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use anyhow::Error;
use anyhow::Result;
use diesel::PgConnection;
use diesel::prelude::*;
use crate::schema::envvars::*;
use crate::schema::envvars;
use crate::util::EnvironmentVariableName;
#[derive(Identifiable, Queryable)]
#[table_name="envvars"]
pub struct EnvVar {
pub id: i32,
pub name: String,
pub value: String,
}
#[derive(Insertable)]
#[table_name="envvars"]
struct NewEnvVar<'a> {
pub name: &'a str,
pub value: &'a str,
}
impl EnvVar {
pub fn create_or_fetch(database_connection: &PgConnection, k: &EnvironmentVariableName, v: &str) -> Result<EnvVar> {
let new_envvar = NewEnvVar { name: k.as_ref(), value: v };
diesel::insert_into(envvars::table)
.values(&new_envvar)
.on_conflict_do_nothing()
.execute(database_connection)?;
dsl::envvars
.filter(name.eq(k.as_ref()).and(value.eq(v)))
.first::<EnvVar>(database_connection)
.map_err(Error::from)
}
}
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