Datatype Channel p. 111 Invalid Message Channel p. 115 Dead Letter Channel p. 119 Guaranteed Delivery p. 122 Channel Adapter p. 127 Messaging Bridge

Transcription

1 Foreword p. xv Foreword p. xvii Preface p. xix Acknowledgments p. xxv Introduction p. xxix Solving Integration Problems Using Patterns p. 1 The Need for Integration p. 1 Integration Challenges p. 2 How Integration Patterns Can Help p. 4 The Wide World of Integration p. 5 Loose Coupling p. 9 One-Minute EAI p. 11 A Loosely Coupled Integration Solution p. 15 Widgets & Gadgets 'R Us: An Example p. 17 Internal Systems p. 18 Taking Orders p. 18 Processing Orders p. 20 Checking Status p. 26 Change Address p. 30 New Catalog p. 32 Announcements p. 33 Testing and Monitoring p. 34 Summary p. 37 Integration Styles p. 39 Introduction p. 39 File Transfer p. 43 Shared Database p. 47 Remote Procedure Invocation p. 50 Messaging p. 53 Messaging Systems p. 57 Introduction p. 57 Message Channel p. 60 Message p. 66 Pipes and Filters p. 70 Message Router p. 78 Message Translator p. 85 Message Endpoint p. 95 Messaging Channels p. 99 Introduction p. 99 Point-to-Point Channel p. 103 Publish-Subscribe Channel p. 106

2 Datatype Channel p. 111 Invalid Message Channel p. 115 Dead Letter Channel p. 119 Guaranteed Delivery p. 122 Channel Adapter p. 127 Messaging Bridge p. 133 Message Bus p. 137 Message Construction p. 143 Introduction p. 143 Command Message p. 145 Document Message p. 147 Event Message p. 151 Request-Reply p. 154 Return Address p. 159 Correlation Identifier p. 163 Message Sequence p. 170 Message Expiration p. 176 Format Indicator p. 180 Interlude: Simple Messaging p. 183 Introduction p. 183 Request-Reply Example p. 183 Publish-Subscribe Example p. 185 JMS Request-Reply Example p. 187 Request-Reply Example p. 187 Request-Reply Code p. 189 Invalid Message Example p. 196 Conclusions p. 197.NET Request-Reply Example p. 198 Request-Reply Example p. 198 Request-Reply Code p. 200 Invalid Message Example p. 205 Conclusions p. 206 JMS Publish-Subscribe Example p. 207 The Observer Pattern p. 207 Distributed Observer p. 208 Publish-Subscribe p. 209 Comparisons p. 212 Push and Pull Models p. 213 Channel Design p. 219 Conclusions p. 222 Message Routing p. 225

3 Introduction p. 225 Content-Based Router p. 230 Message Filter p. 237 Dynamic Router p. 243 Recipient List p. 249 Splitter p. 259 Aggregator p. 268 Resequencer p. 283 Composed Message Processor p. 294 Scatter-Gather p. 297 Routing Slip p. 301 Process Manager p. 312 Message Broker p. 322 Message Transformation p. 327 Introduction p. 327 Envelope Wrapper p. 330 Content Enricher p. 336 Content Filter p. 342 Claim Check p. 346 Normalizer p. 352 Canonical Data Model p. 355 Interlude: Composed Messaging p. 361 Loan Broker Example p. 361 Obtaining a Loan Quote p. 361 Designing the Message Flow p. 362 Sequencing: Synchronous versus Asynchronous p. 364 Addressing: Distribution versus Auction p. 366 Aggregating Strategies: Multiple Channels versus Single Channel p. 368 Managing Concurrency p. 368 Three Implementations p. 369 Synchronous Implementation Using Web Services p. 371 Solution Architecture p. 371 Web Services Design Considerations p. 372 Apache Axis p. 376 Service Discovery p. 379 The Loan Broker Application p. 379 Components of the Loan Broker Application p. 381 Client Application p. 396 Running the Solution p. 397 Performance Limitations p. 399 Limitations of This Example p. 400

4 Summary p. 400 Asynchronous Implementation with MSMQ p. 401 Loan Broker Ecosystem p. 401 Laying the Groundwork: A Messaging Gateway p. 402 Base Classes for Common Functionality p. 405 Designing the Bank p. 410 Designing the Credit Bureau p. 412 Designing the Loan Broker p. 413 Refactoring the Loan Broker p. 431 Putting it All Together p. 435 Improving Performance p. 435 A Few Words on Testing p. 440 Limitations of This Example p. 443 Summary p. 444 Asynchronous Implementation with TIBCO ActiveEnterprise p. 445 Solution Architecture p. 445 The Implementation Toolset p. 448 The Interfaces p. 451 Implementing the Synchronous Services p. 452 The Loan Broker Process p. 455 Managing Concurrent Auctions p. 459 Execution p. 460 Conclusions p. 462 Messaging Endpoints p. 463 Introduction p. 463 Messaging Gateway p. 468 Messaging Mapper p. 477 Transactional Client p. 484 Polling Consumer p. 494 Event-Driven Consumer p. 498 Competing Consumers p. 502 Message Dispatcher p. 508 Selective Consumer p. 515 Durable Subscriber p. 522 Idempotent Receiver p. 528 Service Activator p. 532 System Management p. 537 Introduction p. 537 Control Bus p. 540 Detour p. 545 Wire Tap p. 547

5 Message History p. 551 Message Store p. 555 Smart Proxy p. 558 Test Message p. 569 Channel Purger p. 572 Interlude: System Management Example p. 577 Loan Broker System Management p. 577 Instrumenting the Loan Broker p. 578 Management Console p. 579 Loan Broker Quality of Service p. 579 Verify the Credit Bureau Operation p. 587 Credit Bureau Failover p. 592 Enhancing the Management Console p. 595 Limitations of This Example p. 602 Integration Patterns in Practice p. 603 Case Study: Bond Pricing System p. 603 Building a System p. 603 Architecture with Patterns p. 604 Structuring Channels p. 610 Selecting a Message Channel p. 614 Problem Solving with Patterns p. 618 Flashing Market Data Updates p. 618 Major Production Crash p. 620 Summary p. 623 Concluding Remarks p. 625 Emerging Standards and Futures in Enterprise Integration p. 625 The Relationship between Standards and Design Patterns p. 626 Survey of Standards Processes and Organizations p. 627 Business Process Components and Intra-Web Service Messaging p. 629 ebxml and the Electronic Business Messaging Service (ebms) p. 631 Business Process Execution Language for Web Services (BEPL4WS) p. 634 Web Service Choreography Interface (WSCI) p. 636 Java Business Process Component Standards p. 637 WS-* p. 639 Conclusions p. 647 Bibliography p. 649 Index p. 659 Table of Contents provided by Blackwell's Book Services and R.R. Bowker. Used with permission.