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Microsoft Dynamics AX 2012 R2 Services
Microsoft Dynamics AX 2012 R2 Services

Microsoft Dynamics AX 2012 R2 Services: Using Microsoft Dynamics AX to create and run your own services is made plain sailing with this in-depth tutorial. Covering everything from document services to building customized services and batch processing, it's the complete guide.

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Microsoft Dynamics AX 2012 R2 Services

Chapter 2. Service Architecture and Deployment

There is always more than one solution to a problem. This is certainly true when designing solutions for your integration scenarios with Microsoft Dynamics AX 2012. As we learned in the previous chapter, there are a lot of options to choose from, both for deployment and development of services. In this chapter, we will focus on the options that are available when deploying services.

The following topics are covered in this chapter:

  • WCF: Windows Communication Foundation provides the basis for building, configuring, and deploying services with Microsoft Dynamics AX 2012, so we will discuss the key concepts that are related to WCF.

  • Service deployment: Deployment of services is enabled by integration ports. You will learn how to create, configure, and deploy these integration ports.

  • Service generation: There is a lot going on when services are deployed. We will explore the artifacts that are generated and learn about Common Intermediate Language.

Introducing WCF


Windows Communication Foundation (WCF) was introduced with the release of .NET Framework 3.0. This release of the .NET framework was in essence Version 2.0 along with four additional components:

  • Windows Presentation Foundation (UI graphical platform)

  • Windows CardSpace (identity management platform)

  • Windows Workflow Foundation (workflow platform)

  • Windows Communication Foundation (communication platform)

Existing technologies

WCF is meant to provide a unified programming model to build, configure, and deploy services on distributed networks. It combines well-known technologies that have been around for some time, such as .NET remoting, Web Services Enhancements (WSE), MSMQ, ASMX, and message-oriented programming.

Note

The preceding diagram is provided courtesy of wcftutorial.net. If our introduction to WCF makes you curious about WCF and its technologies, this website does a great job of explaining it in detail.

The ABC of WCF

An elaborate explanation of all of the features that WCF...

Service deployment


Microsoft Dynamics AX 2012 does a lot to simplify service deployment; not so much by reducing the number of concepts, but by gradually presenting these concepts to users when needed. This is immediately obvious when you look at the setup menu for services and AIF. When you navigate to System administration | Setup | Services and Application Integration Framework, you only see four options. The first two are the most important: inbound ports and outbound ports. These two types of ports are known as integration ports.

Integration ports provide a way to group services and manage them together. They have at least the following properties:

  • One or more service operations

  • A direction that is inbound or outbound

  • A category that is either basic or enhanced

  • An adapter

  • The address of the port

We will discuss these properties and others in detail.

Service operations

An integration port contains one or more service operations. These must be operations from services that all have the same type...

Bindings


When a client and service communicate, there are several aspects to the communication.

  • Synchronous/asynchronous: Messages can be used in a request/response pattern or they can be used in asynchronous communication depending on whether the client waits for the response or not.

  • Transport protocol: The protocol used for transporting the messages can vary depending on the needs. Protocols such as HTTP, Transmission Control Protocol (TCP), Microsoft Message Queuing (MSMQ), and Inter-process communication (IPC) can be used.

  • Encoding: You have a choice on how to encode the messages. You can choose to use plain text if you want maximum interoperability. Alternatively, you can use binary encoding to speed up performance, or using the Message Transport Optimization Mechanism (MTOM) to handle larger payloads.

  • Security: There are also some options that can be used to handle security and authentication. Security can be implemented at the transport level, at the message level, or can be skipped...

Adapters


Microsoft Dynamics AX 2012 allows you to exchange messages using various transport protocols. This is enabled by the use of adapters. An adapter has an adapter type that determines if it can be used on an inbound port, an outbound port, or both. The standard adapter types that are used are send and receive, receive or send, and receive and respond. The naming of these types is rather confusing, but the following table shows how this translates to inbound or outbound ports:

Adapter name

Adapter type

Inbound

Outbound

Mode

NetTcp

Send and receive

Yes

No

Synchronous

HTTP

Send and receive

Yes

No

Synchronous

Windows Azure Service Bus

Receive and respond

Yes

No

Synchronous/Asynchronous

Filesystem adapter

Receive or send

Yes

Yes

Asynchronous

MSMQ

Receive or send

Yes

Yes

Asynchronous

Adapters also have an address property. This address is a URI that refers to the destination or source location of the port. Depending on the adapter, this is a URL, a filesystem...

Service generation - under the hood


While services are being deployed when activating integration ports, there is more going on than meets the eye. A service generator written in X++ kicks in and creates the artifacts needed by the AOS to host the WCF services. These artifacts are files containing managed code (C#) and contain the service implementation, message contracts, and a WCF configuration. To explain this, we will take a closer look at one of the out-of-the-box integration ports: the DocumentHandling port.

