kronos-flow

A flow is a bunch of steps and the connection between the steps. So a flow is a directed graph. The edges are the connections between the steps. The vertex is the step. A flow has inbound and outbound steps and processing steps. A flow must fulfill the following requirements:

• It must have a name.
• It must have a description.
• It must have at least one inbound step.
• All the steps must have at least one connection.
• All steps must be reachable from the inbound steps.

A Flow may also have endpoints which could be connected to the steps. So it is possible to bundle steps in a flow. From the outside the flows acts as a single step.

API

Table of Contents

• Flow
  • createEndpoints
  • endpointFor
  • connectEndpoints
  • connectRootEndpoints
  • name
• willBeUnregistered

Flow

Extends Step

This is the flow implementation. It holds all the steps. Declares the following properties: -steps -autostart

Parameters

• config {Object} The definition used to create the flow
• owner {Object} owner of the flow

createEndpoints

The flow has no real endpoints. It only has proxies. So just return the configuration

Parameters

• stepDefinition Object The step configuration

endpointFor

Find endpoint for given expression

Parameters

• expression string
• wait boolean for endpoint to become present (deliver a promise)
• problems string

Returns Endpoint found endpoint

connectEndpoints

set the target endpoints

Parameters

• stepDefinition

connectRootEndpoints

A flow has only endpoint proxies. These will be replaced by the original endpoints of the sub steps get the original endpoints for the Flow.

name

Returns string 'kronos-flow'

willBeUnregistered

Deletes a flow from the stored flow definitions. If the flow is currently running, it will be stopped first. After it is stopped, it will be deleted.

Parameters

• flow

Returns Promise returns a promise that is fullfilled when the flow is removed or one that rejects if there is no flow for the given flowName

install

With npm do:

npm install kronos-flow

license

BSD-2-Clause