.NET @ apache.org

.NET @ apache.org

ApacheCon NA - Vancouver BC
November 2011 2:30p

husted@apache.org
http://www.slideshare.net/ted.husted

.NET @ apache.org

Like it or not, many open source developers are moving to the
Microsoft .NET platform, and we're bringing our favorite tools
with us!

In this session, we look inside ASF projects that are creating
software for .NET and Mono, like Logging and Lucene.net -- to
show you how to create leading-edge ASP.NET applications
with ASF open source libraries, and how you can integrate with
other appications using Thrift, Chemistry/DotCMIS, QPid or
ActiveMQ.

We'll also look at integrating other .NET open source projects,
like Spring.NET, NVelocity, and JayRock, into your C#
application to create a complete open source .NET stack.

http://balanagaraj.wordpress.com/

Hello World - Log4Net
using System;
namespace log4net_console
{
class Program
{
static void Main( string[] args )
{
log4net.Config. BasicConfigurator.Configure();
log4net.ILog log = log4net.LogManager.GetLogger (typeof
(Program));
log.Debug( "Hello World!" );
log.Info( "I'm a simple log4net tutorial." );
log.Warn( "... better be careful ..." );
log.Error( "ruh-roh: an error occurred" );
log.Fatal( "OMG we're dooooooomed!" );
Console.ReadLine(); // so you can read the output
}
}
}
http://www.beefycode.com/post/Log4Net-Tutorial-pt-1-Getting-Started.aspx

Web.config

<appender name="RollingLogFileAppender" type="
log4net.Appender.RollingFileAppender">
<threshold value="All" />
<file value="C:LogFile" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="'.'yyyyMMdd'.log.txt'" />
<lockingModel type="log4net.Appender.
FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern
value="%date %-5level %logger - %message%newline" />
</layout>
</appender>

Program.cs

using System;
namespace Tutorial2_BasicXmlConfiguration
{
class Program
{
static void Main( string[] args )
{
log4net.Config. XmlConfigurator.Configure();
log4net.ILog log = log4net.LogManager.GetLogger (typeof(Program));
log.Info( "beginning loop" );
for( int c = 0; c < 100; ++c )
{
log.DebugFormat( "iteration #{0}", c );
}
log.Info( "loop has completed" );
Console.ReadLine();
}
}
}
// http://www.beefycode.com/post/Log4Net-Tutorial-pt-2-Basic-XML-Configuration.aspx

http://www.l4ndash.com/

Installation

ZIP Archive NuGet
● Binary ● Log4Net
○ bin ● Log4Net Rolling
○ doc Appender
● Source
○ examples
○ src
○ tests

Installation

ZIP Archive NuGet
● Binary ● Log4Net
○ bin ● Log4Net Rolling
○ doc Appender
● Source ● Twitter Appender
○ examples
○ src
○ tests

Log4net

● When to use it
○ You need to analyze the function or performance of an
application
● What it does
○ Writes statements to a file either when certain lines are
processed or when errors occur
● How it works
○ Log4net uses a flexible array of providers to capture
and categorize logging statements
● Where does it fit in
○ Logging is a crosscutting concern that can occur at any
application layer

Log4Net Resources

● Beefy Code Log4Net Tutorial (7 parts)
○ http://www.beefycode.com/post/Log4Net-Tutorial-pt-1-Getting-Started.aspx

● The Code Project Log4Net Tutorial
○ http://www.codeproject.com/KB/dotnet/Log4net_Tutorial.aspx

