WTUI16 - Integration Your Way with IBM Integration Bus

Integration your way

John Hosie, Product architect for IBM Integration Bus

Please Note IBM’s statements regarding its plans, direc/ons, and intent are subject to change or withdrawal without no/ce at IBM’s sole discre/on. Informa/on regarding poten/al future products is intended to outline our general product direc/on and it should not be relied on in making a purchasing decision.

The informa/on men/oned regarding poten/al future products is not a commitment, promise, or legal obliga/on to deliver any material, code or func/onality. Informa/on about poten/al future products may not be incorporated into any contract. The development, release, and /ming of any future features or func/onality described for our products remains at our sole discre/on

Performance is based on measurements and projec/ons using standard IBM benchmarks in a controlled environment. The actual throughput or performance that any user will experience will vary depending upon many factors, including considera/ons such as the amount of mul/programming in the user’s job stream, the I/O configura/on, the storage configura/on, and the workload processed. Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.

Agenda

§ When integration needs customization

§ Overview of common languages

§ Discussion on IBM’s support for each

§ Summary

Simple and productive

Patterns

Patterns provide reusable design

with points of variability

With integration development so simple, why am I standing up at #WTUDE2014 talking about programming languages?

Sometimes, it needs

just a little tweak

Reasons to consider programming environments and languages

§  Customize to address a unique or specific requirement – As with all areas of IT, there are occasions when the out of the box solutions do not quite

address all details of the requirement. Custom code is programmed into the integration flows to resolve these cases.

§  Re-use of existing integration assets – For example, in cases where a previous solution was developed on another integration

platform, there is a desire to retain some components, rather than develop new.

§  Connecting to existing applications – This is a special type of re-use where the component being re-used is an interface that is

described in a particular programming language.

§  Custom tools to manage and operate the integration solution – For example, to embed to controls for the integration into an existing dashboard or to

program automated deployement

When programming languages matter

§ Connecting to existing applications

§ Customize bus to address a unique requirement

§ Re-use of existing integration assets

§ Custom admin tools

Universal and Independent Goes with anything but depends on nothing

General purpose

Transformation / Query

Other domain specific languages

Business

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

.NET Java

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

.NET Java

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

RPG BPEL

XQUERY

.NET Java

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

RPG BPEL

XQUERY

COBOL .js

BPMN BAL ABAP

(E)SQL

C/C++ Ruby

RPG BPEL

XPATH XSLT XQUERY

COBOL .js

BPMN BAL ABAP

XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

(E)SQL

COBOL .js

(E)SQL XPATH XSLT

C/C++ Ruby

XQUERY

BPMN BAL ABAP RPG BPEL

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

COBOL .js

BPMN BAL ABAP

(E)SQL XPATH XSLT

C/C++ Ruby

RPG BPEL

XQUERY

IIB Support for each language

Java Integrated debugger

Java JAXB Interface

Java JDBC Connection Management

Java Support for version control

Java Conversion Tools

Java Other java apis in IIB

CMP API for java based admin apps AppDev for programmatic message flow creation or inspection Pattern authoring for custom pattern generation Eclipse extension points for custom UX on patterns and nodes

.NET CLR Hosted in IIB Runtime

.NET Customize message flow with .NET

.NET Templates for IIB Nodes

.NET Develop in Visual Studio

.NET Hot swap your assemblies

1: Build your assembly in Visual Studio

2: .NET Compute Node points to the assembly on disk – Deployed as part of a flow

3: Test flow

4: Rebuild in Visual Studio after changes

5: Re-test flow – No re-deploy / restart needed

“Rebuild”

.NET Reuse existing code from ESQL

.NET 3 click Mobile App

ESQL Introduction

§  Excellent for database interaction

§  Syntactically similar to SQL

§  Invoke static Java methods and database stored procedures

§  Supports declarative and procedural programming styles

§  Powerful SELECT statement can be applied to messages as well as database tables (or a mix of the two at the same time – can even be nested!)

§  Access to all message domains

§  Can address all message headers and environment trees

§  Toolkit support with editor for syntax highlighting and context assist

§  ESQL debugger integrated with Flow Debugger

ESQL SQL + Procedural Extensions

§  Typed user defined variables and constants DECLARE var1 CHARACTER 'Hello World'; DECLARE var1 CONSTANT CHAR 'Hello World'; –  If not initialized they are initialized to NULL for you

§  Data types CHARACTER DECIMAL FLOAT INT BIT BLOB BOOLEAN

§  Data and time DATE TIME TIMESTAMP INTERVAL GMTTIME GMTTIMESTAMP

§  Operators – For manipulation and comparison of variables, etc BETWEEN IN LIKE IS (NOT)

§  Conditional constructs IF, ELSEIF, ELSE, CASE, WHEN

§  Several looping constructs WHILE, REPEAT, LOOP, FOR

§  Functions – Over 80 built-in functions SUBSTRING LENGTH UPPER CONTAINS STARTSWITH RAND ROUND CEILING FLOOR

ESQL Functions and Procedures

§  Main() – the entry point for the Compute node CREATE FUNCTION Main() RETURNS BOOLEAN BEGIN ...

