Developing User Enhancement Modules in The Adapter Engine: Sap Netweaver Process Integration 7.1

SAP NetWeaver Process Integration 7.
1 Developing User Enhancement Modules in the Adapter Engine
SAP NetWeaver Regional Implementation Group SAP NetWeaver Product Management December 2007
SAP NetWeaver Process Integration 7.1
Benefits
This presenations helps you to: Understand the architecture of SAP PI Adapter Framework Use the SAP NetWeaver Developer Studio to develop and deploy the adapter module Use SAP Partner Connectivity Kit (PCK) to test the adapter module Understand the requirement and steps during the development process Configure the adapter module in the communication channel Monitor the adapter module processing in the Runtime Workbench
Agenda
1. 2. 3. 4.
Adapter Framework Overview Module Development Overview Logging in the Adapter Modules Developing Adapter Modules
Agenda
1. 2. 3. 4.
The SAP PI Adapter Framework
Based on SAP NW Application Server Java Uniform Handling of Deployment, Configuration, Administration, Monitoring and Security Technical Basis for Adapter Engine and SAP Partner Connectivity Kit Adapters run as services within the SAP NW Application Server Java and use the services of the Adapter Framework (for example Queuing and Logging) Usage of open standards: SOAP, JMS, JDBC..
SAP NetWeaver Process Integration 7.1 Architecture

ES Repository / Integration Directory / System Landscape Directory Integration Server
Business Process Engine Integration Engine Optional non-central Adapter Engine
Resource Adapter Resource Adapter Adapter FW Messaging Queuing Security Handling
Adapter Engine (Java SE)
Central Adapter Engine

HTTP/IDoc Adapter Adapter Framework Messaging Queuing Security Handling
Partner Connectivity Kit PCK Configuration

and Monitoring Adapter FW Messaging Queuing Security Handling Resource Adapter
Adapter
File DB JMS SOAP
SAP & Non-SAP System
File/DB/JMS Marketplace 3rd Party Sys.
Applications based on SAP Web Application Server version 6.20 or higher can communicate with the SAP NetWeaver PI in the native XI-SOAP format via proxies. All other applications, including legacy SAP systems (those on Basis releases lower than Version 6.20), communicate with the SAP NetWeaver PI via adapters. SAP provides an Adapter Framework and an Adapter Engine for this communication. SAP NW PI 7.1 introduces a new, Java EE based adapter architecture. The adapter engine is installed centrally on the Integration Server; it can also be installed locally (close to the Business system), but still be configured, managed, and monitored centrally. Additionally, the SAP Partner Connectivity Kit, the toolset for enabling small partners or subsidiaries with no native XML messaging capabilities to communicate with SAP NetWeaver PI, is based on the Adapter Engine.
SAP Partner Connectivity Kit Overview
Supports Smaller Companies / Subsidiaries to exchange XML documents with their business partners / headquarters' SAP PI Large Business Partner / Smaller Company / Subsidiary Headquarters SAP Application SAP / 3rd Party Appl.
SAP PCK
Internet
SAP NW PI
3rd Party Application
Provides a Platform for Development of own JCA Resource Adapters and Adapter Modules SAP PCK
SAP Partner Connectivity Kit can connect smaller companies or subsidiaries to Process Integration for message exchange. SAP PCK is the developing and testing platform for new modules and adapters.
Use Cases for Adapter Module Development
Converting the payload (not covered with standards) Changing the encoding (escaping, de-escaping) Encryption and decryption Creating and merging of additional attachments
Agenda
1. 2. 3. 4.
SAP PI Adapter Standard Modules

AS Java
Your JCA 1.0 Adapter JCA 1.0 SPIVerbind. JCA 1.0 Framework Session ejb Call
R v R> ^ R v ^ R v
Your Protocol <R>

R>
Java-Classes Deployed Java and PIsystemlibraries:

R v
JCA 1.0 CCI Connections
Channel templates define a module chain to be processed by the SAP PI AF Module Processor The default chain can be modified by customers Standard modules can be re-used to access JCA adapters and SAP PI Messaging System
ejb 2.0 Container AF Module Prozessor

