Mule Flow Architecture Part 2

Message Processing Blocks

• Composite source scope allows you to embed into a single message source two or more Anypoint Connectors

• Whenever one of these listeners receives an incoming message, it triggers a flow instance and starts the message through the message processing sequence

Message Processing Blocks

• Building blocks known as scopes provide multiple ways to combine message processors:– Make your XML code much easier to read– Implement parallel processing– Create reusable sequences of building blocks

Exchange Patterns

Processing Strategies

Exception Strategies• Determines how Mule responds if and when an error occurs

during the course of message processing• Configure a custom exception strategy to respond in a variety of ways to a

variety of conditions• Studio provides four pre-packaged error handling strategies to handle

exceptions thrown at various points during the message processing sequence

Flow Architecture

Flow Architecture

• You could embed the filter and the transformers inside the inbound endpoint:

Flow Architecture

• You could embed the filter and the transformers inside the inbound endpoint:

Flow Configuration

• A typical flow might utilize the following sequence:– A message source consisting of one or more inbound

endpoints or other streaming connectors triggers the flow each time it receives a message

– A filter may identify invalid messages and decline to pass them to the rest of the flow for processing

– A transformer can convert the incoming message into a data format consumable by the other message processors in the flow

Flow Configuration

• Throughout the flow, you can do the following:– Send messages to queues– Specify threading models– Call various other flows

Question and answer