Default arguments of CLI

You can use function-related commands in the pulsar-admin CLI to deploy functions. Pulsar provides a variety of commands, such as:

• create command for deploying functions in cluster mode
• trigger command for triggering functions

The following table lists the parameters required in CLI and their default values.

Parameter	Default value
Function name	N/A You can specify any value for the function name (except org, library, or similar class names).
Tenant	N/A The value is derived from the name of the input topics. For example, if the input topic form is persistent://marketing/{namespace}/{topicName}, the tenant name is marketing.
Namespace	N/A The value is derived from the input topic name. If the input topic form is persistent://marketing/asia/{topicName}, the namespace is asia.
Output topic	{input topic}-{function name}-output. For example, if an input topic name of a function is incoming and the function name is exclamation, the output topic name is incoming-exclamation-output.
Processing guarantees	ATLEAST_ONCE
Pulsar service URL	pulsar://localhost:6650

Take the create command for example. The following function has default values for the function name (MyFunction), tenant (public), namespace (default), subscription type (SHARED), processing guarantees (ATLEAST_ONCE), and Pulsar service URL (pulsar://localhost:6650).

bin/pulsar-admin functions create \
  --jar $PWD/my-pulsar-functions.jar \
  --classname org.example.MyFunction \
  --inputs my-function-input-topic1,my-function-input-topic2