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index.js
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const os = require('os');
const pty = require('node-pty');
//const pty = require('@cdktf/node-pty-prebuilt-multiarch');
const git = require('isomorphic-git');
const http = require('isomorphic-git/http/node');
const Http = require("http")
const path = require('path');
const fs = require("fs");
const tar = require('tar');
const { createServer } = require("http");
const { Server } = require("socket.io");
const { io } = require("socket.io-client");
const term = require( 'terminal-kit' ).terminal;
const Downloader = require("nodejs-file-downloader");
const semver = require('semver');
//const _7z = require('7zip-min');
const axios = require('axios')
const platform = os.platform()
const shell = platform === 'win32' ? 'powershell.exe' : 'bash';
const L = require("./llama")
const A = require("./alpaca")
const TorrentDownloader = require("./torrent")
const exists = s => new Promise(r=>fs.access(s, fs.constants.F_OK, e => r(!e)))
const escapeNewLine = (platform, arg) => platform === 'win32' ? arg.replaceAll(/\n/g, "\\n").replaceAll(/\r/g, "\\r") : arg
const escapeDoubleQuotes = (platform, arg) => platform === 'win32' ? arg.replaceAll(/"/g, '`"') : arg.replaceAll(/"/g, '\\"')
const stripAnsi = (str) => {
const pattern = [
'[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]+)*|[a-zA-Z\\d]+(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)',
'(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-nq-uy=><~]))'
].join('|');
const regex = new RegExp(pattern, 'g')
return str.replace(regex, '');
}
const winEscape = (str) => {
return str
.replaceAll(/\\n/g, "\n")
.replaceAll(/\\r/g, "\r")
.replaceAll(/\\t/g, "\t")
.replaceAll(/\\b/g, "\b")
.replaceAll(/\\f/g, "\f")
.replaceAll(/\\/g, "")
}
class Dalai {
constructor(home) {
////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
// 1. manually set llama.cpp home
// 2. otherwise store llama.cpp at ~/llama.cpp
//
// # NOTE
// Could have used process.cwd() (The current execution directory) to download llama.cpp
// but this makes it cumbersome as you try to build multiple apps, because by default Dalai client will
// look for the current execution directory for llama.cpp.
// It's simpler to set the ~/llama.cpp as the default directory and use that path as the single source
// of truth and let multiple apps all connect to that path
// Otherwise if you want to customize the path you can just pass in the "home" attribute to manually set it.
//
////////////////////////////////////////////////////////////////////////////////////////////////////////////
this.home = home ? path.resolve(home) : path.resolve(os.homedir(), "dalai")
try {
console.log("mkdir", this.home)
fs.mkdirSync(this.home, { recursive: true })
} catch (e) {
console.log("E", e)
}
this.torrent = new TorrentDownloader()
this.config = {
name: 'xterm-color',
cols: 1000,
rows: 30,
}
this.cores = {
llama: new L(this),
alpaca: new A(this),
}
}
htmlencode (str) {
let encodedStr = '';
for (let i = 0; i < str.length; i++) {
let charCode = str.charCodeAt(i);
if (charCode < 128) {
// ASCII characters
switch (str[i]) {
case '<': encodedStr += '<'; break;
case '>': encodedStr += '>'; break;
case '&': encodedStr += '&'; break;
case '"': encodedStr += '"'; break;
case '\'': encodedStr += '''; break;
case '\n': encodedStr += '<br>'; break;
case '\r': break; // ignore
case '\t': encodedStr += ' '; break;
case '\b': encodedStr += ' '; break;
case '\f': encodedStr += ' '; break;
default: encodedStr += String.fromCharCode(charCode); break;
}
} else {
// Non-ASCII characters
encodedStr += "&#" + charCode + ";";
}
}
return encodedStr;
}
down(url, dest, headers) {
return new Promise((resolve, reject) => {
const task = path.basename(dest)
this.startProgress(task)
axios({
url,
method: 'GET',
responseType: 'stream',
maxContentLength: Infinity,
headers,
onDownloadProgress: progressEvent => {
const progress = (progressEvent.loaded / progressEvent.total) * 100;
this.progress(task, progress)
}
}).then(response => {
const writer = fs.createWriteStream(dest);
response.data.pipe(writer);
writer.on('finish', () => {
this.progressBar.update(1);
term("\n")
resolve()
});
}).catch(error => {
reject(error)
});
})
}
async python () {
