Created
October 28, 2022 14:26
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| import { | |
| DefaultStackSynthesizer, | |
| FileAssetLocation, | |
| FileAssetSource, | |
| } from 'aws-cdk-lib'; | |
| import { DefaultStackSynthesizerProps } from 'aws-cdk-lib/core/lib/stack-synthesizers/default-synthesizer'; | |
| import * as path from 'path'; | |
| export interface FileAssetSynthesizerProps | |
| extends DefaultStackSynthesizerProps {} | |
| const cdkLibRoot = path.dirname(require.resolve('aws-cdk-lib')); | |
| export class FileAssetSynthesizer extends DefaultStackSynthesizer { | |
| constructor(props: FileAssetSynthesizerProps = {}) { | |
| super(props); | |
| } | |
| addFileAsset(asset: FileAssetSource): FileAssetLocation { | |
| const assetDirName = asset.fileName && path.dirname(asset.fileName); | |
| if (!isSubDir(assetDirName, cdkLibRoot) && assetDirName !== '.') { | |
| throw new Error( | |
| `Asset ${asset.fileName} cannot be used. Only assets from the CDK construct library are supported.` | |
| ); | |
| } | |
| return super.addFileAsset(asset); | |
| } | |
| } | |
| function isSubDir(dir: string | undefined, parent: string): boolean { | |
| if (!dir) return false; | |
| const path = require('path'); | |
| const relative = path.relative(parent, dir); | |
| return relative && !relative.startsWith('..') && !path.isAbsolute(relative); | |
| } |
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