api_twins_server
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293 lines • 13.1 kB
JavaScript
;
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
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s = arguments[i];
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}
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};
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
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var __generator = (this && this.__generator) || function (thisArg, body) {
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function verb(n) { return function (v) { return step([n, v]); }; }
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var __read = (this && this.__read) || function (o, n) {
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var i = m.call(o), r, ar = [], e;
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}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
if (ar || !(i in from)) {
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
ar[i] = from[i];
}
}
return to.concat(ar || Array.prototype.slice.call(from));
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.twinsMiddleware = void 0;
var fs_1 = require("fs");
var path_1 = require("path");
var url_1 = require("url");
var path_to_regexp_1 = __importDefault(require("path-to-regexp"));
var pino_1 = __importDefault(require("pino"));
var logger = (0, pino_1.default)();
function twinsMiddleware(twinsDir) {
return __awaiter(this, void 0, void 0, function () {
var defs;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, loadTwins(twinsDir)];
case 1:
defs = _a.sent();
return [2 /*return*/, function (req, res, next) {
var story = getStory(req);
var params = {
url: (0, url_1.parse)(req.url).pathname || '/',
method: req.method,
body: req.body,
query: req.query,
};
var found = findTwin(defs, __assign(__assign({}, params), story)) || findTwin(defs, __assign(__assign({}, params), { story: '_default', storyPath: undefined })) || findTwin(defs, __assign(__assign({}, params), { story: '_manual', storyPath: undefined }));
if (!found) {
logger.error(__assign(__assign(__assign({}, story), params), { msg: 'Not found' }));
return next();
}
found.sort(compareWeights);
var top = found[0];
Object.keys(top.replyHeaders)
.forEach(function (key) { return res.set(key, top.replyHeaders[key]); });
var status = top.status || 200;
logger.info({
story: top.story,
storyPath: top.storyPath,
file: top.file,
url: params.url,
status: status,
});
res.status(status);
res.send(top.reply);
}];
}
});
});
}
exports.twinsMiddleware = twinsMiddleware;
function compareWeights(a, b) {
var keysA = countKeys(a.query) + countKeys(a.body);
var keysB = countKeys(b.query) + countKeys(b.body);
if (keysA > keysB) {
return -1;
}
if (keysA < keysB) {
return 1;
}
return 0;
}
function countKeys(data) {
if (data === null) {
return 1;
}
if (typeof data === 'object' && data instanceof Array) {
return data.length +
data.reduce(function (sum, item) { return sum + countKeys(item); }, 0);
}
if (typeof data === 'object') {
return Object.keys(data).length +
Object.values(data).reduce(function (sum, item) { return sum + countKeys(item); }, 0);
}
return 1;
}
var storyPathRe = /^\[([^)]+)\]/;
function getStoryPath(name) {
var storyPathMatch = storyPathRe.exec(name);
if (storyPathMatch) {
return storyPathMatch[1];
}
}
function parseContent(content) {
return __awaiter(this, void 0, void 0, function () {
var parsed, _a;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
parsed = JSON.parse(content);
if (!parsed.method) {
parsed.method = 'GET';
}
if (!parsed.status) {
parsed.status = 200;
}
if (!parsed.reply) {
parsed.reply = '';
}
if (!parsed.replyFile) return [3 /*break*/, 2];
_a = parsed;
return [4 /*yield*/, fs_1.promises.readFile(parsed.replyFile)];
case 1:
_a.reply = _b.sent();
_b.label = 2;
case 2:
if (!parsed.query) {
parsed.query = {};
}
if (!parsed.body) {
parsed.body = {};
}
if (!parsed.replyHeaders) {
parsed.replyHeaders = {};
}
parsed.urlRegex = (0, path_to_regexp_1.default)(parsed.url);
return [2 /*return*/, parsed];
}
});
});
}
function loadTwins(dir) {
return __awaiter(this, void 0, void 0, function () {
var all, dirs, dirsFiles, flat, withFiles;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, fs_1.promises.readdir(dir, { withFileTypes: true })];
case 1:
all = _a.sent();
dirs = all.filter(function (dirent) { return dirent.isDirectory(); });
return [4 /*yield*/, Promise.all(dirs.map(function (curr) {
return fs_1.promises.readdir((0, path_1.join)(dir, curr.name));
}))];
case 2:
dirsFiles = _a.sent();
flat = dirs.reduce(function (sum, curr, idx) {
var story = curr.name;
return __spreadArray(__spreadArray([], __read(sum), false), __read(dirsFiles[idx].map(function (file) { return ({ story: story, file: file, storyPath: getStoryPath(file) }); })), false);
}, []);
return [4 /*yield*/, Promise.all(flat.map(function (cur) { return __awaiter(_this, void 0, void 0, function () {
var content, _a, err_1;
return __generator(this, function (_b) {
switch (_b.label) {
case 0: return [4 /*yield*/, fs_1.promises.readFile((0, path_1.join)(dir, cur.story, cur.file), 'utf8')];
case 1:
content = _b.sent();
logger.info({ story: cur.story, loaded: cur.file });
_b.label = 2;
case 2:
_b.trys.push([2, 4, , 5]);
_a = [__assign({}, cur)];
return [4 /*yield*/, parseContent(content)];
case 3: return [2 /*return*/, __assign.apply(void 0, _a.concat([_b.sent()]))];
case 4:
err_1 = _b.sent();
logger.error({
error: err_1.message,
story: cur.story,
file: cur.file,
});
process.exit(-1);
return [3 /*break*/, 5];
case 5: return [2 /*return*/];
}
});
}); }))];
case 3:
withFiles = _a.sent();
return [2 /*return*/, withFiles];
}
});
});
}
function findTwin(list, search) {
var found = list.filter(function (item) {
return (item.urlRegex.exec(search.url) &&
search.method === item.method &&
search.story === item.story &&
search.storyPath === item.storyPath &&
match(search.body, item.body) &&
match(search.query, item.query));
});
return found.length ? found : false;
}
var TwinsCookieOrQuery = 'api_twin';
var TwinsHeader = 'x-api-twin';
function getStory(req) {
var cookie = req.cookies[TwinsCookieOrQuery];
var query = req.query[TwinsCookieOrQuery];
var header = req.get(TwinsHeader);
var twin = header || query || cookie;
if (!twin) {
return {
story: undefined,
storyPath: undefined,
uuid: undefined,
};
}
var _a = __read(twin.split(':'), 3), story = _a[0], storyPath = _a[1], uuid = _a[2];
return {
story: story,
storyPath: storyPath,
uuid: uuid,
};
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function match(check, sample) {
if (typeof check !== typeof sample) {
return false;
}
if (typeof sample === 'object' && sample) {
return !Object.keys(sample).some(function (key) {
return !match(check[key], sample[key]);
});
}
return check === sample;
}
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