@fanoutio/subscriptions-transport-ws-over-http
Version:
A websocket-over-http transport for GraphQL subscriptions
164 lines • 8.57 kB
JavaScript
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 (_) 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 };
}
};
import os from 'os';
import * as fs from "fs";
var TMP_ROOT = os.tmpdir();
var TMP_DIR = "subs-ws-over-http";
import assert from "assert";
var TempDirectoryPersistence = /** @class */ (function () {
function TempDirectoryPersistence() {
}
TempDirectoryPersistence.prototype.prepare = function () {
return __awaiter(this, void 0, void 0, function () {
var files, result, _i, files_1, file, data, json;
return __generator(this, function (_a) {
if (this.persistedMessages == null) {
files = void 0;
try {
console.log("Reading directory " + TMP_ROOT + "/" + TMP_DIR + "/");
files = fs.readdirSync(TMP_ROOT + "/" + TMP_DIR + "/", { withFileTypes: true });
console.log("read directory");
}
catch (ex) {
files = [];
}
result = {};
for (_i = 0, files_1 = files; _i < files_1.length; _i++) {
file = files_1[_i];
if (file.isDirectory()) {
console.log("item " + file.name);
data = void 0;
try {
json = fs.readFileSync(TMP_ROOT + "/" + TMP_DIR + "/" + file.name + "/data.json", 'utf8');
data = JSON.parse(json);
}
catch (ex) {
data = null;
}
if (data != null) {
result[file.name] = data;
}
}
}
console.log("result", JSON.stringify(result));
this.persistedMessages = result;
}
return [2 /*return*/];
});
});
};
TempDirectoryPersistence.prototype.getPersistedMessages = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.prepare()];
case 1:
_a.sent();
assert(this.persistedMessages != null);
return [2 /*return*/, this.persistedMessages];
}
});
});
};
TempDirectoryPersistence.prototype.persistMessage = function (wsId, message) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.prepare()];
case 1:
_a.sent();
assert(this.persistedMessages != null);
if (this.persistedMessages[wsId] == null) {
this.persistedMessages[wsId] = [];
}
this.persistedMessages[wsId].push(message);
try {
console.log("Making directory " + TMP_ROOT + "/" + TMP_DIR);
fs.mkdirSync(TMP_ROOT + "/" + TMP_DIR);
console.log("Made directory " + TMP_ROOT + "/" + TMP_DIR);
}
catch (ex) {
if (ex.code !== 'EEXIST') {
console.log("Directory exists " + TMP_ROOT + "/" + TMP_DIR);
throw ex;
}
}
try {
console.log("Making directory " + TMP_ROOT + "/" + TMP_DIR + "/" + wsId);
fs.mkdirSync(TMP_ROOT + "/" + TMP_DIR + "/" + wsId);
console.log("Made directory " + TMP_ROOT + "/" + TMP_DIR + "/" + wsId);
}
catch (ex) {
if (ex.code !== 'EEXIST') {
console.log("Directory exists " + TMP_ROOT + "/" + TMP_DIR + "/" + wsId);
throw ex;
}
}
console.log("Writing file " + TMP_ROOT + "/" + TMP_DIR + "/" + wsId + "/data.json");
console.log("wsId", wsId);
console.log("savedSubscriptions", JSON.stringify(this.persistedMessages[wsId]));
fs.writeFileSync(TMP_ROOT + "/" + TMP_DIR + "/" + wsId + "/data.json", JSON.stringify(this.persistedMessages[wsId]), 'utf8');
return [2 /*return*/];
}
});
});
};
TempDirectoryPersistence.prototype.purgePersistedMessage = function (wsId) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.prepare()];
case 1:
_a.sent();
assert(this.persistedMessages != null);
delete this.persistedMessages[wsId];
try {
fs.rmdirSync(TMP_ROOT + "/" + TMP_DIR + "/" + wsId, { recursive: true });
console.log("Deleted directory " + TMP_ROOT + "/" + TMP_DIR + "/" + wsId);
}
catch (ex) {
console.log("Could not delete directory " + TMP_ROOT + "/" + TMP_DIR + "/" + wsId);
}
return [2 /*return*/];
}
});
});
};
return TempDirectoryPersistence;
}());
export { TempDirectoryPersistence };
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