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Cat /dev/Nulo 2023-04-20 12:58:13 -03:00
commit 4e7cbc55ad
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5
.gitignore vendored Normal file
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node_modules/
input*/
*.sqlite3
*.sqlite3-shm
*.sqlite3-wal

74
compress.js Normal file
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import load from "better-sqlite3";
import { createReadStream } from "node:fs";
import { readFile, readdir, rm, stat } from "node:fs/promises";
import { extname, join } from "node:path";
import { Writable } from "node:stream";
import { pipeline } from "node:stream/promises";
import { promisify } from "node:util";
// import * as brotli from "brotli";
import { brotliCompress, constants, createBrotliCompress } from "node:zlib";
const compress = promisify(brotliCompress);
const name = process.argv[2] || "./archive.sqlite3";
await rm(name, { force: true });
const db = load(name);
db.pragma("journal_mode = WAL");
db.exec("create table files(path string, content blob, compressed bool)");
db.exec("create unique index path on files(path)");
const insertStmt = db.prepare(
"insert into files(path, content, compressed) values(?, ?, ?)"
);
/**
* @param {string} parent
* @param {string} strip
*/
async function recurse(parent, strip) {
const dir = await readdir(parent, { withFileTypes: true });
await Promise.all(
dir.map(async (entry) => {
const realPath = join(parent, entry.name);
if (entry.name === "pack.js") {
debugger;
}
if (entry.isFile()) {
if (!realPath.startsWith(strip)) throw new Error("wtf");
const virtualPath = realPath.slice(strip.length);
const file = createReadStream(realPath);
const ext = extname(entry.name).toLowerCase();
if ([".html", ".css", ".js", ".svg", ".json"].includes(ext)) {
try {
const brotli = createBrotliCompress({
params: {
[constants.BROTLI_PARAM_MODE]: constants.BROTLI_MODE_TEXT,
[constants.BROTLI_PARAM_QUALITY]: constants.BROTLI_MIN_QUALITY,
[constants.BROTLI_PARAM_SIZE_HINT]: (await stat(realPath)).size,
},
});
pipeline(file, brotli);
const buffers = [];
for await (const data of brotli) {
buffers.push(data);
}
const finalBuffer = Buffer.concat(buffers);
insertStmt.run(virtualPath, finalBuffer, 1);
} catch (error) {
console.error(error);
}
} else if ([".gz", ".br"].includes(ext)) {
// nada
} else {
file.close();
insertStmt.run(virtualPath, await readFile(realPath), 0);
}
} else {
await recurse(realPath, strip);
}
})
);
}
await recurse("input/", "input");

22
package.json Normal file
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{
"name": "tofufirme",
"type": "module",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"better-sqlite3": "^8.3.0",
"brotli": "^1.3.3"
},
"devDependencies": {
"@types/better-sqlite3": "^7.6.4",
"@types/brotli": "^1.3.1",
"@types/node": "^18.15.12"
}
}

288
pnpm-lock.yaml Normal file
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lockfileVersion: '6.0'
dependencies:
better-sqlite3:
specifier: ^8.3.0
version: 8.3.0
brotli:
specifier: ^1.3.3
version: 1.3.3
devDependencies:
'@types/better-sqlite3':
specifier: ^7.6.4
version: 7.6.4
'@types/brotli':
specifier: ^1.3.1
version: 1.3.1
'@types/node':
specifier: ^18.15.12
version: 18.15.12
packages:
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dependencies:
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dev: true
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dependencies:
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requiresBuild: true
dependencies:
bindings: 1.5.0
prebuild-install: 7.1.1
dev: false
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dependencies:
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dev: false
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dependencies:
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inherits: 2.0.4
readable-stream: 3.6.2
dev: false
/brotli@1.3.3:
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dependencies:
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ieee754: 1.2.1
dev: false
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engines: {node: '>=10'}
dependencies:
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dependencies:
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dev: false

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readme.md Normal file
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# tofufirme [![justforfunnoreally.dev badge](https://img.shields.io/badge/justforfunnoreally-dev-9ff)](https://justforfunnoreally.dev)
![un tofu firme](https://labodeguitadelovalledor.cl/wp-content/uploads/2020/10/img_como_hacer_tofu_casero_32813_600_square-480x480.jpg)
un _proof of concept_ de un coso que guarda un sitio estático en una BD de sqlite3 con los archivos comprimidos con brotli, y otro coso que sirve el coso.
## ¿por qué?
porque la mayoría de los navegadores soportan brotli, y quizás no tiene tanto sentido guardar la versión descomprimida y la versión comprimida en gzip cuando la mayoría de los pedidos solo van a pedir la versión de brotli.
entonces si solo guardamos en brotli, podemos servir eso y _descomprimir en vivo_ si lx usuarix no soporta brotli (que, creo que la descompresión es más rápida que la compresión).
## ¿funciona?
este PoC funciona. [un sitio](https://keywords.sutty.nl) pesado en texto/HTML pero liviano en otros recursos pesa 79MB vs. 352MB (incluyendo .gz y .br).
## a ver...
```sh
pnpm install
# el sitio tiene que estar en input/
node compress.js output.sqlite3
node server.js output.sqlite3
```

45
server.js Normal file
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import { createServer } from "http";
import load from "better-sqlite3";
import * as brotli from "brotli";
const name = process.argv[2] || "./archive.sqlite3";
const db = load(name);
const getStmt = db.prepare(
"select content, compressed from files where path = ?"
);
const port = 8080;
createServer((req, res) => {
let url = req.url;
if (!url) throw new Error("wtf");
{
const indexQ = url.indexOf("?");
if (indexQ !== -1) url = url.slice(0, indexQ);
}
if (url.endsWith("/")) url += "index.html";
url = decodeURI(url);
// prettier-ignore
const r = /** @type {{content:Buffer, compressed:boolean}} */(getStmt.get(url));
if (!r) {
res.writeHead(404).end("not found");
return;
}
if (r.compressed) {
let encodings = req.headers["accept-encoding"];
if (encodings instanceof Array) encodings = encodings[0];
if (encodings) encodings = encodings.split(", ");
if (encodings?.includes("br")) {
res
.writeHead(200, {
"content-encoding": "br",
})
.end(r.content);
} else {
res.writeHead(200).end(brotli.decompress(r.content));
}
} else {
res.writeHead(200).end(r.content);
}
}).listen(port, () => console.debug(`Listening in ${port}`));

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tsconfig.json Normal file
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{
"compilerOptions": {
"target": "ESNext",
"useDefineForClassFields": true,
"module": "ESNext",
"moduleResolution": "nodenext",
"resolveJsonModule": true,
"allowJs": true,
"checkJs": true,
"strict": true,
"isolatedModules": true
}
}