Enterprise Service Bus. Theory in Practice

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• Enterprise Service Bus
• A Note Regarding Supplemental Files
• Foreword
• Preface
  • About This Book
    • Overview of the Chapters
  • Notational Conventions for ESB Integration Patterns
    • Diagramming Notations
  • Conventions Used in This Book
  • Wed Like to Hear from You
  • Acknowledgments
• 1. Introduction to the Enterprise Service Bus
  • 1.1. SOA in an Event-Driven Enterprise
  • 1.2. A New Approach to Pervasive Integration
  • 1.3. SOA for Web Services, Available Today
  • 1.4. Conventional Integration Approaches
  • 1.5. Requirements Driven by IT Needs
  • 1.6. Industry Traction
    • 1.6.1. Vendors Adopting the ESB
  • 1.7. Characteristics of an ESB
    • 1.7.1. Pervasiveness
    • 1.7.2. Standards-Based Integration
    • 1.7.3. Highly Distributed Integration and Selective Deployment
    • 1.7.4. Distributed Data Transformation
    • 1.7.5. Extensibility Through Layered Services
    • 1.7.6. Event-Driven SOA
    • 1.7.7. Process Flow
    • 1.7.8. Security and Reliability
    • 1.7.9. Autonomous but Federated Environment
    • 1.7.10. Remote Configuration and Management
    • 1.7.11. XML as the Native Datatype of the ESB
    • 1.7.12. Real-Time Throughput of Business Data
    • 1.7.13. Operational Awareness
    • 1.7.14. Incremental Adoption
  • 1.8. Adoption of ESB by Industry
    • 1.8.1. Financial Services
    • 1.8.2. Insurance
    • 1.8.3. Manufacturing
    • 1.8.4. Retail
    • 1.8.5. Telecom
    • 1.8.6. Energy/Utility
    • 1.8.7. Food Distribution Network
    • 1.8.8. Government
  • 1.9. Summary
• 2. The State of Integration
  • 2.1. Business Drivers Motivating Integration
    • 2.1.1. IT Spending Trends
    • 2.1.2. Integration as a High-Ranking Priority
    • 2.1.3. Regulatory Compliance
      • 2.1.3.1. Telecom
      • 2.1.3.2. Sarbanes-Oxley
      • 2.1.3.3. Government
    • 2.1.4. Straight-Through Processing (STP)
    • 2.1.5. Radio Frequency Identification (RFID)
  • 2.2. The Current State of Enterprise Integration
    • 2.2.1. The Enterprise Is Not Well Connected
    • 2.2.2. The Accidental Architecture
      • 2.2.2.1. Departmental and organizational issues
      • 2.2.2.2. Moving forward with an accidental architecture
    • 2.2.3. ETL, Batch Transfers, and FTP
    • 2.2.4. Integration Brokers
  • 2.3. Leveraging Best Practices from EAI and SOA
    • 2.3.1. Adopt XML
    • 2.3.2. Adopt Web Services and Implement SOA
  • 2.4. Refactoring to an ESB
    • 2.4.1. Introduce the ESB at an Individual Project Level
    • 2.4.2. Propagate the ESB Across a Widely Distributed Enterprise
    • 2.4.3. Leave and Layer: Connecting into the Existing EAI Broker
    • 2.4.4. Partner Integration
  • 2.5. Summary
• 3. Necessity Is the Mother of Invention
  • 3.1. The Evolution of the ESB
  • 3.2. The ESB in Global Manufacturing
    • 3.2.1. Putting It to the Test
  • 3.3. Finding the Edge of the Extended Enterprise
    • 3.3.1. e-Commerce Trading Hubs
    • 3.3.2. The Extended Enterprise: The Ever-Changing Edge
    • 3.3.3. Corralling the Ever-Changing Edge of the Network
  • 3.4. Standards-Based Integration
    • 3.4.1. The New Economics of Integration
    • 3.4.2. Driving Down the Cost of Technology
  • 3.5. Case Study: Manufacturing
    • 3.5.1. Building a Real-Time Business
      • 3.5.1.1. Inventory management
      • 3.5.1.2. Technical challenges
      • 3.5.1.3. Availability To Promise (ATP)
    • 3.5.2. Flexible Partner Integration
  • 3.6. Summary
• 4. XML: The Foundation for Business Data Integration
  • 4.1. The Language of Integration
    • 4.1.1. XML Is Human-Readable
  • 4.2. Applications Bend, but Dont Break
  • 4.3. Content-Based Routing and Transformation
  • 4.4. A Generic Data Exchange Architecture
    • 4.4.1. Data Translation to and from a Canonical Format
    • 4.4.2. Adopting a Canonical Data Exchange
    • 4.4.3. Alternate Approaches
  • 4.5. Summary
• 5. Message Oriented Middleware (MOM)
  • 5.1. Tightly Coupled Versus Loosely Coupled Interfaces
    • 5.1.1. Remote Procedure Call (RPC)-Style Programming
    • 5.1.2. Tightly Coupled Interfaces
    • 5.1.3. Loosely Coupled Interactions
    • 5.1.4. Loosely Coupled Interfaces
    • 5.1.5. N-Squared Data Formats: Its Really About the Data Transformations
    • 5.1.6. Get on the Bus
    • 5.1.7. Loosely Coupled Web Services Standards
  • 5.2. MOM Concepts
    • 5.2.1. Abstract Decoupling
    • 5.2.2. Messaging Models: Publish-and-Subscribe and Point-to-Point
    • 5.2.3. Topic Hierarchies
    • 5.2.4. Access Control Lists (ACLs)
    • 5.2.5. Whats in a Message?
