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cdk-nextjs-standalone

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Deploy a NextJS app to AWS using CDK and OpenNext.

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"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); exports.handler = void 0; /* eslint-disable import/no-extraneous-dependencies */ const node_fs_1 = require("node:fs"); const node_os_1 = require("node:os"); const node_path_1 = require("node:path"); const node_stream_1 = require("node:stream"); const client_s3_1 = require("@aws-sdk/client-s3"); const lib_storage_1 = require("@aws-sdk/lib-storage"); // @ts-ignore jsii doesn't support esModuleInterop // eslint-disable-next-line no-duplicate-imports const jszip_1 = require("jszip"); const micromatch = require("micromatch"); const mime = require("mime-types"); const JSZip = jszip_1.default; const s3 = new client_s3_1.S3Client({}); const handler = async (event, context) => { debug({ event }); let responseStatus = 'SUCCESS'; try { if (event.RequestType === 'Create' || event.RequestType === 'Update') { const props = getProperties(event); let tmpDir = ''; const { assetsTmpDir, sourceDirPath, sourceZipFilePath } = initDirectories(); tmpDir = assetsTmpDir; debug('Downloading zip'); await downloadFile({ bucket: props.sourceBucketName, key: props.sourceKeyPrefix, localDestinationPath: sourceZipFilePath, }); debug('Extracting zip'); await extractZip({ sourceZipFilePath, destinationDirPath: sourceDirPath }); const filePaths = listFilePaths(sourceDirPath); if (props.substitutionConfig && Object.keys(props.substitutionConfig).length) { debug('Replacing environment variables: ' + JSON.stringify(props.substitutionConfig)); substitute({ config: props.substitutionConfig, filePaths }); } // must find old object keys before uploading new objects so we know which objects to prune const oldObjectKeys = await listOldObjectKeys({ bucketName: props.destinationBucketName, keyPrefix: props.destinationKeyPrefix, }); if (!props.zip) { debug('Uploading objects to: ' + props.destinationBucketName); await uploadObjects({ bucket: props.destinationBucketName, keyPrefix: props.destinationKeyPrefix, filePaths, baseLocalDir: sourceDirPath, putConfig: props.putConfig, queueSize: props.queueSize, }); if (props.prune) { debug('Emptying/pruning bucket: ' + props.destinationBucketName); await pruneBucket({ bucketName: props.destinationBucketName, filePaths, baseLocalDir: sourceDirPath, keyPrefix: props.destinationKeyPrefix, oldObjectKeys, }); } } else { debug('Uploading zip to: ' + props.destinationBucketName); const zipBuffer = await zipObjects({ tmpDir: sourceDirPath }); await uploadZip({ zipBuffer, bucket: props.destinationBucketName, keyPrefix: props.destinationKeyPrefix, }); } if (tmpDir.length) { debug('Removing temp directory'); (0, node_fs_1.rmSync)(tmpDir, { force: true, recursive: true }); } responseStatus = 'SUCCESS'; } } catch (err) { console.error(err); responseStatus = 'FAILED'; } await cfnResponse({ event, context, responseStatus }); }; exports.handler = handler; function debug(value) { if (process.env.DEBUG) console.log(JSON.stringify(value, null, 2)); } function getProperties(event) { const props = event.ResourceProperties; return { ...props, prune: props.prune === 'true', zip: props.zip === 'true', }; } function initDirectories() { const assetsTmpDir = (0, node_fs_1.mkdtempSync)((0, node_path_1.resolve)((0, node_os_1.tmpdir)(), 'assets-')); const sourceZipDirPath = (0, node_path_1.resolve)(assetsTmpDir, 'source-zip'); (0, node_fs_1.mkdirSync)(sourceZipDirPath); const sourceZipFilePath = (0, node_path_1.resolve)(sourceZipDirPath, 'temp.zip'); // trailing slash expected by adm-zip's `extractAllTo` method const sourceDirPath = (0, node_path_1.resolve)(assetsTmpDir, 'source') + '/'; (0, node_fs_1.mkdirSync)(sourceDirPath); return { assetsTmpDir, sourceZipFilePath, sourceDirPath }; } async function downloadFile({ bucket, key, localDestinationPath, }) { const data = await s3.send(new client_s3_1.GetObjectCommand({ Bucket: bucket, Key: key })); return new Promise(async (resolve, reject) => { const body = data.Body; if (body instanceof node_stream_1.Readable) { const writeStream = (0, node_fs_1.createWriteStream)(localDestinationPath); body .pipe(writeStream) .on('error', (err) => reject(err)) .on('close', () => resolve(null)); } }); } async function extractZip({ sourceZipFilePath, destinationDirPath, }) { const zipBuffer = (0, node_fs_1.readFileSync)(sourceZipFilePath); const archive = await JSZip.loadAsync(zipBuffer); for (const [zipRelativePath, zipObject] of Object.entries(archive.files)) { if (!zipObject.dir) { const absPath = (0, node_path_1.resolve)(destinationDirPath, zipRelativePath); const pathDirname = (0, node_path_1.dirname)(absPath); if (!(0, node_fs_1.existsSync)(pathDirname)) { (0, node_fs_1.mkdirSync)(pathDirname, { recursive: true }); } const fileContents = await zipObject.async('nodebuffer'); let isSymLink = false; const unixPermissions = zipObject?.unixPermissions; if (typeof unixPermissions === 'number') { // https://github.com/twolfson/grunt-zip/pull/52/files // eslint-disable-next-line no-bitwise isSymLink = (unixPermissions & 0xf000) === 0xa000; } if (isSymLink) { (0, node_fs_1.symlinkSync)(fileContents, absPath); } else { (0, node_fs_1.writeFileSync)(absPath, fileContents); } } } } /** * Given path of directory, returns array of all file paths within directory */ function listFilePaths(dirPath) { const filePaths = []; const directory = (0, node_fs_1.readdirSync)(dirPath, { withFileTypes: true }); for (const d of directory) { const filePath = (0, node_path_1.resolve)(dirPath, d.name); if (d.isDirectory()) { filePaths.push(...listFilePaths(filePath)); } else { filePaths.push(filePath); } } return filePaths; } function substitute({ filePaths, config }) { const findRegExp = new RegExp(Object.keys(config).join('|'), 'g'); for (const filePath of filePaths) { if (filePath.includes('node_modules')) continue; const fileContents = (0, node_fs_1.readFileSync)(filePath, { encoding: 'utf8' }); const newFileContents = fileContents.replace(findRegExp, (matched) => { const matchedEnvVar = config[matched]; if (matchedEnvVar) { return matchedEnvVar; } else { console.warn(`Could not find matched value: ${matched} in environment object. Substituting ''`); return ''; } }); if (fileContents !== newFileContents) { (0, node_fs_1.writeFileSync)(filePath, newFileContents); } } } async function listOldObjectKeys({ bucketName, keyPrefix, }) { const oldObjectKeys = []; let nextToken = undefined; do { const cmd = { Bucket: bucketName, Prefix: keyPrefix }; if (nextToken) { cmd.ContinuationToken = nextToken; } const res = await s3.send(new client_s3_1.ListObjectsV2Command(cmd)); const contents = res.Contents; nextToken = res.NextContinuationToken; if (contents?.length) { for (const { Key: key } of contents) { if (key) { oldObjectKeys.push(key); } } } } while (nextToken); return oldObjectKeys; } /** * Create S3 Key given local path */ function createS3Key({ keyPrefix, path, baseLocalDir }) { const objectKeyParts = []; if (keyPrefix) objectKeyParts.push(keyPrefix); objectKeyParts.push((0, node_path_1.relative)(baseLocalDir, path)); return (0, node_path_1.join)(...objectKeyParts); } async function* chunkArray(array, chunkSize) { for (let i = 0; i < array.length; i += chunkSize) { yield array.slice(i, i + chunkSize); } } async function uploadObjects({ bucket, keyPrefix, filePaths, baseLocalDir, putConfig = {}, queueSize, }) { for await (const filePathChunk of chunkArray(filePaths, 100)) { const putObjectInputs = filePathChunk.map((path) => { const contentType = mime.lookup(path) || undefined; const putObjectOptions = getPutObjectOptions({ path, putConfig }); const key = createS3Key({ keyPrefix, path, baseLocalDir }); return { ContentType: contentType, ...putObjectOptions, Bucket: bucket, Key: key, Body: (0, node_fs_1.createReadStream)(path), }; }); // Call put objects serially, prevents XAmzContentSHA256Mismatch errors // This seems to be a bug within the lib storage package, I have opened an