allow multiple recipients, fix program exit after mail sending

src/main.rs

@@ -61,14 +61,16 @@ fn main() {
     let play_control = PlayerControl::new();
     let playout_stat = PlayoutStatus::new();
     let proc_control = ProcessControl::new();
-    let proc_ctl = proc_control.clone();
+    let play_ctl = play_control.clone();
+    let play_stat = playout_stat.clone();
+    let proc_ctl1 = proc_control.clone();
+    let proc_ctl2 = proc_control.clone();
     let messages = Arc::new(Mutex::new(Vec::new()));
 
-    let logging = init_logging(&config, proc_ctl, messages.clone());
+    let logging = init_logging(&config, proc_ctl1, messages.clone());
     CombinedLogger::init(logging).unwrap();
 
     validate_ffmpeg(&config);
-    status_file(&config.general.stat_file, &playout_stat);
 
     if let Some(range) = config.general.generate.clone() {
         // run a simple playlist generator and save them to disk
@@ -77,15 +79,13 @@ fn main() {
         exit(0);
     }
 
-    let play_ctl = play_control.clone();
-    let play_stat = playout_stat.clone();
-    let proc_ctl = proc_control.clone();
-
     if config.rpc_server.enable {
         // If RPC server is enable we also fire up a JSON RPC server.
-        thread::spawn(move || json_rpc_server(config_clone, play_ctl, play_stat, proc_ctl));
+        thread::spawn(move || json_rpc_server(config_clone, play_ctl, play_stat, proc_ctl2));
     }
 
+    status_file(&config.general.stat_file, &playout_stat);
+
     if &config.out.mode.to_lowercase() == "hls" {
         // write files/playlist to HLS m3u8 playlist
         write_hls(&config, play_control, playout_stat, proc_control);
@@ -94,11 +94,13 @@ fn main() {
         player(&config, play_control, playout_stat, proc_control);
     }
 
+    info!("Playout done...");
+
     let msg = messages.lock().unwrap();
 
     if msg.len() > 0 {
         send_mail(&config, msg.join("\n"));
     }
 
-    info!("Playout done...");
+    drop(msg);
 }

src/utils/logging.rs

@@ -26,30 +26,41 @@ use crate::utils::{GlobalConfig, ProcessControl};
 
 /// send log messages to mail recipient
 pub fn send_mail(cfg: &GlobalConfig, msg: String) {
-    if let Ok(email) = Message::builder()
+    let recip = cfg
+        .mail
+        .recipient
+        .split_terminator([',', ';', ' '])
+        .filter(|s| s.contains('@'))
+        .map(|s| s.trim())
+        .collect::<Vec<&str>>();
+
+    let mut message = Message::builder()
         .from(cfg.mail.sender_addr.parse().unwrap())
-        .to(cfg.mail.recipient.parse().unwrap())
-        .subject(cfg.mail.subject.clone())
-        .header(header::ContentType::TEXT_PLAIN)
-        .body(clean_string(&msg))
-    {
+        .subject(&cfg.mail.subject)
+        .header(header::ContentType::TEXT_PLAIN);
+
+    for r in recip {
+        message = message.to(r.parse().unwrap());
+    }
+
+    if let Ok(email) = message.body(clean_string(&msg)) {
         let credentials =
             Credentials::new(cfg.mail.sender_addr.clone(), cfg.mail.sender_pass.clone());
 
         let mut transporter = SmtpTransport::relay(cfg.mail.smtp_server.clone().as_str());
 
         if cfg.mail.starttls {
-            transporter = SmtpTransport::starttls_relay(cfg.mail.smtp_server.clone().as_str())
+            transporter = SmtpTransport::starttls_relay(cfg.mail.smtp_server.clone().as_str());
         }
 
         let mailer = transporter.unwrap().credentials(credentials).build();
 
         // Send the email
         if let Err(e) = mailer.send(&email) {
-            error!("Could not send email: {:?}", e)
+            error!("Could not send email: {:?}", e);
         }
     } else {
-        error!("Mail Message failed!")
+        error!("Mail Message failed!");
     }
 }
 
@@ -62,14 +73,16 @@ fn mail_queue(
     messages: Arc<Mutex<Vec<String>>>,
     interval: u64,
 ) {
-    while !proc_ctl.is_terminated.load(Ordering::SeqCst) {
-        if messages.lock().unwrap().len() > 0 {
-            let msg = messages.lock().unwrap().join("\n");
-            send_mail(&cfg, msg);
+    while !(*proc_ctl.is_terminated).load(Ordering::SeqCst) {
+        let mut msg = messages.lock().unwrap();
 
-            messages.lock().unwrap().clear();
+        if msg.len() > 0 {
+            send_mail(&cfg, msg.join("\n"));
+            msg.clear();
         }
 
+        drop(msg);
+
         sleep(Duration::from_secs(interval));
     }
 }
@@ -104,9 +117,6 @@ impl Log for LogMailer {
 
     fn log(&self, record: &Record<'_>) {
         if self.enabled(record.metadata()) {
-            let local: DateTime<Local> = Local::now();
-            let time_stamp = local.format("[%Y-%m-%d %H:%M:%S%.3f]");
-            let level = record.level().to_string().to_uppercase();
             let rec = record.args().to_string();
             let mut last_msg = self.last_message.lock().unwrap();
 
@@ -114,7 +124,10 @@ impl Log for LogMailer {
             // this we do to prevent spamming the mail box
             if *last_msg != rec {
                 *last_msg = rec.clone();
-                let full_line: String = format!("{time_stamp} [{level: >5}] {rec}");
+                let local: DateTime<Local> = Local::now();
+                let time_stamp = local.format("[%Y-%m-%d %H:%M:%S%.3f]");
+                let level = record.level().to_string().to_uppercase();
+                let full_line = format!("{time_stamp} [{level: >5}] {rec}");
 
                 self.messages.lock().unwrap().push(full_line);
             }