● Log4j Logging Mechanism (Kunal Dabir)
○ http://www.slideshare.net/kunal.dabir/log4j-logging-mechanism?src=related_normal&rel=1847004

http://lemonodor.com/archives/001361.html

http://www.slideshare.net/otisg/lucene-introduction

Documents and Fields

// Documents and Fields
var fordFiesta = new Document();
fordFiesta.Add(new Field("Id", "1", Field.Store.YES, Field.Index.NOT_ANALYZED));
fordFiesta.Add(new Field("Make", "Ford", Field.Store.YES, Field.Index.ANALYZED));
fordFiesta.Add(new Field("Model", "Fiesta", Field.Store.YES, Field.Index.ANALYZED));
var fordFocus = new Document();
fordFocus.Add(new Field("Id", "2", Field.Store.YES, Field.Index.NOT_ANALYZED));
fordFocus.Add(new Field("Make", "Ford", Field.Store.YES, Field.Index.ANALYZED));
fordFocus.Add(new Field("Model", "Focus", Field.Store.YES, Field.Index.ANALYZED));

var vauxhallAstra = new Document();
vauxhallAstra.Add(new Field("Id", "3", Field.Store.YES, Field.Index.NOT_ANALYZED));
vauxhallAstra.Add(new Field("Make", "Vauxhall", Field.Store.YES, Field.Index.ANALYZED));
vauxhallAstra.Add(new Field("Model", "Astra", Field.Store.YES, Field.Index.ANALYZED));

http://www.d80.co.uk/post/2011/03/29/LuceneNet-Tutorial.aspx

Directories, Analyzers, and Writers

// Directory
string directoryLocation = Environment.CurrentDirectory + "LuceneIndex";
Directory directory = FSDirectory.Open(new DirectoryInfo(directoryLocation));

// Analyzer
Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_29);

// Writer
var writer = new IndexWriter(directory, analyzer, true, IndexWriter.MaxFieldLength.LIMITED);
writer.AddDocument(fordFiesta);
writer.AddDocument(fordFocus);
writer.AddDocument(vauxhallAstra);
writer.Optimize();
writer.Close();
Console.WriteLine("Index stored at " + directoryLocation);

Parse, Query, and Search

// Read Index
IndexReader indexReader = IndexReader.Open(directory, true);
// Parse and Query Index
var queryParser = new QueryParser(Version.LUCENE_29, "Make", analyzer);
var query = queryParser.Parse("Ford");
Searcher indexSearch = new IndexSearcher(indexReader);
// Search Index and review Hits
TopDocs resultDocs = indexSearch.Search(query, indexReader.MaxDoc());
var hits = resultDocs.scoreDocs;
foreach (var hit in hits) {
var documentFromSearcher = indexSearch.Doc(hit.doc);
Console.WriteLine(documentFromSearcher.Get("Make") + " " +
documentFromSearcher.Get("Model"));
}

Lucene.net

● When to use it
○ You need to search data in a flexible and powerful way
● What it does
○ Indexes data for retrieval from primary storage
● How it works
○ Lucene "tokenizes" strings into an inverted index
○ Data access and Data storage layer
■ Searches are logical queries that access indexes
stored as a secondary data source

Lucene.net Resources

● Lucene.net Tutorial (Dan's Dev Blog)
○ http://www.d80.co.uk/post/2011/03/29/LuceneNet-Tutorial.aspx
○ http://www.d80.co.uk/post/2011/09/08/LuceneNet-Video-Tutorial.aspx

● Lucene Introduction
○ http://www.slideshare.net/otisg/lucene-introduction

● Simple Lucene - Lucene.net made easy
○ http://blogs.planetcloud.co.uk/mygreatdiscovery/post/SimpleLucene-e28093-Lucenenet-made-easy.asp

www.slideshare.net/talentica/building-scalable-and-language-independent-java-services-using-apache-thrift-6286467

http://thrift.apache.org/about/

time.thrift

# time.thrift namespace java tserver.gen
typedef i64 Timestamp
service TimeServer {
Timestamp time()
}

http://nbonvin.wordpress.com/2009/03/08/simple-thrift-tutorial/

Generate the code

thrift --gen java time.thrift

TimeServerImpl.java

package server;
import org.apache.thrift.TException;
import tserver.gen.*;

class TimeServerImpl implements TimeServer.Iface {
@Override
public long time() throws TException {
long time = System.currentTimeMillis();
System.out.println("time() called: " + time);
return time;
}
}

