tedious
Version:
A TDS driver, for connecting to MS SQLServer databases.
149 lines (147 loc) • 18.4 kB
JavaScript
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.connectInParallel = connectInParallel;
exports.connectInSequence = connectInSequence;
exports.lookupAllAddresses = lookupAllAddresses;
var _net = _interopRequireDefault(require("net"));
var _nodeUrl = _interopRequireDefault(require("node:url"));
var _abortError = _interopRequireDefault(require("./errors/abort-error"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
async function connectInParallel(options, lookup, signal) {
if (signal.aborted) {
throw new _abortError.default();
}
const addresses = await lookupAllAddresses(options.host, lookup, signal);
return await new Promise((resolve, reject) => {
const sockets = new Array(addresses.length);
const errors = [];
function onError(err) {
errors.push(err);
this.removeListener('error', onError);
this.removeListener('connect', onConnect);
this.destroy();
if (errors.length === addresses.length) {
signal.removeEventListener('abort', onAbort);
reject(new AggregateError(errors, 'Could not connect (parallel)'));
}
}
function onConnect() {
signal.removeEventListener('abort', onAbort);
for (let j = 0; j < sockets.length; j++) {
const socket = sockets[j];
if (this === socket) {
continue;
}
socket.removeListener('error', onError);
socket.removeListener('connect', onConnect);
socket.destroy();
}
resolve(this);
}
const onAbort = () => {
for (let j = 0; j < sockets.length; j++) {
const socket = sockets[j];
socket.removeListener('error', onError);
socket.removeListener('connect', onConnect);
socket.destroy();
}
reject(new _abortError.default());
};
for (let i = 0, len = addresses.length; i < len; i++) {
const socket = sockets[i] = _net.default.connect({
...options,
host: addresses[i].address,
family: addresses[i].family
});
socket.on('error', onError);
socket.on('connect', onConnect);
}
signal.addEventListener('abort', onAbort, {
once: true
});
});
}
async function connectInSequence(options, lookup, signal) {
if (signal.aborted) {
throw new _abortError.default();
}
const errors = [];
const addresses = await lookupAllAddresses(options.host, lookup, signal);
for (const address of addresses) {
try {
return await new Promise((resolve, reject) => {
const socket = _net.default.connect({
...options,
host: address.address,
family: address.family
});
const onAbort = () => {
socket.removeListener('error', onError);
socket.removeListener('connect', onConnect);
socket.destroy();
reject(new _abortError.default());
};
const onError = err => {
signal.removeEventListener('abort', onAbort);
socket.removeListener('error', onError);
socket.removeListener('connect', onConnect);
socket.destroy();
reject(err);
};
const onConnect = () => {
signal.removeEventListener('abort', onAbort);
socket.removeListener('error', onError);
socket.removeListener('connect', onConnect);
resolve(socket);
};
signal.addEventListener('abort', onAbort, {
once: true
});
socket.on('error', onError);
socket.on('connect', onConnect);
});
} catch (err) {
if (err instanceof Error && err.name === 'AbortError') {
throw err;
}
errors.push(err);
continue;
}
}
throw new AggregateError(errors, 'Could not connect (sequence)');
}
/**
* Look up all addresses for the given hostname.
