read cache path from config file

config/default.toml

@@ -1,5 +1,6 @@
 debug = true
 source_code = "https://github.com/realaravinth/libmedium"
+cache = "/var/lib/libmedium"
 
 [server]
 # The port at which you want authentication to listen to

src/data.rs

@@ -14,11 +14,15 @@
  * You should have received a copy of the GNU Affero General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
+use std::path::Path;
+
 use actix_web::web;
 use graphql_client::{reqwest::post_graphql, GraphQLQuery};
 use reqwest::Client;
 use sled::{Db, Tree};
 
+use crate::SETTINGS;
+
 #[derive(Clone)]
 pub struct Data {
     pub client: Client,
@@ -40,7 +44,8 @@ pub type AppData = web::Data<Data>;
 
 impl Data {
     pub fn new() -> AppData {
-        let cache = sled::open("posts_cache").unwrap();
+        let path = Path::new(&SETTINGS.cache).join("posts_cache");
+        let cache = sled::open(path).unwrap();
         let posts = cache.open_tree("posts").unwrap();
         AppData::new(Self {
             client: Client::new(),

src/settings.rs

@@ -15,6 +15,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 use std::env;
+use std::fs;
 use std::path::Path;
 
 use config::{Config, ConfigError, Environment, File};
@@ -41,7 +42,7 @@ impl Server {
 #[derive(Debug, Clone, Deserialize)]
 pub struct Settings {
     pub debug: bool,
-    //    pub database: Database,
+    pub cache: String,
     pub server: Server,
     pub source_code: String,
 }
@@ -83,6 +84,13 @@ impl Settings {
 
         let settings: Settings = s.try_into()?;
 
+        let cache_path = Path::new(&settings.cache);
+        if !cache_path.exists() {
+            fs::create_dir(&cache_path).unwrap();
+        }
+        if !cache_path.is_dir() {
+            panic!("Cache path {} must be a directory", &settings.cache);
+        }
         Ok(settings)
     }
 }