valory-adaptor-fastify/dist/adaptor-fastify.js

Fastify adaptor for valory

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const valory_runtime_1 = require("valory-runtime");
const fastify = require("fastify");
const querystring_1 = require("querystring");
const pathReplacer = /{([\S]*?)}/g;
class FastifyAdaptor {
    constructor() {
        this.locallyRunnable = true;
        this.allowDocSite = true;
        this.instance = fastify({});
        this.instance.addContentTypeParser("application/x-www-form-urlencoded", { parseAs: "string" }, formParser);
        this.instance.addContentTypeParser("application/json", { parseAs: "string" }, jsonParser);
    }
    register(path, method, handler) {
        const route = `${path}:${valory_runtime_1.HttpMethod[method]}`;
        path = path.replace(pathReplacer, ":$1");
        this.instance.route({
            method: valory_runtime_1.HttpMethod[method],
            url: path,
            handler: (req, res) => {
                // FIXME: setting both formData and body is lazy, need a better solution
                const transRequest = new valory_runtime_1.ApiRequest({
                    headers: req.req.headers,
                    body: null,
                    rawBody: null,
                    formData: req.body,
                    query: req.query,
                    path: req.params,
                    route,
                });
                const contentType = req.req.headers["content-type"];
                if (contentType != null && contentType.indexOf("application/json") !== -1 && req.body != null) {
                    transRequest.body = req.body.parsed;
                    transRequest.rawBody = req.body.raw;
                }
                else {
                    transRequest.body = req.body;
                }
                return handler(transRequest).then((response) => {
                    if (response.headers["Content-Type"] === "application/json" && typeof response.body === "string") {
                        res.serializer(noopSerializer);
                    }
                    res.code(response.statusCode);
                    res.headers(response.headers);
                    res.send(response.body);
                });
            },
        });
    }
    getExport(metadata, options) {
        this.instance.listen(options.port || process.env.PORT, options.host || process.env.HOST);
        return { valory: metadata };
    }
    shutdown() {
        this.instance.server.close();
    }
}
exports.FastifyAdaptor = FastifyAdaptor;
function noopSerializer(data) {
    return data;
}
function jsonParser(req, body, done) {
    let json = null;
    try {
        json = JSON.parse(body);
    }
    catch (err) {
        err.statusCode = 400;
        return done(err, undefined);
    }
    done(null, { parsed: json, raw: body });
}
function formParser(req, body, done) {
    done(null, querystring_1.parse(body));
}
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