Server.java
package server;
import java.io.IOException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TBinaryProtocol.Factory;
import org.apache.thrift.server.TServer; import org.apache.thrift.server.TThreadPoolServer;
import org.apache.thrift.transport.TServerSocket; import org.apache.thrift.transport.TTransportException;
import tserver.gen.TimeServer;
public class Server {
private void start() {
try {
TServerSocket serverTransport = new TServerSocket(7911);
TimeServer.Processor processor = new TimeServer.Processor(new TimeServerImpl());
Factory protFactory = new TBinaryProtocol.Factory(true, true);
TServer server = new TThreadPoolServer(processor, serverTransport, protFactory);
System.out.println("Starting server on port 7911 ...");
server.serve();
} catch (TTransportException e) { e.printStackTrace();
} catch (IOException e) { e.printStackTrace();
}
}
public static void main(String args[]) {
Server srv = new Server(); srv.start(); }}

TimeClient.java
package client;
import java.net.SocketException;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TProtocol; import org.apache.thrift.transport.TSocket;
import org.apache.thrift.transport.TTransport; import org.apache.thrift.transport.TTransportException;
import tserver.gen.TimeServer.Client;
public class TimeClient {
private void start() {
TTransport transport;
try {
transport = new TSocket("localhost", 7911);
TProtocol protocol = new TBinaryProtocol(transport);
Client client = new Client(protocol);
transport.open();
long time = client.time();
System.out.println("Time from server:" + time);
transport.close();
} catch (SocketException e) { e.printStackTrace(); } catch (TTransportException e) {
e.printStackTrace(); } catch (TException e) { e.printStackTrace();
}
}
public static void main(String[] args) {
TimeClient c = new TimeClient(); c.start(); } }

http://www.slideshare.net/jhammerb/20080611accel

Thrift

● When to use it
○ You need to invoke an action between co-located
servers, especially on a different language platform.
● What it does
○ Transfers data to a procedure on the server using a
flexible, lightweight, efficient protocol
● How it works
○ You define the data transfer object and service in a
JSON-like syntax, and Thrift generates the code for
client code and stub server code
○ Data source layer
■ Alternative to SOAP, REST, or COM

Thrift Resources

● Apache Thrift (Prunicki)
○ http://jnb.ociweb.com/jnb/jnbJun2009.html

● Getting Started with Apache Thrift Tutorial (Rakowski)
○ http://www.thrift.pl/Thrift-tutorial-getting-started.html

● Simple Thrift Tutorial (Bovin)
○ http://nbonvin.wordpress.com/2009/03/08/simple-thrift-tutorial/

http://gazarenkov.blogspot.com/

http://www.slideshare.net/pie1120/the-point-of-the-content-interoperability-services-cmis-standard

Chemistry / DotCMIS

● When to use it
○ You need to connect CMIS repositories
● What it does
○ DotCMIS implements the CMIS client standard
● How it works
○ Exchanges data through web services or Atom.
○ Data Access Layer

http://gti-ia.upv.es/sma/tools/magentix2/overview.php

Qpid API

● message
●
● connection
●
● session
●
● sender

● receiver

Qpid API

● message - standard fields, custom properties, and content.
●
● connection
●
● session
●
● sender

● receiver

Qpid API

●
● connection - network connection to a remote endpoint.
●
● session
●
● sender

● receiver

Qpid API

●
●
● session - ordered messages based on a connection.
●
● sender

● receiver

Qpid API

●
●
●
● sender - based on a session for a given target address.

● receiver

Qpid API

●
●
●
● sender - based on a session for a given target address.

● receiver - based on a session for a given source address.

using System;
using Org.Apache.Qpid.Messaging;
namespace Org.Apache.Qpid.Messaging {
class Program {
static void Main(string[] args) {
String broker = args.Length > 0 ? args[0] : "localhost:5672";
String address = args.Length > 1 ? args[1] : "amq.topic";
Connection connection = null;
try {
connection = new Connection( broker);
connection.Open();
Session session = connection.CreateSession();
Receiver receiver = session.CreateReceiver( address);
Sender sender = session.CreateSender( address);
sender.Send(new Message("Hello world !"));
Message message = new Message();
message = receiver. Fetch(DurationConstants.SECOND * 1);
Console.WriteLine("{0}", message.GetContent());
session. Acknowledge(); connection. Close();
} catch (Exception e) {
Console.WriteLine("Exception {0}.", e);
if (connection != null) connection.Close();
}}}}

docs.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.3/html-single/Programming_in_Apache_Qpid/index.html

