Eclipse Mosquitto

Lightweight single-process MQTT broker, in-memory unless persistence is turned on.

Provider: default
Kind: Pub/Sub topic
Category: Messaging
Official docs: https://mosquitto.org/man/mosquitto-conf-5.html

Properties · 4 set by this component

property	type	values	required	kind default	this component
allowAnonymous · component property	boolean	—	no	false	inherited
delivery	enum	at-most-once \| at-least-once \| exactly-once	yes	—	▸ at-most-once
managed	boolean	—	no	false	▸ false
maxQueuedMessages · component property	integer	—	no	1000	inherited
mqttVersion · component property	enum	v3-1 \| v3-1-1 \| v5	no	v5	inherited
ordering	enum	none \| per-key	no	none	▸ per-key
persistence · component property	boolean	—	no	false	inherited
replay	boolean	—	no	false	▸ false
topicPerEventType · advanced	boolean	—	no	true	inherited

Rules that apply · 1

Every rule whose selector covers this component's kind or its category. Whether a rule fires depends on the design: its properties, its edges and its groups.

Pub/Sub topic where replay is requirederror

pubsub-replay-required

The design declares that consumers must be able to replay history. A fan-out topic that does not retain messages cannot deliver that.

— all of these hold:
— the design requirement `messaging.replay` is true
— the node's `replay` is false

Use it in a design

nodes:
  - { id: "mosquitto", component: "mosquitto" }

Other Pub/Sub topic products · 12

EventBridgealibaba-eventbridgealibabacloudpubsub-topic Amazon EventBridgeaws-eventbridgeawspubsub-topic Amazon SNSsnsawspubsub-topic Azure Event Gridazure-event-gridazurepubsub-topic Azure Event Grid MQTT Brokerazure-event-grid-mqttazurepubsub-topic MQTT brokermqtt-brokerpubsub-topic NanoMQnanomqpubsub-topic Generic Pub/Sub topicpubsub-topicpubsub-topic Redis Pub/Subredis-pubsubpubsub-topic Eventarcgoogle-eventarcgcppubsub-topic Google Cloud Pub/Subgoogle-pubsubgcppubsub-topic OCI Eventsoci-eventsocipubsub-topic

Source

1# yaml-language-server: $schema=../../schema/component.schema.json
2# Eclipse Mosquitto: single-process MQTT broker. "mosquitto.conf" states persistence defaults to false
3# (memory only), max_queued_messages is 1000 per client, allow_anonymous is false once a listener is
4# defined, retained messages are supported and listeners accept MQTT 3.1, 3.1.1 and 5 by default.
5schemaVersion: "1"
6type: "component"
7id: "mosquitto"
8kind: "pubsub-topic"
9provider: "default"
10docs: "https://mosquitto.org/man/mosquitto-conf-5.html"
11defaults:
12  delivery: "at-most-once"
13  ordering: "per-key"
14  replay: false
15  managed: false
16properties:
17  persistence:
18    type: "boolean"
19    default: false
20  maxQueuedMessages:
21    type: "integer"
22    default: 1000
23  allowAnonymous:
24    type: "boolean"
25    default: false
26  mqttVersion:
27    type: "enum"
28    values: ["v3-1", "v3-1-1", "v5"]
29    default: "v5"

The same page as markdown, for an agent: /catalogue/components/mosquitto.md