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use sqlx::migrate::MigrateDatabase;
use std::time::Instant;
use tokio;
mod graph;
mod geng;
use crate::geng::GengIterator;
mod compute;
#[tokio::main]
async fn main() -> Result<(), sqlx::Error> {
dotenv::dotenv().ok();
let database_url =
std::env::var("DATABASE_URL").expect("Expected DATABASE_URL in env");
if !sqlx::Sqlite::database_exists(&database_url).await? {
sqlx::Sqlite::create_database(&database_url).await?;
}
let db = sqlx::SqlitePool::connect(&database_url).await?;
let _ = sqlx::query!(
"CREATE TABLE IF NOT EXISTS graphs (g6 VARCHAR NOT NULL, ind_dom INT NOT NULL, forced_geod INT NOT NULL);"
)
.execute(&db)
.await;
let gi = GengIterator::new(9);
let start = Instant::now();
const BATCH_SIZE: usize = 10000;
loop {
let graphs = gi.take(BATCH_SIZE);
let tasks: Vec<_> = graphs
.map(|g| {
let db = db.clone();
tokio::spawn(async move {
let (g6, ind_dom, fg) = compute::dominating_numbers(g).await;
let ind_dom = ind_dom.unwrap_or(0);
let fg = fg.unwrap_or(0);
let _ = sqlx::query!(
"INSERT INTO graphs (g6, ind_dom, forced_geod) VALUES (?, ?, ?);",
g6, ind_dom, fg
).execute(&db).await;
})
})
.collect();
let part = futures::future::join_all(tasks).await;
if part.len() < BATCH_SIZE {
break;
}
}
let elapsed = start.elapsed();
let time = elapsed.as_nanos();
println!("Time elapsed: {}s", time as f64 / 1e9);
Ok(())
}
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