Distributed Systems Architecture

A Middleware Approach

By: Puder

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Paperback | 16 November 2005

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344 Pages

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23.5 x 19.05 x 2.54

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Middleware is the bridge that connects distributed applications across different physical locations, with different hardware platforms, network technologies, operating systems, and programming languages. This book describes middleware from two different perspectives: from the viewpoint of the systems programmer and from the viewpoint of the applications programmer. It focuses on the use of open source solutions for creating middleware and the tools for developing distributed applications. The design principles presented are universal and apply to all middleware platforms, including CORBA and Web Services. The authors have created an open-source implementation of CORBA, called MICO, which is freely available on the web. MICO is one of the most successful of all open source projects and is widely used by demanding companies and institutions, and has also been adopted by many in the Linux community.

* Provides a comprehensive look at the architecture and design of middlewarethe bridge that connects distributed software applications
* Includes a complete, commercial-quality open source middleware system written in C++
* Describes the theory of the middleware standard CORBA as well as how to implement a design using open source techniques

Industry Reviews

"Einstein famously posited, 'Everything should be made as simple as possible, but not simpler.' This modern corollary to Occam's Razor is often honored in the breach, especially the final three words, and especially in the IT industry. Distributed systems, like security and error handling, are inherently difficult, and no amount of layered abstraction will overcome that simple fact. A deep understanding of what makes distributed systems architecture different from monolithic systems architecture is critically important in a networked world of services such as that promised by Service Oriented Architecture, and Puder, Romer and Pilhofer deliver that deep understanding in a straightforward, step-by-step fashion, from the inside out - as simple as possible, but not simpler. Every application developer today is a distributed systems developer, and this book therefore belongs on the bookshelf of every developer, architect and development manager." - Richard Mark Soley, Ph.D., chairman and CEO, Object Management Group, Inc.

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You Can Find This Book In

Non-Fiction Computing & I.T.Computer Programming & Software Development Object-Oriented Programming or OOP Software Engineering Engineering & Technology Technology in General Programming & Scripting Languages Computer Hardware Grid & Parallel Computing Computer Science Computer Architecture & Logic Design

