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screwdriver-workflow-parser

v5.0.1

Published

Parses and converts pipeline configuration into a workflow

Downloads

237

Readme

Workflow Parser

Version Downloads Build Status Open Issues License

Parses and converts pipeline configuration into a workflow graph

Usage

npm install screwdriver-workflow-parser
const { getWorkflow, getNextJobs, hasCycle } = require('screwdriver-workflow-parser');

// Calculate the directed graph workflow from a pipeline config (and parse legacy workflows)
const workflowGraph = getWorkflow(pipelineConfig, { useLegacy: true });

/* 
{ 
    nodes: [{ name: '~pr'}, { name: '~commit'}, { name: 'main' }], 
    edges: [{ src: '~pr', dest: 'main'}, { src: '~commit', dest: 'main'}] 
}
*/

// Get a list of job names to start as a result of a commit event, e.g. [ 'a', 'b' ]
const commitJobsToTrigger = getNextJobs(workflowGraph, { trigger: '~commit' });

// Get a list of job names to start as a result of a pull-request event, e.g. [ 'PR-123:a' ]
const prJobsToTrigger = getNextJobs(workflowGraph, { trigger: '~pr', prNum: 123 });

// Check to see if a given workflow graph has a loop in it. A -> B -> A
if (hasCycle(workflowGraph)) {
    console.error('Graph contains a loop.');
}

Testing

npm test

License

Code licensed under the BSD 3-Clause license. See LICENSE file for terms.