caccl-send-request
Version:
The default request sender used throughout the CACCL project.
222 lines • 10.8 kB
JavaScript
;
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var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
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var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
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Object.defineProperty(exports, "__esModule", { value: true });
// Import libs
var qs_1 = __importDefault(require("qs"));
// Import other CACCL libs
var caccl_error_1 = __importDefault(require("caccl-error"));
// Import shared types
var ErrorCode_1 = __importDefault(require("./types/ErrorCode"));
/**
* Sends and retries an http request
* @author Gabriel Abrams
* @author Yuen Ler Chow
* @param opts object containing all arguments
* @param opts.path path to send request to
* @param [opts.host] host to send request to
* @param [opts.method=GET] http method to use
* @param [opts.params] body/data to include in the request
* @param [opts.headers] headers to include in the request
* @param [opts.numRetries=0] number of times to retry the request if it
* fails
* @param [opts.sendCrossDomainCredentials=true if in development mode] if true,
* send cross-domain credentials even if not in dev mode
* @param [opts.responseType=JSON] expected response type
* @returns { body, status, headers } on success
*/
var sendRequest = function (opts) { return __awaiter(void 0, void 0, void 0, function () {
var thisIsDev, sendCrossDomainCredentials, numRetries, method, params, stringifiedParams, query, url, headers, data, encodedData, response, responseHeaders_1, status_1, responseBody, err_1, err_2;
var _a;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
thisIsDev = (opts.host === 'localhost:8080');
sendCrossDomainCredentials = !!(opts.sendCrossDomainCredentials
|| thisIsDev
|| ((_a = opts.headers) === null || _a === void 0 ? void 0 : _a.credentials) === 'include');
numRetries = (opts.numRetries ? opts.numRetries : 0);
method = (opts.method || 'GET');
if (opts.params) {
params = {};
Object.entries(opts.params).forEach(function (_a) {
var key = _a[0], val = _a[1];
if (typeof val === 'object' && !Array.isArray(val)) {
params[key] = JSON.stringify(val);
}
else {
params[key] = val;
}
});
}
stringifiedParams = qs_1.default.stringify(params || {}, {
encodeValuesOnly: true,
arrayFormat: 'brackets',
});
query = (method === 'GET' ? "?".concat(stringifiedParams) : '');
if (!opts.host) {
// No host included at all. Just send to a path
url = "".concat(opts.path).concat(query);
}
else {
url = "https://".concat(opts.host).concat(opts.path).concat(query);
}
headers = opts.headers || {};
data = null;
if (!headers['Content-Type']) {
// Form encoded
headers['Content-Type'] = 'application/x-www-form-urlencoded';
// Add data if applicable
data = (method !== 'GET' ? stringifiedParams : null);
}
else {
// JSON encode
data = params;
}
if (data) {
if (headers['Content-Type'] === 'application/x-www-form-urlencoded') {
encodedData = new URLSearchParams(params);
}
else {
encodedData = JSON.stringify(data);
}
}
_b.label = 1;
case 1:
_b.trys.push([1, 11, , 12]);
return [4 /*yield*/, fetch(url, {
method: method,
mode: 'cors',
headers: headers !== null && headers !== void 0 ? headers : {},
body: ((method !== 'GET' && encodedData)
? encodedData
: undefined),
credentials: (sendCrossDomainCredentials
? 'include'
: 'same-origin'),
redirect: 'follow',
referrerPolicy: (sendCrossDomainCredentials ? 'origin' : undefined),
})];
case 2:
response = _b.sent();
responseHeaders_1 = {};
response.headers.forEach(function (value, key) {
responseHeaders_1[key] = value;
});
status_1 = response.status;
_b.label = 3;
case 3:
_b.trys.push([3, 9, , 10]);
responseBody = void 0;
if (!(status_1 === 204)) return [3 /*break*/, 4];
// No content
if (opts.responseType
&& opts.responseType === 'Text') {
// Response type is text
responseBody = '';
}
else {
// Response type is JSON
responseBody = {};
}
return [3 /*break*/, 8];
case 4:
if (!(opts.responseType
&& opts.responseType === 'Text')) return [3 /*break*/, 6];
return [4 /*yield*/, response.text()];
case 5:
// Response type is text
responseBody = _b.sent();
return [3 /*break*/, 8];
case 6: return [4 /*yield*/, response.json()];
case 7:
// Response type is JSON
responseBody = _b.sent();
_b.label = 8;
case 8:
// Return response
return [2 /*return*/, {
body: responseBody,
status: status_1,
headers: responseHeaders_1,
}];
case 9:
err_1 = _b.sent();
throw new caccl_error_1.default({
message: "Failed to parse response as ".concat(opts.responseType, ": ").concat(err_1 === null || err_1 === void 0 ? void 0 : err_1.message),
code: ErrorCode_1.default.ResponseParseError,
});
case 10: return [3 /*break*/, 12];
case 11:
err_2 = _b.sent();
// Request failed! Check if we have more attempts
if (numRetries > 0) {
// Update opts with one less retry
return [2 /*return*/, sendRequest(__assign(__assign({}, opts), { numRetries: opts.numRetries - 1 }))];
}
// Self-signed certificate error:
if (err_2.message.includes('self signed certificate')) {
throw new caccl_error_1.default({
message: 'We refused to send a request because the receiver has self-signed certificates.',
code: ErrorCode_1.default.SelfSigned,
});
}
// No tries left
throw new caccl_error_1.default({
message: "We encountered an error when trying to send a network request. If this issue persists, contact an admin. Error: ".concat(err_2 === null || err_2 === void 0 ? void 0 : err_2.message),
code: ErrorCode_1.default.NotConnected,
});
case 12: return [2 /*return*/];
}
});
}); };
exports.default = sendRequest;
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