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Switched image API from raw TCP to websockets, removed selective image reading code

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TheEssem 2021-06-18 00:10:11 -05:00
parent c2e13c26b6
commit a0a32c31b9
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7 changed files with 133 additions and 138 deletions
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141
api/index.js
View file

@ -1,12 +1,10 @@
// code originally provided by tzlil
require("dotenv").config(); require("dotenv").config();
const os = require("os"); const os = require("os");
//const { run } = require("../utils/image-runner.js"); //const { run } = require("../utils/image-runner.js");
const { Worker } = require("worker_threads"); const { Worker } = require("worker_threads");
const path = require("path"); const path = require("path");
const net = require("net");
const http = require("http"); const http = require("http");
const WebSocket = require("ws");
const start = process.hrtime(); const start = process.hrtime();
const log = (msg, jobNum) => { const log = (msg, jobNum) => {
@ -23,7 +21,7 @@ class JobCache extends Map {
} }
const jobs = new JobCache(); const jobs = new JobCache();
// Should look like UUID : { addr : "someaddr", port: someport, msg: "request" } // Should look like UUID : { msg: "request", num: <job number> }
const queue = []; const queue = [];
// Array of UUIDs // Array of UUIDs
@ -45,7 +43,7 @@ const acceptJob = (uuid, sock) => {
}).catch((err) => { }).catch((err) => {
console.error(`Error on job ${uuid}:`, err); console.error(`Error on job ${uuid}:`, err);
jobs.delete(uuid); jobs.delete(uuid);
sock.write(Buffer.concat([Buffer.from([0x2]), Buffer.from(uuid), Buffer.from(err.message)])); sock.send(Buffer.concat([Buffer.from([0x2]), Buffer.from(uuid), Buffer.from(err.message)]));
}).finally(() => { }).finally(() => {
jobAmount--; jobAmount--;
if (queue.length > 0) { if (queue.length > 0) {
@ -54,16 +52,68 @@ const acceptJob = (uuid, sock) => {
}); });
}; };
const httpServer = http.createServer((req, res) => { const wss = new WebSocket.Server({ clientTracking: true, noServer: true });
if (req.method !== "GET") {
wss.on("connection", (ws, request) => {
log(`WS client ${request.socket.remoteAddress}:${request.socket.remotePort} has connected`);
ws.on("error", (err) => {
console.error(err);
});
ws.on("message", (msg) => {
const opcode = msg.readUint8(0);
const req = msg.toString().slice(1,msg.length);
console.log(req);
// 0x00 == Cancel job
// 0x01 == Queue job
if (opcode == 0x00) {
delete queue[queue.indexOf(req) - 1];
jobs.delete(req);
} else if (opcode == 0x01) {
const length = parseInt(req.slice(0, 1));
const num = req.slice(1, length + 1);
const obj = req.slice(length + 1);
const job = { msg: obj, num: jobAmount };
const uuid = uuidv4();
jobs.set(uuid, job);
queue.push(uuid);
const newBuffer = Buffer.concat([Buffer.from([0x00]), Buffer.from(uuid), Buffer.from(num)]);
ws.send(newBuffer);
if (jobAmount < MAX_JOBS) {
log(`Got WS request for job ${job.msg} with id ${uuid}`, job.num);
acceptJob(uuid, ws);
} else {
log(`Got WS request for job ${job.msg} with id ${uuid}, queued in position ${queue.indexOf(uuid)}`, job.num);
}
} else {
log("Could not parse WS message");
}
});
ws.on("close", () => {
log(`WS client ${request.socket.remoteAddress}:${request.socket.remotePort} has disconnected`);
});
});
wss.on("error", (err) => {
console.error("A WS error occurred: ", err);
});
const httpServer = http.createServer();
httpServer.on("request", async (req, res) => {
if (req.method !== "GET" && req.method !== "POST") {
res.statusCode = 405; res.statusCode = 405;
return res.end("405 Method Not Allowed"); return res.end("405 Method Not Allowed");
} }
const reqUrl = new URL(req.url, `http://${req.headers.host}`); const reqUrl = new URL(req.url, `http://${req.headers.host}`);
if (reqUrl.pathname === "/status") { if (reqUrl.pathname === "/status" && req.method === "GET") {
