How to create a LoggerFactory with a ConsoleLoggerProvider?

asked7 years ago
last updated3 years ago
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The ConsoleLoggerProvider has four constructors:

  1. ConsoleLoggerProvider(IConsoleLoggerSettings)
  2. ConsoleLoggerProvider(IOptionsMonitor)
  3. ConsoleLoggerProvider(Func<String,LogLevel,Boolean>, Boolean)
  4. ConsoleLoggerProvider(Func<String,LogLevel,Boolean>, Boolean, Boolean)

Three of them are declared obsolete with this message:

This method is obsolete and will be removed in a future version. The recommended alternative is using LoggerFactory to configure filtering and ConsoleLoggerOptions to configure logging options.

With constructor #3, creating a LoggerFactory with a ConsoleLoggerProvider is straightforward (as documented on Entity Framework Core - Logging):

var loggerFactory = new LoggerFactory(new[] { new ConsoleLoggerProvider((category, level) => level >= LogLevel.Information, true) });

But since it's deprecated, we are left with constructor #2. Here's what I found to be equivalent:

var configureNamedOptions = new ConfigureNamedOptions<ConsoleLoggerOptions>("", null);
var optionsFactory = new OptionsFactory<ConsoleLoggerOptions>(new []{ configureNamedOptions }, Enumerable.Empty<IPostConfigureOptions<ConsoleLoggerOptions>>());
var optionsMonitor = new OptionsMonitor<ConsoleLoggerOptions>(optionsFactory, Enumerable.Empty<IOptionsChangeTokenSource<ConsoleLoggerOptions>>(), new OptionsCache<ConsoleLoggerOptions>());
var loggerFactory = new LoggerFactory(new[] { new ConsoleLoggerProvider(optionsMonitor) }, new LoggerFilterOptions { MinLevel = LogLevel.Information });

This seems overly complicated, am I missing something simpler?