Graphs instantiating twice

[sfescape]

When using asCallback I noticed that two graph instances are being instantiated for each graph component.

[bergie]

@sfescape can you provide an example to verify this?

[sfescape]

I took the example from the documentation for embedding (simple graph that just repeats in to core/Display).

`"use strict";

// Load the NoFlo module
const noflo = require('noflo')

// Use NoFlo's asCallback helper to prepare a JS function that wraps the graph
const wrappedGraph = noflo.asCallback('show_flow', {
// Provide the project base directory where NoFlo seeks graphs and components
baseDir: process.cwd()
})

// Call the wrapped graph. Can be done multiple times
wrappedGraph({
// Provide data to be sent to inports
in: 'foo',
}, (err, result) => {
// If component sent to its error port, then we'll have err
if (err) { throw err }
// Do something with the results
//console.log(result.out)
})`

I added a console.log to component/Graph.js just before the graph loadFile call.

if (graph.substr(0, 1) !== "/" && graph.substr(1, 1) !== ":" && process && process.cwd) { graph =${process.cwd()}/${graph}; } console.log('load graph file', graph) return noflo.graph.loadFile(graph, (err, instance) => {

Execute the graph and observe that the show_flow graph is loaded twice.

load graph file .../graphs/show_flow.fbp load graph file .../graphs/show_flow.fbp

Note: the graph itself only executes once.