screwdriver-workflow-parser
v5.0.1
Published
Parses and converts pipeline configuration into a workflow
Downloads
271
Readme
Workflow Parser
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.