  • 5.3. Asynchronous Reliability
    • 5.3.1. Message Autonomy
    • 5.3.2. Store and Forward
    • 5.3.3. Message Persistence
    • 5.3.4. Message Acknowledgments
  • 5.4. Reliable Messaging Models
    • 5.4.1. Reliable Publish-and-Subscribe
    • 5.4.2. Reliable Point-to-Point Queues
    • 5.4.3. Store-and-Forward Across Multiple Message Servers
  • 5.5. Transacted Messages
    • 5.5.1. Local Transactions
    • 5.5.2. Transactions with Multiple Resources
    • 5.5.3. An ESB Removes the Low-Level Complexities
  • 5.6. The Request/Reply Messaging Pattern
    • 5.6.1. The Reply-Forward Pattern
  • 5.7. Messaging Standards
    • 5.7.1. The Java Message Service (JMS)
      • 5.7.1.1. What about the J in JMS?
    • 5.7.2. Reliable Messaging with SOAP
    • 5.7.3. Web Services Events and Notifications
  • 5.8. Summary
• 6. Service Containers and Abstract Endpoints
  • 6.1. SOA Through Abstract Endpoints
  • 6.2. Messaging and Connectivity at the Core
  • 6.3. Diverse Connection Choices
  • 6.4. Diagramming Notations
  • 6.5. Independently Deployable Integration Services
  • 6.6. The ESB Service Container
    • 6.6.1. The Management Interface of the Service Container
    • 6.6.2. The ESB Service Interface
    • 6.6.3. Auditing, Logging, and Error Handling
    • 6.6.4. ESB Service Container Facilities
      • 6.6.4.1. QoP and QoS
      • 6.6.4.2. Administration of ESB facilities
    • 6.6.5. Standardizing ESB Container Connectivity
  • 6.7. Service Containers, Application Servers, and Integration Brokers
    • 6.7.1. Adherence to Standards
    • 6.7.2. Centralized Hub-and-Spoke Processing
    • 6.7.3. Whats Hosted in the Container
    • 6.7.4. Management Substrate
    • 6.7.5. Compiled Class Files Versus Declarative Rules
    • 6.7.6. Abandon Application Servers?
  • 6.8. Summary
• 7. ESB Service Invocations, Routing, and SOA
  • 7.1. Find, Bind, and Invoke
  • 7.2. ESB Service Invocation
  • 7.3. Itinerary-Based Routing: Highly Distributed SOA
  • 7.4. Content-Based Routing (CBR)
    • 7.4.1. Conditional Routing Using BPEL4WS
  • 7.5. Service Reusability
    • 7.5.1. Parameterization and Configuration
    • 7.5.2. Reuse via Composition
  • 7.6. Specialized Services of the ESB
    • 7.6.1. Routing Patterns Using Itineraries and Services
    • 7.6.2. Sophisticated Process Flow Using an Orchestration Service (BPEL4WS)
      • 7.6.2.1. Recovery of process state
      • 7.6.2.2. Correlation of asynchronous conversations
      • 7.6.2.3. BPEL4WS for scripting of orchestration services
    • 7.6.3. XML Storage and Caching Services
      • 7.6.3.1. Data caching
      • 7.6.3.2. Aggregation and reporting
      • 7.6.3.3. Implementation choices
    • 7.6.4. Convergence in Process Modeling
  • 7.7. Summary
• 8. Protocols, Messaging, Custom Adapters, and Services
  • 8.1. The ESB MOM Core
    • 8.1.1. MOM Interoperability
    • 8.1.2. The 80/20 Rule of MOM Backbone Versus External Protocols
  • 8.2. A Generic Message Invocation Framework
    • 8.2.1. Protocol Bridging
    • 8.2.2. MOM Bridging
    • 8.2.3. Direct Protocol Handlers
      • 8.2.3.1. Synchronous request/reply: invoking an ESB service via HTTP
      • 8.2.3.2. Asynchronous request/reply
    • 8.2.4. SOAP Protocol Handler
    • 8.2.5. Where Do Asynchronous Errors Go?
