cassava/dist/routes/LoggingRoute.js

AWS API Gateway Router

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.LoggingRoute = void 0;
/**
 * Logs all requests and responses.
 */
class LoggingRoute {
    constructor(options = {}) {
        this.options = options;
    }
    matches(evt) {
        return true;
    }
    handle(evt) {
        const msg = this.requestToString(evt);
        this.log(msg);
    }
    postProcess(evt, resp) {
        const msg = `${this.requestToString(evt)} ${this.responseToString(resp)}`;
        this.log(msg);
    }
    requestToString(evt) {
        let msg = `${evt.httpMethod} ${evt.path}${this.queryMapToString(evt.multiValueQueryStringParameters || evt.queryStringParameters)}`;
        if (!this.options.hideRequestBody && evt.body != null) {
            msg += ` reqbody=${JSON.stringify(evt.body)}`;
        }
        if (this.options.logRequestHeaders) {
            msg += ` reqheaders={${this.headersToString(evt.multiValueHeaders || evt.headers, this.options.logRequestHeaders)}}`;
        }
        return msg;
    }
    responseToString(resp) {
        let msg = `status=${resp.statusCode || 200}`;
        if (!this.options.hideResponseBody) {
            msg += ` respbody=${JSON.stringify(resp.body)}`;
        }
        if (this.options.logResponseHeaders) {
            msg += ` respheaders={${this.headersToString(resp.headers, this.options.logResponseHeaders)}}`;
        }
        return msg;
    }
    queryMapToString(queryStringParameters) {
        if (!queryStringParameters) {
            return "";
        }
        const keys = Object.keys(queryStringParameters);
        if (!keys.length) {
            return "";
        }
        return "?" + keys.map(key => {
            const value = queryStringParameters[key];
            if (Array.isArray(value)) {
                return value.map(value => `${encodeURIComponent(key)}=${encodeURIComponent(value)}`).join("&");
            }
            return `${encodeURIComponent(key)}=${encodeURIComponent(value)}`;
        }).join("&");
    }
    headersToString(headers, headersFilter) {
        let keys = Object.keys(headers);
        if (Array.isArray(headersFilter)) {
            const filterLowerCase = headersFilter.map(h => h.toLowerCase());
            keys = keys.filter(key => filterLowerCase ? filterLowerCase.indexOf(key.toLowerCase()) !== -1 : true);
        }
        return keys.map(key => {
            const value = headers[key];
            if (Array.isArray(value)) {
                return value.map(value => `${key}=${value}`).join(", ");
            }
            return `${key}=${value}`;
        }).join(", ");
    }
    log(msg) {
        if (this.options.logFunction) {
            this.options.logFunction(msg);
        }
        else {
            console.log(msg);
        }
    }
}
exports.LoggingRoute = LoggingRoute;
//# sourceMappingURL=LoggingRoute.js.map