Prometheus.EntityFramework 1.0.0

Prometheus Entity Framework

Why Just .NET Framework 4.6.1

Currently this package is only supported for .Net Framework 4.6.1 because of dependencies.

Usage

• Install and configure Prometheus.Client.Owin package.
• Install this project package (Which is not available yet).
• Create Interceptor options.

public class MyPrometheusInterceptorOptions : PrometheusInterceptorOptions
{
  public override bool ReaderNotLogged => true;

  public class MyPrometheusInterceptorOptions : PrometheusInterceptorOptions
  {
    public override void Executed<T>(DbCommand command,
      DbCommandInterceptionContext<T> interceptionContext,
      Stopwatch stopwatch,
      InterceptedMethod interceptedMethod)
    {
      var labels = new[] {"CommandText", "Database", "DataSource", "ExceptionOccured"};
      var values = new[] {command.CommandText, command.Connection.Database, command.Connection.DataSource, (interceptionContext.Exception != null).ToString() };
      Metrics.CreateGauge("LogName", "Log Help Text", labels)
        .Labels(values)
        .Set(stopwatch.ElapsedMilliseconds);
    }
  }
}

• Create a DbConfiguration or update existing.

public class MyPrometheusDbConfiguration : DbConfiguration
{
  public MyPrometheusDbConfiguration()
  {
    AddInterceptor(new PrometheusDbCommandInterceptor(new MyPrometheusInterceptorOptions()));
  }
}

• Use Configuration above DbContext

[DbConfigurationType(typeof(MyPrometheusDbConfiguration))]
public class MyDbContext : DbContext
{
  public MyDbContext(string name) : base(name) {}
  ...
}

Project Plan

• Support .NET Framework
• Support Customizable Metrics
• Create Nuget package
• Support .NET Core
• Create Test Projects
• Source Code Documentation