Modular Enterprise Systems - An Introduction

Integrating Architecture
Apps for the Enterprise
A unified Modulesystem
For Distributed Enterprise Applications
An Introduction

Just any point in time
in any company
e.g. at
com.my.company
© 2014 Andreas Weidinger at Integrating Architecture de Seite: 2

The IT landscape of
com.my.company
Frontends
FTP Server
HOST
CRM SCM
UNIX Server
IRX CMG VCX
HR FI
Backend
SAP
MQ
Standalone AS-1.0 + AS-3.2
CRM-OV KM-UX
W
F
M
CRX PM-UX
SFE
CM
DOC
KM KTDB DWDB
IDB KMX-DB
Service Bus (ESB)
AFR
AMS
E
X
T
E
R
N
A
L
S
= com.my.XML1

A department has a new requirement
and the IT is asked to implement it
e.g.
a function: to adjust customer data

Where and How
is the new requirement implemented?
Frontends
FTP Server
HOST
CRM SCM
UNIX Server
IRX CMG VCX
HR FI
Backend
SAP
MQ
Standalone AS-1.0 + AS-3.2
CRM-OV KM-UX
W
F
M
CRX PM-UX
SFE
CM
DOC
KM KTDB DWDB
IDB KMX-DB
Service Bus (ESB)
AFR
AMS
E
X
T
E
R
N
A
L
S
= com.my.XML1

Where and How

Where and How
Some possible scenarios are
the function
is part of a dedicated system
is part of a dedicated system but with interfaces
affects the interna of several systems
is an independent service
is a linked service
… etc.

However
in a modular world
the answer is completely different

In a modular world the answer is:
A Module or a Moduleversion
in a Modulerepository

In a modular system there are two
universal, central elements
Module – and – Repository
1 - of course there might be more than one Repository
1

What is a Module?
And what is a Module Repository?
a central directory
with subdirectories
a Modulefile with a
unique Modulenamen
A module is a
defined
business or technical
functionality
Module Repository (/var/myrepoXY/)
System 1
com.my.CustomerAdjustment-1.0.0
com.my.ModuleXY-2.0.1
… etc.
com.my.xy.ServiceZ-3.5.0
System N
… etc.

The unique Module(name) identifies
all necessary artefacts in all areas
com.my.CustomerAdjustment-1.0.0
budgets und controlling
jobs or tasks in planning
specification and requirementlist
softwareproject
repository in a version control system
executable module
test, acceptance, operation, …, … etc.
everything targets the same Module

In a modular systemlandscape modules are
the unified view of all participants

Modules may represent any part or requirement
of a system landscape
- Modules are able to scale free – from a whole system to a single function

That's nice - but until now
it is no usable software
in an application landscape!

Just two things are missing for usable software
a Manager that makes modules available
and Middlware on which this manager runs
Module Repository Service Broker
dynamic JEE Server
Manager
Clients
manager.getModule(
„com.my.ServiceXY“
)
module.doBizzMethod

That looks mutch like a usual,
but proprietary JEE Bus/Broker System
with all the problems of an JEE application!?!
But it isn‘t!

The Broker is NOT a usual JEE application
and therefore also without its problems
because …
the broker does NOT contain any business logic
it never has to be changed or extended
it can be integrated in any system
it is just about 60 KB (Kilobyte) small
it is just Middleware – NOT an application
the actual application software
are only the Modules
and they are technology and platform independent

The Broker is NOT a usual JEE application
and therefore also without its problems
The Broker just realises the internal middleware
adapter of the dynamic Module Manager
Service Broker als
Modul Repository Clients
neutrale Middleware API
manager.getModule(
„com.my.ServiceXY“
)
module.doBizzMethod
Session Services
Web Services
… etc.
a client just knows a manager that transparently
provides modules

The advantages of this design
no Deployment or special Packaging
no complex designs or transformations
no software version proplematics
no binding to JEE processes or technologies
ideal for agile, continuous processes
unbound system-, technology- and cross platform
Functions and Services
and at the same time neutral, clearly encapsulated
and defined modules
that are versioned and exchangeable

Which protocols and data formats
are supported?
Client Server communication
RMI - resp. all protocols supported by EJBs
JMS, HTTP, WebService, WebSocket, REST,AJAX
… every protocol that is available in JEE or JSE
or for which an adapter exsists
Dataformats
… any format that can be processed in java

And the client side?

