Module client 

Calls from other machines in server mode.

Workflows run in the worker that holds the server’s lease. Any other process (another service, a webhook handler, an operator’s script) connects as a Client; the server relays its calls to the worker, which runs them against its engine and answers through the server. So a completion token can be finished from anywhere, and updates, queries and signals reach the shard that owns the workflow.

The worker opts in with serve_calls. Arguments and results are JSON.

Structs

Client

A connection that sends calls to whichever worker holds the shards.

ClientStream

A stream read through a server (Client::stream).

LocalCalls

The protocol calls of a server, answered in its own process: the HTTP API of fusee server --http. Calls go through an in-process client connection, opened again whenever the server closed it (a replica closes its clients on every view change, and every connection while it is not the ready primary). A call that only reads is sent again once if the connection broke under it; any other fails, since the server may have run it.

Functions

serve_calls

Serves calls other machines send through the server, until the worker’s connection closes. Spawn it next to the engine: