UNPKG

@scloud/lambda-api

Version:

Lambda handler for API Gateway proxy requests

111 lines 13.3 kB
"use strict"; var __importDefault = (this && this.__importDefault) || function (mod) { return (mod && mod.__esModule) ? mod : { "default": mod }; }; Object.defineProperty(exports, "__esModule", { value: true }); exports.apiHandler = apiHandler; const types_1 = require("./types"); const helpers_1 = require("./helpers"); const v4_1 = __importDefault(require("zod/v4")); function apiErrorResponse(e) { // Intentional API error response if (e instanceof types_1.ApiError) { return { statusCode: e.statusCode, body: e.body, }; } // Unhandled error if (e) console.error(e instanceof Error ? e.stack : e); return { statusCode: 500, body: 'Internal server error', }; } /** * API route handler */ async function apiHandler(event, context, routes, errorHandler = undefined, catchAll = undefined) { const request = (0, helpers_1.parseRequest)(event); let response; try { const match = (0, helpers_1.matchRoute)(routes, request.path); if (match.params) request.pathParameters = match.params; if (match.methods) { const route = match.methods[request.method]; if (!route) throw new types_1.ApiError(405, 'Method not allowed'); // Verify request body if (route.request?.body) { const parsed = route.request.body.safeParse(request.body); if (!parsed.success) { throw new types_1.ApiError(400, v4_1.default.treeifyError(parsed.error)); } request.body = parsed.data; } response = await route.handler(request); // Verify response body if (route.response?.body) { const parsed = route.response.body.safeParse(response.body); if (!parsed.success) { console.error('Invalid response body:', request.method, request.path, JSON.stringify(v4_1.default.treeifyError(parsed.error), null, 2)); response = undefined; // Remove the response so it can be replaced by the error handler throw new types_1.ApiError(500, 'Internal server error'); } response.body = parsed.data; } } else if (catchAll) { // Catch-all / 404 response = await catchAll.handler(request); } else { throw new types_1.ApiError(404, 'Not found'); } } catch (e) { if (errorHandler) { try { // errorHandler can optionally return undefined to request standard error handling: response = await errorHandler(request, e); } catch (ee) { response = apiErrorResponse(ee); } } // Standard error handling response = response ?? apiErrorResponse(e); } // Translate the response to an API Gateway Proxy result let body; const headers = response.headers || {}; if (typeof response.body === 'string') { // Use the body as-is // Add text/plain if no Content-Type header is set: if (!(0, helpers_1.getHeader)('Content-Type', headers)) (0, helpers_1.setHeader)('Content-Type', 'text/plain', headers); body = response.body; } else if (response.body) { // Stringify the response object // API Gateway returns application/json by default body = JSON.stringify(response.body); } // Prepare response const result = { statusCode: response.statusCode ?? 