issue here: https://github.com/aws/aws-sdk-js-v3/issues/6940 await putObjectInputs.reduce(async (acc, params) => { await acc; const opts = { client: s3, params, }; if (queueSize) { opts.queueSize = queueSize; } const upload = new lib_storage_1.Upload(opts); console.log('uploading', params); return upload.done(); }, Promise.resolve(null)); } } /** * Zips objects taking into account symlinks * @see https://github.com/Stuk/jszip/issues/386#issuecomment-634773343 */ function zipObjects({ tmpDir }) { const zip = new JSZip(); const filePaths = listFilePaths(tmpDir); for (const filePath of filePaths) { const relativePath = (0, node_path_1.relative)(tmpDir, filePath); const stat = (0, node_fs_1.lstatSync)(filePath); if (stat.isSymbolicLink()) { zip.file(relativePath, (0, node_fs_1.readlinkSync)(filePath), { dir: stat.isDirectory(), unixPermissions: parseInt('120755', 8), }); } else { zip.file(relativePath, (0, node_fs_1.readFileSync)(filePath), { dir: stat.isDirectory(), unixPermissions: stat.mode }); } } return zip.generateAsync({ type: 'nodebuffer', platform: 'UNIX', compression: 'STORE', }); } async function uploadZip({ bucket, keyPrefix, zipBuffer, }) { return s3.send(new client_s3_1.PutObjectCommand({ Bucket: bucket, Key: keyPrefix, Body: zipBuffer, ContentType: 'application/zip', })); } function getPutObjectOptions({ path, putConfig = {}, }) { let putObjectOptions = {}; for (const [key, value] of Object.entries(putConfig)) { if (micromatch.isMatch(path, key)) { putObjectOptions = { ...putObjectOptions, ...value }; } } return putObjectOptions; } async function pruneBucket({ bucketName, filePaths, baseLocalDir, keyPrefix, oldObjectKeys, }) { const newObjectKeys = filePaths.map((path) => createS3Key({ keyPrefix, path, baseLocalDir })); // find old objects that are not currently in new objects to prune. const oldObjectKeysToBeDeleted = []; for (const key of oldObjectKeys) { if (!newObjectKeys.includes(key)) { oldObjectKeysToBeDeleted.push(key); } } if (oldObjectKeysToBeDeleted.length) { const deletePromises = []; // AWS limits S3 delete commands to 1000 keys per call const deleteCommandLimit = 1000; for (let i = 0; i < oldObjectKeysToBeDeleted.length; i += deleteCommandLimit) { const objectChunk = oldObjectKeysToBeDeleted.slice(i, i + deleteCommandLimit); deletePromises.push(s3.send(new client_s3_1.DeleteObjectsCommand({ Bucket: bucketName, Delete: { Objects: objectChunk.map((k) => ({ Key: k })) }, }))); } await Promise.all(deletePromises); debug(`Objects pruned in ${bucketName}: ${oldObjectKeysToBeDeleted.join(', ')}`); } else { debug(`No objects to prune`); } } /** * Inspired by: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-lambda-function-code-cfnresponsemodule.html */ function cfnResponse(props) { const body = JSON.stringify({ Status: props.responseStatus, Reason: 'See the details in CloudWatch Log Stream: ' + props.context.logStreamName, PhysicalResourceId: props.physicalResourceId || props.context.logStreamName, StackId: props.event.StackId, RequestId: props.event.RequestId, LogicalResourceId: props.event.LogicalResourceId, Data: props.responseData, }); return fetch(props.event.ResponseURL, { method: 'PUT', body, headers: { 'content-type': '', 'content-length': body.length.toString() }, }); } //# 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localDestinationPath: string;\n}) {\n  const data = await s3.send(new GetObjectCommand({ Bucket: bucket, Key: key }));\n  return new Promise(async (resolve, reject) => {\n    const body = data.Body;\n    if (body instanceof Readable) {\n      const writeStream = createWriteStream(localDestinationPath);\n      body\n        .pipe(writeStream)\n        .on('error', (err) => reject(err))\n        .on('close', () => resolve(null));\n    }\n  });\n}\n\nasync function extractZip({\n  sourceZipFilePath,\n  destinationDirPath,\n}: {\n  sourceZipFilePath: string;\n  destinationDirPath: string;\n}) {\n  const zipBuffer = readFileSync(sourceZipFilePath);\n  const archive = await JSZip.loadAsync(zipBuffer);\n  for (const [zipRelativePath, zipObject] of Object.entries(archive.files)) {\n    if (!zipObject.dir) {\n      const absPath = resolvePath(destinationDirPath, zipRelativePath);\n      const pathDirname = dirname(absPath);\n      if (!existsSync(pathDirname)) {\n        mkdirSync(pathDirname, 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 filePaths.push(filePath);\n    }\n  }\n  return filePaths;\n}\n\nfunction substitute({ filePaths, config }: { filePaths: string[]; config: Record<string, string> }) {\n  const findRegExp = new RegExp(Object.keys(config).join('|'), 'g');\n  for (const filePath of filePaths) {\n    if (filePath.includes('node_modules')) continue;\n    const fileContents = readFileSync(filePath, { encoding: 'utf8' });\n    const newFileContents = fileContents.replace(findRegExp, (matched) => {\n      const matchedEnvVar = config[matched];\n      if (matchedEnvVar) {\n        return matchedEnvVar;\n      } else {\n        console.warn(`Could not find matched value: ${matched} in environment object. Substituting ''`);\n        return '';\n      }\n    });\n    if (fileContents !== newFileContents) {\n      writeFileSync(filePath, newFileContents);\n    }\n  }\n}\n\nasync function listOldObjectKeys({\n  bucketName,\n  keyPrefix,\n}: {\n  bucketName: string;\n  keyPrefix?: string;\n}): Promise<string[]> {\n  const oldObjectKeys: string[] = [];\n  let nextToken: string | undefined = undefined;\n  do {\n    const cmd: ListObjectsV2CommandInput = { Bucket: bucketName, Prefix: keyPrefix };\n    if (nextToken) {\n      cmd.ContinuationToken = nextToken;\n    }\n    const res = await s3.send(new ListObjectsV2Command(cmd));\n    const contents = res.Contents;\n    nextToken = res.NextContinuationToken;\n    if (contents?.length) {\n      for (const { Key: key } of contents) {\n        if (key) {\n          oldObjectKeys.push(key);\n        }\n      }\n    }\n  } while (nextToken);\n  return oldObjectKeys;\n}\n\n/**\n * Create S3 Key given local path\n */\nfunction createS3Key({ keyPrefix, path, baseLocalDir }: { keyPrefix?: string; path: string; baseLocalDir: string }) {\n  const objectKeyParts: string[] = [];\n  if (keyPrefix) objectKeyParts.push(keyPrefix);\n  objectKeyParts.push(relative(baseLocalDir, path));\n  return join(...objectKeyParts);\n}\n\nasync function* chunkArray(array: string[], chunkSize: number) {\n  for (let i = 0; i < array.length; i += chunkSize) {\n    yield array.slice(i, i + chunkSize);\n  }\n}\n\nasync function uploadObjects({\n  bucket,\n  keyPrefix,\n  filePaths,\n  baseLocalDir,\n  putConfig = {},\n  queueSize,\n}: {\n  bucket: CustomResourceProperties['destinationBucketName'];\n  keyPrefix?: CustomResourceProperties['destinationKeyPrefix'];\n  filePaths: string[];\n  baseLocalDir: string;\n  putConfig: CustomResourceProperties['putConfig'];\n  queueSize: CustomResourceProperties['queueSize'];\n}) {\n  for await (const filePathChunk of chunkArray(filePaths, 100)) {\n    const putObjectInputs: PutObjectCommandInput[] = filePathChunk.map((path) => {\n      const contentType = mime.lookup(path) || undefined;\n      const putObjectOptions = getPutObjectOptions({ path, putConfig });\n      const key = createS3Key({ keyPrefix, path, baseLocalDir });\n      return {\n        ContentType: contentType,\n        ...putObjectOptions,\n        Bucket: bucket,\n        Key: key,\n        Body: createReadStream(path),\n      };\n    });\n\n    // Call put objects serially, prevents XAmzContentSHA256Mismatch errors\n    // This seems to be a bug within the lib storage package, I have opened an issue here: https://github.com/aws/aws-sdk-js-v3/issues/6940\n    await putObjectInputs.reduce(async (acc, params) => {\n      await acc;\n      const opts: Options = {\n        client: s3,\n        params,\n      };\n      if (queueSize) {\n        opts.queueSize = queueSize;\n      }\n      const upload = new Upload(opts);\n      console.log('uploading', params);\n      return upload.done();\n    }, Promise.resolve<any>(null));\n  }\n}\n\n/**\n * Zips objects taking into