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Add ability to reload config

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jvyden 2022-01-20 14:42:30 -05:00
commit daba7b9633
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1 changed files with 42 additions and 15 deletions
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57
ProjectLighthouse/Types/Settings/ServerSettings.cs
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@ -1,4 +1,5 @@
using System; using System;
using System.Diagnostics;
using System.IO; using System.IO;
using System.Text.Json; using System.Text.Json;
using System.Text.Json.Serialization; using System.Text.Json.Serialization;
@ -11,33 +12,36 @@ namespace LBPUnion.ProjectLighthouse.Types.Settings;
[Serializable] [Serializable]
public class ServerSettings public class ServerSettings
{ {
public const int CurrentConfigVersion = 17; // MUST BE INCREMENTED FOR EVERY CONFIG CHANGE! public const int CurrentConfigVersion = 17; // MUST BE INCREMENTED FOR EVERY CONFIG CHANGE!
private static FileSystemWatcher fileWatcher;
static ServerSettings() static ServerSettings()
{ {
if (ServerStatics.IsUnitTesting) return; // Unit testing, we don't want to read configurations here since the tests will provide their own if (ServerStatics.IsUnitTesting) return; // Unit testing, we don't want to read configurations here since the tests will provide their own
Logger.Log("Loading config...", LoggerLevelConfig.Instance);
if (File.Exists(ConfigFileName)) if (File.Exists(ConfigFileName))
{ {
string configFile = File.ReadAllText(ConfigFileName); string configFile = File.ReadAllText(ConfigFileName);
Instance = JsonSerializer.Deserialize<ServerSettings>(configFile) ?? throw new ArgumentNullException(nameof(ConfigFileName)); Instance = JsonSerializer.Deserialize<ServerSettings>(configFile) ?? throw new ArgumentNullException(nameof(ConfigFileName));
if (Instance.ConfigVersion >= CurrentConfigVersion) return; if (Instance.ConfigVersion < CurrentConfigVersion)
{
Logger.Log($"Upgrading config file from version {Instance.ConfigVersion} to version {CurrentConfigVersion}", LoggerLevelConfig.Instance);
Instance.ConfigVersion = CurrentConfigVersion;
configFile = JsonSerializer.Serialize
(
Instance,
typeof(ServerSettings),
new JsonSerializerOptions
{
WriteIndented = true,
}
);
Logger.Log($"Upgrading config file from version {Instance.ConfigVersion} to version {CurrentConfigVersion}", LoggerLevelConfig.Instance); File.WriteAllText(ConfigFileName, configFile);
Instance.ConfigVersion = CurrentConfigVersion; }
configFile = JsonSerializer.Serialize
(
Instance,
typeof(ServerSettings),
new JsonSerializerOptions
{
WriteIndented = true,
}
);
File.WriteAllText(ConfigFileName, configFile);
} }
else else
{ {
@ -63,6 +67,29 @@ public class ServerSettings
Environment.Exit(1); Environment.Exit(1);
} }
// Set up reloading
Logger.Log("Setting up config reloading...", LoggerLevelConfig.Instance);
fileWatcher = new FileSystemWatcher
{
Path = Environment.CurrentDirectory,
Filter = ConfigFileName,
NotifyFilter = NotifyFilters.LastWrite, // only watch for writes to config file
};
fileWatcher.Changed += onConfigChanged; // add event handler
fileWatcher.EnableRaisingEvents = true; // begin watching
}
private static void onConfigChanged(object sender, FileSystemEventArgs e)
{
Debug.Assert(e.Name == ConfigFileName);
Logger.Log("Configuration file modified, reloading config.", LoggerLevelConfig.Instance);
Logger.Log("Some changes may not apply, in which case may require a restart of Project Lighthouse.", LoggerLevelConfig.Instance);
string configFile = File.ReadAllText(ConfigFileName);
Instance = JsonSerializer.Deserialize<ServerSettings>(configFile) ?? throw new ArgumentNullException(nameof(ConfigFileName));
} }
public bool InfluxEnabled { get; set; } public bool InfluxEnabled { get; set; }