@cdktf/hcl2json
Version:
Transform HCL into JSON
177 lines • 21.7 kB
JavaScript
;
// Copyright (c) HashiCorp, Inc
// SPDX-License-Identifier: MPL-2.0
// eslint-disable-next-line @typescript-eslint/triple-slash-reference
/// <reference lib="dom" />
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getExpressionAst = exports.getReferencesInExpression = exports.convertFiles = exports.parse = void 0;
// Inspired by
// https://github.com/ts-terraform/ts-terraform
// https://github.com/aaronpowell/webpack-golang-wasm-async-loader
const fs = __importStar(require("fs-extra"));
const path_1 = require("path");
const deepmerge_1 = require("./deepmerge");
const zlib_1 = require("zlib");
const references_1 = require("./references");
const util_1 = require("./util");
// eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
const jsRoot = {};
function sleep() {
return new Promise((resolve) => {
setTimeout(resolve, 0);
});
}
function goBridge(getBytes) {
let ready = false;
async function init() {
// After: https://github.com/golang/go/commit/680caf15355057ca84857a2a291b6f5c44e73329
// Go 1.19+ has a different entrypoint
await Promise.resolve().then(() => __importStar(require(`../wasm/bridge_wasm_exec.js`)));
const go = new global.Go();
const bytes = await getBytes;
const result = await WebAssembly.instantiate(bytes, go.importObject);
global.__parse_terraform_config_wasm__ = jsRoot;
void go.run(result.instance);
ready = true;
}
init().catch((error) => {
throw error;
});
const proxy = new Proxy({}, {
get: (_, key) => {
return async (...args) => {
while (!ready) {
await sleep();
}
if (!(key in jsRoot)) {
throw new Error(`There is nothing defined with the name "${key.toString()}"`);
}
if (typeof jsRoot[key] !== "function") {
return jsRoot[key];
}
return new Promise((resolve, reject) => {
const cb = (err, ...msg) =>
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
err ? reject(new Error(err)) : resolve(...msg);
const run = () => {
jsRoot[key].apply(undefined, [...args, cb]);
};
run();
});
};
},
});
return proxy;
}
const loadWasm = async () => {
return (0, zlib_1.gunzipSync)(await fs.readFile((0, path_1.join)(__dirname, "..", "main.wasm.gz")));
};
const wasm = goBridge(loadWasm());
async function parse(filename, contents) {
const res = await wasm.parse(filename, contents);
return JSON.parse(res);
}
exports.parse = parse;
async function convertFiles(workingDirectory) {
let tfFileContents = "";
const tfJSONFileContents = [];
for (const file of fs.readdirSync(workingDirectory)) {
const filePath = (0, path_1.resolve)(workingDirectory, file);
if (!fs.lstatSync(filePath).isDirectory()) {
if (file.match(/\.tf$/)) {
tfFileContents += fs.readFileSync(filePath, "utf-8");
tfFileContents += "\n";
}
else if (file.match(/\.tf\.json$/)) {
tfJSONFileContents.push(JSON.parse(fs.readFileSync(filePath, "utf-8")));
}
}
}
if (tfFileContents === "" && tfJSONFileContents.length === 0) {
console.error(`No '.tf' or '.tf.json' files found in ${workingDirectory}`);
return {};
}
return (0, deepmerge_1.deepMerge)(await parse("hcl2json.tf", tfFileContents), ...tfJSONFileContents);
}
exports.convertFiles = convertFiles;
/**
* Parse a Terraform expression and return the AST. This function expects a string input, and will wrap the expression in quotes if it is not already quoted.
* @param filename The filename to use for the expression. This is used for error reporting.
* @param expression The expression to parse.
* @returns An array of References found in the expression.
