REstate

REstate is a library that allows you to define portable state-flows (state-machine based workflows).

A Schematic may be defined on one server or workstation, but then used on others.

REstateMachines can call arbitrary code through the connector system, provided the connector exists on the system where it is running.

Given the following REstate schematic, represented in DOT Graph:

Here is the code to build the schematic:

var schematic = REstateHost.Agent
    .CreateSchematic<string, string>("LoggerMachine")

    .WithState("Created", state => state
        .AsInitialState())

    .WithState("Ready", state => state
        .WithTransitionFrom("Created", "log")
        .WithReentrance("log")
        .WithOnEntry("log info", onEntry => onEntry
            .DescribedAs("Logs the payload as a message.")
            .WithSetting(
                key: "messageFormat", 
                value: "{schematicName}({machineId}) entered {state} on {input}. Message: {payload}")))

    .Build();

Schematics can be serialized into or from YML (YamlDotNet):

SchematicName: LoggerMachine
InitialState: Created
States:
- Value: Created
  Transitions:
  - Input: log
    ResultantState: Ready
- Value: Ready
  Transitions:
  - Input: log
    ResultantState: Ready
  OnEntry:
    ConnectorKey:
      Identifier: log info
    Configuration:
      messageFormat: '{schematicName}({machineId}) entered {state} on {input}. Message: {payload}'
    Description: Logs the payload as a message.

As well as JSON or any other format really.