ssm-parameter-store
Version:
λ✨Ergonomic SSM Parameter Store wrapper for AWS Lambda designed with ease-of-use in mind, with built-in caching and idempotent preloading, TypeScript compile time checks, and handy autocompletion.
245 lines • 16.6 kB
JavaScript
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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) : adopt(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 (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, 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 };
}
};
var __values = (this && this.__values) || function(o) {
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
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 client_ssm_1 = require("@aws-sdk/client-ssm");
function chunk(array, chunkSize) {
var arrays = [];
var currentChunk = 0;
array.forEach(function (value) {
if (!arrays[currentChunk]) {
arrays[currentChunk] = [value];
}
else {
arrays[currentChunk].push(value);
}
if (arrays[currentChunk].length === chunkSize) {
currentChunk += 1;
}
});
return arrays;
}
var SSMParameterStore = /** @class */ (function () {
function SSMParameterStore(ssm, parameterNamesToKeys) {
var e_1, _a;
this.parameterNamesToKeys = {};
this.parameterKeysToValues = {};
this.keyLoaded = {};
this.ssm = ssm;
this.parameterNamesToKeys = parameterNamesToKeys;
try {
for (var _b = __values(Object.values(parameterNamesToKeys)), _c = _b.next(); !_c.done; _c = _b.next()) {
var key = _c.value;
this.parameterKeysToValues[key] = '';
this.keyLoaded[key] = false;
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
}
finally { if (e_1) throw e_1.error; }
}
}
SSMParameterStore.prototype.fetchOne = function (key) {
return __awaiter(this, void 0, void 0, function () {
var ssmResponse, err_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, this.ssm.send(new client_ssm_1.GetParameterCommand({ Name: key, WithDecryption: true }))];
case 1:
ssmResponse = _a.sent();
return [2 /*return*/, ssmResponse.Parameter.Value];
case 2:
err_1 = _a.sent();
if (err_1 instanceof client_ssm_1.ParameterNotFound) {
return [2 /*return*/, ''];
}
throw err_1;
case 3: return [2 /*return*/];
}
});
});
};
SSMParameterStore.prototype.fetchTen = function (keys) {
return __awaiter(this, void 0, void 0, function () {
var ssmResponse, responseKeysToValues, _a, _b, parameter;
var e_2, _c;
return __generator(this, function (_d) {
switch (_d.label) {
case 0: return [4 /*yield*/, this.ssm.send(new client_ssm_1.GetParametersCommand({ Names: keys, WithDecryption: true }))];
case 1:
ssmResponse = _d.sent();
responseKeysToValues = {};
try {
for (_a = __values(ssmResponse.Parameters), _b = _a.next(); !_b.done; _b = _a.next()) {
parameter = _b.value;
responseKeysToValues[parameter.Name] = parameter.Value;
}
}
catch (e_2_1) { e_2 = { error: e_2_1 }; }
finally {
try {
if (_b && !_b.done && (_c = _a.return)) _c.call(_a);
}
finally { if (e_2) throw e_2.error; }
}
return [2 /*return*/, keys.map(function (key) { return responseKeysToValues[key] || ''; })];
}
});
});
};
SSMParameterStore.prototype.loadAll = function () {
return __awaiter(this, void 0, void 0, function () {
var parameterKeysArray, parameterKeysArrayChunks;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
parameterKeysArray = Object.values(this.parameterNamesToKeys);
parameterKeysArrayChunks = chunk(parameterKeysArray, 10);
return [4 /*yield*/, Promise.all(parameterKeysArrayChunks.map(function (keysChunk) { return __awaiter(_this, void 0, void 0, function () {
var chunkValues;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.fetchTen(keysChunk)];
case 1:
chunkValues = _a.sent();
chunkValues.forEach(function (value, idx) {
var key = keysChunk[idx];
_this.parameterKeysToValues[key] = value;
_this.keyLoaded[key] = true;
});
return [2 /*return*/];
}
});
}); }))];
case 1:
_a.sent();
return [2 /*return*/];
}
});
});
};
SSMParameterStore.prototype.preload = function (options) {
if (options === void 0) { options = { ignoreCache: false }; }
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (options.ignoreCache || Object.values(this.keyLoaded).some(function (keyLoadedState) { return keyLoadedState === false; })) {
return [2 /*return*/, this.loadAll()];
}
return [2 /*return*/];
});
});
};
SSMParameterStore.prototype.get = function (name, options) {
if (options === void 0) { options = { ignoreCache: false }; }
return __awaiter(this, void 0, void 0, function () {
var key, value;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
key = this.parameterNamesToKeys[name];
if (!key) {
throw new Error("Unknown parameter ".concat(String(name), ". Not in new SSMParameterStore({ }) declaration"));
}
if (!(options.ignoreCache || !this.keyLoaded[key])) return [3 /*break*/, 2];
return [4 /*yield*/, this.fetchOne(key)];
case 1:
value = _a.sent();
this.parameterKeysToValues[key] = value;
this.keyLoaded[key] = true;
_a.label = 2;
case 2: return [2 /*return*/, this.parameterKeysToValues[key]];
}
});
});
};
SSMParameterStore.prototype.getAll = function (options) {
if (options === void 0) { options = { ignoreCache: false }; }
return __awaiter(this, void 0, void 0, function () {
var response;
var _this = this;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.preload(options)];
case 1:
_a.sent();
response = {};
Object.entries(this.parameterNamesToKeys).forEach(function (_a) {
var _b = __read(_a, 2), name = _b[0], key = _b[1];
response[name] = _this.parameterKeysToValues[key];
});
return [2 /*return*/, response];
}
});
});
};
return SSMParameterStore;
}());
module.exports = SSMParameterStore;
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