// install self-contained python => only for windows for now
// 1. download
// 2. unzip
const filename = "cpython-3.10.9+20230116-x86_64-pc-windows-msvc-shared-install_only.tar.gz"
const task = "downloading self contained python"
const downloader = new Downloader({
url: `https://github.com/indygreg/python-build-standalone/releases/download/20230116/${filename}`,
directory: this.home,
onProgress: (percentage, chunk, remainingSize) => {
this.progress(task, percentage)
},
});
try {
await this.startProgress(task)
await downloader.download();
} catch (error) {
console.log(error);
}
this.progressBar.update(1);
console.log("extracting python")
await tar.x({
file: path.resolve(this.home, filename),
C: this.home,
strict: true
})
console.log("cleaning up temp files")
await fs.promises.rm(path.resolve(this.home, filename))
}
// async mingw() {
// const mingw = "https://github.com/niXman/mingw-builds-binaries/releases/download/12.2.0-rt_v10-rev2/x86_64-12.2.0-release-win32-seh-msvcrt-rt_v10-rev2.7z"
// const downloader = new Downloader({
// url: mingw,
// directory: this.home,
// onProgress: (percentage, chunk, remainingSize) => {
// this.progress("download mingw", percentage)
// },
// });
// try {
// await this.startProgress("download mingw")
// await downloader.download();
// } catch (error) {
// console.log(error);
// }
// this.progressBar.update(1);
// await new Promise((resolve, reject) => {
// _7z.unpack(path.resolve(this.home, "x86_64-12.2.0-release-win32-seh-msvcrt-rt_v10-rev2.7z"), this.home, (err) => {
// if (err) {
// reject(err)
// } else {
// resolve()
// }
// })
// })
// console.log("cleaning up temp files")
// await fs.promises.rm(path.resolve(this.home, "x86_64-12.2.0-release-win32-seh-msvcrt-rt_v10-rev2.7z"))
// }
async query(req, cb) {
console.log(`> query:`, req)
if (req.method === "installed") {
let models = await this.installed()
for(let model of models) {
cb(model)
}
cb('\n\n<end>')
return
}
if (req.prompt && req.prompt.startsWith("/")) {
try {
const mod = require(`./cmds/${req.prompt.slice(1)}`)
if (mod) {
mod(this)
return
}
} catch (e) {
console.log("require log", e)
}
}
if (!req.prompt) {
return
}
let [Core, Model] = req.model.split(".")
Model = Model.toUpperCase()
console.log( { Core, Model } )
let o = {
seed: req.seed || -1,
threads: req.threads || 8,
n_predict: req.n_predict || 128,
model: `models/${Model || "7B"}/ggml-model-q4_0.bin`,
}
let e = await exists(path.resolve(this.home, Core, "models", Model))
if (!e) {
cb(`File does not exist: ${Model}. Try "dalai ${Core} get ${Model}" first.`)
return
}
if (req.top_k) o.top_k = req.top_k
if (req.top_p) o.top_p = req.top_p
if (req.temp) o.temp = req.temp
if (req.batch_size) o.batch_size = req.batch_size
if (req.repeat_last_n) o.repeat_last_n = req.repeat_last_n
if (req.repeat_penalty) o.repeat_penalty = req.repeat_penalty
if (typeof req.interactive !== "undefined") o.interactive = req.interactive
let chunks = []
for(let key in o) {
chunks.push(`--${key} ${escapeDoubleQuotes(platform, o[key].toString())}`)
}
const escaped = escapeNewLine(platform, req.prompt)
const prompt = `"${escapeDoubleQuotes(platform, escaped)}"`
chunks.push(`-p ${prompt}`)
const main_bin_path = platform === "win32" ? path.resolve(this.home, Core, "build", "Release", "main") : path.resolve(this.home, Core, "main")
this.sessionBuffer = "";
this.bufferStarted = false;
if (req.full) {
await this.exec(`${main_bin_path} ${chunks.join(" ")}`, this.cores[Core].home, cb)
} else {
const startpattern = /.*sampling parameters:.*/g
const endpattern = /.*mem per token.*/g
let started = req.debug
let ended = false
let writeEnd = !req.skip_end
await this.exec(`${main_bin_path} ${chunks.join(" ")}`, this.cores[Core].home, (proc, msg) => {
if (endpattern.test(msg)) ended = true
if (started && !ended) {
this.buffer(req, msg, cb)
} else if (ended && writeEnd) {
cb('\n\n<end>')
writeEnd = false
}
if (startpattern.test(msg)) started = true
})
}
}
buffer(req, msg, cb) {
if (!this.queue) this.queue = []
if (platform === "win32") {
for(let i=0;i<msg.length; i++) {
if (msg[i] === "\\") {
this.queueActive = true
// start pushing to buffer
this.queue.push(msg[i]);
} else {
// otherwise flush
this.queue.push(msg[i])
let queueContent = this.queue.join("")
