Models

When Zilla interacts with the data inside of a message, it only parses the necessary metadata with standard formats. The processing of messages is simple and uses fewer resources to proxy data streams. A model adds the type syntax or structure definitions that Zilla needs to deserialize the remaining message parts.

Primitive Models

Primitive models will have additional properties based on the type used.

model: string
encoding: utf_8

Validating message keys | http.proxy.schema.inline example

Schema Models

Schema-based models will reference a catalog to supply the binding with the configured model definition. Schemas referenced by their subject will fetch the latest version of that schema.

• Fetch the latest schema by subject.

 model: avro
 catalog:
   my_catalog:
    - subject: my_schema_subject

• Fetch the latest schema by the schema definition on a Kafka topic.

 model: avro
 catalog:
   my_catalog:
    - strategy: topic

• Fetch a specific schema by its schema ID.

 model: avro
 catalog:
   my_catalog:
    - id: 42

Validating a new message | Expose a different model format | http.kafka.karapace example