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use crate::{
pool::{ODBCConnection, SharedPool},
OdbcError,
};
use async_trait::async_trait;
use axum_core::extract::{FromRequest, RequestParts};
use http::{self, StatusCode};
use lazy_static::lazy_static;
use odbc_api::Environment;
use std::fmt;
use std::sync::Arc;
#[derive(Clone)]
pub struct ODBCConnectionManager {
pub(crate) shared: Arc<SharedPool>,
}
lazy_static! {
pub(crate) static ref ENV: Environment = Environment::new().unwrap();
}
impl ODBCConnectionManager {
pub fn new<S: Into<String>>(connection_string: S, limit: u32) -> ODBCConnectionManager {
ODBCConnectionManager {
shared: SharedPool::new_arc(connection_string.into(), limit),
}
}
pub async fn aquire(&self) -> Result<ODBCConnection, OdbcError> {
let shared = Arc::clone(&self.shared);
shared.aquire().await
}
}
#[async_trait]
impl<B> FromRequest<B> for ODBCConnectionManager
where
B: Send,
{
type Rejection = (http::StatusCode, &'static str);
async fn from_request(req: &mut RequestParts<B>) -> Result<Self, Self::Rejection> {
req.extensions()
.get::<ODBCConnectionManager>()
.cloned()
.ok_or((
StatusCode::INTERNAL_SERVER_ERROR,
"Can't extract ODBCConnectionManager. Is `ODBCManagerLayer` enabled?",
))
}
}
impl fmt::Debug for ODBCConnectionManager {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("ODBCConnectionManager").finish()
}
}