Update dependencies

Package.swift

@@ -15,8 +15,8 @@ let package = Package(
         // https://github.com/Joannis/SMTPKitten <- No updates since 0ct 2020
         // https://github.com/Joannis/VaporSMTPKit <- No updates since 0ct. 2020, uses SMTPKitten
         .package(url: "https://github.com/Kitura/Swift-SMTP", from: "6.0.0"),
-        .package(url: "https://github.com/christophhagen/Clairvoyant", from: "0.9.0"),
-        .package(url: "https://github.com/christophhagen/ClairvoyantVapor", from: "0.2.0"),
+        .package(url: "https://github.com/christophhagen/Clairvoyant", from: "0.11.2"),
+        .package(url: "https://github.com/christophhagen/ClairvoyantVapor", from: "0.5.0"),
         .package(url: "https://github.com/christophhagen/ClairvoyantBinaryCodable", from: "0.3.1"),
     ],
     targets: [

Sources/App/EventLoopScheduler.swift

@@ -0,0 +1,34 @@
+import Foundation
+import Clairvoyant
+import Vapor
+import NIOCore
+
+final class EventLoopScheduler {
+
+    private let backgroundGroup: EventLoopGroup
+
+    init(numberOfThreads: Int = 2) {
+        backgroundGroup = MultiThreadedEventLoopGroup(numberOfThreads: numberOfThreads)
+    }
+
+    func next() -> EventLoop {
+        backgroundGroup.next()
+    }
+
+    func provider() -> NIOEventLoopGroupProvider {
+        return .shared(backgroundGroup)
+    }
+
+    func shutdown() {
+        backgroundGroup.shutdownGracefully { _ in
+
+        }
+    }
+}
+
+extension EventLoopScheduler: AsyncScheduler {
+
+    func schedule(asyncJob: @escaping @Sendable () async throws -> Void) {
+        _ = backgroundGroup.any().makeFutureWithTask(asyncJob)
+    }
+}

Sources/App/Management/SQLiteDatabase.swift

@@ -52,7 +52,7 @@ final class SQLiteDatabase {
     private let registeredPlayerCountMetric: Metric<Int>
 
     init(database: Database, mail: Configuration.EMail?) async throws {
-        self.registeredPlayerCountMetric = try await Metric(
+        self.registeredPlayerCountMetric = Metric(
             "schafkopf.players",
             name: "Number of users",
             description: "The total number of user accounts")

Sources/App/Management/TableManagement.swift

@@ -28,15 +28,15 @@ final class TableManagement {
      - Throws: Errors when the file could not be read
      */
     init(database: Database) async throws {
-        self.tableCountMetric = try await .init(
+        self.tableCountMetric = .init(
             "schafkopf.tables",
             name: "Open tables",
             description: "The number of currently available tables")
-        self.playingPlayerCountMetric = try await .init(
+        self.playingPlayerCountMetric = .init(
             "schafkopf.playing",
             name: "Sitting players",
             description: "The number of players currently sitting at a table")
-        self.connectedPlayerCountMetric = try await .init(
+        self.connectedPlayerCountMetric = .init(
             "schafkopf.connected",
             name: "Connected players",
             description: "The number of players with a websocket connection to the server")

Sources/App/configure.swift

@@ -7,6 +7,14 @@ import ClairvoyantVapor
 var server: SQLiteDatabase!
 
 private var provider: VaporMetricProvider! = nil
+private let scheduler = EventLoopScheduler()
+private var status: Metric<ServerStatus>!
+
+private func update(status newStatus: ServerStatus) {
+    scheduler.schedule {
+        _ = try? await status.update(newStatus)
+    }
+}
 
 // configures your application
 public func configure(_ app: Application) async throws {
@@ -18,12 +26,12 @@ public func configure(_ app: Application) async throws {
         logMetricId: "schafkopf.log")
     MetricObserver.standard = monitor
 
-    let status = try! await Metric<ServerStatus>(
+    status = Metric<ServerStatus>(
         "schafkopf.status",
         name: "Status",
         description: "The main status of the server")
     
-    _ = try? await status.update(.initializing)
+    update(status: .initializing)
 
     let configPath = URL(fileURLWithPath: app.directory.resourcesDirectory)
         .appendingPathComponent("config.json")
@@ -32,8 +40,8 @@ public func configure(_ app: Application) async throws {
     do {
         configuration = try Configuration(loadFromUrl: configPath)
     } catch {
-        _ = try? await status.update(.initializationFailure)
-        monitor.log("Failed to read configuration: \(error)")
+        update(status: .initializationFailure)
+        await monitor.log("Failed to read configuration: \(error)")
         // Note: If configuration can't be loaded, then the server will run on the wrong port
         // and access to metrics is impossible, since no tokens are loaded
         return
@@ -60,8 +68,8 @@ public func configure(_ app: Application) async throws {
     do {
         try await app.autoMigrate()
     } catch {
-        monitor.log("Failed to migrate database: \(error)")
-        _ = try? await status.update(.initializationFailure)
+        await monitor.log("Failed to migrate database: \(error)")
+        update(status: .initializationFailure)
         return
     }
 
@@ -83,9 +91,10 @@ public func configure(_ app: Application) async throws {
 
     // Expose metrics
     provider = .init(observer: monitor, accessManager: configuration.monitoringTokens)
+    provider.asyncScheduler = scheduler
     provider.registerRoutes(app)
 
-    _ = try? await status.update(.nominal)
+    update(status: .nominal)
 }
 
 func log(_ message: String) {
@@ -93,5 +102,7 @@ func log(_ message: String) {
         print(message)
         return
     }
-    observer.log(message)
+    scheduler.schedule {
+        await observer.log(message)
+    }
 }