinaction</groupId>
+	<artifactId>sourcecode-scala</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>jar</packaging>
+
+	<name>sourcecode-scala</name>
+	<url>http://maven.apache.org</url>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<scala.version>2.9.1</scala.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.scala-lang</groupId>
+			<artifactId>scala-library</artifactId>
+			<version>${scala.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>com.rabbitmq</groupId>
+			<artifactId>amqp-client</artifactId>
+			<version>2.8.4</version>
+		</dependency>
+		<dependency>
+			<groupId>org.json</groupId>
+			<artifactId>json</artifactId>
+			<version>20090211</version>
+		</dependency>
+		<!-- Test -->
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<version>4.8.1</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.scalatest</groupId>
+			<artifactId>scalatest</artifactId>
+			<version>1.2</version>
+			<scope>test</scope>
+		</dependency>
+
+	</dependencies>
+
+	<build>
+		<sourceDirectory>src/main/scala</sourceDirectory>
+		<testSourceDirectory>src/test/scala</testSourceDirectory>
+		<plugins>
+			<plugin>
+				<groupId>org.scala-tools</groupId>
+				<artifactId>maven-scala-plugin</artifactId>
+				<version>2.15.0</version>
+				<executions>
+					<execution>
+						<goals>
+							<goal>compile</goal>
+							<goal>testCompile</goal>
+						</goals>
+						<configuration>
+							<args>
+								<arg>-make:transitive</arg>
+								<arg>-dependencyfile</arg>
+								<arg>${project.build.directory}/.scala_dependencies</arg>
+							</args>
+						</configuration>
+					</execution>
+				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-surefire-plugin</artifactId>
+				<version>2.6</version>
+				<configuration>
+					<useFile>false</useFile>
+					<disableXmlReport>true</disableXmlReport>
+					<!-- If you have classpath issue like NoDefClassError,... -->
+					<!-- useManifestOnlyJar>false</useManifestOnlyJar -->
+					<includes>
+						<include>**/*Test.*</include>
+						<include>**/*Suite.*</include>
+					</includes>
+				</configuration>
+			</plugin>
+		</plugins>
+		<pluginManagement>
+			<plugins>
+				<!--This plugin's configuration is used to store Eclipse m2e settings 
+					only. It has no influence on the Maven build itself. -->
+				<plugin>
+					<groupId>org.eclipse.m2e</groupId>
+					<artifactId>lifecycle-mapping</artifactId>
+					<version>1.0.0</version>
+					<configuration>
+						<lifecycleMappingMetadata>
+							<pluginExecutions>
+								<pluginExecution>
+									<pluginExecutionFilter>
+										<groupId>org.scala-tools</groupId>
+										<artifactId>
+											maven-scala-plugin
+										</artifactId>
+										<versionRange>
+											[2.15.0,)
+										</versionRange>
+										<goals>
+											<goal>compile</goal>
+											<goal>testCompile</goal>
+										</goals>
+									</pluginExecutionFilter>
+									<action>
+										<ignore></ignore>
+									</action>
+								</pluginExecution>
+							</pluginExecutions>
+						</lifecycleMappingMetadata>
+					</configuration>
+				</plugin>
+			</plugins>
+		</pluginManagement>
+	</build>
+</project>
+

scala/src/main/scala/rabbitmqinaction/sourcecode/GenericConfiguration.scala

@@ -0,0 +1,19 @@
+/**
+ * RabbitMQ in Action - Generic constants
+ *
+ * @author Simon Fraser, Siniatech Ltd 
+ */
+package rabbitmqinaction.sourcecode
+
+object GenericConfiguration {
+  val Active = false
+  val Passive = false
+  val Durable = true
+  val NonDurable = false
+  val AutoDelete = true
+  val NonAutoDelete = false
+  val DirectExchangeType = "direct"
+  val PlainContentType = "text/plain"
+  val EmptyJavaMap = new java.util.HashMap[String, Object]
+  def host: String = "localhost"
+}

scala/src/main/scala/rabbitmqinaction/sourcecode/chapter2/Chapter2Configuration.scala

@@ -0,0 +1,17 @@
+/**
+ * RabbitMQ in Action - Chapter 2 Examples
+ *
+ * @author Alvaro Videla (original)
+ * @author Jason J. W. Williams (original)
+ * @author Simon Fraser, Siniatech Ltd (translation)
+ */
+package rabbitmqinaction.sourcecode.chapter2
+
+object Chapter2Configuration {
+  val RoutingKey = "hola"
+  val Username = "guest"
+  val Password = "guest"
+  val Exchange = "hello-exchange"
+  val QueueName = "hello-queue"
+  val ConsumerTag = "hello-consumer"
+}