SET OutputRoot.XMLNSC.Money.Amount = twice(myInt); CALL multiplyBy2(myInt);

... RETURN TRUE; --causes message propagation END;

§  User-defined functions CREATE FUNCTION twice(IN p INTEGER) RETURNS INTEGER BEGIN RETURN p * 2; END; CREATE PROCEDURE multiplyBy2(INOUT p INTEGER) BEGIN SET p = p * 2; END;

ESQL Working with Messages

§  Field References –  Path syntax to address the tree elements –  Starts with ‘correlation name’ to identify root of tree

SET OutputRoot = InputRoot; -- copies the whole message

SET OutputRoot.MQMD = NULL; -- removes the MQMD header

SET OutputRoot.XML.doc.title = -- will generate the output InputBody.session[4].title; -- tree if it doesn’t exist SET OutputRoot.XML.Library.Publication[] = InputBody.library.books.book[] -- copies all elements (deep copy)

ESQL Transformation using SELECT

§  The SELECT implicitly loops over the repeating ‘book’ element in the input message – A ‘Publication’ element is created in the output for each one

§  The children elements of ‘book’ are mapped – Element names are changed (‘title’ -> ‘BookTitle’, etc) – Values are copied (deep copy) – Arrays and structures are built (author[] -> Authors.Name[]) – Note that nested repeating structures can be transformed with nested SELECTS

SET OutputRoot.XML.Library.Publication[] =

SELECT BOOK.title AS BookTitle,

BOOK.author[] AS Authors.Name[],

BOOK.isbn AS ISBN,

BOOK.price AS Price

FROM InputBody.library.books.book[] AS BOOK;

ESQL Database Access

§  SELECT statement –  Creates an entire message tree from a database query SET OutputRoot.XMLNSC.Response.Services.Service[] = (SELECT P.SVCCODE AS Code, P.SVCDESC AS Description FROM Database.SERVICES as P);

§  INSERT statement –  Allows you to add a row to a database table INSERT INTO Database.Prices(ITEM, ITEMPRICE) VALUES (Body.Msg.Item, Body.Msg.ItemPrice);

§  UPDATE statement –  Changes one or more existing rows in a database table UPDATE Database.Prices AS P SET ITEMPRICE = Body.Msg.ItemPrice WHERE P.ITEM = Body.Msg.Item;

§  DELETE statement –  Removes one or more existing rows in a database table DELETE FROM Database.{DSN}.{Schema}.Prices AS P WHERE P.ITEM = Body.Msg.Item;

.js SDK Generation

.js Custom dashboards

this.mqttClient = new Messaging.Client( host, port, clientId);

this.mqttClient.subscribe("$SYS/Broker/MYNODE//Statistics/JSON/Resource/#/“…

JSON{ }

R R Serve node

Highlights of other languages

§  C – C header file importer for DFDL – C API for user defined nodes, parsers and user exits

§  COBOL – Copybook importer for DFDL – CICS Request and IMS Request node

§  PHP – PHP node for transformation/routing/connectivity – PHP support in pattern authoring for template based generation

§  Built in node for XSLT – Uses xalan XSL processor – Compiles and caches stylesheets

Highlights for more other languages

§  Ruby – Ruby based recipes for Chef scripts

§  BPMN2 –  Import process definitions from IBM BPM – Publish Integration Services to process definitions

§  BAL – Embedded rules execution engine – Rules can be authored in IIB and deployed with bar file – Author in Decision Center and deploy via Decision Server for central BRMS control

§  ABAP – Discover BAPI interface for ABAP callout to message flow

Summary § Keep it simple, if possible

§ When customization is justified, the choice is yours

§ Watch this space for more in future

§ Tell us if we are missing anything 65

Thank You !!!!

For Addi5onal Informa5on

l  IBM Training hKp://www.ibm.com/training

l  IBM WebSphere

hKp://www-‐01.ibm.com/soNware/be/websphere/ l  IBM developerWorks

www.ibm.com/developerworks/websphere/websphere2.html l  WebSphere forums and community

www.ibm.com/developerworks/websphere/community/

WTUI16 - Integration Your Way with IBM Integration Bus

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