This document summarizes the Enterprise Integration Patterns including definitions of integration styles, messaging channels, endpoints, message routing patterns like content-based router and aggregator, and message transformation patterns like message translator and content enricher. It provides examples of these patterns in an application called Nova.

1. Enterprise [Application] Integration Patterns
Overview
Sergey Podolsky
sergey.podolsky@gmail.com

2. The Bible of Enterprise Integration Patterns
http://www.eaipatterns.com/toc.html

3. Visual Pattern Language

4. Basic Definitions

5. Integration styles

6. In Nova

7. Main building blocks
• Endpoint
• Channel
• Message

8. Messages

9. Message types

10. In Nova

11. Message attributes
Return address: Correlation ID:
Expiration time:

12. Messaging Channels

13. Message exchange styles

14. Invalid Message Channel
Dead Letter Channel

15. Datatype Channel
Channel Adapter

16. Message Endpoints

17. Messaging endpoints

18. Messaging endpoints

19. Messaging endpoints
Service activatorCompeting consumers
Risk Engine Farm
Request Router

20. Pattern categories
• Message routing patterns
• Message transformation patterns
• Message management patterns

21. Message routing patterns

22. Pipes and filters
In Nova
Workunit NOF
TCP
Results
Writer
Post
ProcessorCRF NCRF

23. Content-Based Router
Instrument-Valuation Request
TCP
X2E
Zenith
ZA
MTM
Workunit
Nova Request Router

24. Dynamic Router

25. Sequencer (Splitter)
In Nova
NIF (Nova Request) Request Router Instrument-Valuation Requests

26. Aggregator
Instrument-Valuation Request
(package)
NOF (Nova Result)
Package Aggregator
TCP
X2E
Packager Splitter Router

27. In Nova - Batching
• ILS, Snap Service, Zenith
• Correlation ID = Request ID
• Completion = on time-out || on max count

28. Broadcast with Aggregate Response
Completion criterion:
• Timeout
• Count
• External event

29. Recipient List

30. Resequencer
Example – TCP datagrams

31. Routing Slip
Linear flow

32. Process manager
Complex message flow

33. Message broker
Integration Spaghetti as a Result of Point-to-Point
Connections
A Hierarchy of Message Brokers Provides Decoupling
while Avoiding the "Über-Broker"

34. Message transformation patterns

35. Message Translator
In Nova
Results Processor
CRF NCRF

36. Envelope Wrapper / Unwrapper
Example: TCP/IP

37. Content Enricher
In Nova
ILS Enricher
Instrument Instrument
Risk Engine
ILS

38. Content Filter
In Nova – Message Flattening
Package Hierarchy
Package constituents

39. Message filter
In Nova
NCRF NCRF
(cancelled)
NCRF
Cancelled Requests Filter
NCRF NCRF

40. Claim Check
use the Claim Check to hide the sensitive portions of data

41. Normalizer

42. In Nova
Results Processor
CRF
(X2E)
CRF
(TCP)
NCRF NCRF
Error NOF Package
Hierarchy
RR2PP
NOF NOF
Nova Post Processor

43. Canonical Data Model

44. System Management Patterns

45. Control Bus
• Configuration
• Heartbeat
• Test Messages
• Exceptions
• Statistics
• Live Console
In Nova:
• Request Router – configuration
• Progress Monitor – Statuses

46. Detour
Purposes:
• Debugging
• Validation
• Testing
• Inspection

47. WireTap
In Nova – logging messages to disk

48. Message History
TCP:PID
ResultsWriter:PID
NCRF
CRF
TCP:PID
ResultsWriterTCPWorkunit
Diagnostic Info

49. Message Store
1) Xvis, Instrumentation DB
2) Message logging to disk in Nova

50. Smart Proxy
The Smart Proxy can store this data in two places:
• Inside the Message
• Inside the Smart Proxy

51. Test Message

52. Message Purger

53. Enterprise Message Brokers

54. Frameworks that implement EIP