Acornfile

name:        "Kafka Acorn"
description: "Acorn providing Kafka"
readme:      "./README.md"
info:        localData.info
icon:        "./icon.png"

args: {
	topic: "my-topic"
}

services: broker: {
	default: true
	generated: job: "setup"
}

containers: kafka: {
	name:        "Kafka"
	description: "Container running a Kafka server"
	image:       "bitnami/kafka:3.4.1"
	ports: publish: "9092/tcp"
	env: {
		KAFKA_CFG_NODE_ID:                        "0"
		KAFKA_CFG_PROCESS_ROLES:                  "controller,broker"
		KAFKA_CFG_LISTENERS:                      "PLAINTEXT://:9092,CONTROLLER://:9093,EXTERNAL://:9094"
		KAFKA_CFG_ADVERTISED_LISTENERS:           "PLAINTEXT://kafka:9092,EXTERNAL://:9094"
		KAFKA_CFG_LISTENER_SECURITY_PROTOCOL_MAP: "CONTROLLER:PLAINTEXT,EXTERNAL:PLAINTEXT,PLAINTEXT:PLAINTEXT"
		KAFKA_CFG_CONTROLLER_QUORUM_VOTERS:       "0@kafka:9093"
		KAFKA_CFG_CONTROLLER_LISTENER_NAMES:      "CONTROLLER"
	}
	probes: [
		{
			type:                "readiness"
			initialDelaySeconds: 5
			timeoutSeconds:      5
			tcp: {
				url: "tcp://localhost:9092"
			}
		},
	]
}

jobs: setup: {
	name:  "configure Kafka server"
	image: "bitnami/kafka:3.4.1"
	dirs: "/acorn/scripts/": "./scripts"
	dependsOn: ["kafka"]
	entrypoint: ["/acorn/scripts/init.sh"]
	env: {
		TOPIC: args.topic
	}
	events: ["create", "update"]
}

localData: info: """
	## Usage

	services: db: {
		image: "ghcr.io/acorn-io/kafka:v#.#.#-#"
	}

	containers: app: {
		image: "app-image"
		env: {
		  KAFKA_HOST: "@{@{service.}kafka.address}"
		  KAFKA_PORT: "@{@{service.}kafka.port.9092}"
			KAFKA_TOPIC: "@{@{service.}kafka.data.topicName}"
		}
	}
	"""