projen
Version:
CDK for software projects
125 lines • 21.2 kB
JavaScript
;
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.LambdaExtension = void 0;
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const path_1 = require("path");
const case_1 = require("case");
const internal_1 = require("./internal");
const lambda_function_1 = require("./lambda-function");
const component_1 = require("../component");
const javascript_1 = require("../javascript");
const source_code_1 = require("../source-code");
/**
* Create a Lambda Extension
*/
class LambdaExtension extends component_1.Component {
constructor(project, options) {
super(project);
const basePath = (0, path_1.join)((0, path_1.dirname)(options.entrypoint), (0, path_1.basename)(options.entrypoint, internal_1.TYPESCRIPT_LAMBDA_EXTENSION_EXT));
const name = options.name ?? (0, path_1.basename)(basePath);
const bundler = javascript_1.Bundler.of(project);
if (!bundler) {
throw new Error("No bundler found. Please add a Bundler component to your project.");
}
const compatibleRuntimes = options.compatibleRuntimes ?? [
lambda_function_1.LambdaRuntime.NODEJS_22_X,
lambda_function_1.LambdaRuntime.NODEJS_20_X,
lambda_function_1.LambdaRuntime.NODEJS_18_X,
lambda_function_1.LambdaRuntime.NODEJS_16_X,
lambda_function_1.LambdaRuntime.NODEJS_14_X,
lambda_function_1.LambdaRuntime.NODEJS_12_X,
];
if (compatibleRuntimes.length === 0) {
throw new Error("Compatible runtimes must include at least one runtime");
}
// Use the lowest runtime version to bundle
const [bundlerRuntime] = compatibleRuntimes.sort((a, b) => a.functionRuntime.localeCompare(b.functionRuntime));
// Allow extension code to import dev-deps since they are only needed
// during bundling
const eslint = javascript_1.Eslint.of(project);
eslint?.allowDevDeps(options.entrypoint);
const bundle = bundler.addBundle(options.entrypoint, {
platform: bundlerRuntime.esbuildPlatform,
target: bundlerRuntime.esbuildTarget,
externals: bundlerRuntime.defaultExternals,
outfile: `extensions/${name}`,
// Make the output executable because Lambda expects to run
// extensions as stand-alone programs alongside the main lambda
// process.
executable: true,
...options.bundlingOptions,
});
const constructFile = options.constructFile ?? `${basePath}-layer-version.ts`;
new LambdaLayerConstruct(project, {
constructFile: constructFile,
constructName: options.constructName,
assetDir: bundle.outdir,
compatibleRuntimes: compatibleRuntimes,
description: `Provides a Lambda Extension \`${name}\` from ${(0, internal_1.convertToPosixPath)(options.entrypoint)}`,
cdkDeps: options.cdkDeps,
});
}
}
exports.LambdaExtension = LambdaExtension;
_a = JSII_RTTI_SYMBOL_1;
LambdaExtension[_a] = { fqn: "projen.awscdk.LambdaExtension", version: "0.99.51" };
class LambdaLayerConstruct extends source_code_1.SourceCode {
constructor(project, options) {
super(project, options.constructFile);
const src = this;
const cdkDeps = options.cdkDeps;
const constructName = options.constructName ?? (0, case_1.pascal)((0, path_1.basename)(options.constructFile, ".ts"));
const propsType = `${constructName}Props`;
const assetDir = (0, path_1.relative)((0, path_1.dirname)(options.constructFile), options.assetDir);
if (src.marker) {
src.line(`// ${src.marker}`);
}
src.line("import * as path from 'path';");
if (cdkDeps.cdkMajorVersion === 1) {
src.line("import * as lambda from '@aws-cdk/aws-lambda';");
src.line("import { Construct } from '@aws-cdk/core';");
cdkDeps.addV1Dependencies("@aws-cdk/aws-lambda");
cdkDeps.addV1Dependencies("@aws-cdk/core");
}
else {
src.line("import * as lambda from 'aws-cdk-lib/aws-lambda';");
src.line("import { Construct } from 'constructs';");
}
src.line();
src.line("/**");
src.line(` * Props for ${constructName}`);
src.line(" */");
src.open(`export interface ${propsType} extends lambda.LayerVersionOptions {`);
src.close("}");
src.line();
src.line("/**");
src.line(` * ${options.description}`);
src.line(" */");
src.open(`export class ${constructName} extends lambda.LayerVersion {`);
src.open(`constructor(scope: Construct, id: string, props?: ${propsType}) {`);
src.open("super(scope, id, {");
src.line(`description: ${encodeCodeString(options.description)},`);
src.line("...props,");
src.open("compatibleRuntimes: [");
for (const runtime of options.compatibleRuntimes) {
src.line(`new lambda.Runtime('${runtime.functionRuntime}', lambda.RuntimeFamily.NODEJS),`);
}
src.close("],");
src.open(`code: lambda.Code.fromAsset(path.join(__dirname,`);
src.line(`${encodeCodeString((0, internal_1.convertToPosixPath)(assetDir))})),`);
src.close();
src.close("});");
src.close("}");
src.close("}");
}
}
/**
* Encodes a string for embedding in source code.