200, headers, body: body || '', }; // Add cookie headers const cookieHeaders = (0, helpers_1.buildCookie)(response); if (cookieHeaders) { result.multiValueHeaders = { 'Set-Cookie': cookieHeaders, }; } return result; } //# sourceMappingURL=data:application/json;base64,{"version":3,"file":"handler.js","sourceRoot":"","sources":["../../src/handler.ts"],"names":[],"mappings":";;;;;AAgCA,gCAyFC;AApHD,mCAGiB;AACjB,uCAAwF;AACxF,gDAAuB;AAEvB,SAAS,gBAAgB,CAAC,CAAW;IACnC,iCAAiC;IACjC,IAAI,CAAC,YAAY,gBAAQ,EAAE,CAAC;QAC1B,OAAO;YACL,UAAU,EAAE,CAAC,CAAC,UAAU;YACxB,IAAI,EAAE,CAAC,CAAC,IAAI;SACb,CAAC;IACJ,CAAC;IAED,kBAAkB;IAClB,IAAI,CAAC;QAAE,OAAO,CAAC,KAAK,CAAC,CAAC,YAAY,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IACvD,OAAO;QACL,UAAU,EAAE,GAAG;QACf,IAAI,EAAE,uBAAuB;KAC9B,CAAC;AACJ,CAAC;AAED;;GAEG;AACI,KAAK,UAAU,UAAU,CAC9B,KAA2B,EAC3B,OAAgB,EAChB,MAAc,EACd,eAA4F,SAAS,EACrG,WAAgC,SAAS;IAEzC,MAAM,OAAO,GAAG,IAAA,sBAAY,EAAC,KAAK,CAAC,CAAC;IAEpC,IAAI,QAA8B,CAAC;IACnC,IAAI,CAAC;QACH,MAAM,KAAK,GAAG,IAAA,oBAAU,EAAC,MAAM,EAAE,OAAO,CAAC,IAAI,CAAC,CAAC;QAC/C,IAAI,KAAK,CAAC,MAAM;YAAE,OAAO,CAAC,cAAc,GAAG,KAAK,CAAC,MAAM,CAAC;QAExD,IAAI,KAAK,CAAC,OAAO,EAAE,CAAC;YAClB,MAAM,KAAK,GAAG,KAAK,CAAC,OAAO,CAAC,OAAO,CAAC,MAAqB,CAAC,CAAC;YAC3D,IAAI,CAAC,KAAK;gBAAE,MAAM,IAAI,gBAAQ,CAAC,GAAG,EAAE,oBAAoB,CAAC,CAAC;YAE1D,sBAAsB;YACtB,IAAI,KAAK,CAAC,OAAO,EAAE,IAAI,EAAE,CAAC;gBACxB,MAAM,MAAM,GAAG,KAAK,CAAC,OAAO,CAAC,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,IAAI,CAAC,CAAC;gBAC1D,IAAI,CAAC,MAAM,CAAC,OAAO,EAAE,CAAC;oBACpB,MAAM,IAAI,gBAAQ,CAAC,GAAG,EAAE,YAAC,CAAC,YAAY,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC;gBACxD,CAAC;gBACD,OAAO,CAAC,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC;YAC7B,CAAC;YAED,QAAQ,GAAG,MAAM,KAAK,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;YAExC,uBAAuB;YACvB,IAAI,KAAK,CAAC,QAAQ,EAAE,IAAI,EAAE,CAAC;gBACzB,MAAM,MAAM,GAAG,KAAK,CAAC,QAAQ,CAAC,IAAI,CAAC,SAAS,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC;gBAC5D,IAAI,CAAC,MAAM,CAAC,OAAO,EAAE,CAAC;oBACpB,OAAO,CAAC,KAAK,CAAC,wBAAwB,EAAE,OAAO,CAAC,MAAM,EAAE,OAAO,CAAC,IAAI,EAAE,IAAI,CAAC,SAAS,CAAC,YAAC,CAAC,YAAY,CAAC,MAAM,CAAC,KAAK,CAAC,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;oBAC7H,QAAQ,GAAG,SAAS,CAAC,CAAC,iEAAiE;oBACvF,MAAM,IAAI,gBAAQ,CAAC,GAAG,EAAE,uBAAuB,CAAC,CAAC;gBACnD,CAAC;gBACD,QAAQ,CAAC,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC;YAC9B,CAAC;QACH,CAAC;aAAM,IAAI,QAAQ,EAAE,CAAC;YACpB,kBAAkB;YAClB,QAAQ,GAAG,MAAM,QAAQ,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;QAC7C,CAAC;aAAM,CAAC;YACN,MAAM,IAAI,gBAAQ,CAAC,GAAG,EAAE,WAAW,CAAC,CAAC;QACvC,CAAC;IACH,CAAC;IAAC,OAAO,CAAC,EAAE,CAAC;QACX,IAAI,YAAY,EAAE,CAAC;YACjB,IAAI,CAAC;gBACH,mFAAmF;gBACnF,QAAQ,GAAG,MAAM,YAAY,CAAC,OAAO,EAAE,CAAU,CAAC,CAAC;YACrD,CAAC;YAAC,OAAO,EAAE,EAAE,CAAC;gBACZ,QAAQ,GAAG,gBAAgB,CAAC,EAAE,CAAC,CAAC;YAClC,CAAC;QACH,CAAC;QAED,0BAA0B;QAC1B,QAAQ,GAAG,QAAQ,IAAI,gBAAgB,CAAC,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,wDAAwD;IACxD,IAAI,IAAwB,CAAC;IAC7B,MAAM,OAAO,GAAG,QAAQ,CAAC,OAAO,IAAI,EAAE,CAAC;IACvC,IAAI,OAAO,QAAQ,CAAC,IAAI,KAAK,QAAQ,EAAE,CAAC;QACtC,qBAAqB;QACrB,mDAAmD;QACnD,IAAI,CAAC,IAAA,mBAAS,EAAC,cAAc,EAAE,OAAO,CAAC;YAAE,IAAA,mBAAS,EAAC,cAAc,EAAE,YAAY,EAAE,OAAO,CAAC,CAAC;QAC1F,IAAI,GAAG,QAAQ,CAAC,IAAI,CAAC;IACvB,CAAC;SAAM,IAAI,QAAQ,CAAC,IAAI,EAAE,CAAC;QACzB,gCAAgC;QAChC,kDAAkD;QAClD,IAAI,GAAG,IAAI,CAAC,SAAS,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC;IACvC,CAAC;IAED,mBAAmB;IACnB,MAAM,MAAM,GAA0B;QACpC,UAAU,EAAE,QAAQ,CAAC,UAAU,IAAI,GAAG;QACtC,OAAO;QACP,IAAI,EAAE,IAAI,IAAI,EAAE;KACjB,CAAC;IAEF,qBAAqB;IACrB,MAAM,aAAa,GAAG,IAAA,qBAAW,EAAC,QAAQ,CAAC,CAAC;IAC5C,IAAI,aAAa,EAAE,CAAC;QAClB,MAAM,CAAC,iBAAiB,GAAG;YACzB,YAAY,EAAE,aAAa;SAC5B,CAAC;IACJ,CAAC;IAED,OAAO,MAAM,CAAC;AAChB,CAAC","sourcesContent":["import {\n  APIGatewayProxyEvent,\n  APIGatewayProxyResult,\n  Context,\n} from 'aws-lambda';\nimport {\n  Request, Response, Handler, Route, Routes,\n  ApiError,\n} from './types';\nimport { buildCookie, getHeader, matchRoute, parseRequest, setHeader } from './helpers';\nimport z from 'zod/v4';\n\nfunction apiErrorResponse(e?: unknown): Response {\n  // Intentional API error response\n  if (e instanceof ApiError) {\n    return {\n      statusCode: e.statusCode,\n      body: e.body,\n    };\n  }\n\n  // Unhandled error\n  if (e) console.error(e instanceof Error ? e.stack : e);\n  return {\n    statusCode: 500,\n    body: 'Internal server error',\n  };\n}\n\n/**\n * API route handler\n */\nexport async function apiHandler(\n  event: APIGatewayProxyEvent,\n  context: Context,\n  routes: Routes,\n  errorHandler: ((request: Request, e: Error) => Promise<Response | undefined>) | undefined = undefined,\n  catchAll: Handler | undefined = undefined,\n): Promise<APIGatewayProxyResult> {\n  const request = parseRequest(event);\n\n  let response: Response | undefined;\n  try {\n    const match = matchRoute(routes, request.path);\n    if (match.params) request.pathParameters = match.params;\n\n    if (match.methods) {\n      const route = match.methods[request.method as keyof Route];\n      if (!route) throw new ApiError(405, 'Method not allowed');\n\n      // Verify request body\n      if (route.request?.body) {\n        const parsed = route.request.body.safeParse(request.body);\n        if (!parsed.success) {\n          throw new ApiError(400, z.treeifyError(parsed.error));\n        }\n        request.body = parsed.data;\n      }\n\n      response = await route.handler(request);\n\n      // Verify response body\n      if (route.response?.body) {\n        const parsed = route.response.body.safeParse(response.body);\n        if (!parsed.success) {\n          console.error('Invalid response body:', request.method, request.path, JSON.stringify(z.treeifyError(parsed.error), null, 2));\n          response = undefined; // Remove the response so it can be replaced by the error handler\n          throw new ApiError(500, 'Internal server error');\n        }\n        response.body = parsed.data;\n      }\n    } else if (catchAll) {\n      // Catch-all / 404\n      response = await catchAll.handler(request);\n    } else {\n      throw new ApiError(404, 'Not found');\n    }\n  } catch (e) {\n    if (errorHandler) {\n      try {\n        // errorHandler can optionally return undefined to request standard error handling:\n        response = await errorHandler(request, e as Error);\n      } catch (ee) {\n        response = apiErrorResponse(ee);\n      }\n    }\n\n    // Standard error handling\n    response = response ?? apiErrorResponse(e);\n  }\n\n  // Translate the response to an API Gateway Proxy result\n  let body: string | undefined;\n  const headers = response.headers || {};\n  if (typeof response.body === 'string') {\n    // Use the body as-is\n    // Add text/plain if no Content-Type header is set:\n    if (!getHeader('Content-Type', headers)) setHeader('Content-Type', 'text/plain', headers);\n    body = response.body;\n  } else if (response.body) {\n    // Stringify the response object\n    // API Gateway returns application/json by default\n    body = JSON.stringify(response.body);\n  }\n\n  // Prepare response\n  const result: APIGatewayProxyResult = {\n    statusCode: response.statusCode ?? 200,\n    headers,\n    body: body || '',\n  };\n\n  // Add cookie headers\n  const cookieHeaders = buildCookie(response);\n  if (cookieHeaders) {\n    result.multiValueHeaders = {\n      'Set-Cookie': cookieHeaders,\n    };\n  }\n\n  return result;\n}\n"]}