  • 8.3. Case Study: Partner Integration
    • 8.3.1. Secure DMZ Deployment
    • 8.3.2. Availability To Promise (ATP)
    • 8.3.3. The SAP Adapter: A Custom ESB Service
    • 8.3.4. EDI Transportation and Transformation
    • 8.3.5. Removing the Dependency on the EDI VAN
    • 8.3.6. Looking Ahead
  • 8.4. Summary
• 9. Batch Transfer Latency
  • 9.1. Drawbacks of ETL
    • 9.1.1. ETL Reliability and Data Validity
    • 9.1.2. Undesired Downtime and the Logistics of Data Synchronization
    • 9.1.3. Overall Latency of Data Gathering
  • 9.2. The Typical Solution: Overbloat the Inventory
  • 9.3. Case Study: Migrating Toward Real-Time Integration
    • 9.3.1. Inserting the ESB
    • 9.3.2. Transforming and Routing the Data
      • 9.3.2.1. Structured message channels
      • 9.3.2.2. Assigning process definitions
    • 9.3.3. Considerations
      • 9.3.3.1. Streamlined data flow
      • 9.3.3.2. Migrating to XML
      • 9.3.3.3. Message-based atomicity
      • 9.3.3.4. Think asynch
      • 9.3.3.5. Removing the file interface
  • 9.4. Summary
• 10. Java Components in an ESB
  • 10.1. Java Business Integration (JBI)
    • 10.1.1. JBI as an ESB Container
    • 10.1.2. JBI and Other Java Specifications
  • 10.2. The J2EE Connector Architecture (JCA)
    • 10.2.1. Domain Expertise
    • 10.2.2. ESB to Application Server Connectivity
  • 10.3. Java Management eXtensions (JMX)
    • 10.3.1. A JMX Primer
      • 10.3.1.1. JMX server environment
      • 10.3.1.2. JMX client protocol adapters
      • 10.3.1.3. JMX connector interface
      • 10.3.1.4. JMX MBean interfaces
    • 10.3.2. JMX Management in an ESB Architecture
    • 10.3.3. JMX-Managed Components in an ESB
    • 10.3.4. Directory Cache
    • 10.3.5. Template-Based Remote Configuration Replication
  • 10.4. Summary
• 11. ESB Integration Patterns and Recurring Design Solutions
  • 11.1. The VETO Pattern
    • 11.1.1. Variations: The VETRO Pattern
  • 11.2. The Two-Step XRef Pattern
  • 11.3. Portal Server Integration Patterns
    • 11.3.1. The Portal Server Deployment Architecture
    • 11.3.2. Portal Server Challenges
      • 11.3.2.1. Synchronous sequential aggregation
      • 11.3.2.2. Web services
      • 11.3.2.3. Concurrency via multithreaded request
      • 11.3.2.4. Long-duration conversation management
      • 11.3.2.5. Asynchrony and reliability using JMS
      • 11.3.2.6. Connectivity using application adapters
    • 11.3.3. Inserting an ESB as the Integration Backbone
  • 11.4. The Forward Cache Integration Pattern
    • 11.4.1. Data Forwarding Using Publish-and-Subscribe
    • 11.4.2. Data Forwarding Using Itinerary-Based Routing
    • 11.4.3. Other Considerations of the Forward Cache Pattern
      • 11.4.3.1. Integration first, portal second
  • 11.5. Federated Query Patterns
    • 11.5.1. Cache Push Versus Pull Patterns
    • 11.5.2. The Real-Time Request Pattern
    • 11.5.3. The Long-Duration Request Pattern
    • 11.5.4. Federated Query Pattern Variations
      • 11.5.4.1. Federated query using itinerary processes
      • 11.5.4.2. Federated query using BPEL4WS and an orchestration service
  • 11.6. Summary
• 12. ESB and the Evolution of Web Services
  • 12.1. Composability Among Specifications
  • 12.2. Summary of WS-* Specifications
  • 12.3. Adopting the WS-* Specifications in an ESB
    • 12.3.1. WS-* Does Not Imply Enterprise Capabilities
    • 12.3.2. WS-* Does Not Imply ESB
  • 12.4. Conclusion
• A. Appendix: List of ESB Vendors
• 13. Bibliography
  • Analyst Reports
  • Books
  • Miscellaneous
  • Web Services Specifications
  • Java Specifications
• Index
• About the Author
• Colophon
• Copyright

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