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"use strict";
/**
* Node IPC is specific to Node, but when spawning child processes in Rust, it won't have IPC.
*
* Thus, this is a wrapper which is spawned by Rust, which will create a Node IPC channel and pipe it to a ZeroMQ Channel
*
* Main Nx Process
* * Calls Rust Fork Function
* * `node fork.js`
* * Create a Rust - Node.js Agnostic Channel aka Pseudo IPC Channel
* * This returns RustChildProcess
* * RustChildProcess.onMessage(msg => ());
* * pseudo_ipc_channel.on_message() => tx.send(msg);
* * Node.js Fork Wrapper (fork.js)
* * fork(run-command.js) with `inherit` and `ipc`
* * This will create a Node IPC Channel
* * channel = getPseudoIpcChannel(process.env.NX_IPC_CHANNEL_ID)
* * forkChildProcess.on('message', writeToPseudoIpcChannel)
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.PseudoIPCClient = exports.PseudoIPCServer = void 0;
const net_1 = require("net");
const consume_messages_from_socket_1 = require("../utils/consume-messages-from-socket");
class PseudoIPCServer {
constructor(path) {
this.path = path;
this.sockets = new Set();
this.childMessages = [];
this.childReadyMap = new Map();
}
init() {
return new Promise((res) => {
this.server = new net_1.Server((socket) => {
this.sockets.add(socket);
this.registerChildMessages(socket);
socket.on('close', () => {
this.sockets.delete(socket);
});
});
this.server.listen(this.path, () => {
res();
});
});
}
async waitForChildReady(childId) {
return new Promise((res) => {
this.childReadyMap.set(childId, res);
});
}
registerChildMessages(socket) {
socket.on('data', (0, consume_messages_from_socket_1.consumeMessagesFromSocket)(async (rawMessage) => {
const { type, message } = JSON.parse(rawMessage);
if (type === 'TO_PARENT_FROM_CHILDREN') {
for (const childMessage of this.childMessages) {
childMessage.onMessage(message);
}
}
else if (type === 'CHILD_READY') {
const childId = message;
if (this.childReadyMap.has(childId)) {
this.childReadyMap.get(childId)();
}
}
}));
socket.on('close', () => {
for (const childMessage of this.childMessages) {
childMessage.onClose?.();
}
});
socket.on('error', (err) => {
for (const childMessage of this.childMessages) {
childMessage.onError?.(err);
}
});
}
sendMessageToChildren(message) {
this.sockets.forEach((socket) => {
socket.write(JSON.stringify({ type: 'TO_CHILDREN_FROM_PARENT', message }));
// send EOT to indicate that the message has been fully written
socket.write(String.fromCodePoint(4));
});
}
sendMessageToChild(id, message) {
this.sockets.forEach((socket) => {
socket.write(JSON.stringify({ type: 'TO_CHILDREN_FROM_PARENT', id, message }));
socket.write(String.fromCodePoint(4));
});
}
onMessageFromChildren(onMessage, onClose = () => { }, onError = (err) => { }) {
this.childMessages.push({
onMessage,
onClose,
onError,
});
}
close() {
this.server?.close();
this.sockets.forEach((s) => s.destroy());
}
}
exports.PseudoIPCServer = PseudoIPCServer;
class PseudoIPCClient {
constructor(path) {
this.path = path;
this.socket = (0, net_1.connect)(this.path);
}
sendMessageToParent(message) {
this.socket.write(JSON.stringify({ type: 'TO_PARENT_FROM_CHILDREN', message }));
// send EOT to indicate that the message has been fully written
this.socket.write(String.fromCodePoint(4));
}
notifyChildIsReady(id) {
this.socket.write(JSON.stringify({
type: 'CHILD_READY',
message: id,
}));
// send EOT to indicate that the message has been fully written
this.socket.write(String.fromCodePoint(4));
}
onMessageFromParent(forkId, onMessage, onClose = () => { }, onError = (err) => { }) {
this.socket.on('data', (0, consume_messages_from_socket_1.consumeMessagesFromSocket)(async (rawMessage) => {
const { id, type, message } = JSON.parse(rawMessage);
if (type === 'TO_CHILDREN_FROM_PARENT') {
if (id && id === forkId) {
onMessage(message);
}
else if (id === undefined) {
onMessage(message);
}
}
}));
this.socket.on('close', onClose);
this.socket.on('error', onError);
return this;
}
close() {
this.socket?.destroy();
}
}
exports.PseudoIPCClient = PseudoIPCClient;