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what2watch
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Clean up the import code. 

Make things as batch-y as possible; add timers; tweak the db.
This commit is contained in:
Joe Ardent 2023-07-08 13:16:05 -07:00
parent c5993f57ee
commit 0e016552ab
6 changed files with 128 additions and 149 deletions
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7
migrations/20230426221940_init.up.sql
View File

@ -31,11 +31,10 @@ create table if not exists watches (
create table if not exists witch_watch (
witch blob not null,
watch blob not null,
party blob, -- list of witch IDs, but we can also scan for friends that want to watch the same thing
priority int, -- 1-5 how much do you want to watch it
public boolean not null,
watched boolean not null,
when_added int,
public boolean not null default true,
watched boolean not null default false,
when_added int not null default (unixepoch()),
when_watched int,
last_updated int not null default (unixepoch()),
foreign key (witch) references witches (id) on delete cascade on update no action,

13
src/bin/import_omega.rs
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@ -24,5 +24,16 @@ async fn main() {
let ww_db = get_db_pool().await;
add_omega_watches(&ww_db, &movie_db).await;
let start = std::time::Instant::now();
add_omega_watches(&ww_db, &movie_db).await.unwrap();
let end = std::time::Instant::now();
let dur = (end - start).as_secs_f32();
let rows: i32 = sqlx::query_scalar("select count(*) from watches")
.fetch_one(&ww_db)
.await
.unwrap();
println!("Added {rows} movies in {dur} seconds");
}

92
src/bin/import_users.rs
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@ -1,7 +1,7 @@
use std::{ffi::OsString, time::Duration};
use clap::Parser;
use rand::{rngs::ThreadRng, seq::SliceRandom, thread_rng, Rng};
use rand::{seq::SliceRandom, thread_rng, Rng};
use rand_distr::Normal;
use sqlx::{
sqlite::{SqliteConnectOptions, SqlitePoolOptions},
@ -11,30 +11,10 @@ use tokio::task::JoinSet;
use tokio_retry::Retry;
use witch_watch::{
get_db_pool,
import_utils::{add_omega_watches, add_user, add_watch_quests},
DbId, WatchQuest,
import_utils::{add_omega_watches, add_users, add_watch_quests},
DbId, User, WatchQuest,
};
#[derive(Debug, Parser)]
struct Cli {
/// path to the movie database
#[clap(long = "database", short)]
pub db_path: OsString,
/// number of users to create
#[clap(long, short, default_value_t = 1000)]
pub users: usize,
/// expected gaussian value for number of movies per use
#[clap(long = "movies", short, default_value_t = 100)]
pub movies_per_user: u32,
/// path to the dictionary to be used for usernames [default:
/// /usr/share/dict/words]
#[clap(long, short)]
pub words: Option<OsString>,
}
#[tokio::main]
async fn main() {
let cli = Cli::parse();
@ -52,21 +32,29 @@ async fn main() {
let opts = SqliteConnectOptions::new().filename(&path).read_only(true);
let movie_db = SqlitePoolOptions::new()
.idle_timeout(Duration::from_secs(90))
.idle_timeout(Duration::from_secs(3))
.connect_with(opts)
.await
.expect("could not open movies db");
let ww_db = get_db_pool().await;
let users = &gen_users(num_users, &words, &ww_db).await;
let movies = &add_omega_watches(&ww_db, &movie_db).await;
let movies = &add_omega_watches(&ww_db, &movie_db).await.unwrap();
let rng = &mut thread_rng();
let normal = Normal::new(mpu, mpu / 10.0).unwrap();
let start = std::time::Instant::now();
for &user in users {
add_quests(user, movies, &ww_db, rng, normal).await;
}
let end = std::time::Instant::now();
let rows: i32 = sqlx::query_scalar("select count(*) from witch_watch")
.fetch_one(&ww_db)
.await
.unwrap();
let dur = (end - start).as_secs_f32();
println!("Added {rows} quests in {dur} seconds");
}
//-************************************************************************
@ -90,28 +78,30 @@ async fn gen_users(num: usize, words: &[&str], pool: &SqlitePool) -> Vec<DbId> {
let username = format!("{n1}_{n2}{nn}");
let displayname = Some(format!("{n1} {n2}"));
let email = Some(format!("{username}@{email_domain}"));
let id = add_user(
pool,
&username,
displayname.as_deref(),
email.as_deref(),
None,
)
.await;
users.push(id);
let id = DbId::new();
let user = User {
id,
username,
displayname,
email,
last_seen: None,
pwhash: "can't password this".to_string(),
};
users.push(user);
}
add_users(pool, &users).await.unwrap();
users
users.into_iter().map(|u| u.id).collect()
}
//-************************************************************************
// batch add quests
//-************************************************************************
async fn add_quests(
async fn add_quests<R: Rng>(
user: DbId,
movies: &[DbId],
ww_db: &SqlitePool,
rng: &mut ThreadRng,
rng: &mut R,
normal: Normal<f32>,
) {
let mut tasks = JoinSet::new();
@ -119,17 +109,17 @@ async fn add_quests(
let quests: Vec<WatchQuest> = movies
.choose_multiple(rng, num_movies)
.cloned()
.map(|movie| WatchQuest {
.map(|watch| WatchQuest {
user,
watch: movie,
watch,
is_public: true,
already_watched: false,
})
.collect();
let retry_strategy = tokio_retry::strategy::ExponentialBackoff::from_millis(100)
let retry_strategy = tokio_retry::strategy::ExponentialBackoff::from_millis(10)
.map(tokio_retry::strategy::jitter)
.take(4);
.take(3);
let db = ww_db.clone();
tasks.spawn(async move {
@ -146,3 +136,23 @@ async fn add_quests(
// get the stragglers
while (tasks.join_next().await).is_some() {}
}
#[derive(Debug, Parser)]
pub struct Cli {
/// path to the movie database
#[clap(long = "database", short)]
pub db_path: OsString,
/// number of users to create
#[clap(long, short, default_value_t = 1000)]
pub users: usize,
/// expected gaussian value for number of movies per use
#[clap(long = "movies", short, default_value_t = 100)]
pub movies_per_user: u32,
/// path to the dictionary to be used for usernames [default:
/// /usr/share/dict/words]
#[clap(long, short)]
pub words: Option<OsString>,
}

