@adobe/generator-aio-app/generators/add-action/asset-compute/templates/_worker.js

Adobe I/O application yeoman code generator

'use strict';

const { worker, SourceCorruptError } = require('@adobe/asset-compute-sdk');
const fs = require('fs').promises;

exports.main = worker(async (source, rendition) => {
    // Example of how to throw a standard asset compute error
    // if e.g. the file is empty or broken.
    const stats = await fs.stat(source.path);
    if (stats.size === 0) {
        throw new SourceCorruptError('source file is empty');
    }

    // Working with sources and renditions happens through local files,
    // downloading and uploading is handled by the asset-compute-sdk.
    // In this example, simply copy source 1:1 to rendition:
    await fs.copyFile(source.path, rendition.path);

    // Tip: custom worker parameters are available in rendition.instructions
});