@geek-fun/serverless-adapter/dist/src/context.js

Adapter for web frame work express, koa, springboot to run in serverless function as backend of apigateway cross multi cloud provider like aliyun, huawei

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.constructFrameworkContext = void 0;
const serverlessRequest_1 = __importDefault(require("./serverlessRequest"));
const node_url_1 = __importDefault(require("node:url"));
const common_1 = require("./common");
// const requestRemoteAddress = (event) => {
//   if (event.version === '2.0') {
//     return event.requestContext.http.sourceIp;
//   }
//   return event.requestContext.identity.sourceIp;
// };
const requestBody = (event) => {
    if (!event.body) {
        return undefined;
    }
    const type = typeof event.body;
    if (Buffer.isBuffer(event.body)) {
        return event.body;
    }
    else if (type === 'string') {
        return Buffer.from(event.body, event.isBase64Encoded ? 'base64' : 'utf8');
    }
    else if (type === 'object') {
        return Buffer.from(JSON.stringify(event.body));
    }
    throw new Error(`Unexpected event.body type: ${typeof event.body}`);
};
const requestHeaders = (event) => {
    const initialHeader = {};
    // if (event.multiValueHeaders) {
    //   Object.keys(event.multiValueHeaders).reduce((headers, key) => {
    //     headers[key.toLowerCase()] = event.multiValueHeaders[key].join(', ');
    //     return headers;
    //   }, initialHeader);
    // }
    return Object.keys(event.headers ?? {}).reduce((headers, key) => {
        headers[key.toLowerCase()] = event.headers[key];
        return headers;
    }, initialHeader);
};
const constructFrameworkContext = (rawEvent, rawContext) => {
    (0, common_1.debug)(`constructFrameworkContext: ${JSON.stringify({ rawEvent, rawContext })}`);
    const event = JSON.parse(Buffer.from(rawEvent).toString());
    const body = requestBody(event);
    const headers = requestHeaders(event);
    const request = new serverlessRequest_1.default({
        method: event.httpMethod,
        path: event.path,
        headers,
        body,
        remoteAddress: '',
        url: node_url_1.default.format({
            pathname: event.path,
            query: event.queryParameters,
        }),
        isBase64Encoded: event.isBase64Encoded,
    });
    return { request };
};
exports.constructFrameworkContext = constructFrameworkContext;