add setState command, detect crashed/stopped servers periodically

src/cli/mod.rs

@@ -4,6 +4,7 @@ pub mod remove;
 pub mod ls;
 pub mod start;
 pub mod stop;
+pub mod set_state;
 
 pub mod env_settings;
 

src/cli/set_state.rs

@@ -0,0 +1,33 @@
+use clap::Arg;
+use clap::ArgMatches;
+use clap::Command;
+
+use diesel::prelude::*;
+use crate::DbPool;
+use crate::schema;
+use crate::status::ServerStatus;
+
+pub fn create_subcommand() -> Command {
+    Command::new("setState")
+    .about("force the known state of a server (will not change the actual state)")
+    .arg(Arg::new("NAME").required(true))
+    .arg(Arg::new("STATE").required(true))
+}
+
+pub async fn subcommand(arguments: &ArgMatches, pool: DbPool) -> Result<(), String> {
+    use schema::servers::dsl::*;
+
+
+    let server_name = arguments.get_one::<String>("NAME").unwrap();
+    let wanted_state = match arguments.get_one::<String>("STATE").unwrap().as_str() {
+        "stopped" => {ServerStatus::Stopped},
+        "running" => {ServerStatus::Running},
+        _ => { return Err("invalid state, must be `stoppped` or `running`".to_string()) }
+    };
+
+    let conn = &mut pool.get().unwrap();
+
+    diesel::update(servers).filter(name.eq(server_name)).set(status.eq(wanted_state)).execute(conn).map_err(|e| format!("Failed to set the server to the wanted state : {}", e))?;
+
+    Ok(())
+}