Introduction

The Cloud Provider Ranker is a standalone REST WEB Service which ranks cloud provider services using rules implemented with the Drools framework.

The INDIGO PaaS Orchestrator interacts with this service in order to obtain the rank of two or more cloud services depending on the match with specific rules.

The aim of this micro component is to fully decouple the ranking logic from the Orchestrator's business logic.

The Cloud Provider Ranker can be installed on any machine which is reachable from the Orchestrator via TCP connection (including the machine running the Orchestrator itself).

It is a fully stateless service; it can be used by several Orchestrators, or by any other REST client complying with the expected JSON request.

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