account symlinks\n * @see https://github.com/Stuk/jszip/issues/386#issuecomment-634773343\n */\nfunction zipObjects({ tmpDir }: { tmpDir: string }): Promise<Buffer> {\n  const zip = new JSZip();\n  const filePaths = listFilePaths(tmpDir);\n  for (const filePath of filePaths) {\n    const relativePath = relative(tmpDir, filePath);\n    const stat = lstatSync(filePath);\n    if (stat.isSymbolicLink()) {\n      zip.file(relativePath, readlinkSync(filePath), {\n        dir: stat.isDirectory(),\n        unixPermissions: parseInt('120755', 8),\n      });\n    } else {\n      zip.file(relativePath, readFileSync(filePath), { dir: stat.isDirectory(), unixPermissions: stat.mode });\n    }\n  }\n  return zip.generateAsync({\n    type: 'nodebuffer',\n    platform: 'UNIX',\n    compression: 'STORE',\n  });\n}\n\nasync function uploadZip({\n  bucket,\n  keyPrefix,\n  zipBuffer,\n}: {\n  bucket: CustomResourceProperties['destinationBucketName'];\n  keyPrefix?: CustomResourceProperties['destinationKeyPrefix'];\n  zipBuffer: Buffer;\n}) {\n  return s3.send(\n    new PutObjectCommand({\n      Bucket: bucket,\n      Key: keyPrefix,\n      Body: zipBuffer,\n      ContentType: 'application/zip',\n    })\n  );\n}\n\nfunction getPutObjectOptions({\n  path,\n  putConfig = {},\n}: {\n  path: string;\n  putConfig: NextjsBucketDeploymentProps['putConfig'];\n}): Partial<PutObjectCommandInput> {\n  let putObjectOptions: Partial<PutObjectCommandInput> = {};\n  for (const [key, value] of Object.entries(putConfig)) {\n    if (micromatch.isMatch(path, key)) {\n      putObjectOptions = { ...putObjectOptions, ...value };\n    }\n  }\n  return putObjectOptions;\n}\n\nasync function pruneBucket({\n  bucketName,\n  filePaths,\n  baseLocalDir,\n  keyPrefix,\n  oldObjectKeys,\n}: {\n  bucketName: string;\n  filePaths: string[];\n  baseLocalDir: string;\n  keyPrefix?: string;\n  oldObjectKeys: string[];\n}) {\n  const newObjectKeys = filePaths.map((path) => createS3Key({ keyPrefix, path, baseLocalDir }));\n  // find old objects that are not currently in new objects to prune.\n  const oldObjectKeysToBeDeleted: string[] = [];\n  for (const key of oldObjectKeys) {\n    if (!newObjectKeys.includes(key)) {\n      oldObjectKeysToBeDeleted.push(key);\n    }\n  }\n  if (oldObjectKeysToBeDeleted.length) {\n    const deletePromises = [];\n\n    // AWS limits S3 delete commands to 1000 keys per call\n    const deleteCommandLimit = 1000;\n\n    for (let i = 0; i < oldObjectKeysToBeDeleted.length; i += deleteCommandLimit) {\n      const objectChunk = oldObjectKeysToBeDeleted.slice(i, i + deleteCommandLimit);\n\n      deletePromises.push(\n        s3.send(\n          new DeleteObjectsCommand({\n            Bucket: bucketName,\n            Delete: { Objects: objectChunk.map((k) => ({ Key: k })) },\n          })\n        )\n      );\n    }\n\n    await Promise.all(deletePromises);\n\n    debug(`Objects pruned in ${bucketName}: ${oldObjectKeysToBeDeleted.join(', ')}`);\n  } else {\n    debug(`No objects to prune`);\n  }\n}\n\ninterface CfnResponseProps {\n  event: Parameters<CloudFormationCustomResourceHandler>[0];\n  context: Parameters<CloudFormationCustomResourceHandler>[1];\n  responseStatus: 'SUCCESS' | 'FAILED';\n  responseData?: Record<string, string>;\n  physicalResourceId?: string;\n}\n/**\n * Inspired by: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-lambda-function-code-cfnresponsemodule.html\n */\nfunction cfnResponse(props: CfnResponseProps) {\n  const body = JSON.stringify({\n    Status: props.responseStatus,\n    Reason: 'See the details in CloudWatch Log Stream: ' + props.context.logStreamName,\n    PhysicalResourceId: props.physicalResourceId || props.context.logStreamName,\n    StackId: props.event.StackId,\n    RequestId: props.event.RequestId,\n    LogicalResourceId: props.event.LogicalResourceId,\n    Data: props.responseData,\n  });\n  return fetch(props.event.ResponseURL, {\n    method: 'PUT',\n    body,\n    headers: { 'content-type': '', 'content-length': body.length.toString() },\n  });\n}\n"]}