rest-fetcher
Version:
REST API Fetcher module.
229 lines (228 loc) • 11.5 kB
JavaScript
"use strict";
var __assign = (this && this.__assign) || Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
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) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
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;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [0, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var _ = require("lodash");
var lfetch;
// if not running on a browser - use isomorphic-fetch
if (typeof window === "undefined") {
lfetch = require("isomorphic-fetch");
}
else {
lfetch = fetch;
}
var UNAUTHORIZED_ERR_CODE = 401;
var DEFAULT_TIMEOUT = 60000;
var Fetcher = /** @class */ (function () {
function Fetcher(config) {
var baseUrl = config.baseUrl, defaultTimeout = config.defaultTimeout, credentialsMode = config.credentialsMode, defaultHeaders = config.defaultHeaders;
this.baseUrl = baseUrl;
this.defaultTimeout = defaultTimeout || DEFAULT_TIMEOUT;
this.defaultHeaders = defaultHeaders;
this.credentialsMode = credentialsMode;
}
/**
* Send GET REST API call
* @param apiEndpoint
* @param params
* @param timeout
*/
Fetcher.prototype.get = function (apiEndpoint, params, timeout, headers) {
if (timeout === void 0) { timeout = this.defaultTimeout; }
var paramsString = _.map(params, function (value, key) {
return key + "=" + encodeURIComponent(value);
}).join("&");
var endpoint = "" + this.baseUrl + apiEndpoint + (paramsString ? "?" + paramsString : "");
var requestObj = !headers && !this.defaultHeaders ? undefined : {
method: "GET",
headers: !!this.defaultHeaders ? __assign({}, this.defaultHeaders, (headers || {})) : headers
};
return this.doRequest(endpoint, requestObj, timeout);
};
/**
* Send POST REST API call
* @param apiEndpoint
* @param params
* @param timeout
*/
Fetcher.prototype.post = function (apiEndpoint, params, timeout, headers) {
if (timeout === void 0) { timeout = this.defaultTimeout; }
return this.callRestMethod(apiEndpoint, "POST", timeout, params, headers);
};
/**
* Send PUT REST API call
* @param apiEndpoint
* @param params
* @param timeout
*/
Fetcher.prototype.put = function (apiEndpoint, params, timeout, headers) {
if (timeout === void 0) { timeout = this.defaultTimeout; }
return this.callRestMethod(apiEndpoint, "PUT", timeout, params, headers);
};
/**
* Send PATCH REST API call
* @param apiEndpoint
* @param params
* @param timeout
*/
Fetcher.prototype.pathc = function (apiEndpoint, params, timeout, headers) {
if (timeout === void 0) { timeout = this.defaultTimeout; }
return this.callRestMethod(apiEndpoint, "PATCH", timeout, params, headers);
};
/**
* Send DELETE REST API call
* @param apiEndpoint
* @param params
* @param timeout
*/
Fetcher.prototype.delete = function (apiEndpoint, params, timeout, headers) {
if (timeout === void 0) { timeout = this.defaultTimeout; }
this.callRestMethod(apiEndpoint, "DELETE", timeout, params, headers);
};
Fetcher.prototype.doRequest = function (apiEndpoint, requestObj, timeout, headers) {
if (timeout === void 0) { timeout = this.defaultTimeout; }
return __awaiter(this, void 0, void 0, function () {
var _this = this;
var timeoutObj_1, handelResponse, options, response, responseObject, err_1, errMessage;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 3, , 4]);
timeoutObj_1 = setTimeout(function () { throw new Error("Request timed out."); }, timeout);
handelResponse = function (response) { return __awaiter(_this, void 0, void 0, function () {
var _this = this;
var contentType, errMsg, err;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
clearTimeout(timeoutObj_1);
if (!response.ok) return [3 /*break*/, 6];
contentType = response.headers.get("Content-Type");
if (!(contentType && contentType === "application/force-download")) return [3 /*break*/, 1];
return [2 /*return*/, response.blob().then(function (blob) {
_this.saveBlobToFile(blob);
return;
})];
case 1:
if (!(contentType && contentType.indexOf("application/json") > -1)) return [3 /*break*/, 3];
return [4 /*yield*/, response.json()];
case 2: return [2 /*return*/, _a.sent()];
case 3: return [4 /*yield*/, response.text()];
case 4: return [2 /*return*/, _a.sent()];
case 5: return [3 /*break*/, 8];
case 6: return [4 /*yield*/, response.text()];
case 7:
errMsg = _a.sent();
err = new Error(errMsg);
if (response.status === UNAUTHORIZED_ERR_CODE) {
err["code"] = UNAUTHORIZED_ERR_CODE;
}
throw err;
case 8: return [2 /*return*/];
}
});
}); };
options = void 0;
if (!!this.credentialsMode)
options = __assign({}, requestObj, { credentials: this.credentialsMode });
else
options = requestObj;
return [4 /*yield*/, lfetch(apiEndpoint, options)];
case 1:
response = _a.sent();
return [4 /*yield*/, handelResponse(response)];
case 2:
responseObject = _a.sent();
return [2 /*return*/, responseObject];
case 3:
err_1 = _a.sent();
errMessage = (err_1.error && err_1.error.message ? err_1.error.message : err_1).toString();
errMessage = this.normalizeError(errMessage);
console.error("Error in " + apiEndpoint + " API:", errMessage, err_1);
throw new Error(errMessage);
case 4: return [2 /*return*/];
}
});
});
};
Fetcher.prototype.callRestMethod = function (apiEndpoint, method, timeout, params, headers) {
var endpoint = this.baseUrl + apiEndpoint;
var requestObj = {
method: method,
body: JSON.stringify(params),
headers: !!this.defaultHeaders ? __assign({}, this.defaultHeaders, (headers || {})) : headers
};
if (!!headers) {
requestObj.headers = !!this.defaultHeaders ? __assign({}, this.defaultHeaders, this.defaultHeaders, headers) : __assign({}, requestObj.headers, headers);
}
// console.debug(endpoint, requestObj);
return this.doRequest(endpoint, requestObj, timeout);
};
Fetcher.prototype.saveBlobToFile = function (blob) {
var url = window.URL.createObjectURL(blob);
var a = document.createElement("a");
a.style.display = "none";
a.href = url;
a.download = "";
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
// On Edge, revokeObjectURL should be called only after a.click() has completed, at least on EdgeHTML 15.15048:
setTimeout(function () {
window.URL.revokeObjectURL(url);
}, 1000);
};
// Remove default 'Error:' prefix.
Fetcher.prototype.normalizeError = function (errMessage) {
if (errMessage.startsWith("Error:")) {
errMessage = errMessage.substr(7);
return this.normalizeError(errMessage);
}
else {
return errMessage;
}
};
return Fetcher;
}());
exports.Fetcher = Fetcher;