Resource Catalogue Interface Control Document: EOEPCA.SDD.xxx

[EOEPCA-UC]

[EP-FM]

[TEP-OA]

[WPS-T]

[WPS-REST-JSON]

[CWL]

[TB13-AP]

[TB13-ADES]

[TB14-AP]

[TB14-ADES]

[OS-GEO-TIME]

[OS-EO]

[GEOJSON-LD]

[GEOJSON-LD-RESP]

[PCI-DSS]

[CEOS-OS-BP]

[OIDC]

[OARec]

[STAC-API]

[CQL]

[OGC-CSW]

[OGC-WMS]

[OGC-WMTS]

[OGC-WFS]

[OGC-WCS]

[OGC-WCPS]

[AWS-S3]

[OGC-OpenSearch-EO]

[ISO-19115:2003]

[ISO-19115-2:2009]

Admin

User with administrative capability on the EP

Algorithm

A self-contained set of operations to be performed, typically to achieve a desired data manipulation. The algorithm must be implemented (codified) for deployment and execution on the platform.

Analysis Result

The Products produced as output of an Interactive Application analysis session.

Analytics

A set of activities aimed to discover, interpret and communicate meaningful patters within the data. Analytics considered here are performed manually (or in a semi-automatic way) on-line with the aid of Interactive Applications.

Application Artefact

The 'software' component that provides the execution unit of the Application Package.

Application Deployment and Execution Service (ADES)

WPS-T (REST/JSON) service that incorporates the Docker execution engine, and is responsible for the execution of the processing service (as a WPS request) within the ‘target’ Exploitation Platform.

Application Descriptor

A file that provides the metadata part of the Application Package. Provides all the metadata required to accommodate the processor within the WPS service and make it available for execution.

Application Package

A platform independent and self-contained representation of a software item, providing executable, metadata and dependencies such that it can be deployed to and executed within an Exploitation Platform. Comprises the Application Descriptor and the Application Artefact.

Bulk Processing

Execution of a Processing Service on large amounts of data specified by AOI and TOI.

Code

The codification of an algorithm performed with a given programming language - compiled to Software or directly executed (interpretted) within the platform.

Compute Platform

The Platform on which execution occurs (this may differ from the Host or Home platform where federated processing is happening)

Consumer

User accessing existing services/products within the EP. Consumers may be scientific/research or commercial, and may or may not be experts of the domain

Catalogue Service for the Web (CSW)

OGC standard that provides a simple HTTP interface for searching collections of descriptive metadata for data, services and relation information objects.

Data Access Library

An abstraction of the interface to the data layer of the resource tier. The library provides bindings for common languages (including python, Javascript) and presents a common object model to the code.

Development

The act of building new products/services/applications to be exposed within the platform and made available for users to conduct exploitation activities. Development may be performed inside or outside of the platform. If performed outside, an integration activity will be required to accommodate the developed service so that it is exposed within the platform.

Discovery

User finds products/services of interest to them based upon search criteria.

Execution

The act to start a Processing Service or an Interactive Application.

Execution Management Service (EMS)

The EMS is responsible for the orchestration of workflows, including the possibility of steps running on other (remote) platforms, and the on-demand deployment of processors to local/remote ADES as required.

Expert

User developing and integrating added-value to the EP (Scientific Researcher or Service Developer)

Exploitation Tier

The Exploitation Tier represents the end-users who exploit the services of the platform to perform analysis, or using high-level applications built-in on top of the platform’s services

External Application

An application or script that is developed and executed outside of the Exploitation Platform, but is able to use the data/services of the EP via a programmatic interface (API).

Guest

An unregistered User or an unauthenticated Consumer with limited access to the EP’s services

Home Platform

The Platform on which a User is based or from which an action was initiated by a User

Host Platform

The Platform through which a Resource has been published

Identity Provider (IdP)

The source for validating user identity in a federated identity system, (user authentication as a service).

Interactive Application

A stand-alone application provided within the exploitation platform for on-line hosted processing. Provides an interactive interface through which the user is able to conduct their analysis of the data, producing Analysis Results as output. Interactive Applications include at least the following types: console application, web application (rich browser interface), remote desktop to a hosted VM.

Interactive Console Application

A simple Interactive Application for analysis in which a console interface to a platform-hosted terminal is provided to the user. The console interface can be provided through the user’s browser session or through a remote SSH connection.

Interactive Remote Desktop

An Interactive Application for analysis provided as a remote desktop session to an OS-session (or directly to a 'native' application) on the exploitation platform. The user will have access to a number of applications within the hosted OS. The remote desktop session is provided through the user’s web browser.

Interactive Web Application

An Interactive Application for analysis provided as a rich user interface through the user’s web browser.

Key-Value Pair

A key-value pair (KVP) is an abstract data type that includes a group of key identifiers and a set of associated values. Key-value pairs are frequently used in lookup tables, hash tables and configuration files.

Kubernetes (K8s)

Container orchestration system for automating application deployment, scaling and management.

Login Service

An encapsulation of Authenticated Login provision within the Exploitation Platform context. The Login Service is an OpenID Connect Provider that is used purely for authentication. It acts as a Relying Party in flows with external IdPs to obtain access to the user’s identity.

EO Network of Resources

The coordinated collection of European EO resources (platforms, data sources, etc.).

