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Add veb, the new V lang framework (TechEmpower#9717)
* Add veb. V lang default framework * Update Readme, config and so * set headers with a middleware to reduce code repetition --------- Co-authored-by: c-cesar <[email protected]>
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‎frameworks/V/veb/README.md‎

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# [veb](https://modules.vlang.io/veb.html) Benchmarking Test
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Veb is the default V language web framework. This test uses veb and V native ORM.
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### Test Type Implementation Source Code
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All tests in a 95 lines [main.v] and a html [template](fortunes.html)
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### Database
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PostgresQL
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## Test URLs
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### JSON
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http://localhost:8080/json
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### PLAINTEXT
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http://localhost:8080/plaintext
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### DB
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http://localhost:8080/db
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### QUERY
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http://localhost:8080/query?q=
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### UPDATE
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http://localhost:8080/update?queries=
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### FORTUNES
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http://localhost:8080/fortunes

‎frameworks/V/veb/benchmark_config.json‎

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{
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"framework": "veb",
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"tests": [
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{
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"default": {
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"json_url": "/json",
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"plaintext_url": "/plaintext",
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"db_url": "/db",
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"query_url": "/queries?q=",
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"fortune_url": "/fortunes",
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"update_url": "/update?q=",
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"port": 8080,
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"approach": "Realistic",
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"classification": "Fullstack",
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"database": "Postgres",
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"framework": "veb",
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"language": "V",
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"flavor": "None",
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"orm": "Micro",
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"platform": "None",
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"webserver": "None",
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"os": "Linux",
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"database_os": "Linux",
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"display_name": "veb",
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"notes": "",
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"versus": "None"
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}
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}
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]
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}

‎frameworks/V/veb/config.toml‎

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[framework]
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name = "veb"
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[main]
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urls.plaintext = "/plaintext"
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urls.json = "/json"
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urls.db = "/db"
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urls.query = "/queries?q="
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urls.update = "/update?q="
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urls.fortune = "/fortunes"
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approach = "Realistic"
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classification = "Fullstack"
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database = "Postgres"
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database_os = "Linux"
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os = "Linux"
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orm = "Micro"
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platform = "None"
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webserver = "None"
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versus = "None"

‎frameworks/V/veb/fortunes.html‎

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<!DOCTYPE html>
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<html>
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<head><title>Fortunes</title></head>
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<body>
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<table>
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<tr><th>id</th><th>message</th></tr>
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@for m in fortunes
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<tr><td>@m.id</td><td>@m.message</td></tr>
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@end
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</table>
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</body>
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</html>

‎frameworks/V/veb/main.v‎

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import veb
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import time
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import rand
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import db.pg
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pub fn (app &App) plaintext(mut ctx Context) veb.Result {
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s := 'Hello, World!'
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return ctx.text(s)
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}
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pub fn (app &App) json(mut ctx Context) veb.Result {
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obj := {'message': 'Hello, World!'}
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return ctx.json(obj)
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}
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struct World {
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id int @[primary; sql: serial]
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mut:
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randomnumber int
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}
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pub fn (app &App) db(mut ctx Context) veb.Result {
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r := rand.int_in_range(1, 10000) or { return ctx.text('rand error') }
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mut world := sql app.db {
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select from World where id == r
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} or { return ctx.text('db error') }
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return ctx.json(world.first())
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}
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pub fn (app &App) queries(mut ctx Context) veb.Result {
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mut q := ctx.query['q'].int()
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if q < 1 { q = 1 } else if q > 500 { q = 500 }
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mut world := []World{}
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for _ in 0..q {
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r := rand.int_in_range(1, 10000) or { return ctx.text('rand error') }
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world << sql app.db {
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select from World where id == r
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} or { return ctx.text('db error') }
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}
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return ctx.json(world)
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}
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pub fn (app &App) update(mut ctx Context) veb.Result {
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mut q := ctx.query['q'].int()
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if q < 1 { q = 1 } else if q > 500 { q = 500 }
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mut world := []World{}
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for _ in 0..q {
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r := rand.int_in_range(1, 10000) or { return ctx.text('rand error') }
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world << sql app.db {
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select from World where id == r
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} or { return ctx.text('db error') }
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world.last().randomnumber = rand.int_in_range(1, 10000) or { return ctx.text('rand error') }
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sql app.db {
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update World set randomnumber = world.last().randomnumber where id == world.last().id
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} or { return ctx.text('db error') }
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}
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return ctx.json(world)
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}
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struct Fortune {
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id int @[primary; sql: serial]
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message string
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}
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pub fn (app &App) fortunes(mut ctx Context) veb.Result {
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mut fortunes := sql app.db {
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select from Fortune
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} or { return ctx.text('db error') }
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fortunes.insert(0, Fortune{id: 0, message: 'Additional fortune added at request time.'})
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fortunes.sort(a.message < b.message)
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ctx.content_type = 'text/html; charset=utf-8'
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return $veb.html()
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}
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pub struct Context {
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veb.Context
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}
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pub struct App {
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veb.Middleware[Context]
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pub mut:
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db pg.DB
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}
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pub fn header(mut ctx Context) bool {
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ctx.set_header(.date, time.now().as_utc().custom_format('ddd, DD MMM YYYY HH:MM:ss') + ' GMT')
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ctx.set_header(.server, 'veb')
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return true
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}
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fn main() {
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mut app := &App{
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db: pg.connect(pg.Config{
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host: 'tfb-database'
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port: 5432
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user: 'benchmarkdbuser'
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password: 'benchmarkdbpass'
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dbname: 'hello_world'
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}) !
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}
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app.use(handler: header)
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veb.run[App, Context](mut app, 8080)
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}

‎frameworks/V/veb/run.sh‎

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#!/bin/sh
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for i in $(seq 0 $(nproc)); do
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taskset -c $i ./main &
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done
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wait

‎frameworks/V/veb/veb.dockerfile‎

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FROM thevlang/vlang:debian-dev
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RUN apt update && apt install -y libpq-dev
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WORKDIR /app
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COPY ./main.v run.sh fortunes.html ./
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RUN v -prod -cflags '-std=gnu11 -Wall -O3 -march=native -mtune=native -flto' main.v
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EXPOSE 8080
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CMD sh run.sh

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