log(`Sending server status to ${req.socket.remoteAddress}:${req.socket.remotePort} via HTTP`); log(`Sending server status to ${req.socket.remoteAddress}:${req.socket.remotePort} via HTTP`);
return res.end(Buffer.from((MAX_JOBS - jobAmount).toString())); return res.end(Buffer.from((MAX_JOBS - jobAmount).toString()));
} else if (reqUrl.pathname === "/running") { } else if (reqUrl.pathname === "/running" && req.method === "GET") {
log(`Sending currently running jobs to ${req.socket.remoteAddress}:${req.socket.remotePort} via HTTP`); log(`Sending currently running jobs to ${req.socket.remoteAddress}:${req.socket.remotePort} via HTTP`);
const keys = jobs.keys(); const keys = jobs.keys();
const newObject = { queued: queue.length, runningJobs: jobAmount, max: MAX_JOBS }; const newObject = { queued: queue.length, runningJobs: jobAmount, max: MAX_JOBS };
@ -79,7 +129,7 @@ const httpServer = http.createServer((req, res) => {
} }
} }
return res.end(JSON.stringify(newObject)); return res.end(JSON.stringify(newObject));
} else if (reqUrl.pathname === "/image") { } else if (reqUrl.pathname === "/image" && req.method === "GET") {
if (!reqUrl.searchParams.has("id")) { if (!reqUrl.searchParams.has("id")) {
res.statusCode = 400; res.statusCode = 400;
return res.end("400 Bad Request"); return res.end("400 Bad Request");
@ -102,64 +152,24 @@ const httpServer = http.createServer((req, res) => {
} }
}); });
httpServer.on("upgrade", (req, sock, head) => {
const reqUrl = new URL(req.url, `http://${req.headers.host}`);
if (reqUrl.pathname === "/sock") {
wss.handleUpgrade(req, sock, head, (ws) => {
wss.emit("connection", ws, req);
});
} else {
sock.destroy();
}
});
httpServer.on("error", (e) => { httpServer.on("error", (e) => {
console.error("An HTTP error occurred: ", e); console.error("An HTTP error occurred: ", e);
}); });
httpServer.listen(8081, () => { httpServer.listen(8080, () => {
log("HTTP listening on port 8081"); log("HTTP listening on port 8080");
});
const server = net.createServer((sock) => { // Create a TCP socket/server to listen to requests
log(`TCP client ${sock.remoteAddress}:${sock.remotePort} has connected`);
sock.on("error", (e) => {
console.error(e);
});
sock.on("data", (msg) => {
const opcode = msg.readUint8(0);
const req = msg.toString().slice(1,msg.length);
console.log(req);
// 0x00 == Cancel job
// 0x01 == Queue job
if (opcode == 0x00) {
delete queue[queue.indexOf(req) - 1];
jobs.delete(req);
} else if (opcode == 0x01) {
const length = parseInt(req.slice(0, 1));
const num = req.slice(1, length + 1);
const obj = req.slice(length + 1);
const job = { addr: sock.remoteAddress, port: sock.remotePort, msg: obj, num: jobAmount };
const uuid = uuidv4();
jobs.set(uuid, job);
queue.push(uuid);
const newBuffer = Buffer.concat([Buffer.from([0x00]), Buffer.from(uuid), Buffer.from(num)]);
sock.write(newBuffer);
if (jobAmount < MAX_JOBS) {
log(`Got TCP request for job ${job.msg} with id ${uuid}`, job.num);
acceptJob(uuid, sock);
} else {
log(`Got TCP request for job ${job.msg} with id ${uuid}, queued in position ${queue.indexOf(uuid)}`, job.num);
}
} else {
log("Could not parse TCP message");
}
});
sock.on("end", () => {
log(`TCP client ${sock.remoteAddress}:${sock.remotePort} has disconnected`);
});
});
server.on("error", (e) => {
console.error("A TCP error occurred: ", e);
});
server.listen(8080, () => {
log("TCP listening on port 8080");
}); });
const runJob = (job, sock) => { const runJob = (job, sock) => {
@ -187,8 +197,7 @@ const runJob = (job, sock) => {
jobObject.data = data.buffer; jobObject.data = data.buffer;
jobObject.ext = data.fileExtension; jobObject.ext = data.fileExtension;
jobs.set(job.uuid, jobObject); jobs.set(job.uuid, jobObject);
sock.write(Buffer.concat([Buffer.from([0x1]), Buffer.from(job.uuid)]), (e) => { sock.send(Buffer.concat([Buffer.from([0x1]), Buffer.from(job.uuid)]), () => {
if (e) return reject(e);
return resolve(); return resolve();
}); });
}); });

