cdk-nextjs-standalone
Version:
Deploy a NextJS app to AWS using CDK and OpenNext.
189 lines • 23.8 kB
JavaScript
"use strict";
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.NextjsBuild = void 0;
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const child_process_1 = require("child_process");
const fs = require("fs");
const path = require("path");
const aws_cdk_lib_1 = require("aws-cdk-lib");
const constructs_1 = require("constructs");
const constants_1 = require("./constants");
const NextjsBucketDeployment_1 = require("./NextjsBucketDeployment");
const list_directories_1 = require("./utils/list-directories");
/**
* Build Next.js app.
*/
class NextjsBuild extends constructs_1.Construct {
/**
* Contains server code and dependencies.
*/
get nextServerFnDir() {
const dir = path.join(this.getNextBuildDir(), constants_1.NEXTJS_BUILD_SERVER_FN_DIR);
this.warnIfMissing(dir);
return dir;
}
/**
* Contains function for processessing image requests.
* Should be arm64.
*/
get nextImageFnDir() {
const fnPath = path.join(this.getNextBuildDir(), constants_1.NEXTJS_BUILD_IMAGE_FN_DIR);
this.warnIfMissing(fnPath);
return fnPath;
}
/**
* Contains function for processing items from revalidation queue.
*/
get nextRevalidateFnDir() {
const fnPath = path.join(this.getNextBuildDir(), constants_1.NEXTJS_BUILD_REVALIDATE_FN_DIR);
this.warnIfMissing(fnPath);
return fnPath;
}
/**
* Contains function for inserting revalidation items into the table.
*/
get nextRevalidateDynamoDBProviderFnDir() {
const fnPath = path.join(this.getNextBuildDir(), constants_1.NEXTJS_BUILD_DYNAMODB_PROVIDER_FN_DIR);
this.warnIfMissing(fnPath);
return fnPath;
}
/**
* Static files containing client-side code.
*/
get nextStaticDir() {
const dir = path.join(this.getNextBuildDir(), constants_1.NEXTJS_STATIC_DIR);
this.warnIfMissing(dir);
return dir;
}
/**
* Cache directory for generated data.
*/
get nextCacheDir() {
const dir = path.join(this.getNextBuildDir(), constants_1.NEXTJS_CACHE_DIR);
this.warnIfMissing(dir);
return dir;
}
constructor(scope, id, props) {
super(scope, id);
this.props = props;
this.validatePaths();
const bundlingRequired = aws_cdk_lib_1.Stack.of(this).bundlingRequired;
const skipBuild = this.props.skipBuild;
// for more info see docs/code-deployment-flow.md Conditional Build Logic section
if (bundlingRequired) {
// deploy/synth
if (skipBuild) {
this.assertBuildDirExists(true);
}
else {
this.build();
}
}
else {
// destroy
this.mockNextBuildDir();
}
}
/**
* Validate required paths/files for NextjsBuild
*/
validatePaths() {
const nextjsPath = this.props.nextjsPath;
// validate site path exists
if (!fs.existsSync(nextjsPath)) {
throw new Error(`Invalid nextjsPath ${nextjsPath} - directory does not exist at "${path.resolve(nextjsPath)}"`);
}
// Ensure that the site has a build script defined
if (!fs.existsSync(path.join(nextjsPath, 'package.json'))) {
throw new Error(`No package.json found at "${nextjsPath}".`);
}
const packageJson = JSON.parse(fs.readFileSync(path.join(nextjsPath, 'package.json'), 'utf8'));
if (!packageJson.scripts || !packageJson.scripts.build) {
throw new Error(`No "build" script found within package.json in "${nextjsPath}".`);
}
}
build() {
const buildPath = this.props.buildPath ?? this.props.nextjsPath;
const buildCommand = this.props.buildCommand ?? `npx /aws@^3 build`;
// run build
if (!this.props.quiet) {
console.debug(`Running "${buildCommand}" in`, buildPath);
}
// will throw if build fails - which is desired
(0, child_process_1.execSync)(buildCommand, {
cwd: buildPath,
stdio: this.props.quiet ? 'ignore' : 'inherit',
env: this.getBuildEnvVars(),
});
}
/**
* Gets environment variables for build time (when `open-next build` is called).