if (!this.bufferStarted && ["\n", "\b", "\f", "\r", "\t"].includes(queueContent)) {
// if the buffer hasn't started and incoming tokens are whitespaces, ignore
} else {
if (req.html) {
cb(this.htmlencode(winEscape(queueContent)))
} else {
cb(winEscape(queueContent))
}
this.bufferStarted = true
}
this.queue = []
this.queueActive = false
}
}
} else {
if (req.html) {
cb(this.htmlencode(msg))
} else {
cb(msg)
}
}
}
async uninstall(core, ...models) {
if (models.length > 0) {
// delete the model folder
const modelsPath = path.resolve(this.home, core, "models")
for(let model of models) {
const modelPath = path.resolve(modelsPath, model)
console.log("rm", modelPath)
await fs.promises.rm(modelPath, { recursive: true, force: true }).catch((e) => {
console.log("rm", modelPath, e)
})
}
}
}
async install(core, ...models) {
let engine = this.cores[core]
const venv_path = path.join(this.home, "venv")
let ve = await exists(venv_path)
if (!ve) {
await this.setup()
}
// temporary
let models_path = path.resolve(engine.home, "models")
let temp_path = path.resolve(this.home, "tmp")
let temp_models_path = path.resolve(temp_path, "models")
await fs.promises.mkdir(temp_path, { recursive: true }).catch((e) => { console.log("1", e) })
// 1. move the models folder to ../tmp
await fs.promises.rename(models_path, temp_models_path).catch((e) => { console.log("2", e) })
// 2. wipe out the folder
await fs.promises.rm(engine.home, { recursive: true }).catch((e) => { console.log("3", e) })
// 3. install engine
await this.add(core)
// 4. move back the files inside /tmp
await fs.promises.rename(temp_models_path, models_path).catch((e) => { console.log("4", e) })
// next add the models
let res = await this.cores[core].add(...models)
return res
}
async installed() {
// get cores
const modelNames = []
for(let core of ["alpaca", "llama"]) {
const modelsPath = path.resolve(this.home, core, "models")
console.log("modelsPath", modelsPath)
let modelFolders = []
try {
modelFolders = (await fs.promises.readdir(modelsPath, { withFileTypes: true }))
.filter(dirent => dirent.isDirectory())
.map(dirent => dirent.name)
} catch (e) {
}
console.log({ modelFolders })
for(let modelFolder of modelFolders) {
let e = await exists(path.resolve(modelsPath, modelFolder, 'ggml-model-q4_0.bin'))
if (e) {
modelNames.push(`${core}.${modelFolder}`)
console.log("exists", modelFolder)
}
}
}
return modelNames
}
async add (core) {
/**************************************************************************************************************
*
* 2. Download Core
*
**************************************************************************************************************/
let engine = this.cores[core]
let e = await exists(path.resolve(engine.home));
console.log("mkdir", path.resolve(engine.home))
await fs.promises.mkdir(path.resolve(engine.home), { recursive: true }).catch((e) => {
console.log("ERROR" ,e)
})
try {
console.log("try fetching", engine.home, engine.url)
await git.pull({ fs, http, dir: engine.home, url: engine.url })
} catch (e) {
console.log("[E] Pull", e)
try {
console.log("try cloning", engine.home, engine.url)
await git.clone({ fs, http, dir: engine.home, url: engine.url })
} catch (e2) {
console.log("[E] Clone", e2)
}
}
console.log("next", core, engine.make);
/**************************************************************************************************************
*
* 4. Compile & Build
* - make: linux + mac
* - cmake: windows
*
**************************************************************************************************************/
await engine.make()
}
async setup() {
let success;
/**************************************************************************************************************
*
* 1. Validate
*
**************************************************************************************************************/
// Check if current version is greater than or equal to 18
const node_version = process.version;
if (!semver.gte(node_version, '18.0.0')) {
throw new Error("outdated Node version, please install Node 18 or newer")
}
/**************************************************************************************************************
*
* 3. Download Global Dependencies
* - Python (windows only)
* - build-essential (linux only)
* - virtualenv
* - torch, numpy, etc.