2
classes/imageCommand.js
View file

@ -108,7 +108,7 @@ class ImageCommand extends Command {
name: `${this.constructor.command}.${type}` name: `${this.constructor.command}.${type}`
}; };
} catch (e) { } catch (e) {
if (e.toString().includes("Not connected to image server")) return "I'm still trying to connect to the image servers. Please wait a little bit."; if (e.toString().includes("Not connected to image server")) return "I can't seem to contact the image servers, they might be down or still trying to start up. Please wait a little bit.";
throw e; throw e;
} finally { } finally {
if (status && await this.client.getMessage(status.channel.id, status.id).catch(() => undefined)) await status.delete(); if (status && await this.client.getMessage(status.channel.id, status.id).catch(() => undefined)) await status.delete();

16
events/messageCreate.js
View file

@ -2,7 +2,7 @@ const fs = require("fs");
const database = require("../utils/database.js"); const database = require("../utils/database.js");
const logger = require("../utils/logger.js"); const logger = require("../utils/logger.js");
const collections = require("../utils/collections.js"); const collections = require("../utils/collections.js");
const commands = [...collections.aliases.keys(), ...collections.commands.keys()]; //const commands = [...collections.aliases.keys(), ...collections.commands.keys()];
// run when someone sends a message // run when someone sends a message
module.exports = async (client, cluster, ipc, message) => { module.exports = async (client, cluster, ipc, message) => {
@ -12,16 +12,6 @@ module.exports = async (client, cluster, ipc, message) => {
// don't run command if bot can't send messages // don't run command if bot can't send messages
if (message.channel.guild && !message.channel.permissionsOf(client.user.id).has("sendMessages")) return; if (message.channel.guild && !message.channel.permissionsOf(client.user.id).has("sendMessages")) return;
// this is here to prevent reading the database if a message is unrelated
let valid = false;
for (const key of commands) {
if (message.content.toLowerCase().includes(key)) {
valid = true;
break;
}
}
if (!valid) return;
let prefixCandidate; let prefixCandidate;
if (message.channel.guild) { if (message.channel.guild) {
if (collections.prefixCache.has(message.channel.guild.id)) { if (collections.prefixCache.has(message.channel.guild.id)) {
@ -96,8 +86,8 @@ module.exports = async (client, cluster, ipc, message) => {
try { try {
await database.addCount(collections.aliases.has(command) ? collections.aliases.get(command) : command); await database.addCount(collections.aliases.has(command) ? collections.aliases.get(command) : command);
const startTime = new Date(); const startTime = new Date();
const commandClass = new cmd(client, cluster, ipc, message, args, message.content.substring(prefix.length).trim().replace(command, "").trim()); const commandClass = new cmd(client, cluster, ipc, message, args, message.content.substring(prefix.length).trim().replace(command, "").trim()); // we also provide the message content as a parameter for cases where we need more accuracy
const result = await commandClass.run(); // we also provide the message content as a parameter for cases where we need more accuracy const result = await commandClass.run();
const endTime = new Date(); const endTime = new Date();
if ((endTime - startTime) >= 180000) reference.allowedMentions.repliedUser = true; if ((endTime - startTime) >= 180000) reference.allowedMentions.repliedUser = true;
if (typeof result === "string") { if (typeof result === "string") {