Qpid

● When to use it
○ Various clients need to exchange information with an
incompatible server.
● What it does
○ Places a sophisticated broker between system that can
queue and/or transform messages.
● How it works
○ Qpid implements the AMPQ industry standard.
○ Data access layer integration

Qpid Resources

● Message Orientated Middleware (Wikipedia)
○ http://en.wikipedia.org/wiki/Message-oriented_middleware

● Advanced Message Queuing Protocol (Wikipedia)
○ http://en.wikipedia.org/wiki/Advanced_Message_Queuing_Protocol

● Programming in Apache Qpid (Red Hat)
● http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/1.3/html-
single/Programming_in_Apache_Qpid/index.html

ActiveMQ C# Client

● When to use it
○ You want to connect a C# client to a Java Messaging
Server (among others)
● What it does
○ Sends and receives messages brokered by a server.
● How it works
○ Exposes a standard API and
provides connectivity.
○ Data Access Layer integration

● http://activemq.apache.org/

Spring.NET + JayRock + NVelocity

● When to use it
○ You would like an alternative to the default ASP.NET
framework.
● What it does
○ With Postgres or MongoDB, forms a soup-to-nuts web
application platform.
● How it works
○ Taken together the platform provides dependency
injection, remote procedure calls, and dynamic,
lightweight UI pages.
○ All levels

Spring.net
<objects xmlns="http://www.springframework.net">
<object name="MyMovieLister"
type="Spring.Examples.MovieFinder.MovieLister,
Spring.Examples.MovieFinder">
</object>
</objects>

public static void Main () {
IApplicationContext ctx = ContextRegistry.GetContext();
IMovieLister lister = (IMovieLister) ctx.GetObject ("MyMovieLister");
Movie[] movies = lister.MoviesDirectedBy("Roberto Benigni");
}

public interface IMovieLister
IList MoviesDirectedBy (string director);
}

http://www.springframework.net/doc-latest/reference/html/quickstarts.html

Jayrock

public class HelloWorld : JsonRpcHandler {
[ JsonRpcMethod("greetings") ]
public string Greetings() {
return "Welcome to Jayrock!";
}}

http://jayrock.berlios.de/

Jayrock
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.
org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>Hello Jayrock</title>
<script type="text/javascript" src="json.js"></script>
<script type="text/javascript" src="helloworld.ashx?proxy"></script>
<script type="text/javascript">
/* <![CDATA[ */

window.onload = function() {
var s = new HelloWorld();
alert("sync:" + s.greetings());
s.greetings(function(response) {
alert("async:" + response.result)

}); } /* ]]> */
</script>
</head>
<body>
<p>This page tests the HelloWorld service with Jayrock.</p>
</body>

http://jayrock.berlios.de/

NVelocity

<HTML>
<BODY>
Hello $customer.Name!
<table>
#foreach( $mud in $mudsOnSpecial )
#if ( $customer.hasPurchased($mud) )
<tr> <td>
$flogger.getPromo( $mud )
</td> </tr>
#end
#end
</table>

http://velocity.apache.org/engine/releases/velocity-1.5/user-guide.html

Spring.NET + Jayrock + NVelocity

● Spring.NET
○ http://www.springframework.net/

● Jayrock
○ http://www.castleproject.org/others/nvelocity/index.html

● NVelocity
○ http://www.castleproject.org/others/nvelocity/index.html

NPOI

● When to use it
○ When you need to read or write XLS, DOC, or PPT.
● What it does
○ Exposes an API that can called from a .NET application.
● How it works
○ The API reads and writes the file formats directly.
○ Data access layer.

● http://npoi.codeplex.com/

http://na11.apachecon.com/talks/19459

husted@apache.org
http://www.slideshare.net/ted.husted

.NET @ apache.org

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