Fix the SQlite build

plume-models/src/db_conn.rs

@@ -1,16 +1,17 @@
 use diesel::{
-    pg::PgConnection,
     r2d2::{ConnectionManager, Pool, PooledConnection}
 };
 use rocket::{Request, State, Outcome, http::Status, request::{self, FromRequest}};
 use std::ops::Deref;
 
-pub type PgPool = Pool<ConnectionManager<PgConnection>>;
+use Connection;
+
+pub type DbPool = Pool<ConnectionManager<Connection>>;
 
 // From rocket documentation
 
 // Connection request guard type: a wrapper around an r2d2 pooled connection.
-pub struct DbConn(pub PooledConnection<ConnectionManager<PgConnection>>);
+pub struct DbConn(pub PooledConnection<ConnectionManager<Connection>>);
 
 /// Attempts to retrieve a single connection from the managed database pool. If
 /// no pool is currently managed, fails with an `InternalServerError` status. If
@@ -19,7 +20,7 @@ impl<'a, 'r> FromRequest<'a, 'r> for DbConn {
     type Error = ();
 
     fn from_request(request: &'a Request<'r>) -> request::Outcome<Self, Self::Error> {
-        let pool = request.guard::<State<PgPool>>()?;
+        let pool = request.guard::<State<DbPool>>()?;
         match pool.get() {
             Ok(conn) => Outcome::Success(DbConn(conn)),
             Err(_) => Outcome::Failure((Status::ServiceUnavailable, ()))
@@ -29,7 +30,7 @@ impl<'a, 'r> FromRequest<'a, 'r> for DbConn {
 
 // For the convenience of using an &DbConn as an &Connection.
 impl Deref for DbConn {
-    type Target = PgConnection;
+    type Target = Connection;
 
     fn deref(&self) -> &Self::Target {
         &self.0