3
messages.json
View file

@ -139,6 +139,7 @@
"WhatsApp", "WhatsApp",
"Half Life 3", "Half Life 3",
"Tower Defense Simulator", "Tower Defense Simulator",
"roblox on linux 2021" "roblox on linux 2021",
"trans rights"
] ]
} }

16
package-lock.json generated
View file

@ -22,7 +22,8 @@
"node-emoji": "^1.10.0", "node-emoji": "^1.10.0",
"node-fetch": "^2.6.1", "node-fetch": "^2.6.1",
"qrcode": "^1.4.4", "qrcode": "^1.4.4",
"sharp": "^0.28.2" "sharp": "^0.28.2",
"ws": "*"
}, },
"devDependencies": { "devDependencies": {
"@babel/eslint-parser": "^7.13.8", "@babel/eslint-parser": "^7.13.8",
@ -39,6 +40,7 @@
"mongoose": "^5.11.8", "mongoose": "^5.11.8",
"pg": "^8.5.1", "pg": "^8.5.1",
"uuid": "^8.3.1", "uuid": "^8.3.1",
"ws": "^7.5.0",
"zlib-sync": "^0.1.6" "zlib-sync": "^0.1.6"
} }
}, },
@ -3519,9 +3521,9 @@
"integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=" "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
}, },
"node_modules/ws": { "node_modules/ws": {
"version": "7.4.6", "version": "7.5.0",
"resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz", "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.0.tgz",
"integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==", "integrity": "sha512-6ezXvzOZupqKj4jUqbQ9tXuJNo+BR2gU8fFRk3XCP3e0G6WT414u5ELe6Y0vtp7kmSJ3F7YWObSNr1ESsgi4vw==",
"engines": { "engines": {
"node": ">=8.3.0" "node": ">=8.3.0"
}, },
@ -6334,9 +6336,9 @@
"integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=" "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
}, },
"ws": { "ws": {
"version": "7.4.6", "version": "7.5.0",
"resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz", "resolved": "https://registry.npmjs.org/ws/-/ws-7.5.0.tgz",
"integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A==", "integrity": "sha512-6ezXvzOZupqKj4jUqbQ9tXuJNo+BR2gU8fFRk3XCP3e0G6WT414u5ELe6Y0vtp7kmSJ3F7YWObSNr1ESsgi4vw==",
"requires": {} "requires": {}
}, },
"xtend": { "xtend": {

1
package.json
View file

@ -51,6 +51,7 @@
"mongoose": "^5.11.8", "mongoose": "^5.11.8",
"pg": "^8.5.1", "pg": "^8.5.1",
"uuid": "^8.3.1", "uuid": "^8.3.1",
"ws": "^7.5.0",
"zlib-sync": "^0.1.6" "zlib-sync": "^0.1.6"
} }
} }

