Messages come into WSO2 Enterprise Integrator (WSO2 EI) through the following message entry points:
- REST APIs - REST APIs accept REST messages that allow clients to provide additional information on how to manage the message in Enterprise Integrator.
- Proxy Services - A proxy service receives messages that are then sent to a specific endpoint.
- Inbound Endpoints - An inbound endpoint injects a message directly from the transport layer to the mediation layer, without going through the Axis2 engine.
- Tasks - A task injects a message into the Enterprise Integrator at a scheduled interval.
When the Enterprise Integrator receives a message, it sends it either to a proxy service or to the Main sequence for handling. The proxy or sequence is configured with message mediation, which controls how the message will be transformed, filtered, forwarded, etc.
See the following topics for more information on how you can invoke message flows in the Enterprise Integrator: