A Connector template for new C8 outbound connector

To use this template update the following resources to match the name of your connector:

• README (title, description)
• Element Template
• POM (artifact name, id, description)
• Connector Function (rename, implement, update OutboundConnector annotation)
• Service Provider Interface (SPI) (rename)

...and delete this hint.

Read more about creating Connectors

Check out the Connectors SDK

Connector Template

Camunda Outbound Connector Template

Emulates a simple outbound connector function that takes a message and echoes it back.

The function will throw an exception if your message starts with fail. This can be used to test error handling.

Build

You can package the Connector by running the following command:

mvn clean package

This will create the following artifacts:

• A thin JAR without dependencies.
• An fat JAR containing all dependencies, potentially shaded to avoid classpath conflicts. This will not include the SDK artifacts since those are in scope provided and will be brought along by the respective Connector Runtime executing the Connector.

Shading dependencies

You can use the maven-shade-plugin defined in the Maven configuration to relocate common dependencies that are used in other Connectors and the Connector Runtime. This helps to avoid classpath conflicts when the Connector is executed.

Use the relocations configuration in the Maven Shade plugin to define the dependencies that should be shaded. The Maven Shade documentation provides more details on relocations.

API

Input

Name	Description	Example	Notes
username	Mock username	alice	Has no effect on the function call outcome.
token	Mock token value	my-secret-token	Has no effect on the function call outcome.
message	Mock message	Hello World	Echoed back in the output. If starts with 'fail', an error will be thrown.

Output

{
  "result": {
    "myProperty": "Message received: ..."
  }
}

Error codes

Code	Description
FAIL	Message starts with 'fail' (ignoring case)

Test locally

Run unit tests

mvn clean verify

Test with local runtime

Use the Camunda Connector Runtime to run your function as a local Java application.

In your IDE you can also simply navigate to the LocalContainerRuntime class in test scope and run it via your IDE. If necessary, you can adjust application.properties in test scope.

Element Template

The element template for this sample connector is generated automatically based on the connector input class using the Element Template Generator. The generation is embedded in the Maven build and can be triggered by running mvn clean package.

It is not mandatory to generate the element template for your connector and you can also create it manually. However, the generator provides a convenient way to create the template and keep it in sync with the connector input class and empowers you to prototype and iterate quickly.

The generated element template can be found in element-templates/template-connector.json.