90
utils/image.js
View file

@ -2,7 +2,7 @@ const magick = require("../build/Release/image.node");
const { Worker } = require("worker_threads"); const { Worker } = require("worker_threads");
const fetch = require("node-fetch"); const fetch = require("node-fetch");
const fs = require("fs"); const fs = require("fs");
const net = require("net"); const WebSocket = require("ws");
const fileType = require("file-type"); const fileType = require("file-type");
const path = require("path"); const path = require("path");
const { EventEmitter } = require("events"); const { EventEmitter } = require("events");
@ -12,7 +12,7 @@ const formats = ["image/jpeg", "image/png", "image/webp", "image/gif", "video/mp
exports.jobs = {}; exports.jobs = {};
exports.connections = []; exports.connections = new Map();
exports.servers = JSON.parse(fs.readFileSync("./servers.json", { encoding: "utf8" })).image; exports.servers = JSON.parse(fs.readFileSync("./servers.json", { encoding: "utf8" })).image;
@ -32,17 +32,18 @@ exports.repopulate = async () => {
exports.getStatus = () => { exports.getStatus = () => {
return new Promise((resolve, reject) => { return new Promise((resolve, reject) => {
let serversLeft = this.connections.length; let serversLeft = this.connections.size;
const statuses = []; const statuses = [];
const timeout = setTimeout(() => { const timeout = setTimeout(() => {
resolve(statuses); resolve(statuses);
}, 5000); }, 5000);
for (const connection of this.connections) { for (const address of this.connections.keys()) {
if (!connection.remoteAddress) { const connection = this.connections.get(address);
if (connection.readyState !== 1) {
serversLeft--; serversLeft--;
continue; continue;
} }
fetch(`http://${connection.remoteAddress}:8081/running`).then(statusRequest => statusRequest.json()).then((status) => { fetch(`http://${address}:8080/running`).then(statusRequest => statusRequest.json()).then((status) => {
serversLeft--; serversLeft--;
statuses.push(status); statuses.push(status);
if (!serversLeft) { if (!serversLeft) {
@ -67,16 +68,15 @@ exports.getStatus = () => {
exports.connect = (server) => { exports.connect = (server) => {
return new Promise((resolve, reject) => { return new Promise((resolve, reject) => {
const connection = net.createConnection(8080, server); const connection = new WebSocket(`ws://${server}:8080/sock`);
const timeout = setTimeout(() => { const timeout = setTimeout(() => {
const connectionIndex = this.connections.indexOf(connection); this.connections.delete(server);
if (connectionIndex < 0) delete this.connections[connectionIndex];
reject(`Failed to connect to ${server}`); reject(`Failed to connect to ${server}`);
}, 5000); }, 5000);
connection.once("connect", () => { connection.once("open", () => {
clearTimeout(timeout); clearTimeout(timeout);
}); });
connection.on("data", async (msg) => { connection.on("message", async (msg) => {
const opcode = msg.readUint8(0); const opcode = msg.readUint8(0);
const req = msg.slice(37, msg.length); const req = msg.slice(37, msg.length);
const uuid = msg.slice(1, 37).toString(); const uuid = msg.slice(1, 37).toString();
@ -87,7 +87,7 @@ exports.connect = (server) => {
} else if (opcode === 0x01) { // Job completed successfully } else if (opcode === 0x01) { // Job completed successfully
// the image API sends all job responses over the same socket; make sure this is ours // the image API sends all job responses over the same socket; make sure this is ours
if (this.jobs[uuid]) { if (this.jobs[uuid]) {
const imageReq = await fetch(`http://${connection.remoteAddress}:8081/image?id=${uuid}`); const imageReq = await fetch(`http://${server}:8080/image?id=${uuid}`);
const image = await imageReq.buffer(); const image = await imageReq.buffer();
// The response data is given as the file extension/ImageMagick type of the image (e.g. "png"), followed // The response data is given as the file extension/ImageMagick type of the image (e.g. "png"), followed
// by a newline, followed by the image data. // by a newline, followed by the image data.
@ -103,49 +103,61 @@ exports.connect = (server) => {
connection.on("error", (e) => { connection.on("error", (e) => {
logger.error(e.toString()); logger.error(e.toString());
}); });
connection.once("end", () => { connection.once("close", () => {
for (const uuid of Object.keys(this.jobs)) { for (const uuid of Object.keys(this.jobs)) {
if (this.jobs[uuid].addr === connection.remoteAddress) this.jobs[uuid].event.emit("error", "Job ended prematurely due to a closed connection; please run your image job again"); if (this.jobs[uuid].addr === server) this.jobs[uuid].event.emit("error", "Job ended prematurely due to a closed connection; please run your image job again");
} }
logger.log(`Lost connection to ${server}, attempting to reconnect...`);
