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New setting: dynamically change log level without app restart

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This commit is contained in:
Robert McRackan 2021-07-21 13:38:22 -04:00
parent b6fe3ae009
commit 35fe3ae786
7 changed files with 205 additions and 102 deletions
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93
FileManager/PersistentDictionary.cs
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@ -47,7 +47,7 @@ namespace FileManager
return stringCache[propertyName];
}
public T Get<T>(string propertyName)
public T GetNonString<T>(string propertyName)
{
var obj = GetObject(propertyName);
if (obj is null) return default;
@ -68,10 +68,32 @@ namespace FileManager
return objectCache[propertyName];
}
public string GetStringFromJsonPath(string jsonPath, string propertyName) => GetStringFromJsonPath($"{jsonPath}.{propertyName}");
public string GetStringFromJsonPath(string jsonPath)
{
if (!stringCache.ContainsKey(jsonPath))
{
try
{
var jObject = readFile();
var token = jObject.SelectToken(jsonPath);
if (token is null)
return null;
stringCache[jsonPath] = (string)token;
}
catch
{
return null;
}
}
return stringCache[jsonPath];
}
public bool Exists(string propertyName) => readFile().ContainsKey(propertyName);
private object locker { get; } = new object();
public void Set(string propertyName, string newValue)
public void SetString(string propertyName, string newValue)
{
// only do this check in string cache, NOT object cache
if (stringCache.ContainsKey(propertyName) && stringCache[propertyName] == newValue)
@ -83,7 +105,7 @@ namespace FileManager
writeFile(propertyName, newValue);
}
public void Set(string propertyName, object newValue)
public void SetNonString(string propertyName, object newValue)
{
// set cache
objectCache[propertyName] = newValue;
@ -97,19 +119,6 @@ namespace FileManager
if (IsReadOnly)
return;
try
{
var str = newValue?.ToString();
var formattedValue
= str is null ? "[null]"
: string.IsNullOrEmpty(str) ? "[empty]"
: string.IsNullOrWhiteSpace(str) ? $"[whitespace. Length={str.Length}]"
: str.Length > 100 ? $"[Length={str.Length}] {str[0..50]}...{str[^50..^0]}"
: str;
Serilog.Log.Logger.Information($"Config changed. {propertyName}={formattedValue}");
}
catch { }
// write new setting to file
lock (locker)
{
@ -119,31 +128,67 @@ namespace FileManager
jObject[propertyName] = newValue;
var endContents = JsonConvert.SerializeObject(jObject, Formatting.Indented);
if (startContents != endContents)
File.WriteAllText(Filepath, endContents);
if (startContents == endContents)
return;
File.WriteAllText(Filepath, endContents);
}
try
{
var str = formatValueForLog(newValue?.ToString());
Serilog.Log.Logger.Information("Config changed. {@DebugInfo}", new { propertyName, newValue = str });
}
catch { }
}
// special case: no caching. no logging
public void SetWithJsonPath(string jsonPath, string propertyName, string newValue)
public void SetWithJsonPath(string jsonPath, string propertyName, string newValue, bool suppressLogging = false)
{
if (IsReadOnly)
return;
var path = $"{jsonPath}.{propertyName}";
{
// only do this check in string cache, NOT object cache
if (stringCache.ContainsKey(path) && stringCache[path] == newValue)
return;
// set cache
stringCache[path] = newValue;
}
lock (locker)
{
var jObject = readFile();
var token = jObject.SelectToken(jsonPath);
var oldValue = (string)token[propertyName];
var oldValue = token.Value<string>(propertyName);
if (oldValue != newValue)
if (oldValue == newValue)
return;
token[propertyName] = newValue;
File.WriteAllText(Filepath, JsonConvert.SerializeObject(jObject, Formatting.Indented));
}
if (!suppressLogging)
{
try
{
token[propertyName] = newValue;
File.WriteAllText(Filepath, JsonConvert.SerializeObject(jObject, Formatting.Indented));
var str = formatValueForLog(newValue?.ToString());
Serilog.Log.Logger.Information("Config changed. {@DebugInfo}", new { jsonPath, propertyName, newValue = str });
}
catch { }
}
}
private static string formatValueForLog(string value)
=> value is null ? "[null]"
: string.IsNullOrEmpty(value) ? "[empty]"
: string.IsNullOrWhiteSpace(value) ? $"[whitespace. Length={value.Length}]"
: value.Length > 100 ? $"[Length={value.Length}] {value[0..50]}...{value[^50..^0]}"
: value;
private JObject readFile()
{
var settingsJsonContents = File.ReadAllText(Filepath);