R v R v R > AF Modul-
AF Entry ejb
Exit ejb ejb-Call

RServicev
JavaClasses
aii_af_ service_ util.jar etc.
ejb-Call
Session ejb Aufruf
Gener. AF Module ejb
Spezif. AF Module ejb
Aufruf
R>
AS Java System and Add-On Services

<R>
XIMessages
Messag. HTTP(S) Servlet JDBC/ Service (Web Cont.) Open SQL Database (SAP DB, etc.)
AF AF ... Config. Utilities Logtables
The figure shows the modules that are involved in the message exchange. It also shows technical tracing and logging mechanisms. The blocks shown in gray are parts of the Adapter Framework. The white blocks are part of AS Java. You must make the orange blocks available in adapter development. The Adapter Framework mainly consists of Enterprise JavaBeans. As a rule, these are stateless session beans. They communicate with the adapters using the Enterprise JavaBeans container and the JCA framework.
10
Adapter Module Processor
Receiver Direction Asynchronous Communication
Customer-Specific Adapter Modules Standard Adapter Module
Module 1 Messaging System Adapter Module
Module 2 Module 2
Adapter Module JCA 1.0 Adapter Module 1
Sender Direction Asynchronous Communication
For each adapter it is possible to define generic modules in the module processor: You have the possibility to extend the functionality of a specific adapter. The default module configuration for a certain adapter is displayed in the communication channel configuration. Module configuration is defined as message-protocol and adapter type specific. Stateless Sequence matters! Modules are EJBs
11
Adapter Module Chain
Custom modules can be added to default module chains
Additional configuration parameters can be specified each module
You have the option of specifying generic modules for adapters that are configured in the communication channel. These modules equip the adapters with additional functions. If it is not possible to add modules to an adapter, you will not be able to select the Module tab page. The modules that are the basis of the adapter configuration on the Parameters tab page are located in the module processor and are displayed in the module processor once a communication channel has been created.
12
Adapter Module (UML Diagram)
Method called by ModuleProcessor
Access to message Content
Access to adapter configuration
13
Adapter Module (Code Fragment)

public class CreateAttachment implements SessionBean, Module { public ModuleData process( ModuleContext moduleContext, ModuleData inputModuleData) throws ModuleException { Message messageIN = (Message) inputModuleData.getPrincipalData(); XMLPayload xmlPayloadIN = messageIN.getDocument(); String parameter = moduleContext.getContextData("parameter"); } }
14
Agenda
1. 2. 3. 4.
15
Logging
Developers and systems management experts might have different requirements on logging mechanisms. The PI Adapter Framework Logging API supports methods for displaying processing output in the SAP PI Message Display Tool trace output in the SAP NetWeaver Application Server Java The trace output can be maintained by default in the XML configuration file log-configuration.xml or at runtime in the Log Configuration of the SAP NetWeaver Administrator.
16
Logging: Service Trace

SAP NetWeaver Administrator provides a Log Viewer. Trace output is configured in the Log Configurator. Each log destination can be separately displayed and filtered according to user-specific needs.
The Log Viewer can be accessed in the SAP NetWeaver Administrator: Select Availability and Performance Management -> Log Viewer
17
Logging: Service Trace (Code Fragment)

public class CreateAttachment implements SessionBean, Module { private Location loc = null; public ModuleData process(ModuleContext moduleContext, ModuleData inputModuleData) throws ModuleException { try{ String SIGNATURE = "YourSignature"; loc = Location.getLocation(CreateAttachment.class.getName(); loc.entering(SIGNATURE, new Object[] { moduleContext, inputModuleData }); Message messageIN = (Message) inputModuleData.getPrincipalData(); } catch (Exception e) { loc.catching(SIGNATURE, e); loc.errorT(SIGNATURE, "Error occurred"); } }
18
Logging: Audit Log

The SAP PI Message Display Tool provides comprehensive filter mechanisms to find the relevant messages.
For each message content and audit log can be monitored.
19
Logging: Audit Log