*
**************************************************************************************************************/
// 3.1. Python: Windows doesn't ship with python, so install a dedicated self-contained python
if (platform === "win32") {
await this.python()
}
const root_python_paths = (platform === "win32" ? ["python3", "python", path.resolve(this.home, "python", "python.exe")] : ["python3", "python"])
const root_pip_paths = (platform === "win32" ? ["pip3", "pip", path.resolve(this.home, "python", "python -m pip")] : ["pip3", "pip"])
// 3.2. Build tools
if (platform === "linux") {
// ubuntu debian
success = await this.exec("apt-get install build-essential python3-venv -y")
if (!success) {
// fefdora
success = await this.exec("dnf install make automake gcc gcc-c++ kernel-devel python3-virtualenv -y")
}
} else {
// for win32 / darwin
for(let root_pip_path of root_pip_paths) {
success = await this.exec(`${root_pip_path} install --user virtualenv`)
if (success) {
break;
}
success = await this.exec(`${root_pip_path} install virtualenv`)
if (success) {
break;
}
}
if (!success) {
throw new Error("cannot install virtualenv")
}
}
// 3.3. virtualenv
const venv_path = path.join(this.home, "venv")
for(let root_python_path of root_python_paths) {
console.log("trying with", root_python_path)
let code = await this.exec(`${root_python_path} -m venv ${venv_path}`)
console.log({ code })
}
/*
if (!success) {
throw new Error("cannot execute python3 or python")
return
}
*/
// 3.4. Python libraries
const pip_path = platform === "win32" ? path.join(venv_path, "Scripts", "pip.exe") : path.join(venv_path, "bin", "pip")
const python_path = platform == "win32" ? path.join(venv_path, "Scripts", "python.exe") : path.join(venv_path, 'bin', 'python')
// cmake (only on windows. the rest platforms use make)
if (platform === "win32") {
success = await this.exec(`${pip_path} install cmake`)
if (!success) {
throw new Error("cmake installation failed")
return
}
}
success = await this.exec(`${pip_path} install --upgrade pip setuptools wheel`)
if (!success) {
success = await this.exec(`${pip_path} install --user --upgrade pip setuptools wheel`)
if (!success) {
throw new Error("pip setuptools wheel upgrade failed")
return
}
}
success = await this.exec(`${pip_path} install torch torchvision torchaudio sentencepiece numpy`)
//success = await this.exec(`${pip_path} install torch torchvision torchaudio sentencepiece numpy wget`)
if (!success) {
success = await this.exec(`${pip_path} install --user torch torchvision torchaudio sentencepiece numpy`)
if (!success) {
throw new Error("dependency installation failed")
return
}
}
}
serve(port, options) {
const httpServer = createServer();
const io = new Server(httpServer)
io.on("connection", (socket) => {
socket.on('request', async (req) => {
await this.query(req, (str) => {
io.emit("result", { response: str, request: req })
})
});
});
httpServer.listen(port)
}
http(httpServer) {
const io = new Server(httpServer)
io.on("connection", (socket) => {
socket.on('request', async (req) => {
req.models = Array.from(new Set(req.models))
await this.query(req, (str) => {
io.emit("result", { response: str, request: req })
})
});
});
}
async request(req, cb) {
if (req.url) {
await this.connect(req, cb)
} else {
await this.query(req, cb)
}
}
connect(req, cb) {
const socket = io(req.url)
socket.emit('request', req)
socket.on('response', cb)
socket.on('error', function(e) {
throw e
});
}
exec(cmd, cwd, cb) {
return new Promise((resolve, reject) => {
try {
const config = Object.assign({}, this.config)
if (cwd) {
config.cwd = path.resolve(cwd)
}
console.log(`exec: ${cmd} in ${config.cwd}`)
this.ptyProcess = pty.spawn(shell, [], config)
this.ptyProcess.onData((data) => {
if (cb) {
cb(this.ptyProcess, stripAnsi(data))
} else {
process.stdout.write(data);
}
});
this.ptyProcess.onExit((res) => {
if (res.exitCode === 0) {
// successful
resolve(true)
} else {
// something went wrong
resolve(false)
}
});
if (platform === "win32") {
this.ptyProcess.write(`[System.Console]::OutputEncoding=[System.Console]::InputEncoding=[System.Text.Encoding]::UTF8; ${cmd}\r`)
} else {
this.ptyProcess.write(`${cmd}\r`)
}
this.ptyProcess.write("exit\r")
} catch (e) {
console.log("caught error", e)
this.ptyProcess.kill()
// ptyProcess.write("exit\r")
}
})
}
progress(task, percent) {
this.progressBar.update(percent/100);
//if (percent >= 100) {
// setTimeout(() => {
// term("\n")
// }, 200)
//}
}
startProgress(title) {
this.progressBar = term.progressBar({
width: 120,
title,
eta: true ,
percent: true
});
}
}
module.exports = Dalai