Object Store

A computer data storage architecture that manages data as objects. Each object typically includes the data itself, a variable amount of metadata, and a globally unique identifier.

OGC API - Records (OARec)

Draft OGC API standard that provides the capability to create, modify, and query metadata on the Web. The draft specification enables the discovery of geospatial resources by standardizing the way collections of descriptive information about the resources (metadata) are exposed. OARec is the successor to OGC CSW specification.

On-demand Processing Service

A Processing Service whose execution is initiated directly by the user on an ad-hoc basis.

Platform (EP)

An on-line collection of products, services and tools for exploitation of EO data

Platform Tier

The Platform Tier represents the Exploitation Platform and the services it offers to end-users

Processing

A set of pre-defined activities that interact to achieve a result. For the exploitation platform, comprises on-line processing to derive data products from input data, conducted by a hosted processing service execution.

Processing Result

The Products produced as output of a Processing Service execution.

Processing Service

A non-interactive data processing that has a well-defined set of input data types, input parameterisation, producing Processing Results with a well-defined output data type.

Products

EO data (commercial and non-commercial) and Value-added products and made available through the EP. It is assumed that the Hosting Environment for the EP makes available an existing supply of EO Data

Resource

A entity, such as a Product, Processing Service or Interactive Application, which is of interest to a user, is indexed in a catalogue and can be returned as a single meaningful search result

Resource Tier

The Resource Tier represents the hosting infrastructure and provides the EO data, storage and compute upon which the exploitation platform is deployed

Reusable Research Object

An encapsulation of some research/analysis that describes all aspects required to reproduce the analysis, including data used, processing performed etc.

Scientific Researcher

Expert user with the objective to perform scientific research. Having minimal IT knowledge with no desire to acquire it, they want the effort for the translation of their algorithm into a service/product to be minimised by the platform.

Service Developer

Expert user with the objective to provide a performing, stable and reliable service/product. Having deeper IT knowledge or a willingness to acquire it, they require deeper access to the platform IT functionalities for optimisation of their algorithm.

Software

The compilation of code into a binary program to be executed within the platform on-line computing environment.

Systematic Processing Service

A Processing Service whose execution is initiated automatically (on behalf of a user), either according to a schedule (routine) or triggered by an event (e.g. arrival of new data).

Terms & Conditions (T&Cs)

The obligations that the user agrees to abide by in regard of usage of products/services of the platform. T&Cs are set by the provider of each product/service.

Transactional Web Processing Service (WPS-T)

Transactional extension to WPS that allows adhoc deployment / undeployment of user-provided processors.

User

An individual using the EP, of any type (Admin/Consumer/Expert/Guest)

Value-added products

Products generated from processing services of the EP (or external processing) and made available through the EP. This includes products uploaded to the EP by users and published for collaborative consumption

Visualisation

To obtain a visual representation of any data/products held within the platform - presented to the user within their web browser session.

Web Coverage Service (WCS)

OGC standard that provides an open specification for sharing raster datasets on the web.

Web Coverage Processing Service (WCPS)

OGC standard that defines a protocol-independent language for the extraction, processing, and analysis of multi-dimentional coverages representing sensor, image, or statistics data.

Web Feature Service (WFS)

OGC standard that makes geographic feature data (vector geospatial datasets) available on the web.

Web Map Service (WMS)

OGC standard that provides a simple HTTP interface for requesting geo-registered map images from one or more distributed geospatial databases.

Web Map Tile Service (WMTS)

OGC standard that provides a simple HTTP interface for requesting map tiles of spatially referenced data using the images with predefined content, extent, and resolution.

Web Processing Services (WPS)

OGC standard that defines how a client can request the execution of a process, and how the output from the process is handled.

Workspace

A user-scoped 'container' in the EP, in which each user maintains their own links to resources (products and services) that have been collected by a user during their usage of the EP. The workspace acts as the hub for a user’s exploitation activities within the EP

AAI

Authentication & Authorization Infrastructure

ABAC

Attribute Based Access Control

ADES

Application Deployment and Execution Service

ALFA

Abbreviated Language For Authorization

AOI

Area of Interest

API

Application Programming Interface

CMS

Content Management System

CQL

Common Query Language

CSW

Catalogue Service for the Web

CWL

Common Workflow Language

DAL

Data Access Library

EMS

Execution Management Service

EO

Earth Observation

EP

Exploitation Platform

FUSE

Filesystem in Userspace

GeoXACML

Geo-specific extension to the XACML Policy Language

IAM

Identity and Access Management

IdP

Identity Provider

ISO

International Organization for Standardization

JSON

JavaScript Object Notation

K8s

Kubernetes

KVP

Key-value Pair

M2M

Machine-to-machine

OARec

OGC API - Records

OGC

Open Geospatial Consortium

PDE

Processor Development Environment

PDP

Policy Decision Point

PEP

Policy Enforcement Point

PIP

Policy Information Point

RBAC

Role Based Access Control

REST

Representational State Transfer

SSH

Secure Shell

STAC

SpatioTemporal Asset Catalog

TOI

Time of Interest

UMA

User-Managed Access

VNC

Virtual Network Computing

WCS

Web Coverage Service

WCPS

Web Coverage Processing Service

WFS

Web Feature Service

WMS

Web Map Service

WMTS

Web Map Tile Service

WPS

Web Processing Service

WPS-T

Transactional Web Processing Service

XACML

eXtensible Access Control Markup Language