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website/functions/node_modules/gcp-metadata/build/src/index.js

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+"use strict";
+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 axios_1 = require("axios");
+var extend = require("extend");
+var rax = require("retry-axios");
+exports.HOST_ADDRESS = 'http://metadata.google.internal';
+exports.BASE_PATH = '/computeMetadata/v1';
+exports.BASE_URL = exports.HOST_ADDRESS + exports.BASE_PATH;
+exports.HEADER_NAME = 'Metadata-Flavor';
+exports.HEADER_VALUE = 'Google';
+exports.HEADERS = Object.freeze((_a = {}, _a[exports.HEADER_NAME] = exports.HEADER_VALUE, _a));
+// Accepts an options object passed from the user to the API.  In the
+// previous version of the API, it referred to a `Request` options object.
+// Now it refers to an Axios Request Config object.  This is here to help
+// ensure users don't pass invalid options when they upgrade from 0.4 to 0.5.
+function validate(options) {
+    var vpairs = [
+        { invalid: 'uri', expected: 'url' }, { invalid: 'json', expected: 'data' },
+        { invalid: 'qs', expected: 'params' }
+    ];
+    for (var _i = 0, vpairs_1 = vpairs; _i < vpairs_1.length; _i++) {
+        var pair = vpairs_1[_i];
+        if (options[pair.invalid]) {
+            var e = "'" + pair.invalid + "' is not a valid configuration option. Please use '" + pair.expected + "' instead. This library is using Axios for requests. Please see https://github.com/axios/axios to learn more about the valid request options.";
+            throw new Error(e);
+        }
+    }
+}
+function metadataAccessor(type, options, noResponseRetries) {
+    if (noResponseRetries === void 0) { noResponseRetries = 3; }
+    return __awaiter(this, void 0, void 0, function () {
+        var property, ax, baseOpts, reqOpts;
+        return __generator(this, function (_a) {
+            options = options || {};
+            if (typeof options === 'string') {
+                options = { property: options };
+            }
+            property = '';
+            if (typeof options === 'object' && options.property) {
+                property = '/' + options.property;
+            }
+            validate(options);
+            ax = axios_1.default.create();
+            rax.attach(ax);
+            baseOpts = {
+                url: exports.BASE_URL + "/" + type + property,
+                headers: Object.assign({}, exports.HEADERS),
+                raxConfig: { noResponseRetries: noResponseRetries, instance: ax }
+            };
+            reqOpts = extend(true, baseOpts, options);
+            delete reqOpts.property;
+            return [2 /*return*/, ax.request(reqOpts)
+                    .then(function (res) {
+                    // NOTE: node.js converts all incoming headers to lower case.
+                    if (res.headers[exports.HEADER_NAME.toLowerCase()] !== exports.HEADER_VALUE) {
+                        throw new Error("Invalid response from metadata service: incorrect " + exports.HEADER_NAME + " header.");
+                    }
+                    else if (!res.data) {
+                        throw new Error('Invalid response from the metadata service');
+                    }
+                    return res;
+                })
+                    .catch(function (err) {
+                    if (err.response && err.response.status !== 200) {
+                        err.message = 'Unsuccessful response status code. ' + err.message;
+                    }
+                    throw err;
+                })];
+        });
+    });
+}
+function instance(options) {
+    return metadataAccessor('instance', options);
+}
+exports.instance = instance;
+function project(options) {
+    return metadataAccessor('project', options);
+}
+exports.project = project;
+/**
+ * Determine if the metadata server is currently available.
+ */
+function isAvailable() {
+    return __awaiter(this, void 0, void 0, function () {
+        var err_1;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    _a.trys.push([0, 2, , 3]);
+                    // Attempt to read instance metadata. As configured, this will
+                    // retry 3 times if there is a valid response, and fail fast
+                    // if there is an ETIMEDOUT or ENOTFOUND error.
+                    return [4 /*yield*/, metadataAccessor('instance', undefined, 0)];
+                case 1:
+                    // Attempt to read instance metadata. As configured, this will
+                    // retry 3 times if there is a valid response, and fail fast
+                    // if there is an ETIMEDOUT or ENOTFOUND error.
+                    _a.sent();
+                    return [2 /*return*/, true];
+                case 2:
+                    err_1 = _a.sent();
+                    return [2 /*return*/, false];
+                case 3: return [2 /*return*/];
+            }
+        });
+    });
+}
+exports.isAvailable = isAvailable;
+var _a;
+//# sourceMappingURL=index.js.map