Parallel Processing

About the Authors	p. viii
Preface	p. ix
Introduction	p. 1
Infrastructures for Distributed Applications	p. 1
Thematic Organization	p. 3
Target Group	p. 3
Chapter Overviews	p. 4
Ancillary Materials	p. 5
Basic Concepts	p. 7
Distributed Systems	p. 7
Characterization	p. 7
Transparency	p. 9
Communication Mechanisms	p. 10
Client/Server Model	p. 12
Failure Semantics	p. 14
Object Model	p. 16
Characterization	p. 16
Terminology	p. 17
Middleware	p. 21
Middleware Tasks	p. 21
The Structure of a Middleware Platform	p. 22
Standardization of a Middleware	p. 23
Portability and Interoperability	p. 24
Sample Application	p. 25
The Account Example	p. 25
C++ Implementation	p. 27
Distribution of the Sample Application	p. 29
Summary	p. 30
Introduction to CORBA	p. 33
Object Management Architecture	p. 34
Overview of CORBA	p. 35
CORBA Object Model	p. 37
Interface Definition Language	p. 37
IDL-Language Mappings	p. 38
Object Request Broker	p. 38
Invocation and Object Adapters	p. 39
Interoperability	p. 39
The Creation Process of a CORBA Application	p. 40
Application Development in C++	p. 42
IDL Specification	p. 42
IDL Language Mapping for C++	p. 43
C++ Server Implementation	p. 44
C++ Client Implementation	p. 48
Compiling and Executing the Application	p. 50
Compiling the Application	p. 50
Executing the Application	p. 51
Application Development in Java	p. 53
Java Server Implementation	p. 53
Java Client Implementation	p. 56
Compiling and Executing the Java Implementation	p. 56
The Bootstrapping Problem	p. 57
File-Based Bootstrapping	p. 58
Object URLs	p. 58
Command Line Arguments	p. 58
Naming Service	p. 59
Overview	p. 59
Name Server Daemon	p. 60
Example	p. 61
Summary	p. 64
[mu]ORB	p. 65
[mu]ORB Architecture	p. 65
Transport Layer	p. 67
Presentation Layer	p. 70
Value Ranges of Types	p. 70
Representation of Type Instances	p. 71
Modeling of the Presentation Layer	p. 74
Interoperability Layer	p. 75
Protocol for Remote Operation Invocation	p. 75
Structure of Protocol Data Units	p. 77
Modeling of Protocol Data Units	p. 79
Proxies	p. 81
Object Services	p. 83
Life Cycle of an Object	p. 83
Object References	p. 84
Services on the Server Side	p. 86
Summary	p. 88
ORB Design	p. 91
ORB Functionality	p. 92
ORB Architectures	p. 93
Design of Mico's ORB	p. 94
Invocation Adapter Interface	p. 95
Object Adapter Interface	p. 98
Invocation Table	p. 99
Scheduler	p. 100
Object Generation	p. 106
Bootstrapping	p. 106
Dynamic Extensibility	p. 108
Summary, Evaluation, and Alternatives	p. 108
Interoperability	p. 111
Model	p. 111
Inter-ORB Protocols	p. 113
Interoperable Object References	p. 114
General Inter-ORB Protocol	p. 115
Environment-Specific Inter-ORB Protocols	p. 116
Design of Mico's Interoperability	p. 117
Framework	p. 117
GIOP	p. 121
Summary, Evaluation, and Alternatives	p. 124
Object Adapters	p. 125
Terminology	p. 125
Functionality	p. 127
Object Management	p. 128
Servant Management	p. 130
Generation of Object References	p. 130
Mapping Objects to Servants	p. 131
Execution of Method Invocations	p. 131
The Portable Object Adapter	p. 133
Overview	p. 133
Policies	p. 135
POA Manager	p. 137
Request Processing	p. 138
Persistence	p. 141
Design of Mico's POA	p. 143
Object Key Generation	p. 144
Persistence	p. 146
POA Mediator	p. 146
Collocation	p. 149
Invocation Adapters	p. 153
Functionality	p. 153
Representation of IDL Data Types	p. 154
Type Checking	p. 155
Dynamic Invocation Interface	p. 156
Static Invocation Interface	p. 157
Design of Mico's DII	p. 159
Design of Mico's SII	p. 161
Summary	p. 162
IDL Compiler	p. 163
Invocation Adapters	p. 163
Dynamic versus Static Invocation Adapters	p. 164
Support of Static Invocation Adapters	p. 165
Mico's Static Invocation Adapter	p. 166
Compiler Fundamentals	p. 168
Formal Languages and Grammars	p. 168
Parse Trees	p. 170
Structure of a Compiler	p. 170
Abstract Syntax Tree for IDL Specifications	p. 172
Mico's IDL Compiler	p. 175
Class Structure	p. 175
Front End	p. 177
Back End	p. 179
Summary, Evaluation, and Alternatives	p. 180
CORBA and Beyond	p. 183
CORBA Components	p. 183
Component-Based Development	p. 183
The CORBA Component Model	p. 185
An Example Component	p. 192
Implementation Overview	p. 199
Discussion	p. 201
Web Services	p. 206
Overview of XML	p. 207
Service Descriptions through WSDL	p. 208
Server-Side Mapping	p. 211
Interoperability through SOAP	p. 213
Service Lookup through UDDI	p. 214
CORBA or Web Services?	p. 216
Middleware for Ubiquitous Computing	p. 217
Ubiquitous Computing in a Nutshell	p. 217
Middleware Challenges	p. 219
Case Study: Sensor Networks	p. 223
Conclusions	p. 228
Summary	p. 229
Mico Installation	p. 231
Installing Mico on UNIX	p. 231
Installing Mico on Windows	p. 234
Road Map	p. 235
Mico Implementation Overview	p. 237
ORB	p. 237
Interface Repository	p. 243
Portable Object Adapter	p. 244
Mico Daemon	p. 245
Implementation Repository	p. 246
IDL Compiler	p. 249
Compiler and Linker Wrappers	p. 253
Examples	p. 254
Mico Implementation Details	p. 257
Path of an Operation Invocation through an ORB	p. 257
Client Side	p. 259
Server Side	p. 262
Integration of a New Invocation Adapter	p. 266
Integration of a New Object Adapter	p. 269
Integration of a New Transport Mechanism	p. 272
XAddress	p. 273
XAddressParser	p. 274
XProfile	p. 275
XProfileDecoder	p. 277
XTransport	p. 277
XTransportServer	p. 279
Dispatcher	p. 280
Initialization	p. 283
The Structure of Generated Program Code	p. 284
Sample Application	p. 291
Stand-alone Application in C++	p. 291
IDL Specification	p. 293
Implementation of the Server in C++	p. 293
Implementation of the Client in C++	p. 295
Implementation of the Server in Java	p. 296
Implementation of the Client in Java	p. 298
List of Figures	p. 301
Acronyms	p. 305
Glossary	p. 309
Bibliography	p. 313
Index	p. 317
Table of Contents provided by Ingram. All Rights Reserved.

Distributed Systems Architecture

A Middleware Approach

At a Glance

Paperback

Industry Reviews

Shipping

How to return your order

Defective items

You Can Find This Book In

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