*/
function encodeCodeString(value) {
const json = JSON.stringify(value);
const escapedString = json.substring(1, json.length - 1).replace(/'/g, "\\'");
return `'${escapedString}'`;
}
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{ basename, dirname, join, relative } from \"path\";\nimport { pascal } from \"case\";\nimport type { AwsCdkDeps } from \"./awscdk-deps\";\nimport {\n  convertToPosixPath,\n  TYPESCRIPT_LAMBDA_EXTENSION_EXT,\n} from \"./internal\";\nimport { LambdaRuntime } from \"./lambda-function\";\nimport { Component } from \"../component\";\nimport type { BundlingOptions } from \"../javascript\";\nimport { Bundler, Eslint } from \"../javascript\";\nimport type { Project } from \"../project\";\nimport { SourceCode } from \"../source-code\";\n\n/**\n * Common options for creating lambda extensions.\n */\nexport interface LambdaExtensionCommonOptions {\n  /**\n   * The extension's compatible runtimes.\n   */\n  readonly compatibleRuntimes?: LambdaRuntime[];\n\n  /**\n   * Bundling options for this AWS Lambda extension.\n   *\n   * If not specified the default bundling options specified for the project\n   * `Bundler` instance will be used.\n   *\n   * @default - defaults\n   */\n  readonly bundlingOptions?: BundlingOptions;\n}\n\n/**\n * Options for creating lambda extensions.\n */\nexport interface LambdaExtensionOptions extends LambdaExtensionCommonOptions {\n  /**\n   * Name of the extension\n   *\n   * @default - Derived from the entrypoint filename.\n   */\n  readonly name?: string;\n\n  /**\n   * A path from the project root directory to a TypeScript file which contains\n   * the AWS Lambda extension entrypoint (stand-alone script).\n   *\n   * This is relative to the root directory of the project.\n   *\n   * @example \"src/subdir/foo.lambda-extension.ts\"\n   */\n  readonly entrypoint: string;\n\n  /**\n   * AWS CDK dependency manager.\n   */\n  readonly cdkDeps: AwsCdkDeps;\n\n  /**\n   * The name of the generated TypeScript source file. This file should also be\n   * under the source tree.\n   *\n   * @default - The name of the entrypoint file, with the `-layer-version.ts`\n   * suffix instead of `.lambda-extension.ts`.\n   */\n  readonly constructFile?: string;\n\n  /**\n   * The name of the generated `lambda.LayerVersion` subclass.\n   *\n   * @default - A pascal cased version of the name of the entrypoint file, with\n   * the extension `LayerVersion` (e.g. `AppConfigLayerVersion`).\n   */\n  readonly constructName?: string;\n}\n\n/**\n * Create a Lambda Extension\n */\nexport class LambdaExtension extends Component {\n  constructor(project: Project, options: LambdaExtensionOptions) {\n    super(project);\n\n    const basePath = join(\n      dirname(options.entrypoint),\n      basename(options.entrypoint, TYPESCRIPT_LAMBDA_EXTENSION_EXT),\n    );\n\n    const name = options.name ?? basename(basePath);\n\n    const bundler = Bundler.of(project);\n    if (!bundler) {\n      throw new Error(\n        \"No bundler found. Please add a Bundler component to your project.\",\n      );\n    }\n\n    const compatibleRuntimes = options.compatibleRuntimes ?? [\n      LambdaRuntime.NODEJS_22_X,\n      LambdaRuntime.NODEJS_20_X,\n      LambdaRuntime.NODEJS_18_X,\n      LambdaRuntime.NODEJS_16_X,\n      LambdaRuntime.NODEJS_14_X,\n      LambdaRuntime.NODEJS_12_X,\n    ];\n\n    if (compatibleRuntimes.length === 0) {\n      throw new Error(\"Compatible runtimes must include at least one runtime\");\n    }\n\n    // Use the lowest runtime version to bundle\n    const [bundlerRuntime] = compatibleRuntimes.sort((a, b) =>\n      a.functionRuntime.localeCompare(b.functionRuntime),\n    );\n\n    // Allow extension code to import dev-deps since they are only needed\n    // during bundling\n    const eslint = Eslint.of(project);\n    eslint?.allowDevDeps(options.entrypoint);\n\n    const bundle = bundler.addBundle(options.entrypoint, {\n      platform: bundlerRuntime.esbuildPlatform,\n      target: bundlerRuntime.esbuildTarget,\n      externals: bundlerRuntime.defaultExternals,\n      outfile: `extensions/${name}`,\n      // Make the output executable because Lambda expects to run\n      // extensions as stand-alone programs alongside the main lambda\n      // process.