For each message an audit log is written that shows processing details (e.g. the executed module chain). SAP PI AF provides standard methods within its logging framework.
20
Logging: Audit Log (Code Fragment)

public class CreateAttachment implements SessionBean, Module { public ModuleData process( ModuleContext moduleContext, ModuleData inputModuleData) throws ModuleException { Message messageIN = (Message) inputModuleData.getPrincipalData(); MessageKey key = new MessageKey(msg.getMessageId(), MessageDirection.OUTBOUND); PublicAPIAccess pa = PublicAPIAccessFactory.getPublicAPIAccess(); AuditAccess audit = pa.getAuditAccess(); audit.addAuditLogEntry(key, AuditLogStatus.SUCCESS, "CreateAttachment: Module called"); } }
21
Agenda
1. 2. 3. 4.
22
Agenda
1. 2. 3.
Adapter Framework Overview Module Development Overview Logging in the Adapter Modules
1. 2. 3.
Introduction Create Adapter Module As an EJB 2.1 Deploy the Adapter Module on the Java EE Server
4.
Developing Adapter Modules
23
Agenda
1. 2. 3.
1. 2. 3.
4.
24
Development Kit and Module Processor
Development Kit for development of additional adapters (partner and customer solutions) Based on SAP NetWeaver Application Server Java and JCA (Java EE Connector Architecture) SAP NetWeaver Certification of Third-Party Adapters Module processor as extension concept Default-Modules per Adapter
25
Development Environment
Adapter development, deployment and testing is possible on a single machine, no full-blown SAP NetWeaver PI is required. Installation of SAP PCK already contains a sample adapter (including adapter metadata) and a sample module that should serve as a starting point. For testing purposes integration scenarios can be configured in SAP PCK (e.g. loopback scenario).
SAP Partner Connectivity Kit

PCK Configuration and Monitoring
Adapter FW Messaging Queuing Security Handling
Resource Adapter
26
Java Doc And Code Samples For Module Development

The Java Doc is contained in the sample adapter JAR file included with the SAP NetWeaver PI/PCK system. Copy the file aii_adapter_sample_ra.jar from <serverDir>\apps\sap.com\com.sap.aii.af.sample.ra\connector\bin\connecto rs\aii_adapter_sample_ra.rar to a separate directory on your computer. <serverDir> is C:\usr\sap\J2E\J01\j2ee\cluster, for example. Extract the JAR file to the same directory. Open index.html to display the Java Doc. The source code for the example adapter module is located in the file, sample_module.jar, under the subdirectory: <serverDir>\apps\sap.com\com.sap.aii.af.sample.module.app\EJBContainer\ applicationjars
27
Java Doc for Module Development
28
Available Documentation
The Adapter Development documentation is available via http://help.sap.com
The documentation for SAP NetWeaver PI 7.1 will be available soon on SAP Help Portal.
29
Agenda
1. 2. 3.
1. 2. 3.
4.
30
Create the Adapter Module EJB
Steps in the SAP NetWeaver Developer Studio

1. 2.
Create an EJB J2EE 1.4 Module Project (to create EJB 2.1) Apply the libraries (at least com.sap.aii.af.lib.mod.jar and com.sap.aii.af.ms.ifc_api.jar) Create a package (in folder ejbModule) Create a stateless session bean Write the code of the Java class Adjust the ejb-jar.xml Adjust the ejb-j2ee-engine.xml Build the EJB archive (JAR)
3. 4. 5. 6. 7. 8.
31
Overview of Usable Libraries
For the module development you have to extract following libraries from your PCK/AF installation
com.sap.aii.af.lib.mod.jar the interface Module com.sap.aii.af.ms.ifc_api.jar dealing with payload and attachments sap.com~tc~logging~java~impl.jar writing trace com.sap.aii.af.svc_api.jar adapter services com.sap.aii.af.cpa.svc_api.jar reading channel entries com.sap.aii.af.ms.ifc_api.jar
You find the libraries here:

com.sap.aii.af.lib.mod.jar: <bin>/ext/com.sap.aii.af.lib/lib com.sap.aii.af.ms.ifc_api.jar: <bin>/ext/bin/interfaces/com.sap.aii.af.ms.ifc/lib sap.com~tc~logging~java~impl.jar: <bin>/system com.sap.aii.af.svc_api.jar: <bin>/services/com.sap.aii.af.svc/lib com.sap.aii.af.cpa.svc_api.jar: <bin>/services/com.sap.aii.af.cpa.svc/lib com.sap.aii.af.ms.ifc_api.jar: <bin>/interfaces/com.sap.aii.af.ms.ifc/lib <bin> = /usr/sap/<SID>/J01/j2ee/cluster/bin
32
Adapter Module EJB Template (1)
package yourPackage; import javax.ejb.CreateException; import javax.ejb.SessionBean; import javax.ejb.SessionContext; import com.sap.aii.af.lib.mp.module.*; import com.sap.engine.interfaces.messaging.api.*;
public class YourClass implements SessionBean, Module{ private SessionContext myContext; public void ejbRemove() { } public void ejbActivate() { }
33
Adapter Module EJB Template (2)
public void ejbPassivate() { } public void setSessionContext(SessionContext context) { myContext = context; } public void ejbCreate() throws CreateException { } public ModuleData process(ModuleContext moduleContext, ModuleData inputModuleData) throws ModuleException { // put your code here return inputModuleData; } }
You only need to apply code to the method process.
34
Code Sample: Adding an Additional Attachment

public ModuleData process(ModuleContext moduleContext, ModuleData inputModuleData) throws ModuleException { try { Message msg = (Message) inputModuleData.getPrincipalData(); TextPayload attachment = msg.createTextPayload(); attachment.setName("Attachment"); attachment.setContentType("text/plain"); attachment.setText("Hello World"); msg.addAttachment(attachment); inputModuleData.setPrincipalData(msg); } catch (Exception e) { ModuleException me = new ModuleException(e); throw me; } return inputModuleData; }
35
The ejb-jar.xml
The ejb-jar.xml file can be generated with the NW Developer Studio.
<?xml version="1.0" encoding="UTF-8"?> <ejb-jar xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" id="ejb-jar_ID" interface generated version="2.1" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd"> names <description>EJB JAR description</description> <display-name>EJB JAR</display-name> <enterprise-beans> <session> <ejb-name>YourEJBName</ejb-name> <home>com.sap.aii.af.lib.mp.module.ModuleHome</home> <remote>com.sap.aii.af.lib.mp.module.ModuleRemote </remote> <local-home> com.sap.aii.af.lib.mp.module.ModuleLocalHome </local-home> <local>com.sap.aii.af.lib.mp.module.ModuleLocal</local> <ejb-class>yourPackage.YourClass</ejb-class> <session-type>Stateless</session-type> <transaction-type>Container</transaction-type> </session> </enterprise-beans> </ejb-jar>
Replace the
The ejb-jar.xml defines the package and class names corresponding to an ejb name. The interface names of the Adapter Module classes are always the standard interfaces of the Adapter Module Development Kit. You find them in the library com.sap.aii.af.lib.mod.jar
36
The ejb-j2ee-engine.xml
Configuration tool in the NW Developer Studio can be used to generate this file. <?xml version="1.0" encoding="UTF-8"?> <ejb-j2ee-engine xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance xsi:noNamespaceSchemaLocation="ejb-j2ee-engine.xsd"> <enterprise-beans> <enterprise-bean> <ejb-name>YourEJBName</ejb-name> <jndi-name>YourJNDIName</jndi-name> <session-props/> </enterprise-bean> </enterprise-beans> </ejb-j2ee-engine>
The ejb-j2ee-engine.xml defines the JNDI name corresponding to an ejb name. The adapter module is called by this JNDI name. Therefore this name has to be set to the module configuration. If you do not define a JNDI name here, the JNDI name is sap.com/<application-name>/<ejb-name> where the application name is set in the application.xml in the EAR.
37
Agenda
1. 2. 3.
1. 2. 3.
4.
38
Files in the SDA/EAR
Besides the JAR file with the Adapter Module classes and the ebj descriptors, there are following files with path META-INF
MANIFEST.MF
Contains the version numbers and the provider names.

