STAC API - asset-href-mode extension specification

Overview

• Title: asset-href-mode
• OpenAPI specification: openapi.yaml
• Conformance Classes:
• Scope: STAC API - Features, STAC API - Item Search
• Extension Maturity Classification: Proposal
• Dependencies:
  • STAC API - Item Search
  • STAC API - Features
• Owner: @VITObelgium

The purpose of the asset-href-mode extension is to provide a way to handle different asset links for alternative data access methods. Depending on the selected data access method, the correct asset href links will be returned.

Endpoints

The extensions adds endpoints to retrieve the different supported data access methods, both on the catalogue level and the collection level.

Endpoint	Returns	Description
/asset-href-modes	JSON	Retrieves all asset-href-modes supported by this catalogue.
/{collectionId}/asset-href-modes	JSON	Retrieves asset-href-modes supported for this specific collection.

Example response for the /asset-href-modes endpoint:

{
    "title": "asset-href-modes for STAC API",
    "description": "Supported values for the asset-href-mode parameter.",
    "properties": {
        "HTTP": {
            "description": "HTTP download link"
        },
        "S3": {
            "description": "AWS S3 path"
        }
    }
}

Parameters

This extension adds the asset-href-mode parameter to the item search and features scope. Depending on the value of this parameter, the correct asset href links will be returned.