iFIX Core Fiscal Event Post-Processor

Overview

Fiscal Event Post Processor is a streaming pipeline for validated fiscal event data. Apache Kafka has been used to stream the validated fiscal event data, process it for dereferencing, unbundle, flatten, and finally push these details to the Druid data store.

Version

Current version : 2.0.0

Prerequisites

Before you proceed with the configuration, make sure the following pre-requisites are met:

1. Java 8

2. Apache Kafka and Kafka-Connect server should be up and running

3. Druid DB should be up and running

4. Below dependent services are required: iFix Master data service iFix Fiscal Event service

Features

Fiscal Event post-processor consumes the fiscal event validated data from Kafka topic named “fiscal-event-request-validated” and processes it by following the below steps:

1. Fiscal event validated data gets dereferenced. For dereferencing, service ids like COA id, Tenant id etc. are passed to corresponding services - master service and fetch the corresponding object(s). Once the fiscal event data is dereferenced, push/send the same data to the dereferenced Topic.

2. Unbundle consumers pick up the dereferenced fiscal event data from the dereferencing topic. Dereference fiscal event data gets unbundled and then flattened. Once the flattening is complete, push/send the same data to the Druid Sink topic.

3. Flattened fiscal event data is pushed to Druid DB from a topic named: fiscal-event-druid-sink.

Kafka to Data Store Sink

MongoDB Sink

The Kafka-connect is used to push the data from a Kafka topic to MongoDB. Follow the steps below to start the connector.

1. Connect (port-forward) with the Kafka-connect server.

2. Create a new connector with a POST API call to localhost:8083/connectors.

3. The request body for that API call is written in the file fiscal-event-mongodb-sink.
4. Within that file, wherever ${---} replace it with the actual value based on the environment. Get ${mongo-db-authenticated-uri} from the configured secrets of the environment. (Optional) Verify and make changes to the topic names.

5. The connector is ready. You can check it using API call GET localhost:8083/connectors.

Druid Sink

The Druid console is used to start ingesting data from a Kafka topic to the Druid data store. Follow the steps below to start the Druid Supervisor.

1. Open the Druid console

2. Go to the Load Data section

3. Select Other

4. Click on Submit Supervisor

5. Copy...Paste the JSON from the druid-ingestion-config.json file in the available text box.
6. Verify the Kafka topic name and the Kafka bootstrap server address before submitting the config

7. Submit the config and the data ingestion should start into the fiscal-event data source

Interaction Diagram

Environment

Note: Kafka topic needs to be configured with respect to the environment

Key	Value	Description	Remarks
fiscal-event-kafka-push-topic	fiscal-event-request-validated	Fiscal event post processor will consume data from this topic	Kafka topic should be same as configured in Fiscal event service.
fiscal-event-kafka-dereferenced-topic	fiscal-event-request-dereferenced	Dereferenced fiscal event data will be pushed to this topic	NA
fiscal-event-kafka-flattened-topic	fiscal-event-line-item-flattened	NA	NA
fiscal-event-processor-kafka-druid-topic	fiscal-event-druid-sink	Flattened Fiscal Event data will be pushed to this topic.	While druid ingest of fiscal event , make sure it has the same topic as mentioned here.

Configurations and Setup

Update the DB, Kafka producer & Consumer And URI configurations in the dev.yaml, qa.yaml, prod.yaml file.

References and Notes

Title	Link
Swagger Yaml	iFix-Dev/fiscal-event-post-processor-2.0.0.yaml at develop · misdwss/iFix-Dev

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