* Unresolved tokens are replace with placeholders like {{ TOKEN_NAME }} and
* will be resolved later in `NextjsBucketDeployment` custom resource.
*/
getBuildEnvVars() {
const env = {};
for (const [k, v] of Object.entries(process.env)) {
if (v) {
env[k] = v;
}
}
for (const [k, v] of Object.entries(this.props.environment || {})) {
// don't replace server only env vars for static assets
if (aws_cdk_lib_1.Token.isUnresolved(v) && k.startsWith('NEXT_PUBLIC_')) {
env[k] = NextjsBucketDeployment_1.NextjsBucketDeployment.getSubstitutionValue(k);
}
else {
env[k] = v;
}
}
return env;
}
readPublicFileList() {
if (!fs.existsSync(this.nextStaticDir))
return [];
return (0, list_directories_1.listDirectory)(this.nextStaticDir).map((file) => path.join('/', path.relative(this.nextStaticDir, file)));
}
assertBuildDirExists(throwIfMissing = true) {
const dir = this.getNextBuildDir();
if (!fs.existsSync(dir)) {
if (throwIfMissing) {
throw new Error(`Build directory "${dir}" does not exist. Try removing skipBuild: true option.`);
}
return false;
}
return true;
}
getNextBuildDir() {
const dir = path.resolve(this.props.nextjsPath, constants_1.NEXTJS_BUILD_DIR);
this.warnIfMissing(dir);
return dir;
}
warnIfMissing(dir) {
if (!fs.existsSync(dir)) {
console.warn(`Warning: ${dir} does not exist.`);
}
}
mockNextBuildDir() {
function createMockDirAndFile(dir) {
fs.mkdirSync(dir, { recursive: true });
fs.writeFileSync(path.join(dir, 'package.json'), '{}', 'utf8');
}
const buildDirExists = this.assertBuildDirExists(false);
if (!buildDirExists) {
// mock .open-next
createMockDirAndFile(this.getNextBuildDir());
createMockDirAndFile(this.nextServerFnDir);
createMockDirAndFile(this.nextImageFnDir);
createMockDirAndFile(this.nextRevalidateFnDir);
createMockDirAndFile(this.nextRevalidateDynamoDBProviderFnDir);
createMockDirAndFile(this.nextStaticDir);
createMockDirAndFile(this.nextCacheDir);
}
}
}
exports.NextjsBuild = NextjsBuild;
_a = JSII_RTTI_SYMBOL_1;
NextjsBuild[_a] = { fqn: "cdk-nextjs-standalone.NextjsBuild", version: "4.3.0" };
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{ execSync } from 'child_process';\nimport * as fs from 'fs';\nimport * as path from 'path';\nimport { Stack, Token } from 'aws-cdk-lib';\nimport { Construct } from 'constructs';\nimport {\n  NEXTJS_BUILD_DIR,\n  NEXTJS_BUILD_DYNAMODB_PROVIDER_FN_DIR,\n  NEXTJS_BUILD_IMAGE_FN_DIR,\n  NEXTJS_BUILD_REVALIDATE_FN_DIR,\n  NEXTJS_BUILD_SERVER_FN_DIR,\n  NEXTJS_CACHE_DIR,\n  NEXTJS_STATIC_DIR,\n} from './constants';\nimport type { NextjsProps } from './Nextjs';\nimport { NextjsBucketDeployment } from './NextjsBucketDeployment';\nimport { listDirectory } from './utils/list-directories';\n\nexport interface NextjsBuildProps {\n  /**\n   * @see {@link NextjsProps.buildCommand}\n   */\n  readonly buildCommand?: NextjsProps['buildCommand'];\n  /**\n   * @see {@link NextjsProps.buildPath}\n   */\n  readonly buildPath?: NextjsProps['buildPath'];\n  /**\n   * @see {@link NextjsProps.environment}\n   */\n  readonly environment?: NextjsProps['environment'];\n  /**\n   * @see {@link NextjsProps.nextjsPath}\n   */\n  readonly nextjsPath: NextjsProps['nextjsPath'];\n  /**\n   * @see {@link NextjsProps.quiet}\n   */\n  readonly quiet?: NextjsProps['quiet'];\n  /**\n   * @see {@link NextjsProps.skipBuild}\n   */\n  readonly skipBuild?: NextjsProps['skipBuild'];\n  /**\n   * @see {@link NextjsProps.streaming}\n   */\n  readonly streaming?: NextjsProps['streaming'];\n}\n\n/**\n * Build Next.js app.