Falco.Plugin.Sdk 1.0.3

Falco.Plugin.Sdk

Unofficial Falco plugin SDK for .NET, powered by DNNE native exports

✨ Early development stage alert

Wiki 📖

For a full example and addition information on how this works, check out the Wiki!

NuGet packages

Package	Latest version	Optional	Notes
Falco.Plugin.Sdk			Core Plugin SDK types
Falco.Plugin.Sdk.Generators			Source generators for native exports
Falco.Plugin.Sdk.Template		X	dotnet new falcoplugin

Dummy plugin sneak-peek

[FalcoPlugin(
    Id = 999,
    Name = "dummy_plugin",
    Description = "A dummy plugin",
    Contacts = "mvenditto",
    RequiredApiVersion = "2.0.0",
    Version = "1.0.0")]
public class Plugin: PluginBase, IEventSource, IFieldExtractor {
    public string EventSourceName => "dummy_source";

    public IEnumerable<string> EventSourcesToExtract 
        => Enumerable.Empty<string>(); // only consume ourselves event-source

    public IEnumerable<OpenParam> OpenParameters => 
        => Enumerable.Empty<string>(); // no specific open-params

    public IEnumerable<ExtractionField> Fields => new List<ExtractionField> {
        new(type: "uint64",
            name: "dummy.counter",
            display: "Counter value",
            desc: "Current value of the internal counter")
    };

    public IEventSourceInstance Open(IEnumerable<OpenParam> ? openParams) {
        return new CounterInstance();
    }
    
    public void Close(IEventSourceInstance instance) {
        instance.Dispose();
    }

    public void Extract(IExtractionRequest extraction, IEventReader evt) {
        var counter = BitConverter.ToInt32(evt.Data);
        extraction.SetValue((ulong) counter);
    }
}

public class CounterInstance: PullEventSourceInstance {
    public int Counter {get; set;}

    public CounterInstance(): base(batchSize: 10, eventSize: 8) {
        Counter = 1;
    }

    protected override void PullEvent(EventSourceInstanceContext ctx, IEventWriter evt) {
        var unixNano = (ulong) DateTimeOffset.Now.ToUnixTimeSeconds() * 1000000000;

        evt.Write(BitConverter.GetBytes(Counter));

        evt.SetTimestamp(unixNano);

        if (Counter >= 50) {
            ctx.IsEof = true;
        }

        Counter += 1;
    }
}

Note

This sdk is Unofficial and is not associated nor endorsed by Sysdig and falcosecurity/falco