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This week, we’ll study a pattern as common as Message pattern in messaging known as Message Endpoint.

When do I use this pattern?

Message Endpoint refers to the code that connects to the messaging server and sends or receives messages. Any system that uses messaging to communicate with other systems must write the code to communicate with messaging server, therefore this pattern is one of the most common patterns.

Message Endpoint in CPI

In CPI, I’ll use the JMS Adapter to demonstrate Message Endpoint.

Message Producer

Message Producer

In this simple integration flow, the input is set using a Content Modifier. JMS Receiver Adapter is used to send the message to the queue. In this example, the combination of Content Modifier and the JMS Receiver Adapter can be called as a Message Endpoint.

Message Consumer

Message Consumer

In this flow, JMS Sender Adapter is used to read the message from the queue. The Log script logs the message. Here, the code/configuration of JMS Sender Adapter is referred to as Message Endpoint, whereas, the logging can be said to be part of application logic.

Conclusion

Message Endpoint refers to the code in the application that connects to the messaging server and sends or receives the messages.

References/Further Readings

• Message Endpoint in Enterprise Integration Patterns
• CPI Components
  • JMS Adapter
    • Sender
    • Receiver
  • Content Modifier

Hope this helps,
Bala

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