26 lines
843 B
Rust
26 lines
843 B
Rust
//! # Database connection management
|
|
|
|
use crate::app_config::AppConfig;
|
|
use diesel::{Connection, PgConnection};
|
|
use std::cell::RefCell;
|
|
thread_local! {
|
|
static POSTGRES_CONNECTION: RefCell<Option<PgConnection>> = RefCell::new(None);
|
|
}
|
|
|
|
/// Execute a request on the database
|
|
pub fn execute<E, I>(cb: E) -> anyhow::Result<I>
|
|
where
|
|
E: FnOnce(&mut PgConnection) -> anyhow::Result<I>,
|
|
{
|
|
// Establish connection if required
|
|
if POSTGRES_CONNECTION.with(|i| i.borrow().is_none()) {
|
|
let database_url = AppConfig::get().db_connection_chain();
|
|
let conn = PgConnection::establish(&database_url)
|
|
.unwrap_or_else(|_| panic!("Error connecting to {}", database_url));
|
|
|
|
POSTGRES_CONNECTION.with(|i| *i.borrow_mut() = Some(conn))
|
|
}
|
|
|
|
POSTGRES_CONNECTION.with(|i| cb(i.borrow_mut().as_mut().unwrap()))
|
|
}
|