*/
async function getReferencesInExpression(filename, expression) {
// We have to do this twice because of the problem with HEREDOCS
// Our current hcl2json implementation removes HEREDOCS and replaces them
// with a multi-line string, which is causing all kinds of problems
let offset = 0;
let quoteWrappedExpression = expression;
if (!expression.startsWith('"')) {
quoteWrappedExpression = `"${expression}"`;
offset = 1;
}
const { wrap: wrappedExpression, wrapOffset: startOffset } = (0, util_1.wrapTerraformExpression)(`${quoteWrappedExpression}`);
offset += startOffset;
const ast = await getExpressionAst(filename, wrappedExpression);
if (!ast) {
return [];
}
const refs = (0, references_1.findAllReferencesInAst)(expression, ast);
if (wrappedExpression === expression) {
return refs;
}
return refs.map((ref) => {
return {
...ref,
startPosition: ref.startPosition - offset,
endPosition: ref.endPosition - offset,
};
});
}
exports.getReferencesInExpression = getReferencesInExpression;
/**
* Parse a Terraform expression and return the AST. The expression does not need to be a Terraform string.
* @param filename The filename to use for the expression. This is used for error reporting.
* @param expression The expression to parse.
* @returns The AST for the expression.
*
* The returned AST has the following structure:
* - type: The type of the node. This is a string.
* - range: This contains the start and end of the node in the expression.
* - children: This contains the children of the node. This is an array of nodes.
* - meta: This contains metadata about the node. This is an object, and varies depending on the type of the node.
*/
async function getExpressionAst(filename, expression) {
const res = await wasm.getExpressionAst(filename, expression);
const ast = JSON.parse(res);
if (!ast) {
return null;
}
return ast;
}
exports.getExpressionAst = getExpressionAst;
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Copyright (c) HashiCorp, Inc\n// SPDX-License-Identifier: MPL-2.0\n// eslint-disable-next-line @typescript-eslint/triple-slash-reference\n/// <reference lib=\"dom\" />\n\n// Inspired by\n// https://github.com/ts-terraform/ts-terraform\n// https://github.com/aaronpowell/webpack-golang-wasm-async-loader\n\nimport * as fs from \"fs-extra\";\nimport { join, resolve } from \"path\";\nimport { deepMerge } from \"./deepmerge\";\nimport { gunzipSync } from \"zlib\";\nimport { Reference, findAllReferencesInAst } from \"./references\";\nimport { ExpressionType } from \"./syntax-tree\";\nimport { wrapTerraformExpression } from \"./util\";\n\ninterface GoBridge {\n  parse: (filename: string, hcl: string) => Promise<string>;\n  parseExpression: (filename: string, hcl: string) => Promise<string>;\n  getExpressionAst: (filename: string, hcl: string) => Promise<string>;\n}\n\n// eslint-disable-next-line @typescript-eslint/no-unsafe-function-type\nconst jsRoot: Record<string, Function> = {};\n\nfunction sleep() {\n  return new Promise((resolve) => {\n    setTimeout(resolve, 0);\n  });\n}\n\nfunction goBridge(getBytes: Promise<Buffer>) {\n  let ready = false;\n\n  async function init() {\n    // After: https://github.com/golang/go/commit/680caf15355057ca84857a2a291b6f5c44e73329\n    // Go 1.19+ has a different entrypoint\n    await import(`../wasm/bridge_wasm_exec.js`);\n    const go = new (global as any).Go();\n    const bytes = await getBytes;\n    const result = await WebAssembly.instantiate(bytes, go.importObject);\n    (global as any).__parse_terraform_config_wasm__ = jsRoot;\n    void go.run(result.instance);\n    ready = true;\n  }\n\n  init().catch((error) => {\n    throw error;\n  });\n\n  const proxy = new Proxy({} as GoBridge, {\n    get: (_, key: string) => {\n      return async (...args: unknown[]) => {\n        while (!ready) {\n          await sleep();\n        }\n\n        if (!(key in jsRoot)) {\n          throw new Error(\n            `There is nothing defined with the name \"${key.toString()}\"`,\n          );\n        }\n\n        if (typeof jsRoot[key] !