SAP_MANIFEST.MF
Contains version numbers, content, and component names, similar to a catalog. The SDM uses this information to manage the deployment information in its database.
application.xml
Contains display names and references to icons if the adapter is displayed with SAP J2EE tools.
application-j2ee-engine.xml
Contains references required during SDM deployment.
If you want to use the trace of the AS Java engine, you have to add the file log-configuration.xml Use the sample module (sample_module.sda) as a template for the settings of your adapter module.
39
Create the Enterprise Application Archive
Steps in the SAP NetWeaver Developer Studio

1. 2. 3. 4. 5.
Create an Enterprise Application Project. Add the EJB module. Adjust the application-j2ee-engine.xml like follows. Build the Application archive (EAR). Deploy the EAR file to the SAP PCK/AE.
40
The application-j2ee-engine.xml
In this file you have to create following references
Reference target engine.security.facade engine.j2ee14.facade com.sap.aii.af.svc.facade com.sap.aii.af.ifc.facade com.sap.aii.af.lib.facade com.sap.base.technology.facade Reference type hard hard hard hard hard hard Reference target-type service library service interface library library Provider name sap.com sap.com sap.com sap.com sap.com sap.com
41
Deploying SAP PI Adapter Components

SAP recommends to use SAP Java Support Package Manager (JSPM) for deployment. Software Delivery Archives (SDA) can contain software components of different types (e.g. applications, libraries). Detailed version information and dependencies to other components simplify program management. You can create SDA files with the Composition Environment Command Line Tool (CECLT), which is part of the SAP NW Developer Studio installation.
42
Deploy the EAR File Using NW Developer Studio

Used mainly for testing purposes
43
Check Deployment Using SAP NetWeaver Administrator
Check, if the EJB is deployed and active
Open the SAP NetWeaver Administrator. Select Configuration Management -> Infrastructure -> Application Modules Search your module by name.
44
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SAP NetWeaver Process Integration 7.

1 Developing User Enhancement Modules in the Adapter Engine

SAP NetWeaver Process Integration 7.1

SAP NetWeaver Process Integration 7.1

SAP NetWeaver Process Integration 7.1

SAP NetWeaver Process Integration 7.1

The SAP PI Adapter Framework

SAP NetWeaver Process Integration 7.1

SAP NetWeaver Process Integration 7.1 Architecture

Adapter Engine (Java SE)

Central Adapter Engine

Partner Connectivity Kit PCK Configuration

File DB JMS SOAP

SAP & Non-SAP System

File/DB/JMS Marketplace 3rd Party Sys.

File/DB/JMS Marketplace 3rd Party Sys.

File/DB/JMS Marketplace 3rd Party Sys.

SAP NetWeaver Process Integration 7.1

SAP Partner Connectivity Kit Overview

SAP NetWeaver Process Integration 7.1

Use Cases for Adapter Module Development

SAP NetWeaver Process Integration 7.1

SAP NetWeaver Process Integration 7.1

SAP PI Adapter Standard Modules

Your Protocol <R>

Java-Classes Deployed Java and PIsystemlibraries:

JCA 1.0 CCI Connections

ejb 2.0 Container AF Module Prozessor

Exit ejb ejb-Call

aii_af_ service_ util.jar etc.

Session ejb Aufruf

Gener. AF Module ejb

Spezif. AF Module ejb

AS Java System and Add-On Services

AF AF ... Config. Utilities Logtables

SAP NetWeaver Process Integration 7.1

Adapter Module Processor

Receiver Direction Asynchronous Communication

Customer-Specific Adapter Modules Standard Adapter Module

Module 1 Messaging System Adapter Module

Adapter Module JCA 1.0 Adapter Module 1

Sender Direction Asynchronous Communication

SAP NetWeaver Process Integration 7.1

Adapter Module Chain

Custom modules can be added to default module chains

Additional configuration parameters can be specified each module

SAP NetWeaver Process Integration 7.1

Adapter Module (UML Diagram)

Method called by ModuleProcessor

Access to message Content

Access to adapter configuration

SAP NetWeaver Process Integration 7.1

Adapter Module (Code Fragment)

SAP NetWeaver Process Integration 7.1

SAP NetWeaver Process Integration 7.1

SAP NetWeaver Process Integration 7.1

Logging: Service Trace

SAP NetWeaver Process Integration 7.1

Logging: Service Trace (Code Fragment)