Type to search.

Extending EcsDocument

Serverless

Elastic Cloud Serverless projects are autoscaled environments, fully managed by Elastic and available on Elastic Cloud.

Availability

  • Generally available

    This functionality is generally available and ready for production usage.

Serverless interfaces and procedures might differ from classic Elastic Stack deployments.

Stack

The Elastic Stack includes Elastic's core products such as Elasticsearch, Kibana, Logstash, and Beats.

Availability

  • Generally available

    This functionality is generally available and ready for production usage.

Unless stated otherwise on the page, this functionality is available when your Elastic Stack is deployed on Elastic Cloud Hosted, Elastic Cloud Enterprise, Elastic Cloud on Kubernetes, and self-managed environments.

This documentation corresponds to the latest patch available for each minor version. If you're not using the latest patch, check the release notes for changes.

In instances where using the IDictionary<string, object> Metadata property is not sufficient, or there is a clearer definition of the structure of the ECS-compatible document you would like to index, it is possible to subclass the EcsDocument object and provide your own property definitions.

Through TryRead/ReceiveProperty/WriteAdditionalProperties you can hook into the EcsDocumentJsonConverter and read/write additional properties.

C# 
/// <summary>
/// An extended ECS document with an additional property
/// </summary>
[JsonConverter(typeof(EcsDocumentJsonConverterFactory))]
public class MyEcsDocument : EcsDocument
{
	[JsonPropertyName("my_root_property"), DataMember(Name = "my_root_property")]
	public MyCustomType MyRootProperty { get; set; }

	protected override bool TryRead(string propertyName, out Type type)
	{
		type = propertyName switch
		{
			"my_root_property" => typeof(MyCustomType),
			_ => null
		};
		return type != null;
	}

	protected override bool ReceiveProperty(string propertyName, object value) =>
		propertyName switch
		{
			"my_root_property" => null != (MyRootProperty = value as MyCustomType),
			_ => false
		};

	protected override void WriteAdditionalProperties(Action<string, object> write) => write("my_root_property", MyCustomType);
}

The Elastic.CommonSchema.BenchmarkDotNetExporter project takes this approach in the Domain source directory, where the BenchmarkDocument subclasses EcsDocument.