Generated artifacts

When you take a look at the DocumentHandlingService service node in the AOT, you will find that this service has one method called Create(). So, when we deploy this service, we expect the following generated artifacts to be able to host the WCF service:

  • A service contract that contains the service's interface

  • An operation contract for the Create service operation

  • Request and response message contracts for each operation used for implementing the Create operation

  • A...

The power of CIL


In Microsoft Dynamics AX 2012, code can be compiled to CIL and run in the .NET CLR. But what does CIL mean and what is it used for?

Common Intermediate Language (CIL) is in essence an object-oriented assembly language. It complies with the Common Language Infrastructure (CLI), which is a specification that was developed by Microsoft to describe a set of rules that programming languages need to comply with when they are targeting the CLI. One of the most important aspects of the CIL is that it is a platform- and CPU-independent instruction set. This enables the code to be executed on different environments as long as they comply with the CLI specification.

The following diagram shows that the languages are first compiled in CIL, after which the Common Language Runtime (CLR) compiles the platform-independent CIL code into machine-readable code:

As you can see, Microsoft Dynamics AX 2012 does not compile the X++ code directly to CIL. It is compiled to p-code, which can be interpreted...

Summary


In this chapter, we familiarized ourselves with the service architecture. We clearly saw that Microsoft has put a lot of effort into providing us with a simplified administration process for services by introducing integration ports. Because a large part of the architecture is built on WCF, at least a basic understanding of the technologies that are used in WCF is needed.

To enable all of these technologies in combination with Microsoft Dynamics AX 2012, compilation into CIL was introduced. This allows the X++ code to be compiled into CIL and benefit from all of the advantages CIL has to offer.

In the next chapter, we will start digging deeper into the AIF services and get some hands-on time by creating our own AIF services.

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What you will learn

  • Use the AIF Document Service Wizard
  • Create custom services in X++
  • Configure enhanced integration ports
  • Deploy services using a variety of protocols
  • Consume your services in .NET
  • Consume external web services in X++
  • Use the SysOperation framework to create batch processes
  • Set up tracing and debugging
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Publication date : Mar 26, 2014
Length: 264 pages
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Language : English
ISBN-13 : 9781782176725
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ISBN-13 : 9781782176725
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Table of Contents

9 Chapters
Getting Started with Microsoft Dynamics AX 2012 Services Chevron down icon Chevron up icon
Service Architecture and Deployment Chevron down icon Chevron up icon
AIF Document Services Chevron down icon Chevron up icon
Custom Services Chevron down icon Chevron up icon
The SysOperation Framework Chevron down icon Chevron up icon
Web Services Chevron down icon Chevron up icon
System Services Chevron down icon Chevron up icon
High Availability Chevron down icon Chevron up icon
Tracing and Debugging Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.6
(5 Ratings)
5 star 80%
4 star 0%
3 star 20%
2 star 0%
1 star 0%
Giancarlo Ferrara Jun 07, 2014
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The ability of implementing new services using Microsoft Dynamics AX 2012 is one of the "need-to-have" skills of any developer.This book drives you into the art of creating, deploying and consuming services.It is a must-to-have on top of your desk, full of useful example and how-to tips for fixing configuration errors.I was able to implement my first oData service is a very short time.The last chapters introduce to High availability, how to configure AX and how to trace and debug the CIL compiled code.It is well written, full of examples and figures and makes you able to finish complex tasks easierI strongly suggest buying this book: it is really worth the money you pay.
Amazon Verified review Amazon
Umesh Pandit Jun 14, 2014
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This books gives real world scenarios Microsoft Dynamics AX 2012 R2 Services, well written by authors with good number of Microsoft Dynamics AX contributors!
Amazon Verified review Amazon
Amazon customer Jul 02, 2014
Full star icon Full star icon Full star icon Full star icon Full star icon 5
It was a great coincidence that this book came out just before I was tasked with creating a couple of Dynamics AX AIF services. Every Dynamics AX developer knows that Microsoft’s own documentation is often incomplete and scattered around so it’s hard to get a full picture of how to get from nothing to your desired result.This book saved me a lot of time providing all necessary information to create the end result I needed.The book is greatly structured. It starts out with an introduction into SOA which is great for new developers. Next it gradually brings you into the world of Dynamics AX service implementation. It gives thorough explanation of how to set up services in the environment. Then it explains how to create two major types of AIF services – a document service and a custom service. A separate chapter describes all necessary details on how to use system services and includes a number of samples.Honestly I would expect the authors to stop right here – but they didn’t. They added a whole chapter on how to use the new SysOperation framework which is great even for developers who don’t need to touch AIF. There’s a chapter on High Availability that will appeal to system administrators and another one for Tracing and Debugging.Overall it’s a great book that a lot of audience will find very relevant to their daily tasks.In addition, Packt Publishing often runs eBook sales and there’s one going on right now so jump on it!
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J.Lopez May 02, 2014
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book is clearly written with great contributors and a great author that understand Microsoft Dynamics and gives real world scenarios. Great Book.
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Lars Sjöström Jun 01, 2018
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
Well. A ok book. Not enough pictures and not enough tips on strange behaviour that exists in SSRS
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