\n */\nexport class NextjsBuild extends Construct {\n  /**\n   * Contains server code and dependencies.\n   */\n  public get nextServerFnDir(): string {\n    const dir = path.join(this.getNextBuildDir(), NEXTJS_BUILD_SERVER_FN_DIR);\n    this.warnIfMissing(dir);\n    return dir;\n  }\n  /**\n   * Contains function for processessing image requests.\n   * Should be arm64.\n   */\n  public get nextImageFnDir(): string {\n    const fnPath = path.join(this.getNextBuildDir(), NEXTJS_BUILD_IMAGE_FN_DIR);\n    this.warnIfMissing(fnPath);\n    return fnPath;\n  }\n  /**\n   * Contains function for processing items from revalidation queue.\n   */\n  public get nextRevalidateFnDir(): string {\n    const fnPath = path.join(this.getNextBuildDir(), NEXTJS_BUILD_REVALIDATE_FN_DIR);\n    this.warnIfMissing(fnPath);\n    return fnPath;\n  }\n  /**\n   * Contains function for inserting revalidation items into the table.\n   */\n  public get nextRevalidateDynamoDBProviderFnDir(): string {\n    const fnPath = path.join(this.getNextBuildDir(), NEXTJS_BUILD_DYNAMODB_PROVIDER_FN_DIR);\n    this.warnIfMissing(fnPath);\n    return fnPath;\n  }\n  /**\n   * Static files containing client-side code.\n   */\n  public get nextStaticDir(): string {\n    const dir = path.join(this.getNextBuildDir(), NEXTJS_STATIC_DIR);\n    this.warnIfMissing(dir);\n    return dir;\n  }\n  /**\n   * Cache directory for generated data.\n   */\n  public get nextCacheDir(): string {\n    const dir = path.join(this.getNextBuildDir(), NEXTJS_CACHE_DIR);\n    this.warnIfMissing(dir);\n    return dir;\n  }\n\n  public props: NextjsBuildProps;\n\n  constructor(scope: Construct, id: string, props: NextjsBuildProps) {\n    super(scope, id);\n    this.props = props;\n    this.validatePaths();\n\n    const bundlingRequired = Stack.of(this).bundlingRequired;\n    const skipBuild = this.props.skipBuild;\n\n    // for more info see docs/code-deployment-flow.md Conditional Build Logic section\n    if (bundlingRequired) {\n      // deploy/synth\n      if (skipBuild) {\n        this.assertBuildDirExists(true);\n      } else {\n        this.build();\n      }\n    } else {\n      // destroy\n      this.mockNextBuildDir();\n    }\n  }\n\n  /**\n   * Validate required paths/files for NextjsBuild\n   */\n  private validatePaths() {\n    const nextjsPath = this.props.nextjsPath;\n    // validate site path exists\n    if (!fs.existsSync(nextjsPath)) {\n      throw new Error(`Invalid nextjsPath ${nextjsPath} - directory does not exist at \"${path.resolve(nextjsPath)}\"`);\n    }\n    // Ensure that the site has a build script defined\n    if (!fs.existsSync(path.join(nextjsPath, 'package.json'))) {\n      throw new Error(`No package.json found at \"${nextjsPath}\".