scala/src/main/scala/rabbitmqinaction/sourcecode/chapter2/Consumer.scala

@@ -0,0 +1,60 @@
+/**
+ * RabbitMQ in Action - Chapter 2 Examples
+ *
+ * @author Alvaro Videla (original)
+ * @author Jason J. W. Williams (original)
+ * @author Simon Fraser, Siniatech Ltd (translation)
+ */
+package rabbitmqinaction.sourcecode.chapter2
+
+import com.rabbitmq.client.AMQP.BasicProperties
+import com.rabbitmq.client.Channel
+import com.rabbitmq.client.ConnectionFactory
+import com.rabbitmq.client.DefaultConsumer
+import com.rabbitmq.client.Envelope
+
+import Chapter2Configuration.ConsumerTag
+import Chapter2Configuration.Exchange
+import Chapter2Configuration.Password
+import Chapter2Configuration.QueueName
+import Chapter2Configuration.RoutingKey
+import Chapter2Configuration.Username
+import rabbitmqinaction.sourcecode.GenericConfiguration.Active
+import rabbitmqinaction.sourcecode.GenericConfiguration.DirectExchangeType
+import rabbitmqinaction.sourcecode.GenericConfiguration.Durable
+import rabbitmqinaction.sourcecode.GenericConfiguration.EmptyJavaMap
+import rabbitmqinaction.sourcecode.GenericConfiguration.NonAutoDelete
+import rabbitmqinaction.sourcecode.GenericConfiguration.host
+
+object Consumer {
+  def main(args: Array[String]) {
+    val factory = new ConnectionFactory
+    factory.setUsername(Username)
+    factory.setPassword(Password)
+    factory.setHost(host)
+
+    val connection = factory.newConnection();
+
+    val channel = connection.createChannel();
+    channel.exchangeDeclare(Exchange, DirectExchangeType, Active, Durable, NonAutoDelete, EmptyJavaMap);
+    channel.queueDeclare(QueueName, Active, Durable, NonAutoDelete, null);
+    channel.queueBind(QueueName, Exchange, RoutingKey, EmptyJavaMap);
+    channel.basicConsume(QueueName, false, ConsumerTag, new ConsumerCallback(channel));
+  }
+}
+
+class ConsumerCallback(channel: Channel) extends DefaultConsumer(channel) {
+  override def handleDelivery(consumerTag: String, envelope: Envelope, props: BasicProperties, body: Array[Byte]) {
+    getChannel.basicAck(envelope.getDeliveryTag, false)
+    val msg = new String(body)
+    msg match {
+      case "quit" => {
+        getChannel.basicCancel(consumerTag)
+        getChannel.close
+        getChannel.getConnection.close
+        System.exit(0)
+      }
+      case _ => println(msg);
+    }
+  }
+}

scala/src/main/scala/rabbitmqinaction/sourcecode/chapter2/Producer.scala

@@ -0,0 +1,64 @@
+/**
+ * RabbitMQ in Action - Chapter 2 Examples
+ *
+ * @author Alvaro Videla (original)
+ * @author Jason J. W. Williams (original)
+ * @author Simon Fraser, Siniatech Ltd (translation)
+ */
+package rabbitmqinaction.sourcecode.chapter2
+
+import com.rabbitmq.client.AMQP
+import com.rabbitmq.client.ConfirmListener
+import com.rabbitmq.client.ConnectionFactory
+
+import Chapter2Configuration.Exchange
+import Chapter2Configuration.Password
+import Chapter2Configuration.RoutingKey
+import Chapter2Configuration.Username
+import rabbitmqinaction.sourcecode.GenericConfiguration.PlainContentType
+import rabbitmqinaction.sourcecode.GenericConfiguration.host
+
+object Producer {
+
+  def main(args: Array[String]) {
+    if (args.length != 1) {
+      System.err.println("Message body must be supplied");
+      System.exit(1);
+    }
+
+    val factory = new ConnectionFactory
+    factory.setUsername(Username)
+    factory.setPassword(Password)
+    factory.setHost(host)
+
+    val connection = factory.newConnection
+
+    val msg = args.head
+    val msgPropertiesBuilder = new AMQP.BasicProperties.Builder
+    msgPropertiesBuilder.contentType(PlainContentType)
+    val msgProperties = msgPropertiesBuilder.build
+
+    val channel = connection.createChannel
+    channel.confirmSelect
+    channel.addConfirmListener(ConfirmHandler);
+    channel.basicPublish(Exchange, RoutingKey, msgProperties, msg.getBytes)
+    channel.waitForConfirmsOrDie
+
+    channel.close
+    connection.close
+  }
+}
+
+object ConfirmHandler extends ConfirmListener {
+  override def handleAck(deliveryTag: Long, multiple: Boolean) {
+    println("Confirm receipt")
+  }
+
+  override def handleNack(deliveryTag: Long, multiple: Boolean) {
+    println("Message lost");
+  }
+}
+
+
+
+