From a217db19455a0861c169780bd1bfdd5b0be8dee0 Mon Sep 17 00:00:00 2001
From: Christoph Hagen <github@christophhagen.de>
Date: Wed, 22 Nov 2023 11:48:50 +0100
Subject: [PATCH] Allow log path specification

---
 Sources/App/Config.swift    | 16 ++++++++++++++++
 Sources/App/configure.swift |  9 +++++----
 2 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/Sources/App/Config.swift b/Sources/App/Config.swift
index 13eb2c6..5b595f9 100644
--- a/Sources/App/Config.swift
+++ b/Sources/App/Config.swift
@@ -13,6 +13,22 @@ struct Config {
 
     /// The authentication tokens to use for monitoring of the service
     let authenticationTokens: Set<String>
+    
+    /// The path to the folder where the metric logs are stored
+    ///
+    /// If no path is provided, then a folder `logs` in the resources directory is created
+    /// If the path is relative, then it is assumed relative to the resources directory
+    let logPath: String?
+    
+    func logURL(possiblyRelativeTo resourcesDirectory: URL) -> URL {
+        guard let logPath else {
+            return resourcesDirectory.appendingPathComponent("logs")
+        }
+        guard !logPath.hasPrefix("/") else {
+            return .init(fileURLWithPath: logPath)
+        }
+        return resourcesDirectory.appendingPathComponent(logPath)
+    }
 }
 
 extension Config: Codable {
diff --git a/Sources/App/configure.swift b/Sources/App/configure.swift
index a175e3b..1c3c5ec 100755
--- a/Sources/App/configure.swift
+++ b/Sources/App/configure.swift
@@ -24,7 +24,11 @@ enum ServerError: Error {
 // configures your application
 public func configure(_ app: Application) throws {
     let storageFolder = URL(fileURLWithPath: app.directory.resourcesDirectory)
-    let logFolder = storageFolder.appendingPathComponent("logs")
+    
+    let configUrl = storageFolder.appendingPathComponent("config.json")
+    let config = try Config(loadFrom: configUrl)
+    
+    let logFolder = config.logURL(possiblyRelativeTo: storageFolder)
     
     let monitor = MetricObserver(logFileFolder: logFolder, logMetricId: "sesame.log")
     MetricObserver.standard = monitor
@@ -34,9 +38,6 @@ public func configure(_ app: Application) throws {
         _ = try await status.update(.initializing)
     }
 
-    let configUrl = storageFolder.appendingPathComponent("config.json")
-    let config = try Config(loadFrom: configUrl)
-
     app.http.server.configuration.port = config.port
 
     let keyFile = storageFolder.appendingPathComponent(config.keyFileName)