Attempt to see logs properly

Sources/App/Config.swift

@@ -39,20 +39,20 @@ extension Config {
 
     init(loadFrom url: URL) throws {
         guard FileManager.default.fileExists(atPath: url.path) else {
-            print("No configuration file found at \(url.path)")
+            printAndFlush("No configuration file found at \(url.path)")
             fatalError("No configuration file found")
         }
         let data: Data
         do {
             data = try Data(contentsOf: url)
         } catch {
-            print("Failed to read config data: \(error)")
+            printAndFlush("Failed to read config data: \(error)")
             throw error
         }
         do {
             self = try JSONDecoder().decode(Config.self, from: data)
         } catch {
-            print("Failed to decode config data: \(error)")
+            printAndFlush("Failed to decode config data: \(error)")
             throw error
         }
     }

Sources/App/DeviceManager.swift

@@ -108,7 +108,7 @@ final class DeviceManager {
     
     private func resumeDeviceRequest(with data: Data) {
         guard let receivedMessageData else {
-            print("[WARN] Received \(data.count) bytes after message completion")
+            printAndFlush("[WARN] Received \(data.count) bytes after message completion")
             self.requestInProgress = nil
             return
         }
@@ -120,12 +120,12 @@ final class DeviceManager {
         }
         self.receivedMessageData = nil
         guard let requestInProgress else {
-            print("[WARN] Received \(newData.count) bytes, but no continuation to resume")
+            printAndFlush("[WARN] Received \(newData.count) bytes, but no continuation to resume")
             return
         }
         self.requestInProgress = nil
         guard newData.count == SignedMessage.size else {
-            print("[WARN] Received \(newData.count) bytes, expected \(SignedMessage.size) for a message.")
+            printAndFlush("[WARN] Received \(newData.count) bytes, expected \(SignedMessage.size) for a message.")
             requestInProgress.resume(throwing: MessageResult.invalidMessageSizeFromDevice)
             return
         }
@@ -134,13 +134,13 @@ final class DeviceManager {
     
     private func resumeDeviceRequest(with result: MessageResult) {
         guard let receivedMessageData else {
-            print("[WARN] Result after message completed: \(result)")
+            printAndFlush("[WARN] Result after message completed: \(result)")
             self.requestInProgress = nil
             return
         }
         self.receivedMessageData = nil
         guard let requestInProgress else {
-            print("[WARN] Request in progress (\(receivedMessageData.count) bytes), but no continuation found for result: \(result)")
+            printAndFlush("[WARN] Request in progress (\(receivedMessageData.count) bytes), but no continuation found for result: \(result)")
             return
         }
         self.requestInProgress = nil
@@ -191,12 +191,12 @@ final class DeviceManager {
             socket.pingInterval = .seconds(10)
             
             socket.onText { [weak self] socket, text in
-                print("[WARN] Received text over socket: \(text)")
+                printAndFlush("[WARN] Received text over socket: \(text)")
                 // Close connection to prevent spamming the log
                 try? await socket.close()
                 
                 guard let self else {
-                    print("[WARN] No reference to self to handle text over socket")
+                    printAndFlush("[WARN] No reference to self to handle text over socket")
                     return
                 }
                 self.didCloseDeviceSocket()
@@ -204,7 +204,7 @@ final class DeviceManager {
             
             socket.onBinary { [weak self] _, data in
                 guard let self else {
-                    print("[WARN] No reference to self to process binary data on socket")
+                    printAndFlush("[WARN] No reference to self to process binary data on socket")
                     return
                 }
                 self.processDeviceResponse(data)
@@ -212,7 +212,7 @@ final class DeviceManager {
             
             socket.onClose.whenComplete { [weak self] _ in
                 guard let self else {
-                    print("[WARN] No reference to self to handle socket closing")
+                    printAndFlush("[WARN] No reference to self to handle socket closing")
                     return
                 }
                 self.didCloseDeviceSocket()

Sources/App/Print.swift

@@ -0,0 +1,16 @@
+import Foundation
+#if os(Linux)
+    import Glibc
+#else
+    import Darwin.C
+#endif
+
+
+func printAndFlush(_ message: String) {
+    print(message)
+    flushStdout()
+}
+
+func flushStdout() {
+    fflush(stdout)
+}

Sources/App/configure.swift

@@ -57,9 +57,9 @@ public func shutdown() async {
     do {
         try await asyncScheduler.shutdownGracefully()
     } catch {
-        print("Failed to shut down MultiThreadedEventLoopGroup: \(error)")
+        printAndFlush("Failed to shut down MultiThreadedEventLoopGroup: \(error)")
     }
-    print("[\(df.string(from: Date()))] Server shutdown")
+    printAndFlush("[\(df.string(from: Date()))] Server shutdown")
 }
 
 private func loadKeys(at url: URL) throws -> (deviceKey: Data, remoteKey: Data) {
@@ -84,10 +84,11 @@ private func loadKeys(at url: URL) throws -> (deviceKey: Data, remoteKey: Data)
 
 func log(_ message: String) {
     guard let observer = MetricObserver.standard else {
-        print(message)
+        printAndFlush(message)
         return
     }
     asyncScheduler.schedule {
         await observer.log(message)
+        flushStdout()
     }
 }