And the client side?
Modules are the same for Client and Server
The Modulesystem does NOT distinguish
between client and server
A Repository directory with Modules and
a Modulemanager are a modular system
tha's all - on a client or on a server

Integrating Architecture
IT Consulting
Andreas Weidinger
Mobile: 0160 97627398
Mail: info@integrating-architecture.de
Home: www.integrating-architecture.de

Backup – Unification
Enterprise Apps modules are the same from the specification to
operation. In this way they unify all technologies and platforms
in one evolving architecture.
Unification of Technologies and Platforms
Smart Client
Modules
Web Client
Modules
Apps for the Enterprise
Mobile Client
Modules
Rich Internet Application
Server
Modules
Java SE + EE HTML / JavaScript
Windows Linux / Unix
Mobile
Central Module
Repository
- Modules
- Services
- Rules
1 - The presentation as a layer is just vor illustration purpose. Enterprise Apps are NO technical layer
and also NO technical object types.
1
© 2014 Integrating Architecture Seite: 25

Backup – Traceability
Transparency, reliable Management and Governance through
Unique linking and mapping of all parts of an IT Landscape
Arbitrary patrs and functional requirements
for Services and Systems …
…are represented and realized
by unique Modules in a central Repository
Module Repository
System-CRM
CRM ModuleXY-1.0.0
CRM ModuleXY-2.0.0
CRM Module4711-1.0.0
Module SAP Service-
2.1.0
Module Messaging-1.0.5
Module KT-DB-3.0.0
… etc.
IT Systemlandscape
Management and the Service Broker (both free of business logic) provide the Modules On-Demand
Projects
1
1 -That means project structures in development like IDE or SCM projects – not organizational management projects, they stay independent

Backup – Client Server Architecture
Entire separation of business logic from platform and technology
Server Server oder File Server
JEE Application Server
ISA Service Broker Application
ISA Module System
calls
knows
ISA JEE Adapter
SF Session
SL Session
Servlet
MDB/JMS
WebService
4
delegates
central
Repository
: Module resp. App
: Object
: Call
1
3
2
Web Client network
uses
Manager
http
Connector
multi
protocol
Connector
multi
protocol
automated, system- and user specific configuration und replication
Rich Internet Application
Service Consumer
Any Application
Smart Client
ISA Modul System
local
1‘
Repository
Manager
calls
knows
- Business implementation only resides in modules resp. apps
- The central repository is a Single Point of Access, it contains
all versions of all modules divided into systems – for clients and server
5
1
2 - The JEE Adapters are generic. They contain NO business code and always delegate to the module management
3 - The Service Broker resp. the corresponding JEE application(.ear) is only about 50 KB in size
4 - The module system is totally encapsulated an runs in its own classloader context
: optional
5 - The ISA Smart Client is not mandatory. Any application can access the broke

Backup – JEE Vulnerabilities
JEE based systems are monoliths by specification
because the deployment model only knows closed applications
JEE violates the SoC princip
1
because JEE forces the implementation of business requirements
as platform components (e.g. as WebService, EJB etc.)
JEE components are bind to distinct distributed communication
technologies (e.g. RMI, HTTP, JMS etc.)
JEE does not provide a usable module system and its container
structure hinders the use of external module systems
The problem with JEE is NOT the concept of an application server providing a
distributed infrastructure – the problem is, that JEE tries to claim any purpose
and binds applications to its monolithic platform and its technologies.
1 - Separation of Concerns – at this point separation of business logic and technology

Modular Enterprise Systems - An Introduction

Empfohlen

Empfohlen

Weitere ähnliche Inhalte

Was ist angesagt?

Was ist angesagt? (20)

Andere mochten auch

Andere mochten auch (7)

Ähnlich wie Modular Enterprise Systems - An Introduction

Ähnlich wie Modular Enterprise Systems - An Introduction (20)

Kürzlich hochgeladen

Kürzlich hochgeladen (20)

Modular Enterprise Systems - An Introduction