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TopicSubRequest

Purpose

Subscription request for a pub/sub topic.

Type

Reception:

TopicSubRequestV1

Record with fields:

Pub/sub topic identity

Whether the subscription request is local-only or should be also sent to the network

Triggers:

TopicSubResponseV1

Result

Behaviour

If the topic already exists in the RoutingTable, the EngineIdentity of the requesting engine is added to the RoutingTable, and a TopicSubResponse is returned with a success result.

Otherwise, if the topic does not exist yet:

Message flow

sequenceDiagram

%% --8<-- [start:sequence]
Any Local Engine ->>+ Router: TopicCreateRequest
Router ->>+ PubSub: SubscribeRequest
PubSub -->>- Router: SubscribeResponse
Router -->>- Any Local Engine: TopicCreateResponse
%% --8<-- [end:sequence]
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