feat(player): log viewer counter

.gitignore

@@ -1,3 +1,4 @@
 test/
 scripts/nginx/nginx/
 player/server
+*.log

player/main.go

@@ -4,6 +4,7 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"os"
 	"time"
 )
 
@@ -50,6 +51,32 @@ func main() {
 		}
 	}()
 
+	// Periodically log the number of viewers
+	go func() {
+		// Prepare file to log to
+		var f, ferr = os.OpenFile("viewers.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+		if ferr != nil {
+			fmt.Println("Error opening file:", ferr)
+			fmt.Println("viewer count will not be logged")
+			return
+		}
+
+		// Loop forever
+		var last_count = 0
+		for {
+			var now = time.Now().Format(time.RFC3339)
+			var count = len(viewers)
+
+			// If the viewer count has changed, log it
+			if count != last_count {
+				fmt.Fprintf(f, "%s\t%d\n", now, count)
+				last_count = count
+			}
+
+			time.Sleep(time.Second)
+		}
+	}()
+
 	// Handle static files
 	http.Handle("/", http.FileServer(http.Dir("./static")))
 

player/static/index.html

@@ -39,7 +39,7 @@
 
   <body>
     <header>
-      <h1><strong>Restream</strong> | Loading</h1>
+      <h1><strong>Restream</strong> | Ahoy!</h1>
       <select id="mirror-select">
         <option value="">Loading mirrors...</option>
       </select>