57 lines
1.5 KiB
TypeScript
57 lines
1.5 KiB
TypeScript
import fs from 'fs'
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import type { Predicate } from '@actions/attest'
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export type PredicateInputs = {
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predicateType: string
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predicate: string
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predicatePath: string
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}
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const MAX_PREDICATE_SIZE_BYTES = 16 * 1024 * 1024
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// Returns the predicate specified by the action's inputs. The predicate value
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// may be specified as a path to a file or as a string.
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export const predicateFromInputs = (inputs: PredicateInputs): Predicate => {
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const { predicateType, predicate, predicatePath } = inputs
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if (!predicateType) {
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throw new Error('predicate-type must be provided')
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}
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if (!predicatePath && !predicate) {
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throw new Error('One of predicate-path or predicate must be provided')
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}
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if (predicatePath && predicate) {
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throw new Error('Only one of predicate-path or predicate may be provided')
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}
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let params: string = predicate
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if (predicatePath) {
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if (!fs.existsSync(predicatePath)) {
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throw new Error(`predicate file not found: ${predicatePath}`)
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}
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/* istanbul ignore next */
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if (fs.statSync(predicatePath).size > MAX_PREDICATE_SIZE_BYTES) {
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throw new Error(
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`predicate file exceeds maximum allowed size: ${MAX_PREDICATE_SIZE_BYTES} bytes`
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)
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}
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params = fs.readFileSync(predicatePath, 'utf-8')
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} else {
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if (predicate.length > MAX_PREDICATE_SIZE_BYTES) {
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throw new Error(
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`predicate string exceeds maximum allowed size: ${MAX_PREDICATE_SIZE_BYTES} bytes`
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)
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}
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params = predicate
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}
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return { type: predicateType, params: JSON.parse(params) }
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}
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