*/
async function lookupAllAddresses(host, lookup, signal) {
if (signal.aborted) {
throw new _abortError.default();
}
if (_net.default.isIPv6(host)) {
return [{
address: host,
family: 6
}];
} else if (_net.default.isIPv4(host)) {
return [{
address: host,
family: 4
}];
} else {
return await new Promise((resolve, reject) => {
const onAbort = () => {
reject(new _abortError.default());
};
signal.addEventListener('abort', onAbort);
lookup(_nodeUrl.default.domainToASCII(host), {
all: true
}, (err, addresses) => {
signal.removeEventListener('abort', onAbort);
err ? reject(err) : resolve(addresses);
});
});
}
}
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void) => void;\n\nexport async function connectInParallel(options: { host: string, port: number, localAddress?: string | undefined }, lookup: LookupFunction, signal: AbortSignal) {\n  if (signal.aborted) {\n    throw new AbortError();\n  }\n\n  const addresses = await lookupAllAddresses(options.host, lookup, signal);\n\n  return await new Promise<net.Socket>((resolve, reject) => {\n    const sockets = new Array(addresses.length);\n\n    const errors: Error[] = [];\n\n    function onError(this: net.Socket, err: Error) {\n      errors.push(err);\n\n      this.removeListener('error', onError);\n      this.removeListener('connect', onConnect);\n\n      this.destroy();\n\n      if (errors.length === addresses.length) {\n        signal.removeEventListener('abort', onAbort);\n\n        reject(new AggregateError(errors, 'Could not connect (parallel)'));\n      }\n    }\n\n    function onConnect(this: net.Socket) {\n      signal.removeEventListener('abort', onAbort);\n\n      for (let j = 0; j < sockets.length; j++) {\n        const socket = sockets[j];\n\n        if (this === socket) {\n          continue;\n        }\n\n        socket.removeListener('error', onError);\n        socket.removeListener('connect', onConnect);\n        socket.destroy();\n      }\n\n      resolve(this);\n    }\n\n    const onAbort = () => {\n      for (let j = 0; j < sockets.length; j++) {\n        const socket = sockets[j];\n\n        socket.removeListener('error', onError);\n        socket.removeListener('connect', onConnect);\n\n        socket.destroy();\n      }\n\n      reject(new AbortError());\n    };\n\n    for (let i = 0, len = addresses.length; i < len; i++) {\n      const socket = sockets[i] = net.connect({\n        ...options,\n        host: addresses[i].address,\n        family: addresses[i].family\n      });\n\n      socket.on('error', onError);\n      socket.on('connect', onConnect);\n    }\n\n    signal.addEventListener('abort', onAbort, { once: true });\n  });\n}\n\nexport async function connectInSequence(options: { host: string, port: number, localAddress?: string | undefined }, lookup: LookupFunction, signal: AbortSignal) {\n  if (signal.aborted) {\n    throw new AbortError();\n  }\n\n  const errors: any[] = [];\n  const addresses = await lookupAllAddresses(options.host, lookup, signal);\n\n  for (const address of addresses) {\n    try {\n      return await new Promise<net.Socket>((resolve, reject) => {\n        const socket = net.connect({\n          ...options,\n          host: address.address,\n          family: address.family\n        });\n\n        const onAbort = () => {\n          socket.removeListener('error', onError);\n          socket.removeListener('connect', onConnect);\n\n          socket.destroy();\n\n          reject(new AbortError());\n        };\n\n        const onError = (err: Error) => {\n          signal.removeEventListener('abort', onAbort);\n\n          socket.removeListener('error', onError);\n          socket.removeListener('connect', onConnect);\n\n          socket.destroy();\n\n          reject(err);\n        };\n\n        const onConnect = () => {\n          signal.removeEventListener('abort', onAbort);\n\n          socket.removeListener('error', onError);\n          socket.removeListener('connect', onConnect);\n\n          resolve(socket);\n        };\n\n        signal.addEventListener('abort', onAbort, { once: true });\n\n        socket.on('error', onError);\n        socket.on('connect', onConnect);\n      });\n    } catch (err) {\n      if (err instanceof Error && err.name === 'AbortError') {\n        throw err;\n      }\n\n      errors.push(err);\n\n      continue;\n    }\n  }\n\n  throw new AggregateError(errors, 'Could not connect (sequence)');\n}\n\n/**\n * Look up all addresses for the given hostname.\n */\nexport async function lookupAllAddresses(host: string, lookup: LookupFunction, signal: AbortSignal): Promise<dns.LookupAddress[]> {\n  if (signal.aborted) {\n    throw new AbortError();\n  }\n\n  if (net.isIPv6(host)) {\n    return [{ address: host, family: 6 }];\n  } else if (net.isIPv4(host)) {\n    return [{ address: host, family: 4 }];\n  } else {\n    return await new Promise<LookupAddress[]>((resolve, reject) => {\n      const onAbort = () => {\n        reject(new AbortError());\n      };\n\n      signal.addEventListener('abort', onAbort);\n\n      lookup(url.domainToASCII(host), { all: true }, (err, addresses) => {\n        signal.removeEventListener('abort', onAbort);\n\n        err ? reject(err) : resolve(addresses);\n      });\n    });\n  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;