`);\n    }\n    const packageJson = JSON.parse(fs.readFileSync(path.join(nextjsPath, 'package.json'), 'utf8'));\n    if (!packageJson.scripts || !packageJson.scripts.build) {\n      throw new Error(`No \"build\" script found within package.json in \"${nextjsPath}\".`);\n    }\n  }\n\n  private build() {\n    const buildPath = this.props.buildPath ?? this.props.nextjsPath;\n    const buildCommand = this.props.buildCommand ?? `npx @opennextjs/aws@^3 build`;\n    // run build\n    if (!this.props.quiet) {\n      console.debug(`Running \"${buildCommand}\" in`, buildPath);\n    }\n    // will throw if build fails - which is desired\n    execSync(buildCommand, {\n      cwd: buildPath,\n      stdio: this.props.quiet ? 'ignore' : 'inherit',\n      env: this.getBuildEnvVars(),\n    });\n  }\n\n  /**\n   * Gets environment variables for build time (when `open-next build` is called).\n   * Unresolved tokens are replace with placeholders like {{ TOKEN_NAME }} and\n   * will be resolved later in `NextjsBucketDeployment` custom resource.\n   */\n  private getBuildEnvVars() {\n    const env: Record<string, string> = {};\n    for (const [k, v] of Object.entries(process.env)) {\n      if (v) {\n        env[k] = v;\n      }\n    }\n    for (const [k, v] of Object.entries(this.props.environment || {})) {\n      // don't replace server only env vars for static assets\n      if (Token.isUnresolved(v) && k.startsWith('NEXT_PUBLIC_')) {\n        env[k] = NextjsBucketDeployment.getSubstitutionValue(k);\n      } else {\n        env[k] = v;\n      }\n    }\n    return env;\n  }\n\n  readPublicFileList() {\n    if (!fs.existsSync(this.nextStaticDir)) return [];\n    return listDirectory(this.nextStaticDir).map((file) => path.join('/', path.relative(this.nextStaticDir, file)));\n  }\n\n  private assertBuildDirExists(throwIfMissing = true) {\n    const dir = this.getNextBuildDir();\n    if (!fs.existsSync(dir)) {\n      if (throwIfMissing) {\n        throw new Error(`Build directory \"${dir}\" does not exist. Try removing skipBuild: true option.`);\n      }\n      return false;\n    }\n    return true;\n  }\n\n  private getNextBuildDir(): string {\n    const dir = path.resolve(this.props.nextjsPath, NEXTJS_BUILD_DIR);\n    this.warnIfMissing(dir);\n    return dir;\n  }\n\n  private warnIfMissing(dir: string) {\n    if (!fs.existsSync(dir)) {\n      console.warn(`Warning: ${dir} does not exist.`);\n    }\n  }\n\n  private mockNextBuildDir() {\n    function createMockDirAndFile(dir: string) {\n      fs.mkdirSync(dir, { recursive: true });\n      fs.writeFileSync(path.join(dir, 'package.json'), '{}', 'utf8');\n    }\n\n    const buildDirExists = this.assertBuildDirExists(false);\n    if (!buildDirExists) {\n      // mock .open-next\n      createMockDirAndFile(this.getNextBuildDir());\n      createMockDirAndFile(this.nextServerFnDir);\n      createMockDirAndFile(this.nextImageFnDir);\n      createMockDirAndFile(this.nextRevalidateFnDir);\n      createMockDirAndFile(this.nextRevalidateDynamoDBProviderFnDir);\n      createMockDirAndFile(this.nextStaticDir);\n      createMockDirAndFile(this.nextCacheDir);\n    }\n  }\n}\n"]}