parse output of smartctl

lib/src/parser/mod.rs

@@ -1,2 +1,3 @@
 pub mod mdstat_parser;
-pub mod lsblk_parser;
+pub mod lsblk_parser;
+mod smart_parser;

lib/src/parser/smart_parser.rs

@@ -0,0 +1,39 @@
+use std::process::Command;
+use rocket::serde::json::serde_json;
+
+use rocket::serde::{Deserialize};
+
+#[derive(Deserialize)]
+#[serde(crate = "rocket::serde")]
+struct DiskInfo {
+    model_family: String,
+    model_name: String,
+    serial_number: String,
+    rotation_rate: u32,
+}
+
+fn get_disk_info(diskpath: &str) -> Option<DiskInfo> {
+    let mut cmd = Command::new("smartctl");
+    cmd.arg("-i")
+        .arg("-json")
+        .arg(diskpath);
+    let output = match cmd.output() {
+        Ok(output) => output,
+        Err(err) => {
+            println!("error while getting smart info: {}", err);
+            return None;
+        }
+    };
+
+    let rawsmart = output.stdout;
+
+    let info: DiskInfo = match serde_json::from_slice(&rawsmart) {
+        Ok(info) => info,
+        Err(err) => {
+            println!("{}", err);
+            return None;
+        }
+    };
+
+    Some(info)
+}