will-api
Version:
Web API gateway adapter for moleculer
130 lines (129 loc) • 6.16 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.KnGateWay = void 0;
const moleculer_web_1 = __importDefault(require("moleculer-web"));
const JSONReply_1 = require("./JSONReply");
const will_util_1 = __importDefault(require("will-util"));
const REPLY_HEADER_INFO = will_util_1.default.env("REPLY_HEADER_INFO", "false") === "true";
class KnGateWay {
constructor(name) {
this.name = "api";
this.mixins = [moleculer_web_1.default];
this.settings = {
port: will_util_1.default.env("GATEWAY_PORT", "8080") || 8080,
path: "/api",
mappingPolicy: "all",
cors: true,
routes: [{
mappingPolicy: "all",
bodyParsers: {
json: true,
urlencoded: { extended: true }
},
onBeforeCall: (ctx, route, req, res, alias) => {
ctx.meta.userAgent = req.headers["user-agent"];
ctx.meta.session = req.session;
ctx.meta.headers = req.headers;
ctx.meta.$headers = {};
let logger = req.$service.logger;
logger.debug("headers", req.headers);
},
onAfterCall: (ctx, route, req, res, data) => {
let responseRaw = false;
let responseType = null;
if (ctx.meta.$headers) {
for (let p in ctx.meta.$headers) {
res.setHeader(p, ctx.meta.$headers[p]);
}
}
if (req.$action) {
if (req.$action.responseType) {
responseType = req.$action.responseType;
}
if (typeof req.$action.responseRaw !== "undefined") {
responseRaw = req.$action.responseRaw;
}
}
if (ctx.meta.$responseType) {
responseType = ctx.meta.$responseType;
}
if (typeof ctx.meta.$responseRaw !== "undefined") {
responseRaw = ctx.meta.$responseRaw;
}
if (responseType) {
responseType = responseType.toLowerCase();
let idx = responseType.indexOf("text/plain");
if (idx >= 0)
return data;
idx = responseType.indexOf("text/html");
if (idx >= 0)
return data;
}
if (data instanceof JSONReply_1.JSONReply) {
return data;
}
else {
if (responseRaw) {
if (data instanceof Map) {
return Object.fromEntries(data);
}
else if (data instanceof Set) {
return Array.from(data);
}
return data;
}
let reply = new JSONReply_1.JSONReply();
reply.head.modeling(req.$service.name, req.$action.name);
reply.head.composeNoError();
if (REPLY_HEADER_INFO) {
reply.head.info = { id: ctx.id, nodeID: ctx.nodeID, requestID: ctx.requestID };
}
if (typeof data === "string") {
reply.body = { data: data };
}
else {
if (data instanceof Map) {
reply.body = Object.fromEntries(data);
}
else if (data instanceof Set) {
reply.body = Array.from(data);
}
else {
reply.body = data;
}
}
return reply;
}
}
}],
onError(req, res, err) {
let metname = req.$action?.name;
if (!metname)
metname = err.data?.name;
let errcode = err.code ? err.code : 500;
let errno = err.errno ? err.errno : errcode;
if (errcode <= 0 || errcode >= 1024)
errcode = 406; //not acceptable
let reply = new JSONReply_1.JSONReply();
reply.head.modeling(req.$service?.name, metname);
reply.head.composeError(String(errno), err.message);
reply.head.details = err;
if (REPLY_HEADER_INFO) {
let ctx = req.$ctx;
if (ctx) {
reply.head.info = { id: ctx.id, nodeID: ctx.nodeID, requestID: ctx.requestID };
}
}
res.setHeader("Content-Type", "application/json; charset=utf-8");
res.writeHead(Number(errcode));
res.end(JSON.stringify(reply));
},
};
if (name)
this.name = name;
}
}
exports.KnGateWay = KnGateWay;