\n      executable: true,\n      ...options.bundlingOptions,\n    });\n\n    const constructFile =\n      options.constructFile ?? `${basePath}-layer-version.ts`;\n\n    new LambdaLayerConstruct(project, {\n      constructFile: constructFile,\n      constructName: options.constructName,\n      assetDir: bundle.outdir,\n      compatibleRuntimes: compatibleRuntimes,\n      description: `Provides a Lambda Extension \\`${name}\\` from ${convertToPosixPath(\n        options.entrypoint,\n      )}`,\n      cdkDeps: options.cdkDeps,\n    });\n  }\n}\n\ninterface LambdaLayerConstructOptions {\n  readonly assetDir: string;\n  readonly compatibleRuntimes: LambdaRuntime[];\n  readonly description: string;\n  readonly constructFile: string;\n  readonly constructName?: string;\n  readonly cdkDeps: AwsCdkDeps;\n}\n\nclass LambdaLayerConstruct extends SourceCode {\n  constructor(project: Project, options: LambdaLayerConstructOptions) {\n    super(project, options.constructFile);\n\n    const src = this;\n    const cdkDeps = options.cdkDeps;\n\n    const constructName =\n      options.constructName ?? pascal(basename(options.constructFile, \".ts\"));\n    const propsType = `${constructName}Props`;\n\n    const assetDir = relative(dirname(options.constructFile), options.assetDir);\n\n    if (src.marker) {\n      src.line(`// ${src.marker}`);\n    }\n    src.line(\"import * as path from 'path';\");\n\n    if (cdkDeps.cdkMajorVersion === 1) {\n      src.line(\"import * as lambda from '@aws-cdk/aws-lambda';\");\n      src.line(\"import { Construct } from '@aws-cdk/core';\");\n      cdkDeps.addV1Dependencies(\"@aws-cdk/aws-lambda\");\n      cdkDeps.addV1Dependencies(\"@aws-cdk/core\");\n    } else {\n      src.line(\"import * as lambda from 'aws-cdk-lib/aws-lambda';\");\n      src.line(\"import { Construct } from 'constructs';\");\n    }\n\n    src.line();\n\n    src.line(\"/**\");\n    src.line(` * Props for ${constructName}`);\n    src.line(\" */\");\n    src.open(\n      `export interface ${propsType} extends lambda.LayerVersionOptions {`,\n    );\n    src.close(\"}\");\n    src.line();\n\n    src.line(\"/**\");\n    src.line(` * ${options.description}`);\n    src.line(\" */\");\n    src.open(`export class ${constructName} extends lambda.LayerVersion {`);\n    src.open(\n      `constructor(scope: Construct, id: string, props?: ${propsType}) {`,\n    );\n\n    src.open(\"super(scope, id, {\");\n    src.line(`description: ${encodeCodeString(options.description)},`);\n    src.line(\"...props,\");\n\n    src.open(\"compatibleRuntimes: [\");\n    for (const runtime of options.compatibleRuntimes) {\n      src.line(\n        `new lambda.Runtime('${runtime.functionRuntime}', lambda.RuntimeFamily.NODEJS),`,\n      );\n    }\n    src.close(\"],\");\n\n    src.open(`code: lambda.Code.fromAsset(path.join(__dirname,`);\n    src.line(`${encodeCodeString(convertToPosixPath(assetDir))})),`);\n    src.close();\n    src.close(\"});\");\n\n    src.close(\"}\");\n    src.close(\"}\");\n  }\n}\n\n/**\n * Encodes a string for embedding in source code.\n */\nfunction encodeCodeString(value: string) {\n  const json = JSON.stringify(value);\n  const escapedString = json.substring(1, json.length - 1).replace(/'/g, \"\\\\'\");\n  return `'${escapedString}'`;\n}\n"]}