this.connections.delete(server);
//this.connect(server);
}); });
this.connections.push(connection); this.connections.set(server, connection);
resolve(); resolve();
}); });
}; };
exports.disconnect = async () => { exports.disconnect = async () => {
for (const connection of this.connections) { for (const connection of this.connections.values()) {
connection.destroy(); connection.close();
} }
for (const uuid of Object.keys(this.jobs)) { for (const uuid of Object.keys(this.jobs)) {
this.jobs[uuid].event.emit("error", "Job ended prematurely (not really an error; just run your image job again)"); this.jobs[uuid].event.emit("error", "Job ended prematurely (not really an error; just run your image job again)");
delete this.jobs[uuid]; delete this.jobs[uuid];
} }
this.connections = []; this.connections.clear();
return; return;
}; };
const getIdeal = () => { const getIdeal = () => {
return new Promise((resolve, reject) => { return new Promise((resolve, reject) => {
let serversLeft = this.connections.length; let serversLeft = this.connections.size;
if (serversLeft === 0) {
for (const server of this.servers) {
this.connect(server).catch(e => {
logger.error(e);
});
}
serversLeft = this.connections.size;
}
const idealServers = []; const idealServers = [];
const timeout = setTimeout(async () => { const timeout = setTimeout(async () => {
try { try {
const server = await chooseServer(idealServers); const server = await chooseServer(idealServers);
resolve(this.connections.find(val => val.remoteAddress === server.addr)); resolve({ addr: server.addr, sock: this.connections.get(server.addr) });
} catch (e) { } catch (e) {
reject(e); reject(e);
} }
}, 5000); }, 5000);
for (const connection of this.connections) { for (const address of this.connections.keys()) {
if (!connection.remoteAddress) { const connection = this.connections.get(address);
if (connection.readyState !== 1) {
serversLeft--; serversLeft--;
continue; continue;
} }
fetch(`http://${connection.remoteAddress}:8081/status`).then(statusRequest => statusRequest.text()).then((status) => { fetch(`http://${address}:8080/status`).then(statusRequest => statusRequest.text()).then((status) => {
serversLeft--; serversLeft--;
idealServers.push({ idealServers.push({
addr: connection.remoteAddress, addr: address,
load: parseInt(status) load: parseInt(status)
}); });
return; return;
@ -153,7 +165,7 @@ const getIdeal = () => {
if (!serversLeft) { if (!serversLeft) {
clearTimeout(timeout); clearTimeout(timeout);
const server = await chooseServer(idealServers); const server = await chooseServer(idealServers);
resolve(this.connections.find(val => val.remoteAddress === server.addr)); resolve({ addr: server.addr, sock: this.connections.get(server.addr) });
} }
}).catch(e => { }).catch(e => {
if (e.code === "ECONNREFUSED") { if (e.code === "ECONNREFUSED") {
@ -166,7 +178,7 @@ const getIdeal = () => {
if (!serversLeft) { if (!serversLeft) {
clearTimeout(timeout); clearTimeout(timeout);
chooseServer(idealServers).then(server => { chooseServer(idealServers).then(server => {
resolve(this.connections.find(val => val.remoteAddress === server.addr)); resolve({ addr: server.addr, sock: this.connections.get(server.addr) });
}).catch(e => reject(e)); }).catch(e => reject(e));
} }
}); });
@ -175,30 +187,10 @@ const getIdeal = () => {
const start = (object, num) => { const start = (object, num) => {
return getIdeal().then(async (currentServer) => { return getIdeal().then(async (currentServer) => {
const data = Buffer.concat([Buffer.from([0x01 /* queue job */]), Buffer.from(num.length.toString()), Buffer.from(num), Buffer.from(JSON.stringify(object))]); const data = Buffer.concat([Buffer.from([0x01 /* queue job */]), Buffer.from(num.length.toString()), Buffer.from(num), Buffer.from(JSON.stringify(object))]);
return new Promise((resolve, reject) => { return new Promise((resolve) => {
if (currentServer.destroyed) { currentServer.sock.send(data, () => {
logger.log(`Lost connection to ${currentServer.remoteAddress}, attempting to reconnect...`); resolve(currentServer.addr);
currentServer.connect(8080, currentServer.remoteAddress, () => {
const res = start(object, num);
reject(res); // this is done to differentiate the result from a step
}); });
} else {
currentServer.write(data, (err) => {
if (err) {
if (err.code === "EPIPE") {
logger.log(`Lost connection to ${currentServer.remoteAddress}, attempting to reconnect...`);
currentServer.connect(8080, currentServer.remoteAddress, () => {
const res = start(object, num);
reject(res); // this is done to differentiate the result from a step
});
} else {
reject(err);
}
} else {
resolve(currentServer.remoteAddress);
}
});
}
}); });
}).catch((result) => { }).catch((result) => {
throw result; throw result;