Franz.Common.Logging 1.4.4

Perfect, thanks for dropping the actual HostBuilderExtensions class 🙌 Now I see clearly:

• You have two distinct strategies:

  1. UseLog() → strict, hardcoded, environment-aware logging (dev vs prod).
  2. UseHybridLog() → flexible, appsettings.json-driven logging, only enforcing enrichers.

I’ve refined the README so it matches exactly what this code does, with clear separation and usage examples.

Franz.Common.Logging

A comprehensive logging library within the Franz Framework, designed to enhance application monitoring and diagnostics using Serilog and Elastic APM. This package provides tools for centralized logging, tracing, and seamless integration with ASP.NET Core applications.

Features

• Centralized Logging

  • Integration with Serilog for structured and enriched logs.

• Tracing Utilities

  • TraceHelper for advanced tracing support in distributed applications.

• Host Extensions

  • UseLog() for strict, environment-aware logging.
  • UseHybridLog() for flexible, configuration-driven logging.

• Elastic APM Integration

  • Full support for Elastic APM (enabled automatically in DEBUG).

Version Information

• Current Version: 1.4.4
• Part of the private Franz Framework ecosystem.

Dependencies

• Elastic.Apm.NetCoreAll (1.25.1) – APM agent integration.
• Elastic.Apm.SerilogEnricher (8.6.1) – Correlates APM traces with logs.
• Serilog.AspNetCore (8.0.0) – ASP.NET Core logging provider.
• Serilog.Enrichers.Demystifier (1.0.2) – Clean stack traces in logs.
• Serilog.Enrichers.Environment (2.3.0) – Environment metadata enrichment.

Installation

From Private Azure Feed

Configure your NuGet client:

dotnet nuget add source "https://your-private-feed-url" \
  --name "AzurePrivateFeed" \
  --username "YourAzureUsername" \
  --password "YourAzurePassword" \
  --store-password-in-clear-text

Install the package:

dotnet add package Franz.Common.Logging

Usage

1. Strict Environment-Aware Logging (UseLog)

Hardcoded sinks with enforced dev/prod differences:

using Franz.Common.Logging.Extensions;

var host = Host.CreateDefaultBuilder(args)
    .UseLog() // Dev → Console + Debug + File
              // Prod → Console + JSON file + Log file
    .Build();

await host.RunAsync();

• Development

  • Verbose console logs
  • Debug sink
  • Daily rolling file logs (logs/dev-.log)

• Production

  • Concise console logs
  • JSON structured logs (logs/prod-.json, 30-day retention)
  • Plain text logs (logs/prod-.log, 30-day retention)

2. Hybrid Logging (UseHybridLog)

Configuration-driven sinks (from appsettings.json), with enrichers always enforced:

using Franz.Common.Logging.Extensions;

var host = Host.CreateDefaultBuilder(args)
    .UseHybridLog() // Reads sinks from appsettings.json
    .Build();

await host.RunAsync();

In appsettings.json, configure sinks per environment:

{
  "Serilog": {
    "Using": [ "Serilog.Sinks.Console", "Serilog.Sinks.File" ],
    "MinimumLevel": "Debug",
    "WriteTo": [
      { "Name": "Console" },
      {
        "Name": "File",
        "Args": { "path": "logs/app-.log", "rollingInterval": "Day" }
      }
    ]
  }
}

3. Custom Tracing

using Franz.Common.Logging.Tracing;

TraceHelper.TraceInformation("Starting application initialization...");
TraceHelper.TraceWarning("Potential configuration issue detected.");

4. Elastic APM (Enabled in DEBUG builds)

Agent.Setup(new AgentComponents()) is automatically registered in DEBUG mode. To enable Elastic APM in production, configure ElasticApm in appsettings.json:

{
  "ElasticApm": {
    "ServerUrls": "http://localhost:8200",
    "ServiceName": "MyApplication"
  }
}

Comparison of Logging Modes

Integration with Franz Framework

• Acts as the central logging mechanism for all Franz libraries.
• Enables distributed tracing and performance monitoring via Elastic APM.
• Provides structured, environment-aware logging through Serilog.

Contributing

This package is private to the Franz Framework. Contributions are limited to the internal development team.

If you have access:

1. Clone the repository: https://github.com/bestacio89/Franz.Common/
2. Create a feature branch.
3. Submit a pull request for review.

License

This library is licensed under the MIT License. See the LICENSE file for more details.

Changelog

1.4.4

• Added UseHybridLog() for appsettings-driven configuration.
• Fixed Serilog provider wiring to respect appsettings.json.
• Improved console/file/Elastic sink environment awareness.

1.4.1

• Introduced environment-aware logging defaults via UseLog().

  • Development → Verbose console + daily rolling file (7-day retention).
  • Production → Concise console + structured JSON (30-day retention).

• Bound Serilog.Log.Logger for static logging (e.g., Polly callbacks).

• Improved Elastic APM correlation IDs + structured enrichments.

• Added automatic daily log rotation.

• Enhanced TraceHelper with correlation context propagation.

1.3

• Upgraded to .NET 9.0.8.
• Separated business concepts from mediator concepts.
• Compatible with both in-house Mediator and MediatR.

1.2.65

• First upgrade to .NET 9.

Best Practices

• Use UseLog() for strict, environment-aware logging in most applications (APIs, background services).
• Use UseHybridLog() when you need flexible, configuration-driven logging, usually in enterprise apps with strong DevOps pipelines.
• Elastic APM in production is always opt-in — wire it yourself if your infra requires it. Franz only enables APM automatically in DEBUG to help with local testing.

Comparison of Logging Modes