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Enterprise Integration Patterns in Cloud Platform Integration (EIPinCPI)

Hi SAP Community,

I want to contribute more to the SAP Community. Here’s an idea: why not blog about 65 integration patterns explained in Enterprise Integration Patterns book by Gregor Hohpe and Bobby Woolf and their implementation in SAP Cloud Platform Integration.

So, my resolution for 2020 is to blog about Enterprise Integration Patterns in Cloud Platform Integration. I aim to post a blog about an integration pattern every Sunday. I will call this project EIPinCPI. You can easily follow blogs in this series by following the tag EIPinCPI. Maybe, not all of the patterns can be implemented in CPI, maybe some of them can only be implemented partially, I’ll try my best to inform the same in my blogs.

Here’s the table of integration patterns [1]. I’ll link to individual blogs as I write them:

Message Construction Message Routing Message Transformation Messaging Endpoints Messaging Channels System Management
Message Pipes-and-Filters Message Translator Message Endpoint Message Channel Control Bus
Command Message Message Router Envelope Wrapper Messaging Gateway Point-to-Point Channel Detour
Document Message Content-based Router Content Enricher Messaging Mapper Publish-Subscribe Channel Wire Tap
Event Message Message Filter Content Filter Transactional Client Datatype Channel Message History
Request-Reply Dynamic Router Claim Check Polling Consumer Invalid Message Channel Message Store
Return Address Recipient List Normalizer Event-driven Consumer Dead Letter Channel Smart Proxy
Correlation Identifier Splitter Canonical Data Model Competing Consumers Guaranteed Delivery Test Message
Message Sequence Aggregator Message Dispatcher Channel Adapter Channel Purger
Message Expiration Resequencer Selective Consumer Messaging Bridge
Format Indicator Composed Message Processor Durable Subscriber Message Bus
Scatter-Gather Idempotent Receiver
Routing Slip Service Activator
Process Manager
Message Broker

Why Patterns?

Now that we have index out of the way, let us explore a little bit about reasons to use Enterprise Integration Patterns (This paragraph is based on “Why Enterprise Integration Patterns?” paragraph in the book Enterprise Integration Patterns by Gregor Hohpe and Bobby Woolf) [1]:

  1. Patterns are accepted solutions to recurring problems, for example,
    • How can I add information from the third party before sending the message to a receiver system? The answer is simple – use the ‘Content Enricher’ pattern.
    • I need to send orders to two systems – A and B. However, system A only requires the order if the order costs over £500. How can I achieve this? The answer is simple – use the ‘Message Router’ pattern.
  2. Patterns are abstract, i.e., you can apply patterns in SAP Cloud Platform Integration as well as SAP Process Integration and many other integration tools available in the market
  3. Patterns provide a vocabulary to efficiently describe the solution like used above in point number 1.

I hope you are excited to know more about individual patterns and see how to implement them in CPI.

Hope this helps,
Bala

References/Further Readings

  1. Messaging Patterns Overview: https://www.enterpriseintegrationpatterns.com/patterns/messaging/
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