Display the number of active player

[valheim_web.git] / backend / src / valheim_controller.rs

diff --git a/backend/src/valheim_controller.rs b/backend/src/valheim_controller.rs
index a483756..457abc1 100644 (file)
--- a/backend/src/valheim_controller.rs
+++ b/backend/src/valheim_controller.rs
@@ -1,4 +1,5 @@
-use sysinfo::{ProcessExt, SystemExt};\r
+use sysinfo::{ ProcessExt, SystemExt };\r
+use systemd::journal;\r
 \r
 #[derive(Debug)]\r
 pub struct ValheimExe {\r
@@ -6,24 +7,32 @@ pub struct ValheimExe {
     load_average_5min: f64, // [%].\r
     uptime: u64, // [s].\r
     world_size: u64, // [B].\r
+    nb_of_players: u32,\r
 }\r
 \r
 impl ValheimExe {\r
     pub fn format_memory(&self) -> String {\r
         format_byte_size(self.memory * 1024, 2)\r
     }\r
+\r
     pub fn format_load_average(&self) -> String {\r
         format!("{:.2} %", self.load_average_5min)\r
     }\r
+\r
     pub fn format_uptime(&self) -> String {\r
         let mins = self.uptime / 60;\r
         let hours = mins / 60;\r
         let days = hours / 24;\r
         format!("{}d{}h{}min", days, hours - 24 * days, mins - 60 * hours)\r
     }\r
+\r
     pub fn format_world_size(&self) -> String {\r
         format_byte_size(self.world_size, 2)\r
     }\r
+\r
+    pub fn get_nb_of_player(&self) -> u32 {\r
+        self.nb_of_players\r
+    }\r
 }\r
 \r
 const BINARY_PREFIXES: [&str; 8] = ["B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB"];\r
@@ -46,6 +55,33 @@ fn format_byte_size(bytes: u64, precision: usize) -> String {
 \r
 const VALHEIM_PROCESS_NAME: &str = "valheim_server";\r
 \r
+fn get_number_of_players() -> u32 {\r
+    let mut journal =\r
+        journal::OpenOptions::default().current_user(true).open().unwrap();\r
+\r
+    journal.seek_tail().unwrap();\r
+\r
+    loop {\r
+        match journal.previous_entry() {\r
+            Ok(Some(entry)) => {\r
+                if let (Some(unit), Some(mess)) = (entry.get("_SYSTEMD_UNIT"), entry.get("MESSAGE")) {\r
+                    if unit == "valheim.service" {\r
+                        if let Some(pos) = mess.find("Connections") {\r
+                            let nb_of_connections_str = mess.get(pos+12..).unwrap();\r
+                            if let Some(pos_end) = nb_of_connections_str.find(' ') {\r
+                                if let Ok(n) = nb_of_connections_str.get(0..pos_end).unwrap().parse() {\r
+                                    return n;\r
+                                }\r
+                            }\r
+                        }\r
+                    }\r
+                }\r
+            },\r
+            _ => return 0\r
+        }\r
+    }\r
+}\r
+\r
 pub fn get_valheim_executable_information(world_path : &str) -> Option<ValheimExe> {\r
     let mut system = sysinfo::System::new_all();\r
     system.refresh_system();\r
@@ -61,7 +97,8 @@ pub fn get_valheim_executable_information(world_path : &str) -> Option<ValheimEx
                 memory: process.memory(),\r
                 load_average_5min: system.get_load_average().five / system.get_processors().len() as f64 * 100.,\r
                 uptime: std::time::SystemTime::now().duration_since(std::time::UNIX_EPOCH).unwrap().as_secs() - process.start_time(),\r
-                world_size\r
+                world_size,\r
+                nb_of_players: get_number_of_players()\r
             }\r
         )\r
     } else {\r