Create a Custom Adapter

Use the ESP adapter toolkit to create a custom adapter. You can do this by combining transporter and formatter modules that are provided with the adapter toolkit, by writing your own custom transporter and formatter modules, or by combining existing modules with custom ones.

1. Building a Custom Transporter Module
   Use the ESP adapter toolkit to build a custom transporter module to use within the adapter instance of your choice.
2. Building a Custom Formatter Module
   Use the ESP adapter toolkit to build a custom formatter module to use within the adapter instance of your choice.
3. Enabling Guaranteed Delivery for an Input Transporter
   (Optional) Enable guaranteed delivery (GD) in a custom input transporter by implementing the com.sybase.esp.adapter.framework.event.AdapterRowEventListener interface, registering the GdAdapterEventListener class, and adding and setting the <GDMode> parameter to true for the EspPublisher or EspMultistreamPublisher.
4. Implementing Schema Discovery in a Custom Adapter
   (Optional) Use interfaces and functions from the adapter toolkit to implement schema discovery in a transporter and formatter module. There are two types of schema discovery: nonsampling and sampling. Use non-sampling schema discovery when the transporter can fully determine schema on its own. Use sampling schema discovery when the transporter cannot determine the schema and passes this data to the formatter to generate the schema.
5. Configuring a New Adapter
   Configure a new adapter by creating a configuration file for it. The configuration file defines the adapter component chain through which data is processed, and the connection to Event Stream Processor.
6. Creating a Cnxml File for a Custom Adapter
   Create a cnxml configuration file for your custom external adapter so that you can configure the adapter in the ESP Studio, and start and stop it with an ESP project.
7. Starting an Adapter
   You can start an adapter either in unmanaged or managed mode. In unmanaged mode, the adapter is started separately from the ESP project, and in managed mode, the adapter is started with the ESP project.
8. Stopping an Adapter
   You can stop an adapter either in unmanaged or managed mode. In unmanaged mode, the adapter is stopped separately from the ESP project, and in managed mode, the adapter is stopped with the ESP project.