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Workflow message passing - Ruby SDK

A Workflow can act like a stateful service that receives messages: Queries, Signals, and Updates. These messages interact with the Workflow via handler methods defined in the Workflow code. Clients use messages to read Workflow state or change its behavior.

See Workflow message passing for a general overview.

Write message handlers​

Query handlers​

Signal handlers​

Update handlers and validators​

Send messages​

Send a Query​

Send a Signal​

From a Client​

From a Workflow​

Signal-With-Start​

Send an Update​

Update-With-Start​

Message handler patterns​

Add async handlers​

Use wait conditions​

In handlers​

Before finishing the Workflow​

Use WorkflowInit to access input early​

Use locks to prevent concurrent handler execution​

Troubleshooting​

Signal issues​

Update issues​

Query issues​

Dynamic handlers​

Dynamic Query​

Dynamic Signal​

Dynamic Update​