@allan1361/iota-big3-sdk-middleware/dist/request-id-middleware.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createRequestIdMiddleware = createRequestIdMiddleware;
exports.fastifyRequestId = fastifyRequestId;
exports.getRequestId = getRequestId;
exports.correlateLogger = correlateLogger;
const uuid_1 = require("uuid");
const DEFAULT_CONFIG = {
    headerName: 'X-Request-ID',
    generator: () => (0, uuid_1.v4)(),
    trustProxy: false,
    attributeName: 'id'
};
function createRequestIdMiddleware(config = {}) {
    const options = { ...DEFAULT_CONFIG, ...config };
    return function requestIdMiddleware(req, res, next) {
        let requestId = options.trustProxy && req.headers[options.headerName.toLowerCase()]
            ? String(req.headers[options.headerName.toLowerCase()])
            : options.generator();
        if (options.trustProxy && req.headers[options.headerName.toLowerCase()]) {
            const providedId = String(req.headers[options.headerName.toLowerCase()]);
            if (!/^[\w-]{8,128}$/.test(providedId)) {
                requestId = options.generator();
            }
        }
        req[options.attributeName] = requestId;
        const correlationHeader = req.headers['x-correlation-id'];
        if (correlationHeader) {
            req.correlationId = String(correlationHeader);
        }
        res.setHeader(options.headerName, requestId);
        res.locals = res.locals || {};
        res.locals.requestId = requestId;
        next();
    };
}
async function fastifyRequestId(fastify, options = {}) {
    const config = { ...DEFAULT_CONFIG, ...options };
    fastify.decorateRequest('id', '');
    fastify.decorateRequest('correlationId', '');
    fastify.addHook('onRequest', async (request, reply) => {
        let requestId = config.trustProxy && request.headers[config.headerName.toLowerCase()]
            ? String(request.headers[config.headerName.toLowerCase()])
            : config.generator();
        if (config.trustProxy && request.headers[config.headerName.toLowerCase()]) {
            const providedId = String(request.headers[config.headerName.toLowerCase()]);
            if (!/^[\w-]{8,128}$/.test(providedId)) {
                requestId = config.generator();
            }
        }
        request[config.attributeName] = requestId;
        const correlationHeader = request.headers[config.correlationHeader.toLowerCase()];
        if (correlationHeader) {
            request.correlationId = String(correlationHeader);
        }
        reply.header(config.headerName, requestId);
    });
}
function getRequestId(req, options = {}) {
    return req[options.attributeName] || options.generator();
}
function correlateLogger(logger, req, options = {}) {
    const requestId = getRequestId(req, options);
    const correlationId = req.correlationId;
    return logger.child({
        requestId,
        ...(correlationId && { correlationId })
    });
}
exports.default = createRequestIdMiddleware;
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