Add code to get items from sql cache

src/cache.rs

@@ -10,12 +10,8 @@ use diesel::prelude::*;
 use diesel::ConnectionError;
 use dotenvy::dotenv;
 
-/// Cache struct, mapped to the SQL cache database.
-struct Cache {
-    name: String,
-    domain: String,
-    ip: String,
-}
+use crate::models::Cache;
+use crate::schema::cache::dsl::*;
 
 /// This enum wraps the errors for database connection error and .env access error,
 /// as both can happen during the `establish_connection` function.
@@ -48,9 +44,26 @@ impl From<env::VarError> for CacheError {
     }
 }
 
-pub fn establish_connection() -> Result<PgConnection, CacheError> {
+/// Uses `.env` file to get credentials to the database and establish a connection.
+fn establish_connection() -> Result<PgConnection, CacheError> {
     dotenv().ok();
-
     let database_url = env::var("DATABASE_URL")?;
+
     Ok(PgConnection::establish(&database_url)?)
 }
+
+fn load_sql() {
+    let connection = &mut establish_connection().unwrap();
+    let results = cache
+        .filter(true)
+        .limit(5)
+        .load::<Cache>(connection)
+        .expect("Error loading cache");
+
+    for result in results {
+        println!("{}", result.name);
+        println!("{}", result.domain);
+        println!("{}", result.ip);
+        println!("---");
+    };
+}

src/lib.rs

@@ -8,6 +8,8 @@ mod api_client;
 mod ear;
 mod mouth;
 mod cache;
+pub mod models;
+pub mod schema;
 
 use api_client::ApiClient;
 use ear::Ear;

src/models.rs

@@ -0,0 +1,10 @@
+use diesel::prelude::*;
+
+/// Cache struct, mapped to the SQL cache database.
+#[derive(Queryable)]
+pub struct Cache {
+    pub id: i32,
+    pub name: String,
+    pub domain: String,
+    pub ip: String,
+}