REST OpenAPI Sink

Provided by: "Apache Software Foundation"

Support Level for this Kamelet is: "Stable"

Load an OpenAPI specification from a URI and call an operation on a HTTP service. The request that is generated respects the rules given in the OpenAPI specification (for example, path parameters and Content-Type).

Configuration Options

The following table summarizes the configuration options available for the rest-openapi-sink Kamelet:

Property	Name	Description	Type	Default	Example
operation	Operation ID	Required The operation to call.	string
specification	Specification URI	Required The URI to the OpenApi specification file.	string		https://api.example.com/openapi.json

Property

Name

Description

Type

Default

Example

operation

Operation ID

Required The operation to call.

string

specification

Specification URI

Required The URI to the OpenApi specification file.

string

https://api.example.com/openapi.json

Dependencies

At runtime, the rest-openapi-sink Kamelet relies upon the presence of the following dependencies:

camel:rest-openapi
camel:http
camel:kamelet
camel:core

Camel JBang usage

Prerequisites

You’ve installed JBang.
You have executed the following command:

jbang app install camel@apache/camel

Supposing you have a file named route.yaml with this content:

- route:
    from:
      uri: "kamelet:timer-source"
      parameters:
        period: 10000
        message: 'test'
      steps:
        - to:
            uri: "kamelet:log-sink"

You can now run it directly through the following command

camel run route.yaml

Camel K Environment Usage

This section describes how you can use the rest-openapi-sink.

Knative sink

You can use the rest-openapi-sink Kamelet as a Knative sink by binding it to a Knative object.

rest-openapi-sink-binding.yaml

apiVersion: camel.apache.org/v1
kind: KameletBinding
metadata:
  name: rest-openapi-sink-binding
spec:
  source:
    ref:
      kind: Channel
      apiVersion: messaging.knative.dev/v1
      name: mychannel
  sink:
    ref:
      kind: Kamelet
      apiVersion: camel.apache.org/v1
      name: rest-openapi-sink
    properties:
      operation: The Operation ID
      specification: https://api.example.com/openapi.json

Prerequisite

You have Camel K installed on the cluster.

Procedure for using the cluster CLI

Save the rest-openapi-sink-binding.yaml file to your local drive, and then edit it as needed for your configuration.

Run the sink by using the following command:

kubectl apply -f rest-openapi-sink-binding.yaml

Procedure for using the Kamel CLI

Configure and run the sink by using the following command:

kamel bind channel:mychannel -p "sink.operation=The Operation ID" -p "sink.specification=\https://api.example.com/openapi.json" rest-openapi-sink

This command creates the KameletBinding in the current namespace on the cluster.

Kafka sink

You can use the rest-openapi-sink Kamelet as a Kafka sink by binding it to a Kafka topic.