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use sqlx::sqlite::SqlitePool;
use super::Snapshot;
use crate::{
channel::{self, repo::Provider as _},
event::{Heartbeat, repo::Provider as _},
message::repo::Provider as _,
name,
user::{self, repo::Provider as _},
};
pub struct Boot<'a> {
db: &'a SqlitePool,
}
impl<'a> Boot<'a> {
pub const fn new(db: &'a SqlitePool) -> Self {
Self { db }
}
pub async fn snapshot(&self) -> Result<Snapshot, Error> {
let mut tx = self.db.begin().await?;
let resume_point = tx.sequence().current().await?;
let heartbeat = Heartbeat::TIMEOUT;
let users = tx.users().all(resume_point).await?;
let channels = tx.channels().all(resume_point).await?;
let messages = tx.messages().all(resume_point).await?;
tx.commit().await?;
let users = users
.into_iter()
.filter_map(|user| user.as_of(resume_point))
.collect();
let channels = channels
.into_iter()
.filter_map(|channel| channel.as_of(resume_point))
.collect();
let messages = messages
.into_iter()
.filter_map(|message| message.as_of(resume_point))
.collect();
Ok(Snapshot {
resume_point,
heartbeat,
users,
channels,
messages,
})
}
}
#[derive(Debug, thiserror::Error)]
#[error(transparent)]
pub enum Error {
Name(#[from] name::Error),
Database(#[from] sqlx::Error),
}
impl From<user::repo::LoadError> for Error {
fn from(error: user::repo::LoadError) -> Self {
use user::repo::LoadError;
match error {
LoadError::Name(error) => error.into(),
LoadError::Database(error) => error.into(),
}
}
}
impl From<channel::repo::LoadError> for Error {
fn from(error: channel::repo::LoadError) -> Self {
use channel::repo::LoadError;
match error {
LoadError::Name(error) => error.into(),
LoadError::Database(error) => error.into(),
}
}
}
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