== \"function\") {\n          return jsRoot[key];\n        }\n\n        return new Promise((resolve, reject) => {\n          const cb = (err: string, ...msg: string[]) =>\n            // eslint-disable-next-line @typescript-eslint/ban-ts-comment\n            // @ts-ignore\n            err ? reject(new Error(err)) : resolve(...msg);\n\n          const run = () => {\n            jsRoot[key].apply(undefined, [...args, cb]);\n          };\n\n          run();\n        });\n      };\n    },\n  });\n\n  return proxy;\n}\n\nconst loadWasm = async () => {\n  return gunzipSync(await fs.readFile(join(__dirname, \"..\", \"main.wasm.gz\")));\n};\n\nconst wasm = goBridge(loadWasm());\n\nexport async function parse(\n  filename: string,\n  contents: string,\n): Promise<Record<string, any>> {\n  const res = await wasm.parse(filename, contents);\n  return JSON.parse(res);\n}\n\nexport async function convertFiles(\n  workingDirectory: string,\n): Promise<Record<string, any>> {\n  let tfFileContents = \"\";\n  const tfJSONFileContents: Record<string, any>[] = [];\n\n  for (const file of fs.readdirSync(workingDirectory)) {\n    const filePath = resolve(workingDirectory, file);\n    if (!fs.lstatSync(filePath).isDirectory()) {\n      if (file.match(/\\.tf$/)) {\n        tfFileContents += fs.readFileSync(filePath, \"utf-8\");\n        tfFileContents += \"\\n\";\n      } else if (file.match(/\\.tf\\.json$/)) {\n        tfJSONFileContents.push(JSON.parse(fs.readFileSync(filePath, \"utf-8\")));\n      }\n    }\n  }\n\n  if (tfFileContents === \"\" && tfJSONFileContents.length === 0) {\n    console.error(`No '.tf' or '.tf.json' files found in ${workingDirectory}`);\n    return {};\n  }\n\n  return deepMerge(\n    await parse(\"hcl2json.tf\", tfFileContents),\n    ...tfJSONFileContents,\n  );\n}\n\n/**\n * Parse a Terraform expression and return the AST. This function expects a string input, and will wrap the expression in quotes if it is not already quoted.\n * @param filename The filename to use for the expression. This is used for error reporting.\n * @param expression The expression to parse.\n * @returns An array of References found in the expression.\n */\nexport async function getReferencesInExpression(\n  filename: string,\n  expression: string,\n): Promise<Reference[]> {\n  // We have to do this twice because of the problem with HEREDOCS\n  // Our current hcl2json implementation removes HEREDOCS and replaces them\n  // with a multi-line string, which is causing all kinds of problems\n  let offset = 0;\n  let quoteWrappedExpression = expression;\n  if (!expression.startsWith('\"')) {\n    quoteWrappedExpression = `\"${expression}\"`;\n    offset = 1;\n  }\n\n  const { wrap: wrappedExpression, wrapOffset: startOffset } =\n    wrapTerraformExpression(`${quoteWrappedExpression}`);\n\n  offset += startOffset;\n\n  const ast = await getExpressionAst(filename, wrappedExpression);\n  if (!ast) {\n    return [];\n  }\n\n  const refs = findAllReferencesInAst(expression, ast);\n  if (wrappedExpression === expression) {\n    return refs;\n  }\n\n  return refs.map((ref) => {\n    return {\n      ...ref,\n      startPosition: ref.startPosition - offset,\n      endPosition: ref.endPosition - offset,\n    };\n  });\n}\n\n/**\n * Parse a Terraform expression and return the AST. The expression does not need to be a Terraform string.\n * @param filename The filename to use for the expression. This is used for error reporting.\n * @param expression The expression to parse.\n * @returns The AST for the expression.\n *\n *   The returned AST has the following structure:\n *   - type: The type of the node. This is a string.\n *   - range: This contains the start and end of the node in the expression.\n *   - children: This contains the children of the node. This is an array of nodes.\n *   - meta: This contains metadata about the node. This is an object, and varies depending on the type of the node.\n */\nexport async function getExpressionAst(\n  filename: string,\n  expression: string,\n): Promise<ExpressionType | null> {\n  const res = await wasm.getExpressionAst(filename, expression);\n  const ast = JSON.parse(res) as ExpressionType;\n\n  if (!ast) {\n    return null;\n  }\n\n  return ast;\n}\n"]}