Add created_date and modified_date to entities

[szybia]

adding new system-managed properties to ingest pipelines. component templates and index templates

relates to:

• index templates: Index template: Add created_date and modified_date elasticsearch#132083
• component templates: Component Templates: Add {created,modified}_date elasticsearch#131536
• pipelines: Pipelines: Add created_date and modified_date elasticsearch#130847

[github-actions]

Following you can find the validation changes against the target branch for the APIs.

API	Status	Request	Response
cluster.get_component_template	🔴 → 🟢	14/14	4/14 → 14/14
indices.get_index_template	🔴 → 🟢	23/23	5/23 → 23/23
ingest.get_pipeline	🔴 → 🟢	23/23	15/23 → 23/23

You can validate these APIs yourself by using the make validate target.

[Copilot]

Pull Request Overview

This PR adds system-managed timestamp properties (created_date, created_date_millis, modified_date, and modified_date_millis) to three Elasticsearch entity types: ingest pipelines, component templates, and index templates. These properties provide creation and modification tracking for better entity management.

• Introduces a new DateString type for ISO 8601 formatted date strings
• Adds four timestamp fields to Pipeline, ComponentTemplateNode, and IndexTemplate classes
• Updates example responses to include the new timestamp properties

Reviewed Changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
specification/_types/Time.ts	Introduces DateString type and refactors DateTime to use it
specification/ingest/_types/Pipeline.ts	Adds timestamp fields to Pipeline class with availability annotations
specification/cluster/_types/ComponentTemplate.ts	Adds timestamp fields to ComponentTemplateNode class
specification/indices/_types/IndexTemplate.ts	Adds timestamp fields to IndexTemplate class
Example YAML files	Updates response examples to include new timestamp properties
Generated output files	Auto-generated updates to TypeScript, JSON schema, and OpenAPI specs

Comments suppressed due to low confidence (2)

specification/cluster/get_component_template/examples/200_response/GetComponentTemplateResponseExample1.yaml:14

• The dates are inconsistent - created_date is 2024-01-01 but modified_date is 2025-01-01, which means the entity was modified before it was created. The created_date should be earlier than or equal to the modified_date.

  \        \"created_date_millis\" : 1704110400000,\n        \"modified_date\" : \"2025-01-01T12:00:00.000Z\",\n\

specification/indices/get_index_template/examples/200_response/GetIndexTemplateResponseExample1.yaml:15

• The dates are inconsistent - created_date is 2024-01-01 but modified_date is 2025-01-01, which means the entity was modified before it was created. The created_date should be earlier than or equal to the modified_date.

  \          \"description\" : \"my custom index template\"\n        },\n        \"created_date\" : \"2024-01-01T12:00:00.000Z\",\n\

[flobernd]

LGTM, thank you 🙂