WIP storage trait

Signed-off-by: Sebastian Schildt <sebastian.schildt@de.bosch.com>

kuksa-persistence-provider/src/main.rs

@@ -1,5 +1,16 @@
+/********************************************************************************
+* Copyright (c) 2024 Contributors to the Eclipse Foundation
+*
+* This program and the accompanying materials are made available under the
+* terms of the Apache License 2.0 which is available at
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* SPDX-License-Identifier: Apache-2.0
+********************************************************************************/
 
-use std::path::PathBuf;
+mod storage;
+
+use std::{path::PathBuf};
 use clap::Parser;
 use tinyjson::JsonValue;
 
@@ -35,6 +46,18 @@ fn main() {
     let parsed: JsonValue = config_str.parse().unwrap();
     println!("Parsed: {:?}", parsed);
 
+    match parsed["state-storage"]["type"].get::<String>().unwrap().as_str() {
+            "file" => {
+                println!("File Storage");
+                let mut _storage = storage::FileStorage::new(&parsed["state-storage"]);
+            },
+            _ => {
+                eprintln!("Error: state storage type is invalid");
+                std::process::exit(1);
+            }
+        }
+
+
 
 
     println!("Hello, world!");

kuksa-persistence-provider/src/storage.rs

@@ -0,0 +1,26 @@
+/********************************************************************************
+* Copyright (c) 2024 Contributors to the Eclipse Foundation
+*
+* This program and the accompanying materials are made available under the
+* terms of the Apache License 2.0 which is available at
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* SPDX-License-Identifier: Apache-2.0
+********************************************************************************/
+
+
+pub mod filestorage;
+
+pub use filestorage::FileStorage;
+use tinyjson::JsonValue;
+
+trait Storage {
+    // Associated function signature; `Self` refers to the implementor type.
+    fn new(config: &JsonValue) -> Self;
+
+    // Method signatures; these will return a string.
+    fn get(&self, vsspath: &'static str) -> &'static str;
+
+    fn set(&self, vsspath: &'static str, vssvalue: &'static str) -> Result<(), ()>;
+
+}

kuksa-persistence-provider/src/storage/filestorage.rs

@@ -0,0 +1,43 @@
+/********************************************************************************
+* Copyright (c) 2024 Contributors to the Eclipse Foundation
+*
+* This program and the accompanying materials are made available under the
+* terms of the Apache License 2.0 which is available at
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* SPDX-License-Identifier: Apache-2.0
+********************************************************************************/
+
+use tinyjson::JsonValue;
+
+pub struct FileStorage {
+    storagefile: String,
+}
+
+impl FileStorage {
+    pub fn new(config: &JsonValue) -> Self {
+        match config["path"].get::<String>()
+        {
+            Some(x) => {
+                println!("File Storage path: {}", x);
+                //FileStorage { storagefile: "Lol" }
+                let path = x.clone();
+                FileStorage { storagefile: path}
+            }
+            _ => {
+                eprintln!("Error: file storage path is invalid");
+                std::process::exit(1);
+            }
+        }
+    }
+
+    fn get(&self, vsspath: &'static str) -> &'static str {
+        println!("Try getting VSS signal {}", vsspath);
+        &"LOL"
+    }
+
+    fn set(&self, vsspath: &'static str, vssvalue: &'static str) -> Result<(), ()> {
+        println!("Setting VSS signal {} to {}", vsspath, vssvalue);
+        Ok(())
+    }
+}