Service Registry Clause Samples
Service Registry a database for raw measures The Service Registry contains all the information about the network performance. The raw measures produced by the SLA Observer can’t be stored in the WSN nodes, that are memory-constrained (they can only keep the current local information). Moreover, the raw measures must be consulted by the other enti- ties of the architecture (SLA Manager, SLA Admit- ter), without occupying the WSN resource. Hence, the Service Registry must be centralized (e.g. a database in the WSN operator core network). We keep the raw measures all along the SLA du- ration. Thus, if the WSN operator changes the algo- rithms of the SLA Manager and SLA Admitter, new policies can be applied taking into account the whole history of the WSN. Given that we monitor various sensor nodes, dur- ing long periods, the measures have to be accurately identified and classified. We propose the following log format for the raw measures: • timestamp: the time of the measure; • measurer (id): the producer of the measure; • entity (ids): which entities have been measured;
Service Registry. This is a repository where service providers register their services. We assume that the providers would also supply details of the QoS metrics and that they will not publish false QoS values for one reason or the other.
Service Registry. In an interconnected platform ecosystem such as EFPFInterop, the services of different platforms need to be composed together to achieve common objectives. For this purpose, the service consumers should be able to discover the available services, retrieve their API metadata, and consume them without the active involvement of the service providers. The Data Spine Service Registry provides the following mechanisms to fulfil these requirements: • Registration and lifecycle management of service/API metadata for synchronous (Request- Response) as well as asynchronous (Pub/Sub) services in a uniform manner • Discovery, lookup, and filtering of services • Use of standard API specifications (specs) to capture service metadata to ensure the completeness of and uniformity across the API descriptions. Figure 8 shows the abstract class diagram for the Service Registry that illustrates composition relationship between its classes. The notation ‘0..*’ in the diagram denotes ‘zero or more instances’ of the concerned entity. As illustrated in the diagram, the Catalog of the Service Registry can have zero or more services. Each Service has zero or more APIs, and each API has exactly one API specification (Spec). <.. image(Diagram Description automatically generated) removed ..>
Service Registry. This defines the components that enable discovery and execution of different backend services in the platform through the frontend.
Service Registry. LinkSmart Service Catalog can be used to realise the Service Registry component of Data Spine. Service Catalog is the entry point for web services. Its functionality mainly covers the lifecycle management of services i.e., the registration, viewing, updating and deregistration of services’ metadata. In addition, it supports browsing of the registered service entries and provides a service filtering functionality that can be used by service consumers to search services by known capabilities. The schema of Service Catalog supports storing metadata for both synchronous (Request-Response) as well as asynchronous (Pub/Sub) type of services. Moreover, the Service Catalog provides an MQTT API for announcing the service registration/deregistration events over predefined MQTT topics.
Service Registry a database for raw measures • timestamp: the time of the measure; • measurer (id): the producer of the measure; • entity (ids): which entities have been measured;