161
src/import_utils.rs
View File

@ -1,15 +1,6 @@
use std::sync::Arc;
use sqlx::{query_scalar, SqlitePool};
use sqlx::{query, query_scalar, SqlitePool};
use tokio::task::JoinSet;
use tokio_retry::Retry;
use crate::{
db_id::DbId,
util::year_to_epoch,
watches::handlers::{add_new_watch_impl, add_watch_quest_impl},
ShowKind, Watch, WatchQuest,
};
use crate::{db_id::DbId, util::year_to_epoch, ShowKind, User, Watch, WatchQuest};
const USER_EXISTS_QUERY: &str = "select count(*) from witches where id = $1";
@ -20,6 +11,8 @@ const MOVIE_QUERY: &str = "select * from movies order by random() limit 10000";
//-************************************************************************
const OMEGA_ID: u128 = u128::MAX;
const BULK_INSERT: usize = 2_000;
#[derive(Debug, sqlx::FromRow, Clone)]
pub struct ImportMovieOmega {
pub title: String,
@ -58,64 +51,40 @@ impl From<&ImportMovieOmega> for Watch {
//-************************************************************************
// utility functions for building CLI tools, currently just for benchmarking
//-************************************************************************
pub async fn add_watch_omega(db_pool: &SqlitePool, movie: &ImportMovieOmega) -> Result<DbId, ()> {
let watch: Watch = movie.into();
if add_new_watch_impl(db_pool, &watch, None).await.is_ok() {
Ok(watch.id)
} else {
eprintln!("failed to add \"{}\"", watch.title);
Err(())
}
}
pub async fn add_watch_quest(db_pool: &SqlitePool, quest: WatchQuest) -> Result<(), ()> {
if add_watch_quest_impl(db_pool, &quest).await.is_ok() {
Ok(())
} else {
eprintln!("failed to add {:?}", quest.id());
Err(())
}
}
pub async fn add_watch_quests(pool: &SqlitePool, quests: &[WatchQuest]) -> Result<(), ()> {
let mut builder =
sqlx::QueryBuilder::new("insert into witch_watch (witch, watch, public, watched) ");
builder.push_values(quests.iter(), |mut b, quest| {
b.push_bind(quest.user)
.push_bind(quest.watch)
.push_bind(quest.is_public)
.push_bind(quest.already_watched);
let mut builder = sqlx::QueryBuilder::new("insert into witch_watch (witch, watch) ");
builder.push_values(quests, |mut b, quest| {
let user = quest.user;
let watch = quest.watch;
//eprintln!("{user}, {watch}");
b.push_bind(user).push_bind(watch);
});
let q = builder.build();
q.execute(pool).await.map_err(|_| ())?;
q.execute(pool).await.map_err(|e| {
dbg!(e);
})?;
Ok(())
}
pub async fn add_user(
db_pool: &SqlitePool,
username: &str,
displayname: Option<&str>,
email: Option<&str>,
id: Option<DbId>,
) -> DbId {
let pwhash = "you shall not password";
let id: DbId = id.unwrap_or_else(DbId::new);
if query(crate::signup::CREATE_QUERY)
.bind(id)
.bind(username)
.bind(displayname)
.bind(email)
.bind(pwhash)
.execute(db_pool)
.await
.is_err()
{
eprintln!("failed to add user \"{username}\"");
}
id
pub async fn add_users(db_pool: &SqlitePool, users: &[User]) -> Result<(), ()> {
let mut builder =
sqlx::QueryBuilder::new("insert into witches (id, username, displayname, email, pwhash) ");
builder.push_values(users.iter(), |mut b, user| {
b.push_bind(user.id)
.push_bind(&user.username)
.push_bind(&user.displayname)
