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VES-HV Collector

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(Option 1)

HV-VES collector has been proposed, based on a need to process high-volumes of data generated frequently by a large number of NFs.  It uses plain TCP connections. Connections are stream-based (as opposed to request-based) and long running. Payload is binary-encoded (currently using Google Protocol Buffers). 

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• Added dependency on HV-VES DCAE components

Kafka Interfacing using DMaaP client

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(Option 2)

Message router is added as an additional layer on top of DMaaP to support message service API interaction with the ZooKeeper/Kafka. DmaapClient is a deliverable jar that can be used to interact with the DMaaP message Router api.

Pros:

• Designed to support REST calls to Kafka from both publishers and consumers.
• Pre Defined APIs in Message Router to create/view/delete a topic in Kafka and also to publish a message to a topic and subscribe to a topic.

Cons:

• Additional overhead as an additional layer Message Router would be added between CPS and Kafka. 

Kafka Direct interface without using DMaaP client: To be used in CPS (Option 3)

Pros:

• No additional layer used between CPS and DMaaP Kafka. 
• Spring boot enables easier configuration.
• CPS can make a direct interface with Kafka and using spring-kafka. Spring-kafka used in CPS also provides support for Message-driven POJOs for publishing and subscribing events.

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• CPS does not require message service API for interacting with Kafka.

Kafka configuration details needs to be added in the application yaml of both publisher(cps-core) and consumer(cps-temporal) of the events published to Kafka. These configuration should preferably be defined in application-helm.yaml included in the OOM charts to provide flexibility while deploying the application. 

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Note: AAF integration is not included in this documentation as there is already a Jira to handle the integration CPS-281 which is still under discussion.