.push_bind(&user.email)
.push_bind(&user.pwhash);
});
let q = builder.build();
q.execute(db_pool).await.map_err(|_| ())?;
Ok(())
}
pub async fn add_omega_watches(ww_db: &SqlitePool, movie_db: &SqlitePool) -> Vec<DbId> {
pub async fn add_omega_watches(ww_db: &SqlitePool, movie_db: &SqlitePool) -> Result<Vec<DbId>, ()> {
ensure_omega(ww_db).await;
let movies: Vec<ImportMovieOmega> = sqlx::query_as(MOVIE_QUERY)
@ -123,55 +92,45 @@ pub async fn add_omega_watches(ww_db: &SqlitePool, movie_db: &SqlitePool) -> Vec
.await
.unwrap();
let mut set = JoinSet::new();
let movie_set = Vec::with_capacity(10_000);
let movie_set = Arc::new(std::sync::Mutex::new(movie_set));
let mut ids = Vec::with_capacity(10_000);
let omega: DbId = OMEGA_ID.into();
let retry_strategy = tokio_retry::strategy::ExponentialBackoff::from_millis(100)
.map(tokio_retry::strategy::jitter)
.take(4);
for movies in movies.as_slice().chunks(BULK_INSERT) {
let mut builder = sqlx::QueryBuilder::new(
"insert into watches (id, kind, title, length, release_date, added_by) ",
);
for movie in movies {
let db = ww_db.clone();
let title = movie.title.as_str();
let year = movie.year.clone().unwrap();
let len = movie.length.clone().unwrap();
let retry_strategy = retry_strategy.clone();
let movie_set = movie_set.clone();
builder.push_values(movies, |mut b, movie| {
let id = DbId::new();
ids.push(id);
let title = &movie.title;
let key = format!("{title}{year}{len}");
set.spawn(async move {
(
key,
Retry::spawn(retry_strategy, || async {
if let Ok(id) = add_watch_omega(&db, &movie).await {
let mut mset = movie_set.lock().unwrap();
mset.push(id);
Ok(())
} else {
Err(())
}
})
.await,
)
b.push_bind(id)
.push_bind(ShowKind::Movie)
.push_bind(title)
.push_bind(movie.length.as_ref().and_then(|l| l.parse::<i64>().ok()))
.push_bind(year_to_epoch(movie.year.as_deref()))
.push_bind(omega);
});
let q = builder.build();
q.execute(ww_db).await.map_err(|_| ())?;
}
// stragglers
while (set.join_next().await).is_some() {}
let movies = movie_set.lock().unwrap().clone();
movies
Ok(ids)
}
pub async fn ensure_omega(db_pool: &SqlitePool) -> DbId {
if !check_omega_exists(db_pool).await {
add_user(
db_pool,
"The Omega User",
Some("I am the end of all watches."),
None,
Some(OMEGA_ID.into()),
)
.await;
let omega = User {
id: OMEGA_ID.into(),
username: "The Omega User".to_string(),
displayname: Some("I am the end of all watches".to_string()),
email: None,
last_seen: None,
pwhash: "you shall not password".to_string(),
};
add_users(db_pool, &[omega]).await.unwrap();
}
OMEGA_ID.into()
}

2
src/users.rs
View File

@ -20,7 +20,7 @@ pub struct User {
pub displayname: Option<String>,
pub email: Option<String>,
pub last_seen: Option<i64>,
pub(crate) pwhash: String,
pub pwhash: String,
}
impl Debug for User {

2
src/watches/handlers.rs
View File

@ -199,7 +199,7 @@ pub async fn post_add_watch_quest(
todo!()
}
pub async fn add_watch_quest_impl(pool: &SqlitePool, quest: &WatchQuest) -> Result<(), ()> {
pub async fn _add_watch_quest_impl(pool: &SqlitePool, quest: &WatchQuest) -> Result<(), ()> {
query(ADD_WITCH_WATCH_QUERY)
.bind(quest.user)
.bind(quest.watch)